CN111670852A

CN111670852A - Net cage floating body system and purse net type net cage

Info

Publication number: CN111670852A
Application number: CN202010697244.5A
Authority: CN
Inventors: 周俊麟; 林国珍; 扈喆
Original assignee: Jimei University
Current assignee: Jimei University
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2020-09-18

Abstract

The invention discloses a net cage floating body system, which comprises a plurality of floating bodies and a connecting plate erected between two adjacent floating bodies, wherein the floating bodies are connected with the connecting plate to form an annular structure, two ends of the connecting plate are respectively provided with a hole and a vertical shaft which are sleeved with the floating bodies, the hole and the vertical shaft are used for ensuring that the connecting plate is hinged with the floating bodies, the impact force of wind waves on the net cage floating body system can be buffered by the relative motion of the hole and the vertical shaft, the net cage floating body system is prevented from being broken easily due to overlarge rigidity, the connecting plate can rotate around the floating bodies in the horizontal direction, the relative motion between the floating bodies and the connecting plate in the vertical direction is further limited, and.

Description

Net cage floating body system and purse net type net cage

Technical Field

The invention relates to the technical field of aquatic product culture and ocean engineering, in particular to a net cage floating body system and a purse net type net cage.

Background

The net cages in the prior art are mostly small-sized net cages for saving cost, are mostly made of plastics, foams, wood and the like, and have poor resistance to the large sea storms. The open sea has periodic fluctuation tide phenomenon and certain self-cleaning capacity, and still has certain utilization value as a transition form for cultivation to the open sea, so that a cultivation tool in shallow sea is derived, most commonly, a fence type net cage is created among people.

For example, in the patent with the patent number of '201510370218.0', namely 'wind and wave resistant soft and hard deep sea net cage', the periphery of the net cage is surrounded by the soft protection rings, six floating buckets are uniformly distributed on the soft protection rings, the stress of the net cage is buffered and relieved by the traction force of the soft protection rings, and further the direct impact force of wind and waves on the net cage is resisted, but the whole non-detachable structure of the soft protection rings is large, so that the processing and the installation are time-consuming and labor-consuming, and the structure of the soft protection rings is light and easy to damage.

Disclosure of Invention

The invention aims to solve the technical problems and provides a net cage floating body system and a purse net, wherein a piling and supporting system is not needed, and the whole net cage floating body system is assembled to ensure that the construction is very convenient and fast, is suitable for continental-shelf seas with various water depths and water bottom conditions, and effectively improves the safety and the stability of the whole net cage under the storm condition.

In order to achieve the purpose, the invention provides the following scheme: the invention provides a net cage floating body system which comprises a plurality of floating bodies and a connecting plate erected between two adjacent floating bodies, wherein the floating bodies are connected with the connecting plate to form an annular structure, two ends of the connecting plate are respectively provided with a hole and a vertical shaft which are sleeved with each other between the floating bodies, and the hole and the vertical shaft are used for ensuring that the connecting plate is hinged with the floating bodies and ensuring that the connecting plate can rotate around the floating bodies in the horizontal direction.

Preferably, the floating body comprises a fixing bracket fixed on the side walls at two ends of the floating body, and the fixing bracket is provided with the hole or the vertical shaft correspondingly connected with the connecting plate.

Preferably, a flexible connecting device is arranged between the floating body and the connecting plate and used for buffering impact force generated between the floating body and the connecting plate.

Preferably, cable piles are respectively arranged at two ends of the floating body, a cable is fixed on each cable pile, and each cable is respectively used for connecting the floating body and the connecting plate adjacent to the floating body.

Preferably, the floating body and the connecting plate are both of a trapezoidal structure with the outer side length larger than the inner side length, and the trapezoidal structure is used for ensuring that the distance between the adjacent edges of the floating body and the connecting plate is uniform.

Preferably, the upper end of the floating body and the connecting plate are higher than the highest water level, the upper end of the floating body is used for personnel activities and material storage, and the connecting plate is used for personnel passing.

Preferably, the purse net type net cage further comprises a suspension type purse net system and an anchor system, wherein the suspension type purse net system comprises a closed net and a detachable mechanism arranged on the annular structure and used for fixing the net, and the anchor system is used for fixing the floating body system of the net cage and the suspension type purse net system in water.

Preferably, the netting comprises side netting arranged around each annular structure and top netting detachably connected with the side netting, the side netting comprises an upper end opening and a lower end opening, the top netting is used for closing the upper end opening, and the top netting is provided with a floater for enabling the top netting to float on the water surface.

Preferably, the netting comprises a bottom netting for closing the lower end opening, or a plurality of weights are uniformly fixed at the bottom end of the side netting, and the weights drive the bottom end to sink to the bottom for closing the lower end opening.

