CN112993871B - Seabed fluting rotary-cut and water spray aggregate unit - Google Patents

Abstract

The invention discloses a subsea slotting rotary cutting and water spray linkage device, which aims to solve the problem that the existing subsea slotting device has a shallow slotting depth on the seabed, which is not conducive to the burying of submarine cables. The invention includes an installation frame, a drilling head installed on the installation frame and a row of rotary cutting heads. Several high-pressure flushing pipes are installed on the rotary cutting heads, and the open end of the high-pressure flushing pipes exposes the outer wall of the rotary cutting high-pressure head; , Liftable connecting seat, the piston rod of the lifting hydraulic cylinder is connected with the connecting seat, the drilling hydraulic motor that drives the drilling head to rotate is installed on the connecting seat, the positioning sleeve is installed on the output shaft of the drilling hydraulic motor, and the lifting and lowering device is installed in the positioning sleeve. A pre-tightening spring is installed between the lifting rod and the positioning sleeve, the lifting rod and the positioning sleeve rotate synchronously, and the lifting rod and the drilling head are connected together. The subsea slotting rotary cutting and water spray linkage device directly flushes the sediment out of the groove through high-pressure water during the slotting operation on the seabed, ensuring the slotting depth.

Description

Subsea Slotting Rotary and Water Spray Linkage

technical field

The invention relates to a submarine cable laying technology, more particularly, to a submarine slotted rotary cutting and water spray linkage device.

Background technique

At present, when laying a submarine cable, it is necessary to perform a groove operation on the seabed, and then lay the cable into the groove, and cover the cable with sediment to protect the cable. At present, the hoisting and grooving device of the cable-laying ship is generally used for grooving on the seabed. However, during the grooving process, the sediment easily slips into the groove, resulting in a shallow groove depth, which is not conducive to the burial of the cable.

SUMMARY OF THE INVENTION

The invention overcomes the deficiency that the existing seabed slotting device has a shallow slotting depth on the seabed, which is not conducive to the burying of the seabed cable, and provides a seabed slotting rotary cutting and water spray linkage device, which performs slotting on the seabed. During the operation, the sediment is directly flushed out of the groove by high-pressure water, so as to prevent the sediment from slipping into the groove, ensure the depth of the groove, and facilitate the laying of submarine cables.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical scheme: a seabed slotted rotary cutting and water spray linkage device, comprising a mounting frame, a drilling head installed on the mounting frame and a row of rotary cutting heads, and the rotary cutting head is installed on the Several high-pressure flushing pipes, the open end of the high-pressure flushing pipe exposes the outer wall of the rotary-cut high-pressure head; a lifting hydraulic cylinder and a lifting connecting seat are installed on the mounting frame, the piston rod of the lifting hydraulic cylinder is connected with the connecting seat, and the connecting seat is installed to drive the drilling head to rotate A positioning sleeve is installed on the output shaft of the drilling hydraulic motor, a lifting rod that can be raised and lowered is installed in the positioning sleeve, a preload spring is installed between the lifting rod and the positioning sleeve, the lifting rod and the positioning sleeve are rotated synchronously, and the lifting rod is The drill heads are connected together.

When the subsea slotting and rotary cutting and water spraying linkage are working, the cable-laying ship is used to lift and sink to the seabed first, and then the lifting hydraulic cylinder pushes the connecting seat to move down, and the drilling head is started to rotate to carry out the drilling operation on the seabed. While lifting the mounting frame, move forward and backward to expand the scope of drilling. When encountering hard rock during the drilling process, the preload spring can make the drilling head buffer upwards, produce the effect of shaking up and down, improve the drilling effect, and avoid the phenomenon of stuck and stagnant rotation. After the depth of the drill hole can accommodate all the rotary cutting heads, the drilling head stops rotating, and the lifting hydraulic cylinder drives the drilling head to move up and return to the original position. The cutting head is pulled forward by the cable-laying vessel while rotating, so as to carry out the grooving operation. During the grooving process, the high-pressure water flow is sprayed outward through the high-pressure flushing pipe, and the sediment is sprayed out to prevent the sediment from slipping into the groove. The subsea slotting rotary cutting and water spray linkage device directly flushes the sediment out of the groove through high-pressure water during the slotting operation on the seabed, so as to prevent the sediment from sliding into the groove, ensure the slotting depth, and is beneficial to Laying of submarine cables.

