CN111758681B - Device for detecting stress of net piece and purse seine using same - Google Patents
Device for detecting stress of net piece and purse seine using same Download PDFInfo
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- CN111758681B CN111758681B CN202010542946.6A CN202010542946A CN111758681B CN 111758681 B CN111758681 B CN 111758681B CN 202010542946 A CN202010542946 A CN 202010542946A CN 111758681 B CN111758681 B CN 111758681B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K73/00—Drawn nets
- A01K73/12—Nets held vertically in the water, e.g. seines
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- G—PHYSICS
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- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
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- G—PHYSICS
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- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y10/00—Economic sectors
- G16Y10/15—Fishing
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- G16Y40/00—IoT characterised by the purpose of the information processing
- G16Y40/10—Detection; Monitoring
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Abstract
The invention discloses a device for detecting the stress of a net piece, belonging to the technical field of ocean engineering equipment, and the device comprises first components, wherein the first components are arranged on the net piece in a horizontal straight line, and are connected through a tensioning adjusting rope; the first assembly includes: the data wire of the first pressure sensor is wound in a mesh woven rope of the mesh and is connected with a first signal transceiver, and the first signal transceiver is arranged on a buoyant element with buoyancy; the invention also discloses a purse seine with the device for detecting the stress of the net piece, and the purse seine stress monitoring device realizes the monitoring of the stress of the net under the conditions of different water qualities, reduces the risk of breaking the net, finds out the damage of the net in time, reduces the economic loss and has high escape prevention performance of the netting gear.
Description
Technical Field
The invention belongs to the technical field of ocean engineering equipment, and particularly relates to a device for detecting stress of a net piece and a purse seine using the device.
Background
The widespread use of advanced technologies and the over-utilization of marine resources by people has led to the rapid depletion of offshore marine fishery resources, and shallow sea farming has been vigorously developed in recent years. In shallow sea culture, purse net culture or deep water cage culture is commonly used, under the condition of heavy stormy waves, the purse net or the cage is difficult to resist or certain impact occurs to cause damage of netting/the cage, and the damage of the netting cannot be found in time, so that a great amount of fish escapes to cause huge loss. Therefore, the safety problem of the netting is one of the key problems to be solved in shallow sea culture. The following measures are commonly adopted for monitoring the damage of the netting abroad: 1, an underwater camera which can rotate by 360 degrees and can ascend and descend is arranged in the center of the net cage to scan the netting, but the method cannot be used in muddy water environment. 2. The underwater robot with the camera crawls along the netting to transfer the surface condition of the netting to the water surface monitoring room, and the underwater robot can be used for muddy water. However, the crawling speed of the robot is slow, and the robot and the netting may be wound to damage the netting. 3. In the sonar mode, when the netting is damaged and fish escapes, sound wave reflection images in the internal area and the external area of the net cage are obviously changed, and the defect that the damaged part cannot be determined is overcome. The common disadvantages of the above 3 methods are: the system has high energy consumption, needs personnel to monitor and has high development, operation and maintenance costs.
Disclosure of Invention
One of the purposes of the invention is to provide a device for detecting the stress of a net piece, which can monitor the stress of a net under different water quality conditions, reduce the risk of breaking the net, find out the damage of the net in time and reduce the economic loss.
The technical scheme adopted by the invention for realizing the purpose is as follows: a device for detecting mesh strain, comprising: a first component which is used for connecting the first component,
the first components are arranged on the net piece in a horizontal straight line and are connected through a tensioning adjusting rope;
the first assembly includes: the data wire of the first pressure sensor is wound in a mesh woven rope of the mesh and is connected with a first signal transceiver, and the first signal transceiver is arranged on a buoyant element with buoyancy;
the first signal receiving and transmitting device is in wireless connection with a second signal receiving and transmitting device arranged on a land base, and the second signal receiving and transmitting device is connected with an industrial personal computer. And a signal amplifier and a filter are also arranged between the second signal receiving and transmitting device and the industrial personal computer and are used for amplifying and filtering the received signals so as to improve the accuracy of the monitoring data.
According to the invention, the first component and the sensor are arranged on the net piece, so that the stress of the purse net in the vertical direction and the horizontal direction can be monitored, the multi-direction stress condition of the purse net is monitored, the deformation of the netting can be controlled by tensioning the adjusting rope in the using process, the bearing strength of the water resistance of the netting is improved, and the effective culture volume of a culture purse net area or a culture net box is kept.
According to an embodiment of the invention, the third assembly comprises two limiting plates which are respectively arranged on two sides of the mesh and clamped with the mesh, one side of each limiting plate is provided with a supporting side plate parallel to the horizontal plane, the supporting side plates of the third assemblies are positioned on the same side, the springs are respectively connected with the supporting side plates on the upper end and the lower end of each third assembly, and the supporting side plates are provided with two through holes. The third component is connected with the mesh pieces with different horizontal heights up and down, under the connection of the springs, the length of the tensioning adjusting rope can be stretched or shrunk to control the shrinkage of the springs in the deformation process of the mesh, and then the control of the distance between the two third components is realized, and the resistance to wind waves is facilitated.
According to one embodiment of the invention, the tensioning adjusting rope sequentially penetrates through the through holes on the supporting side plates of the first assemblies; the tensioning adjusting rope can control the deformation of the netting in the using process, the bearing strength of the netting by water resistance is improved, and the effective culture volume of a culture purse net area or a culture net cage is kept.
