CN112377676B

CN112377676B - Method for laying submarine pipeline

Info

Publication number: CN112377676B
Application number: CN202011312368.3A
Authority: CN
Inventors: 陈懿; 韦淋睦; 王江; 谷文平; 包宗斌; 王良伟; 郭安罗; 郭小飞; 刘忠饶; 安万平; 宋兴祥
Original assignee: South China Marine Machinery Co Ltd
Current assignee: South China Marine Machinery Co Ltd
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2022-03-15
Anticipated expiration: 2040-11-20
Also published as: CN112377676A

Abstract

A method of laying a subsea pipeline, comprising the steps of: the equipment body is fixed and drives the pipe body to move to a preset base groove; the blanking bin carries out blanking through a blanking pipe, and primary blanking is carried out on the base groove; the lower bin slides towards the other end of the frame, so that the blanking tamping device can slide and carry out blanking; the equipment body is lifted upwards, the telescopic hydraulic cylinder is driven to contract, the movable supporting legs are retracted, and the equipment body is supported on a material pile formed by first blanking; according to a trough formed by material piles at two sides in the first blanking, the adjusting hydraulic cylinder drives the sliding part to slide, and pipe body adjusting devices at two ends of the rack are matched to adjust the position and the angle of a pipe body; unfastening the hoisting belt, and placing the pipe body in a trough formed by the first blanking pile; the blanking bin carries out blanking again, and secondary blanking is carried out on two sides of the pipe body; and the blanking sliding device drives the lower bin to slide towards the other end of the rack again to finish the laying of the pipe body. The invention has accurate pipeline installation and good locking effect.

Description

Method for laying submarine pipeline

Technical Field

The invention relates to the technical field of submarine pipeline laying, in particular to a method for laying a submarine pipeline.

Background

In the laying and leveling construction of the offshore (river) immersed tube foundation, before the immersed tube is installed, the stone throwing and leveling are carried out in the excavated foundation trench, and then the prefabricated immersed tube is floated to the upper part of the foundation bed and is sunk and installed.

The riprap foundation bed is used for replacing the original soft soil layer to improve the bearing capacity of the foundation, so that the load transmitted by the upper structure is uniformly transmitted to the foundation to meet the requirements of deformation and stability, the water permeability of the riprap foundation bed is fully utilized, the water level difference between the front and the back of a building is reduced, seepage is avoided, and the foundation is protected from being washed by waves and water currents. The foundation bed needs to be leveled and tamped and is guaranteed to be a plane, and the foundation bed needs to be a horizontal plane or an inclined plane.

In order to solve the technical problem, a riprap leveling device is disclosed in patent document with the Chinese patent number of 201310009110.X and the publication date of 2016.02.03, and comprises a riprap tube, wherein the top and the bottom of the riprap tube are respectively provided with a GPS (global positioning system) and a leveling head, the leveling head is used for leveling a foundation bed, and the GPS is used for confirming the plane position and the bottom elevation of the riprap tube. The stone throwing pipe comprises an upper part and a lower part, wherein the upper part is a fixed main pipe, the lower part is a telescopic balance pipe, and the balance pipe is connected with the leveling head. And a sonar system is arranged on the leveling head and used for detecting the elevation of the seabed slot bed and the foundation bed.

However, according to the technical solution disclosed in the patent document, when the immersed tube is immersed in the foundation bed, there is no technical means for adjusting the angle of the immersed tube, the accuracy of the immersed tube installation is not high, and when the immersed tube is tamped with crushed stone, the immersed tube needs to be completely covered with the crushed stone, which requires a large amount of crushed stone, and the tamping effect is not good.

Disclosure of Invention

The underwater pipeline locking method has the advantages that underwater pipelines are accurately installed, the using amount of stone materials is small, the pipeline locking effect is good, the pipelines can be accurately installed under water by the method, the locking efficiency is improved, the locking effect is good, and the using amount of stone materials is reduced.

In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a method for lay submarine pipeline, realizes through the equipment of laying submarine pipeline, and the equipment of laying submarine pipeline includes the hull, installs the hoisting mechanism on the hull, through the equipment body of hoisting by hoisting mechanism hoist and mount hull unloading mechanism on the hull, its characterized in that: more than one advancing guide rail is arranged on one side of the ship body, and the ship body blanking mechanism is arranged on the advancing guide rail in a sliding mode.

The equipment body comprises a rack, a lower storage bin, a pipe connecting device and a discharging locking device, wherein the lower storage bin is arranged on the rack in a sliding mode, the pipe connecting device is arranged on the rack, the discharging locking device is connected to the lower end of the lower storage bin and located on two sides of the pipe connecting device, and the pipe connecting device is used for fixing a pipe and adjusting the position of the pipe.

The blanking device comprises a frame, a blanking bin and a driving mechanism, wherein the two sides of the blanking bin are provided with blanking sliding devices, one side of each blanking sliding device is connected with the driving mechanism, the two sides of the frame are provided with guide rails, the blanking sliding devices are connected with the guide rails in a sliding mode, and the blanking bin is connected to the frame in a sliding mode through the blanking sliding devices.

The pipe body connecting device comprises a pipe body adjusting device and a pipe body fixing device, the pipe body adjusting device is arranged on the rack, and the pipe body fixing device is connected to the pipe body adjusting device; the pipe body adjusting device comprises a cross beam, an adjusting hydraulic cylinder, a sliding part and a rotating mechanism, wherein the cross beam is arranged on the rack in a longitudinally sliding manner, a through hole extending up and down is formed in the cross beam, and a front and rear adjusting hydraulic cylinder is arranged between the rack and the cross beam; the adjusting hydraulic cylinder is hinged on the rack, the sliding part is arranged on the cross beam in a sliding manner, a piston rod of the adjusting hydraulic cylinder is hinged on the sliding part, a rotating mechanism penetrating through the through hole is arranged on the sliding part, and a gap is reserved between the rotating mechanism and the through hole; the pipe fixing device comprises a connecting rod, a connecting rod and a fixing block, the connecting rod is hinged to the rotating mechanism, the connecting rod is connected to the connecting rod, the fixing block is connected to the connecting rod, hoisting rings are arranged on two sides of the connecting rod and two sides of the fixing block respectively, and hoisting belts used for fixing the pipe are arranged on the hoisting rings.

