CN109644916B

CN109644916B - Closing method of deep water net cage

Info

Publication number: CN109644916B
Application number: CN201910032430.4A
Authority: CN
Inventors: 杨怀山; 王文举; 尹岩太; 邢俊建; 曹学军; 赵志成; 张德娟
Original assignee: China International Marine Containers Group Co Ltd; Yantai CIMC Raffles Offshore Co Ltd; Longkou CIMC Raffles Offshore Co Ltd
Current assignee: China International Marine Containers Group Co Ltd; Yantai CIMC Raffles Offshore Co Ltd; Longkou CIMC Raffles Offshore Co Ltd
Priority date: 2019-01-14
Filing date: 2019-01-14
Publication date: 2021-09-10
Anticipated expiration: 2039-01-14
Also published as: CN109644916A

Abstract

The invention provides a method for closing a deepwater net cage. A closure method of a deepwater net cage comprises the following steps: the pulley can be arranged on the slideway in a sliding way; positioning of the caisson: positioning the caisson on a sled; installing a main pipe: respectively inserting the main pipes into the caisson and welding the main pipes; and (3) secondary sheet installation: sequentially hoisting and installing the secondary sheets on the main pipe and welding the secondary sheets; lengthening the main pipe: installing and welding the rest part of the main pipe; mounting the top ring: and installing the top ring on the lengthened main pipe. The closing method of the deepwater net cage is convenient to operate and realize.

Description

Closing method of deep water net cage

Technical Field

The invention relates to ocean engineering, in particular to a method for folding a deepwater net cage.

Background

Since the 80 s in the 20 th century, fishery resources are seriously declined due to the problems of over-fishing, environmental pollution and the like worldwide. Therefore, the fishery industry is changed from the traditional hunting type fishing industry to the increasing and breeding fishery with the pasture mode, the novel pasture mode which is ecological, intelligent and efficient represents the future fishery development trend, the method is an important way for constructing the blue granary, and meanwhile, the tourism industry chain is extended to develop the maritime leisure fishing by depending on the breeding platform and the breeding net cage.

The deepwater net cage is used as an industry and is used for relieving the decline of current marine fishery resources. The negative effects such as loss and the like caused by the demarcation of a fishing ground in a 200-sea exclusive economic area are reduced; has positive effects and important significance for the conversion of the fishing fishermen and the increase of the income of the breeding fishermen. Compared with the traditional small net cage, the deep water net cage has larger volume.

When the deepwater net cage is launched into water, the distance between the track of the gantry crane and the launching bank is limited by plant layout and site hoisting capacity; and because the net cage has large integral weight, the net cage can not be integrally hoisted and moved like hoisting common ship body sections, and the closure launching of the deep water net cage with larger volume can not be realized.

Disclosure of Invention

The invention aims to provide a method for closing a deepwater net cage, which is convenient to realize.

A closing method of a deepwater net cage comprises the following steps:

arranging a launching slideway: the pulley can be arranged on the slideway in a sliding way;

positioning of the caisson: positioning the caisson on a sled;

installing a main pipe: respectively inserting the main pipes into the caisson and welding the main pipes;

and (3) secondary sheet installation: sequentially hoisting and installing the secondary sheets on the main pipe and welding the secondary sheets;

lengthening the main pipe: installing and welding the rest part of the main pipe;

mounting the top ring: and installing the top ring on the lengthened main pipe.

In one embodiment, the step of arranging the waterslide further comprises providing a support structure on the sled, the support structure being fixedly connected to the sled.

In one embodiment, the step of arranging the waterslide further comprises arranging sleepers on the support structure, and adjusting the sleepers to enable the caissons to be located on the same plane.

In one embodiment, the positioning of the caisson further includes disposing a diagonal brace between the caisson and the support structure, and two ends of the diagonal brace are respectively fixedly connected to the caisson and the support structure.

In one embodiment, the method further comprises a launching step, wherein a winch pulls the pulley, and the pulley slides along the launching slideway to enable the deep water net cage to slide and launch onto the barge.

In one embodiment, the launching step further includes that lifting lugs are arranged on two sides of the supporting structure, and the winch is connected with the trolley through the lifting lugs.

In one embodiment, the step of installing the top ring further comprises installing a netting.