Preferably, there are several installation cavities on the outer wall of the drilling head, and an explosive cartridge is installed in the installation cavity. Several ejector rods are installed, a positioning spring is connected between the ejector rod and the drilling head, an abutting sleeve is provided on the sliding cover of the lifting rod, and a limit spring is installed between the abutting sleeve and the drilling head, and the upper ends of the several ejector rods have different height positions. Similarly, the upper end of the abutting sleeve can abut on the positioning sleeve, and the lower end of the abutting sleeve can abut on the ejector rod and push the ejector rod to move downward.

During the downward drilling process of the drilling head, when it encounters hard rock and cannot continue to drill down, the drilling head will move upward relative to the positioning sleeve at this time. When the upper end of the abutting sleeve abuts on the positioning sleeve, the lower end When the ejector rod is reached, the abutment sleeve pushes the ejector rod to move downward, and the lower end of the ejector rod abuts on the touch switch, triggering the corresponding explosive cartridge to explode, and the generated shock wave impacts the drilling position, smashing the rock, which is convenient for subsequent drilling. hole operation.

Preferably, a guide rod is installed on the mounting frame, and the connecting seat and the guide rod are movably sleeved together. The connecting seat moves up and down on the guide rod, which is stable and reliable.

Preferably, a positioning hole is provided in the drilling head and the ejector rod, the ejector rod is adapted and inserted into the positioning hole, the lower end of the ejector rod is connected with a positioning nut, the upper part of the ejector rod is provided with a convex ring, and the positioning spring abuts against the convex ring and the top rod. between drilling heads. The ejector rod is installed in the positioning hole, which is stable and reliable.

Preferably, the high-pressure flushing pipe includes a water supply section and a flushing section, the water supply section is provided with a steering seat, one end of the flushing pipe is provided with a universal ball, the other end of the flushing pipe and the rotary cutting head are connected with a pulling spring, and the steering seat is provided with Spherical groove, the universal ball is rotatably installed in the spherical groove.

During the rotation of the rotary cutting head, the flushing pipe will swing outward under the action of centrifugal force, which is beneficial to expand the spray range of the water flow and flush the sediment out of the groove.

Preferably, a partition plate is correspondingly provided on the rotary cutting head and the flushing section, and the flushing section is placed outside the partition plate. The partition plate plays a good role in isolation, preventing sediment from entering the rotary cutting head during the working process of the rotary cutting head.

Preferably, a connecting plate is installed on the mounting frame corresponding to the rotary cutting head, one end of the connecting plate is rotatably installed on the mounting frame, the other end of the connecting plate is provided with a chute, and the mounting frame is provided with an abutting column corresponding to the chute, which abuts against The column is inserted into the chute, the abutment spring is installed in the chute, and the abutment spring abuts on the abutment column; the rotary cutting head is connected to the rotating shaft driven by the rotary cutting hydraulic motor, and the rotary shaft and the rotary cutting hydraulic motor are installed on the On the connecting plate, a transmission gear and a push cam are installed on the connecting plate. The outer wall of the push cam can abut on the abutment column and push the connecting plate to move. The drive gear is connected to the driving bevel gear, and the push cam is connected to the driven bevel gear. The gear meshes with the driven bevel gear for transmission, the rotating shaft is provided with a driving gear corresponding to the transmission gear, and the driving gear meshes with the transmission gear for transmission.

The rotation of the rotating shaft drives the rotary cutting head to rotate. During the rotation of the rotating shaft, it drives the cam to rotate, and pushes the cam to continuously slide over the abutment column, thereby pushing the connecting plate to move left and right, so as to realize the left and right swing of the rotary cutting head during the working process, which is beneficial to the rotary cutting. The slotting operation of the head can avoid the phenomenon of stuck and stopped rotation of the rotary cutting head.