One end of the blanking locking device is connected with the blanking bin, and the other end of the blanking locking device is arranged towards the direction close to the pipe fixing device.

The two ends of the rack are respectively provided with a movable supporting leg, and the movable supporting legs are provided with telescopic hydraulic cylinders.

The ship body blanking mechanism comprises a base, a travelling mechanism, two lifting winches, blanking hoppers, a ship body blanking pipe and a pipe placement frame, wherein the travelling mechanism is arranged at the bottom of the base and is in sliding connection with a travelling guide rail, the blanking hoppers are connected with one side of the base, the two lifting winches are arranged and are respectively arranged at two sides of the blanking hoppers, the lower ends of the blanking hoppers are detachably connected with one end of the ship body blanking pipe, more than two groups of symmetrically arranged connecting pieces are respectively arranged at the connecting parts of the ship body blanking pipe and the blanking hoppers, and the ship body blanking pipe and the blanking hoppers are respectively detachably connected through bolts on the connecting pieces; a lifting lug is arranged at one end of the hull blanking pipe far away from the blanking hopper, and a steel wire rope on the hoisting winch is connected with the lifting lug; the material pipe rest stand is rotationally connected with the ship board on one side of the ship body close to the ship body blanking mechanism, and more than two material pipe rest stands are arranged.

The method for laying the submarine pipeline comprises the following steps:

1) the hoisting winch on one side of the blanking hopper loosens the steel wire rope, and the hoisting winch on the other side of the blanking hopper retracts the steel wire rope, so that the hull blanking pipe rotates around the connecting piece provided with the bolt, and one end of the hull blanking pipe rotates underwater.

2) The pipe body is fixed through a hoisting belt on the pipe body connecting device; hoisting the equipment body by a hoisting mechanism on the ship body, putting the equipment body under water and moving the equipment body to a preset foundation trench; and the position of a discharging bin on the equipment body is adjusted.

3) The feeding hopper is used for feeding stone materials to the feeding bin through the ship body feeding pipe, the feeding bin is used for feeding materials through the feeding locking device, and the base groove is used for feeding materials for the first time.

4) The blanking sliding device drives the blanking bin to slide towards the other end of the rack, and meanwhile, the hull blanking mechanism moves synchronously, so that the blanking locking device can slide and carry out blanking at the same time.

5) The equipment body is lifted upwards, the telescopic hydraulic cylinder is driven to shrink, the movable supporting legs are folded, and the equipment body is supported above the foundation trench for first blanking through the movable supporting legs.

6) And adjusting the position and the angle of the pipe body through the pipe body adjusting device according to the position of the base groove for the first blanking.

7) Unfastening the hoisting belt, and placing the pipe body in the base groove of the first blanking.

8) The blanking bin carries out the unloading once more through the unloading pipe, and unloading locking device carries out the unloading of second time in the both sides of body.

9) And the blanking sliding device drives the blanking bin to slide towards the other end of the rack again to complete the locking of the pipe body.

According to the method, the pipe body is fixed below the rack on the equipment body on the ship body through the pipe body connecting device, and the equipment body is lifted by the lifting mechanism on the ship body and is placed under water; a lifting winch on one side of the blanking hopper loosens the steel wire rope, and a lifting winch on the other side of the blanking hopper retracts the steel wire rope, so that the hull blanking pipe rotates around the connecting piece provided with the bolt, and one end of the hull blanking pipe rotates underwater; the method comprises the following steps that a diver manually butts the lower end of a ship body blanking pipe with an equipment body, the equipment body fixes the pipe body below a rack through a pipe body connecting device, the equipment body is moved to a preset base groove, a blanking bin and a blanking locking device slide along the rack to carry out primary blanking, broken stones in the blanking bin are laid on the base groove along two sides of the pipe body, the pipe body fixing device is adjusted by driving a pipe body adjusting device, and the position of the pipe body is adjusted, so that the aim of accurate installation is fulfilled by adjusting the position and the angle of the pipe body; then the pipe body is released between the crushed stones on the two sides by the pipe body fixing device, then the blanking locking device carries out secondary blanking, the crushed stones in the blanking bin are laid on the two sides of the pipe body, and the locking of the pipe body is completed.

After the pipeline is laid, the blanking pipe and the blanking bin of the ship body are separated manually by a diver, and the hoisting mechanism hoists the equipment body back to the ship body; the driving advancing mechanism drives the hull blanking mechanism to move to one side of the advancing guide rail, the bolt on the connecting piece far away from the placement frame is detached, the lifting winch close to one side of the placement frame is used for retracting the steel wire rope, the lifting winch far away from one side of the placement frame is used for loosening the steel wire rope, so that the hull blanking pipe rotates and is lifted around the connecting piece with the bolt, when the hull blanking pipe is lifted above the material pipe placement frame, the material pipe placement frame rotates and rotates to the lower side of the hull blanking pipe, the placement action is completed, and therefore the pipeline laying efficiency is high.

In addition, the pipe body connecting device fixes the pipe body through the hoisting belt, when the pipe body connecting device is driven by the pipe body adjusting device, if the pipe body collides with a topographic structure or broken stones in the foundation trench, the flexible fixed pipe body is hoisted through the hoisting belt, so that the possibility of damage of the pipe body during collision can be effectively reduced, and the pipe body is convenient to hoist or release.