In one embodiment, the method further comprises the following steps: and fixedly arranging a support column between the secondary sheet on the pulley and the pulley so as to support the secondary sheet.

In one embodiment, the step of installing the supporting columns further includes fixedly arranging the supporting columns at the front, middle and rear portions of the secondary sheet, respectively.

In one embodiment, the method further comprises the following steps of: and installing the living platform and the working platform on the top ring in a hoisting manner.

According to the closing method of the deepwater net cage, the caisson can smoothly slide and move along the slide way through the pulley. And the caisson slides to drive the whole deepwater net cage to slide. The slideway extends from a construction plant area of the deep water net cage to a position of the side of a launching bank, so that the integral deep water net cage is prevented from being hoisted by using a gantry crane, the operation is convenient, and the closure of the deep water net cage is convenient to realize.

Drawings

Fig. 1 is a schematic structural view of a deepwater net cage of the present embodiment;

fig. 2 is a flowchart of a closing method of the deepwater net cage of the embodiment;

FIG. 3 is a detailed flowchart of step S11 according to the folding method shown in FIG. 2;

FIG. 4 is a schematic diagram of steps S11, S12 according to the folding method shown in FIG. 2;

FIG. 5 is a schematic diagram of a chute arrangement according to the folding method shown in FIG. 2;

FIG. 6 is a diagram illustrating step S13 of the folding method shown in FIG. 2;

FIG. 7 is a diagram illustrating step S14 of the folding method shown in FIG. 2;

FIG. 8 is a diagram illustrating step S15 according to the folding method shown in FIG. 2;

FIG. 9 is a diagram illustrating step S16 of the folding method shown in FIG. 2;

FIG. 10 is a flow chart illustrating additional steps of a folding method according to another embodiment;

FIG. 11 is a diagram illustrating step S17 of the folding method shown in FIG. 10;

FIG. 12 is a diagram illustrating step S18 of the folding method shown in FIG. 10;

fig. 13 is a partial enlarged view of a portion a according to fig. 12.

The reference numerals are explained below: 11. a box body; 110. caisson; 111. a main pipe; 112. secondary slice; 1120. a bottom frame; 1121. a first diagonal brace; 1122. a second diagonal brace; 113. a top ring; 1130. a top frame; 1131. an upper chord; 1132. a lower chord; 1133. a web member; 131. a life platform; 132. a working platform; 21. a slideway; 22. a pulley; 23. a support structure; 24. crossties; 241. putting a sleeper; 242. laying a sleeper; 243. lifting lugs; 25. a connecting rod; 26. and (4) a support column.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below in the specification. It is to be understood that the invention is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the invention and the description and drawings are to be regarded as illustrative in nature and not as restrictive.

The present disclosure provides a method for closing a deepwater net cage. The deep water net cage is used for fishery culture. In particular to a deep-water net cage which is a large-sized deep-sea aquaculture net cage. The deepwater net cage disclosed by the invention comprises a box body 11, a net and an operating platform 13. The netting is connected with the box body 11. The netting may be wrapped inside the case 11. The netting encloses the housing 11 to form a growing area for growing.

The housing 11 is a frame support structure. The box body 11 is a metal frame and has high strength, so that the net cage can bear certain wind and wave impact. The box 11 may be of steel construction or the like.

The box body 11 includes a caisson 110 disposed at a bottom corner, a main tube 111 vertically disposed on the caisson 110, a secondary fin 112 connected between two adjacent main tubes 111, and a top ring 113 connected to the top of the main tube 111.

Caisson 110 is configured to sit on the seabed and support the entire deepwater cage. Caisson 110 has a higher strength and a stronger load-bearing capacity.

The main pipe 111 is a steel pipe. The main tube 111 can be four, six, eight, etc. The plurality of main pipes 111 are annularly distributed. In this embodiment, the box 11 is rectangular and includes four caissons 110 and four main pipes 111. The folding method provided by the present disclosure does not limit the shape of the box body 11. The case 11 may be a cylindrical case, a square case, a polygonal case, or the like.

The main tube 111 is divided into a plurality of segments, and each segment is connected by welding. The main pipe 111 is preferably a hollow steel pipe with a circular cross section, and may be a hollow steel pipe with a square cross section as needed.