Compared with the prior art, the beneficial effects of the present invention are as follows: (1) During the slotting operation of the seabed slotting rotary cutting and water spray linkage device, the sediment is directly flushed out of the groove through high-pressure water to avoid muddy water. The sand slips into the groove, which ensures the depth of the groove, which is beneficial to the layout of the submarine cable; (2) The phenomenon of stuck and stagnant will not occur during the downward drilling process of the drill bit hole, and the drilling is convenient and reliable; (3) Rotary cutting The head will not be stuck during the grooving process, the grooving effect is good, and the work efficiency is high.

Description of drawings

Fig. 1 is a kind of structural representation of the present invention;

Fig. 2 is the connection structure schematic diagram of the drilling head of the present invention;

Fig. 3 is the connection structure schematic diagram of the rotary cutting head of the present invention;

In the picture: 1. Mounting frame, 2. Drilling head, 3. Rotary cutting head, 4. High pressure flushing pipe, 5. Lifting hydraulic cylinder, 6. Connecting seat, 7. Drilling hydraulic motor, 8. Positioning sleeve, 9 , Lifting rod, 10, Preload spring, 11, Installation cavity, 12, Explosive cartridge, 13, Touch switch, 14, Ejector rod, 15, Positioning spring, 16, Abutment sleeve, 17, Limit spring, 18, Guide Rod, 19, Water supply section, 20, Flush section, 21, Steering seat, 22, Universal ball, 23, Pull spring, 24, Separation plate, 25, Connecting plate, 26, Chute, 27, Abutment post , 28, abutment spring, 29, rotary cutting hydraulic motor, 30, shaft, 31, transmission gear, 32, push cam, 33, driving bevel gear, 34, driven bevel gear, 35, driving gear, 36, water column , 37, annular water cavity, 38, fixed plate.

Detailed ways

Below by specific embodiment, and in conjunction with accompanying drawing, the technical scheme of the present invention is further described in detail:

Embodiment: A subsea slotted rotary cutting and water spray linkage device (see Figures 1 to 3), comprising a mounting frame 1, a drilling head 2 mounted on the mounting frame and a row of rotary cutting heads 3, a row of rotary cutting heads 3 The cutting heads deviate backwards from top to bottom. The front end of the rotary cutting head is inclined upward. A number of high-pressure flushing pipes 4 are installed on the rotary cutting head, and the open end of the high-pressure flushing pipe exposes the outer wall of the rotary cutting high-pressure head; a lifting hydraulic cylinder 5 and a liftable connecting seat 6 are installed on the mounting frame, and the piston rod of the lifting hydraulic cylinder is connected with the connecting seat. A drilling hydraulic motor 7 that drives the drilling head to rotate is installed on the seat, a positioning sleeve 8 is installed on the output shaft of the drilling hydraulic motor, a lifting rod 9 that can be raised and lowered is installed in the positioning sleeve, and a preload spring 10 is installed between the lifting rod and the positioning sleeve , the lifting rod and the positioning sleeve rotate synchronously, and the lifting rod and the drilling head are connected together. The lower end of the positioning sleeve is connected to the end cover, the upper end of the lifting rod is provided with a square sliding block, and the sliding block is slidably installed in the positioning sleeve and supported on the end cover.

A plurality of installation cavities 11 are arranged on the outer wall of the drilling head, and an explosive cartridge 12 is installed in the installation cavity. A number of ejector rods 14 are installed, a positioning spring 15 is connected between the ejector rod and the drilling head, an abutment sleeve 16 is slidably sleeved on the lifting rod, a limit spring 17 is installed between the abutment sleeve and the drilling head, and the upper ends of several ejector rods The height positions are different, the upper end of the abutting sleeve can abut on the positioning sleeve, and the lower end of the abutting sleeve can abut on the ejector rod and push the ejector rod to move downward. A guide rod 18 is installed on the mounting frame, and the connecting seat and the guide rod are movably sleeved together. There are positioning holes in the drilling head and the ejector rods, the ejector rods are fitted and inserted in the positioning holes, the lower end of the ejector rods are connected with a positioning nut, the upper part of the ejector rods is provided with a convex ring, and the positioning spring abuts against the convex ring and the drilling head between.