Further, unloading locking device includes unloading pipe and high-pressure squirt, the mouth of pipe of unloading pipe one end is articulated with unloading storehouse, and the mouth of pipe of the other end sets up to the direction that is close to body fixing device, and the high-pressure squirt sets up in the orificial one side of unloading pipe, above setting, and the building stones in the unloading storehouse are discharged with the mouth of pipe of unloading pipe, and the high-pressure squirt that sets up in the mouth of pipe one side of unloading pipe promotes the building stones to the body direction, and like this, the building stones are accurately laid in the both sides of body, reduce the lock solid building stones quantity, and the lock solid is effectual.

Further, the fixed block lower extreme is equipped with elastic buffer, and elastic buffer is in the arc that is close to one side of body for matcing with the body. Like this, when producing the contact extrusion between fixed block and the body, curved elastic buffer can play the cushioning effect to the body.

Further, the guide rail is arranged at the top of the frame and is a T-shaped guide rail; the blanking sliding device comprises a blanking sliding frame and a blanking wheel set, the blanking bin is fixed on the blanking sliding frame, and the blanking wheel set is arranged on two sides of the blanking sliding frame and is in sliding connection with the guide rails.

The blanking wheel set comprises a blanking wheel seat, a blanking limit pulley, a blanking side pulley and a blanking main wheel, and the blanking limit pulley, the blanking side pulley and the blanking main wheel are respectively arranged on the blanking wheel seat; the blanking limiting pulleys are connected with the bottom surface of the top of the T-shaped guide rail in a sliding mode, two blanking side-sliding wheels are arranged, the two blanking side-sliding wheels are clamped and connected to two sides of the top of the T-shaped guide rail in a sliding mode, and the blanking main wheels are arranged on the top of the T-shaped guide rail; the driving mechanism is arranged on the blanking wheel seat and drives the blanking main wheel, and the driving mechanism is a motor; and a second T-shaped guide rail is further arranged on the T-shaped guide rail, the blanking main wheel is a rail wheel, and the blanking main wheel is connected to the second T-shaped guide rail in a sliding manner.

According to the arrangement, when the motor drives the blanking main wheel to drive the blanking bin to move, the blanking sliding device can bear the blanking bin to stably slide on the rack, and the blanking wheel set is clamped and slidably connected on the T-shaped guide rail; in addition, the blanking main wheel is a rail wheel and is matched with a second T-shaped guide rail on the T-shaped guide rail, so that the guide effect is achieved, and the stability of the blanking sliding device during sliding is improved.

Furthermore, a swing adjusting hydraulic cylinder is hinged to the discharging bin, and a piston rod of the swing adjusting hydraulic cylinder is hinged to the discharging tube. This structure, after one of them articulated position of loosening unloading pipe, can let the unloading pipe swing through swing adjusting hydraulic cylinder, be convenient for install body and ejection of compact.

Furthermore, a rotating mechanism is arranged on one side of the material pipe placement frame, the rotating mechanism comprises a rotating piece and a rotating shaft pin, and the rotating shaft pin penetrates through and is rotatably connected with the rotating piece; when the ship body discharging pipe is used, the rotating mechanism drives the placing frame to rotate and attach to a ship board, and the lifting winch is used for lowering the steel wire rope to enable the ship body discharging pipe to rotate.

Furthermore, a coupling mechanism is arranged between the hoisting belts on each side of the connecting rod respectively, the coupling mechanism comprises a coupling rod and a universal coupling, the universal coupling is connected with the coupling rod, and two ends of the coupling mechanism are connected with the hoisting belts on one side of the connecting rod respectively.

Furthermore, four groups of symmetrically arranged connecting pieces are arranged at the connecting part of the hull blanking pipe and the blanking hopper; the two lifting winches are arranged and are respectively arranged at two sides of the blanking hopper; one end of the lifting winch, which is close to the hull blanking pipe, is also provided with a guide wheel; the hull blanking pipe is a multi-section telescopic pipe body, and the telescopic pipe bodies are connected with the outer wall of another telescopic pipe body sequentially through the inner wall of the telescopic pipe body. Therefore, the hull blanking pipe and the blanking hopper are stably connected; when the hoisting winch is driven, a steel wire rope of the hoisting winch is connected with a lifting lug of a hull blanking pipe through a guide wheel, so that the hull blanking pipe rotates more stably; in addition, the hull blanking pipe is a multi-section telescopic pipe body and can adapt to different depths of seabed to fix the pipe body.

Furthermore, the hoisting mechanism comprises a hoisting walking device and a hoisting device arranged on the hoisting walking device; the hoisting device is provided with more than one hoisting device. Therefore, the device body is safer and more stable in hoisting.

Further, the rotating mechanism comprises a bearing seat, a bearing end cover and a rotating shaft; the bearing block is arranged on the sliding part, the bearing is arranged in the bearing block, the bearing end cover is arranged on the bearing block, the rotating shaft is arranged on the bearing and penetrates through the bearing block and the through hole, a gap is arranged between the through hole and the rotating shaft, and the gap is larger than the moving space of the rotating shaft. The structure is convenient for the rotation of the rotating shaft, and can not be blocked when the angle of the pipe body is adjusted.

Drawings

Fig. 1 is a schematic top view of the present invention.

Fig. 2 is a schematic front view of the hull and the hoisting mechanism of the present invention.

Fig. 3 is a schematic structural view of the hull and the hull blanking mechanism in the invention.

Fig. 4 is a schematic side view of the hull and the hull blanking mechanism according to the present invention.

Fig. 5 is a side view of the apparatus body according to the present invention.

Fig. 6 is a schematic front view of the apparatus body according to the present invention.

Fig. 7 is a schematic top view of the apparatus body according to the present invention.