Preferably, the anchor system comprises anchors and anchor chains or anchor lines arranged between the anchors and the ring structure, the anchors being arranged evenly around the ring structure or in the wind direction.

Compared with the prior art, the invention has the following technical effects:

1. the both ends of connecting plate form articulated through the hole and the vertical axle that cup joint mutually between respectively and the body, and the connecting plate can rotate along the horizontal direction around the body, and relative motion between them can cushion the impact force of stormy waves to box with a net body floating body system, avoids box with a net floating body system rigidity too big easy fracture to take place.

2. The hole that cup joints mutually and vertical axle restriction connecting plate only rotate along the horizontal direction around the body, and then restrict and follow the ascending relative motion in vertical direction between body and the connecting plate, have improved the stability of being connected between body and the connecting plate.

3. Connect through the cable between adjacent body and the connecting plate, not only can fully restrict the horizontal turned angle between body and the connecting plate, avoid the space in the great influence netting of whole cyclic annular structure deformation, can restrict relative motion's range from top to bottom between adjacent body and the connecting plate moreover, avoid vertical axle damage and hole and vertical axle to break away from.

4. The floating body and the connecting plate are both of a trapezoidal structure with the outer side length larger than the inner side length, and the uniform distance between the edges of the adjacent floating body and the connecting plate can be ensured, so that the pressure intensity when the adjacent floating body and the connecting plate are extruded mutually is reduced.

5. The net cage floating system and the suspension type purse seine system are fixed at the position in water through the anchor system, and piling and supporting systems are not needed, so that construction is very convenient and fast.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic top plan view of a seine-type net cage;

FIG. 2 is a top view and a side view of the floating body integrally connected with the connecting plate;

FIG. 3 is a top view of the connection point of the float and the web;

FIG. 4 is a side view of the connection point of the float and the web;

FIG. 5 is a schematic view of the connection of the float to the netting;

wherein, 1-anchor, 2-anchor chain, 3-floating body, 4-connecting plate, 5-flexible connecting device, 6-vertical shaft, 7-bollard, 8-netting, 9-cable, 10-fastening device and 11-fixing bracket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a net cage floating body system and a purse net type net cage, which do not need a piling and supporting system, are assembled to form the whole net cage floating body system, enable construction to be very convenient and fast, are suitable for continental-shelf seas with various water depths and water bottom conditions, and effectively improve the safety and the stability of the whole net cage under stormy waves.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

The embodiment provides a net cage floating body 3 system, which comprises a plurality of floating bodies 3 and a connecting plate 4 erected between two adjacent floating bodies 3, wherein the floating bodies 3 and the connecting plate 4 are connected to form an annular structure. The floating body 3 supports the weight of the floating body 3 and the netting 8 through the buoyancy of the floating body, the floating body 3 can be in any shape according to the sea area, the shape is usually round, rectangular or ship-shaped, the upper end of the floating body is higher than the highest water level, and the floating body is used for providing places for personnel activities and material storage of a fishery base. The connecting plate 4 is also higher than the highest water level for personnel to pass through, preferably, the connecting plate 4 is a steel frame structure, for example, the connecting plate is made of steel or steel wire mesh cement or steel wire mesh concrete, for simplification, the planar shape of the connecting plate 4 is generally designed to be trapezoid or rectangle, a non-skid wood plate, plastic or a flower steel plate are laid on the connecting plate for people to walk, and pedestrian railings are arranged on the edges of the connecting plates 4 on the two sides. Furthermore, in order to ensure the convenient assembly between the floating body 3 and the connecting plate 4, a hole and a vertical shaft are respectively arranged between the two ends of the connecting plate 4 and the floating body 3, for example, the vertical shaft 6 is respectively arranged at the two ends of the floating body 3, a hole with a vertical axis is respectively arranged at the two ends of the connecting plate 4, preferably, a fastening device 10 is arranged, for example, a bolt and other structures are arranged, after the hole is sleeved on the vertical shaft 6, the hole is fixed on the vertical shaft 6 through the fastening device 10, further preferably, fixing brackets 11 are arranged on the side walls at the two ends of the floating body 3, the vertical shaft 6 is arranged at the upper end of the fixing bracket 11, the connecting plate 4 is sleeved on the vertical shaft through the hole, so that the connecting plate 4 is hinged with the floating body 3, and the whole connecting plate is overlapped and erected on the fixing brackets 11 of the two adjacent floating bodies 3, that is the weight is supported by the floating, the impact force of wind waves to the net cage floating body 3 system can be buffered, and the stability of connection between the floating body 3 and the connecting plate 4 is improved.