The high-pressure flushing pipe includes a water supply section 19 and a flushing section 20. The water supplying section is provided with a steering seat 21, one end of the flushing pipe is provided with a universal ball 22, and a pulling spring 23 is connected between the other end of the flushing pipe and the rotary cutting head. A spherical groove is provided, and the universal ball is rotated and installed in the spherical groove. A dividing plate 24 is correspondingly provided on the rotary cutting head and the flushing section, and the flushing section is placed outside the dividing plate.

A connecting plate 25 is installed on the mounting frame corresponding to the rotary cutting head, one end of the connecting plate is rotatably mounted on the mounting frame, the other end of the connecting plate is provided with a chute 26, and the mounting frame and the chute are correspondingly provided with abutting posts 27 for abutting The column is inserted into the chute, the abutment spring 28 is installed in the chute, and the abutment spring abuts on the abutment column; the rotary cutting head is connected to the rotating shaft 30 driven by the rotary cutting hydraulic motor 29, the rotary shaft and the rotary cutting hydraulic motor They are all installed on the connecting plate. The connecting plate is equipped with a transmission gear 31 and a push cam 32. The outer wall of the push cam can abut on the abutting column and push the connecting plate to move. The drive gear is connected to the driving bevel gear 33, and the push cam is connected to the slave The driving bevel gear 34, the driving bevel gear meshes with the driven bevel gear for transmission, the rotating shaft is provided with a driving gear 35 corresponding to the transmission gear, and the driving gear meshes with the transmission gear for transmission.

A water passage 36 is installed in the rotary cutting head, a mounting hole is arranged on the water passage, the rotating shaft passes through the installation hole, and an annular water cavity 37 is arranged in the water passage. 38. The fixed plate is fastened and installed on the connecting plate, and the fixed plate is provided with a water through hole communicating with the annular water cavity, and the water through hole is connected with the water supply pipe.

When the subsea slotting and rotary cutting and water spraying linkage are working, the cable-laying ship is used to lift and sink to the seabed first, and then the lifting hydraulic cylinder pushes the connecting seat to move down, and the drilling head is started to rotate to carry out the drilling operation on the seabed. While lifting the mounting frame, move forward and backward to expand the scope of drilling. When encountering hard rock during the drilling process, the preload spring can make the drilling head buffer upwards, produce the effect of shaking up and down, improve the drilling effect, and avoid the phenomenon of stuck and stagnant rotation. After the depth of the drill hole can accommodate all the rotary cutting heads, the drilling head stops rotating, and the lifting hydraulic cylinder drives the drilling head to move up and return to the original position. While the cutting head is rotated, it is pulled forward by the cable-laying vessel to perform the grooving operation. During the grooving process, the high-pressure water flow is sprayed outward through the high-pressure flushing pipe, and the sediment is sprayed out to prevent the sediment from slipping into the groove. This kind of subsea slotting rotary cutting and water spray linkage device directly flushes the sediment out of the groove through high-pressure water during the slotting operation on the seabed, so as to prevent the sediment from sliding into the groove, ensure the slotting depth, and is beneficial to Laying of submarine cables.

During the downward drilling process of the drilling head, when it encounters hard rock and cannot continue to drill down, the drilling head will move upward relative to the positioning sleeve at this time. When the upper end of the abutting sleeve abuts on the positioning sleeve, the lower end When the ejector rod is reached, the abutment sleeve pushes the ejector rod to move downward, and the lower end of the ejector rod abuts on the touch switch, triggering the corresponding explosive cartridge to explode, and the generated shock wave impacts the drilling position, smashing the rock, which is convenient for subsequent drilling. hole operation.