Fig. 8 is a schematic top view of the apparatus body of the present invention for adjusting the position of the pipe.

Fig. 9 is a partially enlarged schematic view of a portion a in fig. 2. Fig. 10 is a partially enlarged schematic view of a portion B in fig. 3.

Fig. 11 is a partially enlarged schematic view at C in fig. 4.

Fig. 12 is a partially enlarged schematic view of fig. 5 at D.

Fig. 13 is a partially enlarged schematic view at E in fig. 6.

Fig. 14 is a partially enlarged schematic view at F in fig. 7.

Fig. 15 is a schematic side view of the first blanking of the pipe body installed on the apparatus body according to the present invention.

Fig. 16 is a schematic side view of the apparatus body of the present invention, illustrating the second blanking of the pipe body.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 16, an apparatus for laying a submarine pipeline includes a hull 4, a hoisting mechanism 7 mounted on the hull 4, an apparatus body hoisted by the hoisting mechanism 7, a hull blanking mechanism mounted on the hull 4, and a pipe body 2 mounted on a predetermined foundation trench, wherein one side of the hull 4 is provided with at least one traveling guide rail 41, the traveling guide rail 41 is arranged along the length direction of the hull 4, and the hull blanking mechanism is slidably arranged on the traveling guide rail 41.

The two ends of the ship body 4 on the advancing guide rail 41 are respectively provided with a limiting block 42. The hull blanking mechanism comprises a base 61 of a base, wherein first buffer parts 611 are respectively arranged at two ends of the base close to a limiting block 42, and an anti-collision plate is arranged on one side of each first buffer part. Above setting can prevent that hull unloading mechanism roll-off from advancing the guide rail, and first bolster can cushion when hull unloading mechanism slides to advancing the guide rail end, prevents that hull unloading mechanism from damaging, even hit the stopper on, the anticollision board also can play the guard action to hull unloading mechanism.

The advancing guide rail 41 is an I-shaped guide rail; the advancing mechanism 62 comprises two advancing wheels 621 and an advancing drive, wherein the two advancing wheels 621 are arranged, and the advancing wheels are arranged in the groove of the I-shaped guide rail in a sliding manner, so that the advancing wheels of the advancing mechanism are connected in the I-shaped guide rail in a sliding manner and can play a role in guiding and limiting the advancing mechanism. The advancing drive comprises an advancing motor 91, a gear 92 and a rack 93, wherein the advancing motor 91 is installed on the base 61, the gear 92 is installed on an output shaft of the advancing motor 91, the rack is installed on the advancing guide rail 41, the gear 92 is meshed on the rack 93, and when the advancing motor 91 works, the gear and the rack act to move the ship blanking mechanism.

The hoisting mechanism 7 is arranged on the ship body 4; the hoisting mechanism 7 comprises a hoisting travelling device 71 and a hoisting device 72 arranged on the hoisting travelling device 71; the lifting device 72 is provided with more than one lifting device. The crane 72 is moved by providing the crane traveling device 71. In the present embodiment, two lifting devices 72 are provided; the two hoisting devices are symmetrically arranged on the ship body; the lifting device 72 is a crane. The hoisting device is prior art and will not be described herein in a repeated manner.

The hoisting travelling device 71 comprises a hoisting guide rail 711 and a hoisting moving part 712 movably arranged on the hoisting guide rail 711; the two sides of the lifting guide rail 711 are respectively provided with a lifting guide groove 713; the two hoisting guide grooves are symmetrically arranged. One lifting moving piece 712 is provided with four lifting moving branches 715; the end of each lifting moving branch 715 is provided with a lifting moving wheel set; the lifting moving wheel group is provided with two lifting moving wheels 714; the two hoisting moving wheels are symmetrically arranged around the hoisting guide rail 711; a lifting moving wheel 714 is installed in the lifting guide groove 713 at one side.

The device body 1 comprises a frame 11, a blanking bin 12, a pipe body connecting device 13 and a blanking locking device 14, wherein the frame 11 comprises longitudinal beams 111, the longitudinal beams 111 are arranged along the length direction of the frame, and in the embodiment, two longitudinal beams 111 are arranged. The lower bin 12 is arranged on the rack 11 in a sliding mode, the pipe connecting device 13 is arranged on the rack 11, the lower locking device 14 is connected to the lower end of the lower bin 12 and located on two sides of the pipe connecting device 13, and the pipe connecting device 13 is used for fixing the pipe 2 and adjusting the position of the pipe 2.

Be equipped with unloading slider 121 on the feed bin 12 down, one side of unloading slider 121 is connected with actuating mechanism, be equipped with the guide rail 110 that extends along length direction on the both sides of frame 11, unloading slider 121 sliding connection guide rail 110, feed bin 12 passes through unloading slider 121 sliding connection on frame 11 down.

The pipe connecting device 13 includes a pipe adjusting device 131 and a pipe fixing device 132, the pipe adjusting device 131 is disposed on the frame 11, and the pipe fixing device 132 is connected to the pipe adjusting device 131.

According to the arrangement, the pipe body is fixed below the rack through the pipe body connecting device by the equipment body, the equipment body is moved to the preset foundation groove, the blanking bin and the blanking locking device slide along the rack to perform primary blanking, broken stones in the blanking bin are laid on the foundation groove along two sides of the pipe body, and the pipe body fixing device is adjusted by driving the pipe body adjusting device, so that the position of the pipe body is adjusted, and the purpose of adjusting the position and the angle of the pipe body is achieved; then the pipe body is released between the crushed stones on the two sides by the pipe body fixing device, then the blanking locking device carries out secondary blanking, the crushed stones in the blanking bin are laid on the two sides of the pipe body, and the locking of the pipe body is completed.