The sub-sheets 112 are isosceles triangles. The sub-sheet 112 includes a bottom frame 1120 located at the bottom side of the isosceles triangle, and first inclined struts 1121 located at the two waist positions of the isosceles triangle. The sub-sheet 112 further includes a second brace 1122 between the bottom frame and the first brace 1121.

In other embodiments, the sub-sheet 112 may be provided with other deformation structures such as a bracing structure to enhance the strength of the sub-sheet 112, which is not limited herein.

The sub-plate 112 is fixedly connected to the caisson 110 by fixing both ends of the bottom frame 1120, respectively.

The top ring 113 includes a plurality of top frames 1130. The top frames 1130 are connected to each other through the main pipe 111 and are spliced to form a ring structure, i.e., the top ring 113. The two ends of the top frame 1130 are welded to the two ends of the main tube 111, respectively.

The top frame is a truss structure. Each top frame includes an upper chord 1131, a lower chord 1132 and a web member 1133, and the web member 1133 is obliquely supported between the upper chord 1131 and the lower chord 1132. Web members 1133 reinforce the strength between upper chord 1131 and lower chord 1132, thereby reinforcing the strength of upper support structure 113 and enabling it to bear a weight better. The upper chord 1131, the lower chord 1132 and the web member 1133 can be round section steel pipes or square section steel pipes as required.

The top ring 113 is also used for mooring a ship such as a supply ship or a fish collection ship. Specifically, the dimensions, thicknesses, spacings, etc. of upper chord 1131, lower chord 1132 and web members 1133 are determined to meet, first, strength requirements and, second, length requirements of the moored vessel. Bollards or eye plates for mooring are provided on the web members 1133 of the upper support structure 113. The number and position of the bollards or eye plates need to be determined according to the type, length and size of the mooring ships.

The operation platform 13 is provided on the top ring 113. The operation platform 13 may include a living platform 131 and a working platform 132. The living platform 131 and the working platform 132 are diagonally disposed on the top ring 113.

Life building is arranged on the life platform 131, and the life building can be a single-layer or multi-layer structure with various styles. The living building is in a two-layer villa structure form. The living building is provided with a rest room, a kitchen, a toilet and the like. Therefore, the living building can realize the functions of rest, cooking and washing.

The working platform 132 is provided with a central control room, an equipment room, a storage room, a bait tank, automatic feeding equipment and the like. Therefore, the deep water net cage can realize the functions of automatic net lifting, automatic bait casting, underwater intelligent monitoring, underwater automatic net washing and the like.

According to the structure of the deepwater net cage, a closing method of the deepwater net cage is explained. Referring to fig. 2, a method for closing a deep water net cage includes:

step S11, arranging a launching chute: the pulley can be arranged on the slideway in a sliding way.

Step S12, positioning of caisson: the caisson is positioned on the trolley.

Step S13, installation of master pipe: and respectively inserting the main pipes into the caisson and welding the main pipes.

Step S14, secondary sheet mounting: and sequentially hoisting and installing the secondary sheets on the main pipe and welding and connecting the secondary sheets.

Step S15, extension of the main pipe: the remaining part of the main pipe is installed and welded.

Step S16, top ring installation: and installing the top ring on the lengthened main pipe.

Referring to fig. 3, in this embodiment, in step S11, the step of arranging a launching chute, and the step of slidably arranging the pulley on the chute further includes: and S111, arranging a supporting structure on the pulley, wherein the supporting structure is fixedly connected with the pulley.

Referring to fig. 4 and 5, for convenience of description, the extending direction of the slide way 21 is the moving direction of the deep water net cage, and the two sides of the deep water net cage are port and starboard. I.e. the port and starboard caissons 110 of the deepwater net are positioned on the trolley 22.

The support structure 23 is a steel box arranged on the trolley 22 in the extension direction of the slide 21. The interior of the support structure 22 is filled with cement to enhance the strength of the support structure.

The support structure 23 is fixedly arranged on the trolley 22 by welding.

Step S11, the step of arranging the waterslide further includes step S112, providing sleepers 24 on the support structure 23, and adjusting the sleepers 24 to position the caissons 110 on the same plane.