In order to reduce the impact force generated between the floating body 3 and the connecting plate 4, a flexible connecting device 5 is arranged between the floating body 3 and the connecting plate 4, such as a rubber ball or a used tire holder which is a common anti-collision device and can be purchased in the market, the flexible connecting device 5 is used between the floating body 3 and the connecting plate 4 to ensure the smoothness and the safety of a marine pedestrian passageway, and preferably, a base and a connecting chain which can fix the flexible connecting device 5 are respectively arranged at two ends of the floating body 3 and the connecting plate 4 to ensure the stable connection between the floating body 3 and the connecting plate 4 and the flexible connecting device 5.

In order to avoid the influence of wind and wave on the whole annular structure, the deformation is large, and further the space in the netting 8 is influenced, a cable 9 is further connected between the adjacent floating body 3 and the connecting plate 4, and further the horizontal rotation angle between the floating body 3 and the connecting plate 4 can be fully limited, preferably, cable piles 7 are respectively arranged at two ends of the floating body 3, a cable 9 is fixed on each cable pile 7, the cable 9 is directly fixed on the body of the connecting plate 4, or cable piles 7 are respectively arranged at two ends of the connecting plate 4, two ends of the cable 9 are respectively fixed on the cable piles 7 of the adjacent floating body 3 and the connecting plate 4, the floating body 3 and the connecting plate 4 are connected through the cable 9, the amplitude of vertical relative motion between the adjacent floating body 3 and the connecting plate 4 can be limited, and the vertical shaft 6 is prevented from.

Furthermore, in order to reduce the pressure when the adjacent floating bodies 3 and the connecting plates 4 are mutually squeezed, the floating bodies 3 and the connecting plates 4 are both of a trapezoidal structure with the outer side length larger than the inner side length, and the trapezoidal structure is used for ensuring that the distance between the edges of the adjacent floating bodies 3 and the connecting plates 4 is uniform, so after the flexible connecting device 5 is arranged between the floating bodies 3 and the connecting plates 4, the flexible connecting device 5 cannot be too large because of the pressure of a certain part between the floating bodies 3 or the connecting plates 4, for example, when the floating bodies 3 and the connecting plates 4 are both of a rectangular structure, the floating bodies 3 and the connecting plates 4 form a ring structure, the position with the minimum distance between the floating bodies and the connecting plates is the position corresponding to two sharp corners, so after the floating bodies 3 and the connecting plates 4 are impacted by wind waves, the two sharp corners simultaneously act on the flexible connecting devices 5, and the flexible connecting devices 5 are easily damaged by the impact of the two sharp corners in, it is precisely in order to avoid the above-mentioned situation and to provide a uniform edge correspondence between the two, thus extending the service life of the flexible connection means 5.

As a preferred embodiment of the present invention, the size of the net cage float 3 system provided in the above embodiment is further limited, the net cage float 3 system is configured as a circular sleeve with a diameter of 100m, and is composed of sixteen groups of floats 3, flexible connection devices 5 and connection plates 4, the buoyancy tank, i.e., barge, the deck plane is trapezoidal, the outer side length is 9.676m, the inner side length is 9.204m, the ship width is 2.5m, the profile depth is 1.6m, the draught is 1.1m, and railings with a height of 1.1m are arranged on both sides of the deck. In a preferred embodiment of the invention, the connecting plate 4 of the net cage floating body 3 system is trapezoidal in plane, the outer edge length is 9.630m, the inner edge length is 9.250m, the ship width is 2.0m, the specification of the channel steel 25b (250 x 80 x 9,31.335kg/m) for manufacturing the connecting plate 4 is made, and preferably, anti-skid plastic plates are laid on the connecting plate 4, and the two sides of the connecting plate are provided with 1.1m high railings.

The embodiment also provides a purse net type net cage, which comprises the net cage floating body system, the suspension type purse net system and the anchor system, wherein the suspension type purse net system comprises a net coat 8 in a closed shape and a detachable mechanism which is arranged on the annular structure and used for fixing the net coat 8, preferably, the upper end of the net coat 8 is tied by a steel wire rope, the steel wire rope is hung on a hook positioned on the floating body 3 or the connecting plate 4, and the steel wire rope of the net coat 8 is tied with the hook by a short rope so as to prevent falling. The anchor system is used for fixing the positions of the net cage floating system and the suspension type purse seine system in water, and piling and supporting systems are not needed, so that the construction is very convenient and fast.