The blanking bin 12 comprises a body 121a and extension pipes 122a extending downwards from two sides of the body, wherein a cavity 123a is arranged in the body, and a material distributing part 124a is arranged in the middle of the cavity.

The tube adjusting device 131 includes a beam 1310, a front-rear adjusting hydraulic cylinder 1313, an adjusting hydraulic cylinder 1311, a sliding portion 1312, and a rotating mechanism 1314.

The crossbeam 1310 is arranged along the width direction of the frame 4, the crossbeam 1310 is provided with more than two, the supporting feet with the same quantity as the crossbeams are arranged on the inner side of each longitudinal beam 111, the supporting feet positioned at the corresponding positions in the width direction on the two longitudinal beams form a supporting foot group, the supporting feet comprise a lower supporting foot 113 and an upper supporting foot 114, the lower supporting foot 113 and the upper supporting foot 114 are respectively welded on the longitudinal beam 111, a sliding space is formed between the lower supporting foot 113 and the upper supporting foot 114, the end part of the crossbeam 1310 is slidably inserted into the sliding space, a lower wear-resistant pad 115 is supported and arranged on the crossbeam 1310 and the lower supporting foot 113, and a side wear-resistant pad 116 is arranged between the end surface of the crossbeam 1310 and the longitudinal beam 111.

The cylinder body of the front and rear adjusting hydraulic cylinder 1313 is hinged on the frame 11, the piston rod of the front and rear adjusting hydraulic cylinder 1313 is hinged on the cross beam 1310, in this embodiment, two front and rear adjusting hydraulic cylinders 1313 are provided, and all are located at one end of the frame.

The beam 1310 is provided with a through hole 13101.

The adjusting hydraulic cylinder 1311 is transversely arranged, the adjusting hydraulic cylinder 1311 is hinged to the frame 11, the sliding part 1312 is arranged on the cross beam 1310 in a sliding manner, and a piston rod of the adjusting hydraulic cylinder 1311 is hinged to the sliding part 1312. In the present embodiment, the sliding part 1312 is a sliding plate having a size larger than that of the through hole, so that the sliding part 1312 does not fall into the through hole 13101 while moving with respect to the cross member.

The slide 1312 is provided with a rotation mechanism 1314. The rotary mechanism 1314 includes a bearing block 13141, a bearing 13142, a bearing cap 13143, and a rotary shaft 13144. Bearing block 13141 is mounted on slide 1312, bearing 13142 is mounted in bearing block 13141, bearing cap 13143 is mounted on bearing block 13142, and rotating shaft 13144 is mounted on bearing block 13142 and passes through bearing block and through hole 13101, with gap 13145 between through hole 13101 and rotating shaft 13144, which gap 13145 is greater than the space through which rotating shaft 13144 moves. In this embodiment, the bearing is an inverted tapered roller bearing, the rotating shaft 13144 includes a blocking portion 131441, a first step shaft 131442 and a second step shaft 131443 which are sequentially connected from top to bottom and have sequentially reduced diameters, the blocking portion 131441 is located above the bearing 13142, an inner ring of the bearing 13142 blocks the blocking portion 131441, the second step shaft 131442 is located inside the bearing inner ring and the bearing seat, and a shaft sleeve 13145 is arranged between the inner ring of the bearing 131442 and the second step shaft 131442 to prevent the rotating shaft and the bearing from contacting with each other, so as to protect the bearing. A sealing ring 13145 is provided between the bearing seat and the bearing end cap to improve sealing performance.

The pipe fixing device 132 includes a connecting rod 1320, a connecting rod 1321 and a fixing block 1322, the connecting rod 1320 is hinged to the rotating shaft, the connecting rod 1321 is fixed to the connecting rod 1320, the fixing block 1322 is fixedly connected to the connecting rod 1321, at least two fixing blocks 1322 are provided, two hoisting rings 13221 are provided on both sides of the connecting rod 1321 and the fixing block 1322, in this embodiment, at least two hoisting rings 13221 are installed on each side of the fixing block 1322, at least two hoisting rings 13221 are provided on each side of the connecting rod 1321, hoisting belts 13222 for fixing a pipe are provided on the hoisting rings 13221, a coupling mechanism 13211 is provided between the hoisting belts 13221 on the same side of the connecting rod 1321, the coupling mechanism includes a coupling rod 132111 and a universal coupling 132112, the universal coupling 132112 is connected by a coupling 132111, the above arrangement is provided, the pipe connecting device fixes the pipe by the hoisting belts, when being driven by the pipe adjusting device, if the pipe collides with a topographic structure or crushed stone in the base groove, the flexible fixing pipe body is hoisted through the hoisting belt, the traditional rigid fixing is replaced by the flexible fixing, the possibility of damage of the pipe body in collision can be effectively reduced, and the pipe body is convenient to hoist or release.

The lower end of the fixing block 1322 is provided with an elastic buffer component 13223, and one side of the elastic buffer component 13223 close to the pipe body is in an arc shape matched with the pipe body. Like this, when producing between fixed block and the body and extrude the extrusion, curved elastic buffer can play the cushioning effect to the body.

The guide rail 110 is arranged at the top of the frame 11, and the guide rail 110 is a T-shaped guide rail; the blanking sliding device 121 includes a blanking carriage 1211 and a blanking wheel set 1212, the blanking bin 12 is fixed on the blanking carriage 1211, and the blanking wheel set 1212 is disposed at two sides of the blanking carriage 1211 and slidably connected to the guide rail 110. Therefore, the discharging bin can slide on the frame through the discharging sliding device, and stone can be laid conveniently.