There are at least two crossties 24. Each crosstie 24 has a right-angled trapezoidal cross-section. In this embodiment, the crossties include an upper crosstie and a lower crosstie. The upper sleeper 241 and the lower sleeper 242 are arranged oppositely, the right-angle edge of the upper sleeper 241 is used for supporting the caisson, and the right-angle edge of the lower sleeper 242 is used for abutting against the supporting structure. The upper crosstie 241 and the lower crosstie 242 are connected by an inclined surface, so that the overall height of the crosstie 24 can be adjusted when the position between the upper crosstie 241 and the lower crosstie 242 is adjusted left and right.

Therefore, the height of the caisson 110 is adjusted by adjusting the positions of the upper sleeper and the lower sleeper, and the four caissons 110 of the deep water net cage are ensured to be positioned on the same horizontal plane. And, the outer sides of the upper and

lower sleepers

241 and 242 are provided with lugs 243 to facilitate the position adjustment of the upper and

lower sleepers

241 and 242.

Specifically, in the present embodiment, step S12, positioning of caisson 110: the step of positioning the caisson 110 on the trolley further comprises: a connecting rod 25 is arranged between the caisson 110 and the support structure 23, and both ends of the connecting rod 25 are fixedly connected with the caisson and the support structure respectively. The connecting rods 25 are fixedly connected to the caissons 110 at both sides of the supporting structure 23, respectively. Connecting rod 25 realizes the fixed connection of bearing structure 23 and caisson 110 on the one hand, and on the other hand also can reach the effect of dispersed pressure, guarantees that bearing structure 23 can stably support caisson 110.

The connecting rod 25 is fixedly connected to the caisson 110 and the support structure 23, respectively, by welding.

Step S13, installation of the main pipe 111: the main pipes 111 are respectively inserted into the caissons 110 and welded to each other, as shown in fig. 6. The bottommost segment of the host tube 111 is first welded into the caisson 110. The main pipe 111 is divided into a plurality of sections, so that the installation of the higher main pipe 111 is avoided, and the height of a single section is small, so that the installation is convenient. The middle part of the caisson is provided with a groove for accommodating the main pipe 111, so that the main pipe 111 can be conveniently installed.

Referring to fig. 7, step S14, installation of the sub-sheet 112: the secondary sheets 112 are sequentially hoisted and installed on the main pipe and are welded.

The sub-sheets 112 are prefabricated. The sub-sheet 112 includes a bottom frame 1120 located at the bottom side of the isosceles triangle, and first diagonal braces 1122 located at the two sides of the isosceles triangle, and a second diagonal brace 1123 is further disposed between the bottom frame 1120 and the first diagonal braces 1122.

And (3) hoisting the secondary sheet 112, wherein two ends of the bottom frame of the secondary sheet 112 are respectively connected with the two adjacent main pipes 111, so that the secondary sheet is preliminarily fixedly connected.

Moreover, when the secondary plate 112 is installed in a hoisting mode, the plane of the secondary plate 112 is required to be perpendicular to the horizontal plane of the four caissons 110.

Referring to fig. 8, step S15, lengthening of the main pipe 111: the remaining part of the main tube 111 is installed and welded.

In step S13, the bottommost segment of the main pipe is already fixedly welded to the caisson, and then the remaining main pipe segments are sequentially welded and fixed to the bottommost segment, so that the installation of the entire main pipe is completed.

Referring to fig. 9, step S16, mounting of the top ring 113: the top ring 113 is mounted on the completed elongated main pipe 111.

The top ring 113 is previously fabricated. Specifically, a plurality of web members 1133 are welded between upper chord 1131 and lower chord 1132 to form top frame 1130. The plurality of top frames 1130 are connected to each other by the main pipe 111 to form the top ring 113. The two ends of the top frame 1130 are welded to the two ends of the main tube 111, respectively.

The step S16 of installing the top ring 113 further includes a step S161 of installing a netting. The netting is manufactured in advance, after the top ring 113 is installed, the installation position of the netting on the secondary piece is determined by hanging lead weights at the installation position of each netting of the top ring, and the upper installation position and the lower installation position of the netting are ensured to be on the same straight line.

Referring to fig. 10, the closing method of the deep water net cage according to the embodiment further includes, in step S17, installing a support column: and a support column is fixedly arranged between the secondary piece on the pulley and the pulley so as to support the secondary piece.