The rotation of the rotating shaft drives the rotary cutting head to rotate. During the rotation of the rotating shaft, it drives the cam to rotate, and pushes the cam to continuously slide over the abutment column, thereby pushing the connecting plate to move left and right, so as to realize the left and right swing of the rotary cutting head during the working process, which is beneficial to the rotary cutting. The slotting operation of the head can avoid the phenomenon of stuck and stopped rotation of the rotary cutting head.

The above-mentioned embodiments are only preferred solutions of the present invention, and do not limit the present invention in any form. There are other variations and modifications under the premise of not exceeding the technical solutions recorded in the claims.

Claims (6)

1. a seabed slotted rotary cutting and water spray linkage device, it is characterized in that, comprise mounting frame, the drilling head that is installed on the mounting frame and a row of rotary cutting heads, some high-pressure flushing pipes are installed on the rotary cutting head, and the high-pressure flushing heads are installed. The outer wall of the rotary cutting high pressure head is exposed at the open end of the water pipe; a lifting hydraulic cylinder and a liftable connecting seat are installed on the mounting frame, the piston rod of the lifting hydraulic cylinder is connected with the connecting seat, and a drilling hydraulic motor that drives the drilling head to rotate is installed on the connecting seat. A positioning sleeve is installed on the output shaft of the hole hydraulic motor, a lifting rod that can be lifted and lowered is installed in the positioning sleeve, a pre-tightening spring is installed between the lifting rod and the positioning sleeve, the lifting rod and the positioning sleeve rotate synchronously, and the lifting rod is connected with the drilling head; There are several installation cavities on the outer wall of the drilling head, and the explosive cartridge is installed in the installation cavity. The ejector rod, the positioning spring is connected between the ejector rod and the drilling head, the sliding sleeve on the lifting rod is provided with an abutting sleeve, and a limit spring is installed between the abutting sleeve and the drilling head. The upper end of the connecting sleeve can abut on the positioning sleeve, and the lower end of the abutting sleeve can abut on the ejector rod and push the ejector rod to move downward. 2 . The seabed slotting rotary cutting and water spray linkage device according to claim 1 , wherein a guide rod is installed on the mounting frame, and the connecting seat and the guide rod are movably sleeved together. 3 . 3. seabed slotting rotary cutting and water spray linkage device according to claim 1, is characterized in that, in the drilling head and the ejector rod correspondingly provided with positioning holes, the ejector rods are adapted to be inserted in the positioning holes, and the ejector rods are inserted into the positioning holes. The lower end is connected with the positioning nut, the upper part of the ejector rod is provided with a convex ring, and the positioning spring abuts between the convex ring and the drilling head. 4. seabed slotting rotary cutting and water spray linkage device according to claim 1, is characterized in that, high pressure flushing pipe comprises water supply section and flushing section, water supply section is provided with steering seat, and one end of flushing pipe is provided with universal direction A pulling spring is connected between the ball, the other end of the flushing pipe and the rotary cutting head, the steering seat is provided with a spherical groove, and the universal ball is rotated and installed in the spherical groove. 5 . The seabed slotted rotary cutting and water spray linkage device according to claim 4 , wherein the rotary cutting head and the flushing section are correspondingly provided with a dividing plate, and the flushing section is placed outside the dividing plate. 6 . 6. The seabed slotted rotary cutting and water spray linkage device according to any one of claims 1 to 5, wherein the mounting frame and the rotary cutting head are correspondingly installed with a connecting plate, and one end of the connecting plate is rotated and installed on the mounting frame The other end of the connecting plate is provided with a chute, the mounting frame is provided with an abutment column corresponding to the chute, the abutment column is inserted into the chute, the abutment spring is installed in the chute, and the abutment spring abuts on the abutment On the column; the rotary cutting head is connected to the rotating shaft driven by the rotary cutting hydraulic motor. Both the rotary shaft and the rotary cutting hydraulic motor are installed on the connecting plate. The driving gear is connected to the driving bevel gear, and the driving cam is connected to the driven bevel gear. The driving bevel gear meshes with the driven bevel gear for transmission. The rotating shaft is provided with a driving gear corresponding to the driving gear. Gear meshing transmission.

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