The blanking wheel set 1212 comprises a blanking wheel seat 12120, a blanking lower limit pulley 12121, a blanking side sliding wheel 12122 and a blanking main wheel 12123, the blanking wheel set 1212 is connected with the blanking sliding carriage 1211 through the blanking wheel seat 12120, and the blanking lower limit pulley 12121, the blanking side sliding wheel 12122 and the blanking main wheel 12123 are respectively arranged on the blanking wheel seat 12120; the lower blanking limiting pulleys 12121 are slidably connected with the bottom of the upper end of the T-shaped guide rail, two blanking side pulleys 12122 are arranged, the blanking side pulleys 12122 are clamped and slidably connected with two sides of the top of the T-shaped guide rail, and the main blanking wheel 12123 is arranged on the top of the T-shaped guide rail; the driving mechanism is arranged on the blanking wheel seat 12120 and drives the blanking main wheel 12123, and the driving mechanism is a motor; the T-shaped guide rail is also provided with a second T-shaped guide rail 1111, the blanking main wheel 12123 is a rail wheel, the blanking main wheel 12123 is connected to the second T-shaped guide rail 1111 in a sliding manner, and when the motor drives the blanking main wheel to drive the blanking bin to move, the blanking sliding device can bear the blanking bin to slide on the rack stably, and the blanking wheel set is connected to the T-shaped guide rail in a clamping and sliding manner; in addition, the main wheel of the blanking slave is a rail wheel which is matched with a second T-shaped guide rail on the T-shaped guide rail, so that the guide effect is achieved, and the stability of the blanking sliding device during sliding is improved.

The unloading locking device 14 comprises a unloading pipe 141 and a high-pressure water gun 142, wherein a pipe orifice at one end of the unloading pipe 141 is hinged to the unloading bin 12, the outer side of the specific unloading pipe 141 is hinged to the unloading bin, the other side of the unloading pipe 141 is connected with the unloading bin 12 through a pin shaft, a pipe orifice at the other end of the unloading pipe 141 is arranged in the direction close to the pipe fixing device 13, the high-pressure water gun 142 is arranged on one side of the pipe orifice of the unloading pipe 141, one end, far away from the unloading bin 12, of the unloading pipe is bent in the direction close to another unloading pipe, the unloading pipe 141 is arranged in the above manner, stone in the unloading bin is discharged from the pipe orifice of the unloading pipe, and the high-pressure water gun arranged on one side of the pipe orifice of the unloading pipe pushes the stone to the pipe body direction.

Frame 11 bottom is equipped with extension 110a that extends downwards, the both ends of frame 11 are equipped with movable supporting legs 15 respectively, movable supporting legs 15 include the flexible foot more than two sections, adjacent flexible foot activity cup joints, is equipped with flexible pneumatic cylinder between the adjacent flexible foot, the flexible foot of topmost is fixed in the frame, like this, then can let movable supporting legs stretch out and draw back through the flexible pneumatic cylinder 151 of control, realizes the effect of regulation. A swing adjusting hydraulic cylinder 16 is hinged on the blanking bin 12, and a piston rod of the swing adjusting hydraulic cylinder 16 is hinged on the blanking pipe. Therefore, when the pipe body is fixed on the pipe body connecting device through the equipment body, the feeding pipe can be driven to rotate and open by the aid of the pin shaft which is pulled out through the swinging adjusting hydraulic cylinder, the pipe body is convenient to fix, and interference is avoided.

Due to the arrangement of the telescopic hydraulic cylinder. Like this, when carrying out the unloading for the second time, the equipment body supports on the rubble of unloading for the first time through the movable supporting legs, adjusts the height of movable supporting legs through flexible pneumatic cylinder, can adjust equipment body position more accurately.

And a GPS positioning system is arranged on the equipment body 1. Therefore, the plane position of the equipment body is confirmed through the GPS, and the accuracy of the equipment body in the process of installing the pipe body can be improved.

And measuring frames 16 are arranged at two ends of the machine frame 11, so that the underwater depth of the equipment body can be intuitively known.

The ship body blanking mechanism comprises a base 61, a traveling mechanism 62, a lifting winch 63, a blanking hopper 64, a ship body blanking pipe 65 and a pipe placement frame 66, wherein the traveling mechanism 62 is arranged at the bottom of the base 61 and is in sliding connection with a traveling guide rail 41, the blanking hopper 64 is connected with one side of the base, the lifting winch 63 is provided with two parts which are respectively arranged at two sides of the blanking hopper 64, the lower end of the blanking hopper 64 is detachably connected with one end of the ship body blanking pipe 65, more than two groups of symmetrically arranged connecting pieces are respectively arranged at the connecting part of the ship body blanking pipe 65 and the blanking hopper 64, the connecting pieces are flanges 601, and the ship body blanking pipe 65 and the blanking hopper 64 are respectively detachably connected through bolts 600 on the connecting pieces; a lifting lug 651 is arranged at one end, far away from the blanking hopper, of the hull blanking pipe 65, and a steel wire rope 632 on the lifting winch 63 is connected with the lifting lug 651; the material pipe rest 66 is connected with the side of the ship body close to the ship body blanking mechanism in a rotating way, and more than two material pipe rest are arranged.

One end of the lifting winch close to the hull blanking pipe is also provided with a guide wheel 631; the hull blanking pipe is a plurality of sections of telescopic pipe bodies 652, and the telescopic pipe bodies are connected with the outer wall of another telescopic pipe body sequentially through the inner wall of the telescopic pipe body. Therefore, the hull blanking pipe and the blanking hopper are stably connected; when the hoisting winch is driven, a steel wire rope of the hoisting winch is connected with a lifting lug of a hull blanking pipe through a guide wheel, so that the hull blanking pipe rotates more stably; in addition, the hull blanking pipe is a multi-section telescopic pipe body and can adapt to different depths of seabed to fix the pipe body.