Referring to fig. 11, the minor piece 112 on the trolley 22 is the minor piece located on the port and starboard of the deep water net cage. A support column 26 is fixedly arranged between the bottom frame of the secondary sheets at the left and right sides and the pulley 22. Because the length of the secondary piece bottom frame is longer, the secondary piece is reinforced and supported by the support columns, so that deformation after welding is avoided, and the influence on the installation precision control of the netting tool is avoided; meanwhile, the support strength of the pulley and the deepwater net cage is ensured.

And the step of installing the supporting column 26 specifically includes fixedly arranging the supporting column 26 at the front, middle and rear portions of the secondary sheet 112, respectively. The support posts 26 may uniformly support the front, middle and rear portions of the sub-sheets, respectively. And, three support columns 26 are welded respectively at the front part, the middle part and the rear part of the secondary sheet, so that the support strength is ensured.

Referring to fig. 12 and 13, the closing method of the deep water net cage according to the embodiment further includes a step S18 of launching, in which the winch pulls the pulley, and the pulley slides along the launching chute, so that the deep water net cage slides down to the barge.

Step S18: the step of launching further comprises that lifting lugs are arranged on two sides of the supporting knot 23, and the winch is connected with the pulley through the lifting lugs.

Lifting lugs 31 are welded on two sides of the supporting structure 23, and two 30-ton winches 32 are respectively fixed on the outer sides of the port and the starboard of the deep water net cage. On the other side, a pulley block 33 is provided on the barge, and a rope is passed between the winch and the pulley block 33 through a wire rope, thereby pulling the pulley to move along the slide way.

The closing method of the deepwater net cage of the embodiment further comprises the following steps of S19, installation of the living platform and the working platform: the living platform and the working platform are installed on the top ring.

In the embodiment, the operating platform 13 is disposed at the intersection of the two top frames and the main pipe 111, so that the stress at the intersection can be uniformly dispersed, the weight of the operating platform 13 can be better borne, and the strength and stability of the overall structure of the deep water net cage can be ensured.

Referring to fig. 1, the operation platform 13 of the deep water net cage of the present embodiment includes a living platform 131 and a working platform 132. The living platform 131 is supported on the other side of the top ring. The living platform 131 and the working platform 132 are disposed opposite to each other. Specifically, the living platform 131 and the working platform 132 are respectively located at two opposite top corners of the top ring.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A closing method of a deepwater net cage is characterized in that a box body of the deepwater net cage comprises a caisson arranged at a bottom corner, a main pipe inserted on the caisson, a secondary sheet connected between two adjacent main pipes and a top ring connected to the top of the main pipe, and the method comprises the following steps:

positioning of the caisson: positioning the caisson on a sled;

mounting the top ring: and installing the top ring on the lengthened main pipe.

2. The method of closing a deepwater net cage according to claim 1, wherein the step of arranging a waterslide further comprises providing a support structure on the trolley, the support structure being fixedly connected to the trolley.

3. The method of closing deep water net cages according to claim 2, wherein the step of arranging the waterslide further comprises arranging sleepers on the support structure, and adjusting the sleepers to position the caissons on the same plane.

4. The method of closing a deepwater net cage according to claim 2, wherein the positioning of the caisson further comprises arranging a connecting rod between the caisson and the support structure, and the two ends of the connecting rod are fixedly connected with the caisson and the support structure respectively.

5. The method for closing the deepwater net cage according to claim 2, further comprising a launching step, wherein a winch pulls the trolley, and the trolley slides along the launching chute, so that the deepwater net cage slides to launch onto a barge.

6. The method for closing deep water net cages according to claim 5, wherein the launching step further comprises the step of arranging lifting lugs on both sides of the supporting structure, and the winch is connected with the trolley through the lifting lugs.

7. The method for closing a deepwater net cage according to claim 1, wherein the step of installing the top ring further comprises installing a netting.

8. The method for closing the deepwater net cage according to claim 1, further comprising the following steps of installing a supporting column: and fixedly arranging a support column between the secondary sheet on the pulley and the pulley so as to support the secondary sheet.

9. The method for closing a deepwater net cage according to claim 8, wherein the step of installing supporting columns further comprises fixedly arranging the supporting columns at the front part, the middle part and the rear part of the secondary sheet respectively.

10. The method for closing deep water net cages according to claim 1, further comprising the following steps of installing a living platform and a working platform: and installing the living platform and the working platform on the top ring in a hoisting manner.