Wherein, the netting 8 includes surrounding the side netting that sets up on each loop configuration and can dismantle the top netting of being connected with the side netting, the side netting includes upper end opening and lower extreme opening, the top netting can set up and be used for sealing the upper end opening on the surface of water in the loop configuration, it is preferred, the top netting still passes through the rope and connects on the box with a net body, when there is not typhoon or the stormy waves is less, the staff can dismantle the top netting from the side netting to accomodate and put in body 3, when the stormy waves is great, the top netting is installed on the side netting, and can cover the surface of water in the loop configuration, in order to prevent that fish from escaping the box with a net body outside, arouse unnecessary loss. Meanwhile, the top net is provided with a floater for floating the top net on the water surface.

Further, the netting 8 is including being used for closing the end netting of lower extreme open-ended, perhaps evenly is fixed with a plurality of heavy object in the bottom of side netting, and the heavy object drives the bottom and sinks to the bottom for close the lower extreme opening, when in the sea area that the depth of water is shallower, can sink to the contact seabed through the bottom of heavy object side netting, and the end netting can not set up in this kind of condition, avoids having the gap between netting 8 and the bottom, if the depth of water is deeper, then must set up end netting, will incline the end opening of netting and seal.

Meanwhile, the anchor system comprises an anchor 1 and an anchor chain 2 or an anchor cable arranged between the anchor 1 and the annular structure, theoretical calculation or model test determination is carried out on the anchor system according to the ocean wave of the maximum wind level of the sea area where the annular structure is located, preferably, the anchor chain 2 is selected as the connection between the anchor 1 and the annular structure, and after the stress of the annular structure in a certain sea area is determined, the anchor chain 2 is generally selected according to the catenary theory. Preferably, the arrangement of the anchor systems can be generally divided into two cases, one is arranged according to the wind direction, namely the direction with the maximum probability of the wind direction according to the maximum wind level of the sea area where the ring-shaped structure is located is set as the arrangement direction of the main anchor system, and the other is uniformly arranged around the ring-shaped structure, namely the wind direction without considering the maximum wind level. Preferably, after the arrangement of the net cage and the stress of the anchor chain 2 are determined, a conventional anchor or a high holding power anchor, such as an anchor disclosed in patent No. ZL201720440879.0 entitled "a gravity type ocean anemometer tower", can be selected according to the vessel specifications.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.

Claims

1. A net cage floating body system is characterized by comprising a plurality of floating bodies and a connecting plate erected between two adjacent floating bodies, wherein the floating bodies are connected with the connecting plate to form an annular structure, two ends of the connecting plate are respectively provided with a hole and a vertical shaft which are sleeved with each other between the floating bodies, and the hole and the vertical shaft are used for ensuring that the connecting plate is hinged with the floating bodies and ensuring that the connecting plate can rotate around the floating bodies in the horizontal direction.

2. The net cage floating body system according to claim 1, comprising fixing brackets fixed on the side walls of both ends of the floating body, wherein the fixing brackets are provided with the holes or the vertical shafts correspondingly connected with the connecting plates.

3. The net cage float system of claim 2, wherein a flexible connection means is provided between the float and the connection plate for buffering the impact force generated between the float and the connection plate.

4. The net cage float system according to claim 1 or 3, wherein cable piles are respectively provided at both ends of the float, a cable is fixed to each cable pile, and each cable is respectively used for connecting the float and the connecting plate adjacent to the float.

5. The net cage float system of claim 4, wherein the floats and the connecting plates are both trapezoidal structures having an outer side length greater than an inner side length for ensuring uniform spacing between the edges of adjacent floats and connecting plates.

6. The net cage float system of claim 1, wherein the upper end of the float and the connection plate are above a maximum water level, the upper end of the float is used for personnel activities and material storage, and the connection plate is used for personnel passage.

7. A purse net with a net cage float system according to any one of claims 1 to 6, further comprising a suspended purse net system and an anchor system, wherein the suspended purse net system comprises a net cloth in a closed shape and a detachable mechanism arranged on the ring structure and used for fixing the net cloth, and the anchor system is used for fixing the positions of the net cage float system and the suspended purse net system in water.

8. A seine cage according to claim 7, wherein said netting comprises side netting arranged around each of said loops and a top netting detachably connected to said side netting, said side netting comprising an upper end opening and a lower end opening, said top netting for closing said upper end opening and said top netting being provided with a float for floating said top netting on the water.

9. The seine cage of claim 8, wherein the netting comprises a bottom netting for closing the lower end opening, or a plurality of weights are uniformly fixed to the bottom ends of the side netting, and the weights drive the bottom ends to sink to the bottom for closing the lower end opening.

10. The seine cage of claim 7, wherein the anchor handling system comprises anchors and anchor chains or cables disposed between the anchors and the ring structure, the anchors being disposed evenly around the ring structure or arranged in the direction of the wind.