A rotating mechanism 661 is arranged on one side of the material pipe placing frame 66, the rotating mechanism 661 comprises a rotating member and a rotating shaft pin, and the rotating shaft pin penetrates through and is rotatably connected with the rotating member; when the ship body is used for discharging the material, the rotating mechanism drives the placing frame to rotate and attach to the ship board, and the hoisting winch is lifted to put down the steel wire rope so as to rotate the ship body discharging pipe.

The lower hopper is poured into to the building stones through the machineshop car 8 on the hull 4, is equipped with windproof guy 81 on one side of base on the hull 4, and the hull 4 is connected to windproof guy 81 one end, and the connection base can be dismantled to the other end, can fix when hull unloading mechanism does not use.

The method for laying the submarine pipeline comprises the following steps:

The operating principle of the equipment body is as follows: firstly, the lower end of the blanking pipe 141 swings outwards by using the adjusting hydraulic cylinder 16, and the pipe body is bound on the fixed block 132 through a hoisting belt 13221; then, hoisting the submarine pipeline laying equipment bound with the pipe body 2 to a position on the seabed where a base groove is pre-opened by a crane arranged on a ship, and adjusting the height of the movable supporting leg by a telescopic hydraulic cylinder 151; the feeding pipe 100 connected with the ship body is used for feeding materials to the lower material bin 12, stones falling into the lower material bin 12 are divided into two paths under the action of the material dividing part 124a and respectively enter the lower material pipe 141 and fall into the foundation trench to realize stone material laying, in the laying process, the lower material sliding device 121 is driven by the driving mechanism, the lower material bin and the lower material pipe are driven by the lower material sliding device 121 to move along the length direction of the rack, the continuous laying is realized, and the feeding is stopped after the laying is finished; then the position of the pipe body is adjusted, and the specific adjusting method comprises the following steps: if the front and back direction of the pipe body needs to be adjusted, the front and back adjusting hydraulic cylinder 1313 is started, and the front and back adjusting hydraulic cylinder 1313 drives the pipe body adjusting device 131 and the pipe body fixing device 132 to move back and forth, so that the purpose of adjusting the front and back position of the pipe body is achieved; if the height of the pipe body needs to be adjusted, the movable supporting legs are adjusted through the telescopic hydraulic cylinder 151 to achieve adjustment; when the adjustment of the swing angle of the pipe body is required, the adjustment cylinder 1311 is actuated, the slide portion 1312 slides on the cross member, and since there is a gap between the rotary shaft 13144 and the through hole, the rotary shaft rotates without interference in the sliding of the slide portion 1312, and fine adjustment of the angle is achieved.

When the position of the pipe body 2 is adjusted, the hoisting belt 13222 is loosened, and the pipe body enters the foundation pit 3 paved with stones.

Then, the feeding pipe 100 connected with the ship body is used for feeding materials to the lower material bin 12, stones falling into the lower material bin 12 are divided into two paths under the action of the material distributing part 124a and respectively enter the lower material pipe 141 and fall into two sides of the pipe body, the stones are impacted by a high-pressure water gun to be tightly locked into two sides of the pipe body, in the locking process, the lower material sliding device 121 is driven by the driving mechanism, the lower material bin and the lower material pipe are driven by the lower material sliding device 121 to move along the length direction of the rack, continuous locking is achieved, and feeding is stopped after locking is completed.

After the process is completed, the submarine pipeline laying equipment is hoisted by using the crane to lay other pipe bodies by using the process.

Claims

1. The utility model provides a method for lay submarine pipeline, realizes through the equipment of laying submarine pipeline, and the equipment of laying submarine pipeline includes the hull, installs the hoisting mechanism on the hull, through the equipment body of hoisting by hoisting mechanism hoist and mount hull unloading mechanism on the hull, its characterized in that: more than one travelling guide rail is arranged on one side of the ship body, and the ship body blanking mechanism is arranged on the travelling guide rails in a sliding manner;

the equipment body comprises a rack, a blanking bin, a pipe body connecting device and a blanking locking device, wherein the blanking bin is arranged on the rack in a sliding mode, the pipe body connecting device is arranged on the rack, the blanking locking device is connected to the lower end of the blanking bin and located on two sides of the pipe body connecting device, and the pipe body connecting device is used for fixing a pipe body and adjusting the position of the pipe body;

the blanking device comprises a frame, a blanking bin, a driving mechanism, a blanking sliding device, a guide rail and a guide rail, wherein the blanking sliding device is arranged on two sides of the blanking bin;

the pipe body connecting device comprises a pipe body adjusting device and a pipe body fixing device, the pipe body adjusting device is arranged on the rack, and the pipe body fixing device is connected to the pipe body adjusting device; the pipe body adjusting device comprises a cross beam, an adjusting hydraulic cylinder, a sliding part and a rotating mechanism, wherein the cross beam is arranged on the rack in a longitudinally sliding manner, a through hole extending up and down is formed in the cross beam, and a front and rear adjusting hydraulic cylinder is arranged between the rack and the cross beam; the adjusting hydraulic cylinder is hinged on the rack, the sliding part is arranged on the cross beam in a sliding manner, a piston rod of the adjusting hydraulic cylinder is hinged on the sliding part, a rotating mechanism penetrating through the through hole is arranged on the sliding part, and a gap is reserved between the rotating mechanism and the through hole; the pipe fixing device comprises a connecting rod, a connecting rod and a fixing block, the connecting rod is hinged to the rotating mechanism, the connecting rod is connected to the connecting rod, the fixing block is connected to the connecting rod, hoisting rings are respectively arranged on two sides of the connecting rod and two sides of the fixing block, and hoisting belts for fixing the pipe are arranged on the hoisting rings;

one end of the blanking locking device is connected with the blanking bin, and the other end of the blanking locking device is arranged towards the direction close to the pipe body fixing device;

two ends of the rack are respectively provided with a movable supporting leg, and the movable supporting legs are provided with telescopic hydraulic cylinders;

the ship body blanking mechanism comprises a base, a travelling mechanism, two lifting winches, blanking hoppers, a ship body blanking pipe and a pipe placement frame, wherein the travelling mechanism is arranged at the bottom of the base and is in sliding connection with a travelling guide rail, the blanking hoppers are connected with one side of the base, the two lifting winches are arranged and are respectively arranged at two sides of the blanking hoppers, the lower ends of the blanking hoppers are detachably connected with one end of the ship body blanking pipe, more than two groups of symmetrically arranged connecting pieces are respectively arranged at the connecting parts of the ship body blanking pipe and the blanking hoppers, and the ship body blanking pipe and the blanking hoppers are respectively detachably connected through bolts on the connecting pieces; a lifting lug is arranged at one end of the hull blanking pipe far away from the blanking hopper, and a steel wire rope on the hoisting winch is connected with the lifting lug; the material pipe placing frames are rotatably connected to the side, close to the ship body blanking mechanism, of the ship body, and more than two material pipe placing frames are arranged;

the method for laying the submarine pipeline comprises the following steps:

1) a lifting winch on one side of the blanking hopper loosens the steel wire rope, and a lifting winch on the other side of the blanking hopper retracts the steel wire rope, so that the hull blanking pipe rotates around the connecting piece provided with the bolt, and one end of the hull blanking pipe rotates underwater;

2) the pipe body is fixed through a hoisting belt on the pipe body connecting device; hoisting the equipment body by a hoisting mechanism on the ship body, putting the equipment body under water and moving the equipment body to a preset foundation trench; adjusting the position of a discharging bin on the equipment body;

3) feeding materials to a lower hopper, feeding the materials to a lower silo through a ship body feeding pipe, feeding the materials to the lower silo through a feeding locking device, and feeding the materials on a foundation trench for the first time;

4) the blanking sliding device drives the blanking bin to slide towards the other end of the rack, and meanwhile, the hull blanking mechanism moves synchronously, so that the blanking locking device can slide and carry out blanking at the same time;

5) the equipment body is lifted upwards, the telescopic hydraulic cylinder is driven to contract, the movable supporting legs are retracted, and the equipment body is supported above the base groove for the first blanking through the movable supporting legs;

6) adjusting the position and the angle of the pipe body through a pipe body adjusting device according to the position of the base groove for the first blanking;

7) unfastening the hoisting belt, and placing the pipe body in a first blanking base groove;

8) the blanking bin carries out blanking again through the blanking pipe, and the blanking locking device carries out secondary blanking on two sides of the pipe body;

2. A method of laying a subsea pipeline according to claim 1, characterized by: the blanking locking device comprises a blanking pipe and a high-pressure water gun, wherein a pipe orifice at one end of the blanking pipe is hinged with the blanking bin, a pipe orifice at the other end is arranged in a direction close to the pipe body fixing device, and the high-pressure water gun is arranged on one side of the pipe orifice of the blanking pipe.

3. A method of laying a subsea pipeline according to claim 1, characterized by: the fixed block lower extreme is equipped with elastic buffer, and elastic buffer is in the arc that is close to one side of body for matcing with the body.

4. A method of laying a subsea pipeline according to claim 1, characterized by: the guide rail is arranged at the top of the frame and is a T-shaped guide rail; the blanking sliding device comprises a blanking sliding frame and a blanking wheel set, the blanking bin is fixed on the blanking sliding frame, and the blanking wheel set is arranged on two sides of the blanking sliding frame and is in sliding connection with the guide rail;

5. A method of laying a subsea pipeline according to claim 2, characterized by: a swing adjusting hydraulic cylinder is hinged to the blanking bin, and a piston rod of the swing adjusting hydraulic cylinder is hinged to the blanking tube.

6. A method of laying a subsea pipeline according to claim 1, characterized by: one side of the material pipe placement frame is provided with a rotating mechanism, the rotating mechanism comprises a rotating piece and a rotating shaft pin, and the rotating shaft pin penetrates through and is connected with the rotating piece in a rotating mode; the upper end and the lower end of one side of the material pipe placing frame are respectively provided with a rotating hole, one end of the rotating mechanism is fixedly connected with the ship body, and the rotating holes of the material pipe placing frame are respectively and fixedly connected with the two ends of the rotating shaft pin.

7. A method of laying a subsea pipeline according to claim 1, characterized by: coupling mechanisms are arranged between the hoisting belts on each side of the connecting rod respectively and comprise coupling rods and universal couplings, the universal couplings are connected through the coupling rods, and two ends of each coupling mechanism are connected with the hoisting belts on one side of the connecting rod respectively.

8. A method of laying a subsea pipeline according to claim 1, characterized by: four groups of symmetrically arranged connecting pieces are arranged at the joint of the hull blanking pipe and the blanking hopper; the two lifting winches are arranged and are respectively arranged at two sides of the blanking hopper; one end of the lifting winch, which is close to the hull blanking pipe, is also provided with a guide wheel; the hull blanking pipe is a multi-section telescopic pipe body, and the telescopic pipe bodies are connected with the outer wall of another telescopic pipe body sequentially through the inner wall of the telescopic pipe body.

9. A method of laying a subsea pipeline according to claim 1, characterized by: the hoisting mechanism comprises a hoisting walking device and a hoisting device arranged on the hoisting walking device; the hoisting device is provided with more than one hoisting device.

10. A method of laying a subsea pipeline according to claim 1, characterized by: the rotating mechanism comprises a bearing seat, a bearing end cover and a rotating shaft; the bearing block is arranged on the sliding part, the bearing is arranged in the bearing block, the bearing end cover is arranged on the bearing block, the rotating shaft is arranged on the bearing and penetrates through the bearing block and the through hole, a gap is arranged between the through hole and the rotating shaft, and the gap is larger than the moving space of the rotating shaft.