In accordance with an embodiment of the present invention,
two ends of the tensioning adjusting rope respectively penetrate through the through holes upwards from the bottom surface of the supporting side plate with low horizontal height in the first assembly and upwards penetrate through the through holes in the supporting side plate with high horizontal height along the inner ring of the spring, and two ends of the tensioning adjusting rope are respectively connected with the tensioning adjusting rope corresponding to the first assembly with the same horizontal height;
the tensioning adjusting rope head penetrates through a through hole in the supporting side plate with the high first assembly level, penetrates through a through hole in the supporting side plate with the low first assembly level downwards along the spring inner ring, penetrates through the other through hole in the supporting side plate with the high first assembly level upwards along the spring inner ring, and sequentially penetrates through the first assemblies on the same horizontal plane by repeating the operations.
Specifically, the tensioning adjusting rope is connected with each first component in a penetrating manner, when the netting is impacted by water flow, the netting generates deformation, a pressure sensor on the first component is pressed to measure the stress data of the netting, meanwhile, the tensioning adjusting rope stretches along with the deformation of the netting in the deformation process, the tensioning adjusting rope has upward pulling force to a supporting side plate below a pull spring in the stretching process to enable the supporting side plate to move upwards, the spring compresses, the length of the tensioning adjusting rope between the two first components is prolonged and stretches along with the deformation of the netting, the existence of the spring between the two supporting side plates at the upper end and the lower end limits the distance range of the two supporting side plates to control the stretched length of the tensioning adjusting rope so as to control the deformation of the netting, the distance contraction of the netting at different levels is driven to improve the wind wave resistance of the netting, certainly, the tensioning adjusting rope can be contracted under the counter-acting force of the spring, and the spring has lower thrust to the supporting side plate below, the distance between the two supporting side plates is promoted to be enlarged, the tensioning adjusting rope is contracted, the length of the tensioning adjusting rope between the two first components is reduced, and the deformation of the netting is controlled.
Because above-mentioned first subassembly includes two third subassemblies, the tensioning is adjusted rope length and is realized reducing and expanding of different level third subassembly intervals from top to bottom through tensile or shrink to the in-process of netting deformation control, and this process drives the contraction of different level's netting interval and expands, does benefit to the separation from of adnexed marine organism on the netting, has certain cleaning performance to the netting.
According to one embodiment of the invention, the limiting plate clamping fitting surfaces are respectively provided with crossed limiting grooves corresponding in position for clamping and limiting the net ropes on the net piece.
The two limiting plates are connected through the limiting assembly, an adjustable gap is formed between the two limiting plates, a second pressure sensor is arranged on the clamping matching surface of the limiting plate, and the second pressure sensor is wound in the mesh woven mesh rope of the mesh and connected with the first signal receiving and transmitting device. The adjustable gap is smaller than the overlapping thickness of the two mesh weaving ropes. The limiting plates extrude the second pressure sensor under the action of ocean current or object impact, the stress data of the mesh is acquired in the mode, and the installation control of the second pressure sensor is provided under the condition of guaranteeing clamping of the mesh by setting a proper gap between the two limiting plates.
According to an embodiment of the present invention, a plurality of arc-shaped grooves are formed on the arc surfaces of the limiting grooves, the arc-shaped grooves are formed for improving the connection effect between the limiting plate and the net rope, the limiting assembly includes a second limiting member and a first limiting member, through holes corresponding to the positions of the two limiting plates are formed, the second limiting member and the first limiting member are inserted into the through holes, a threaded hole is formed at the connection end of the second limiting member and the first limiting member, a threaded post corresponding to and connected to the threaded hole is arranged at the connection end of the first limiting member and the second limiting member, and two non-connection ends of the second limiting member and the first limiting member are provided with a limiting circular plate having a diameter larger than the inner diameter of the through hole of the limiting plate. The design of spacing subassembly can realize the dismouting of two limiting plates, realizes adjusting two limiting plate clearances through closing first locating part and second locating part soon.
According to one embodiment of the invention, the first protecting jacket is sleeved on the tensioning adjusting rope between the first components, the surface of the first protecting jacket is provided with strip-shaped grooves, the arrangement of the first protecting jacket can play a role in protecting the tensioning adjusting rope and also avoid unnecessary friction or winding between the tensioning adjusting rope and the net piece, the arrangement of the first protecting jacket can reduce the probability of attachment of organisms on the tensioning adjusting rope, the tensioning adjusting rope between the first components is preferably sleeved with a whole section of first protecting jacket, the sleeving of a plurality of sections of first protecting jackets with smaller lengths is avoided as much as possible, the probability of falling of the first protecting jacket is reduced, the deformation state of the netting is favorably limited, particularly, the netting floats in a water body, the whole section of first protecting jacket can play a role in limiting the floating deformation shape of the netting, and the damage rate of the volume of the purse net or the net box is reduced, avoid the risk that the netting deformation causes the breed scotch.
The invention also aims to provide a purse net with a device for detecting the stress of a net piece, which can realize real-time monitoring of the stress and damage of the net, effectively reduce the influence of wind on the net and improve the escape-proof function of the net.
The purse seine includes that at least two float members that lay horizontally, float member bottom surface connection net piece, and the permutation is arranged on the net piece and is set up first subassembly, connects through the second subassembly between the float member. The invention can monitor the stress of the purse net in the vertical direction and the horizontal direction by arranging the first component and the sensor on the purse net, monitor the multi-direction stress condition of the purse net, obtain the stress of the purse net under different water depths by the position of the arranged first component, facilitate data statistical analysis, adjust the arrangement of the purse net according to the sea area condition, reduce the net breaking probability and the stability of the purse net or net cage provided with the first component in water, improve the integral biological attack resistance of the purse net by arranging two floating parts to respectively connect the corresponding net sheets to form the purse net with a double-layer structure in consideration of the easy attack of other organisms in the culture process, arrange the second component between the two floating parts to realize the connection of the upper end parts of the double-layer net sheets, enable the stress of the double-layer purse net to be transmitted, avoid the overlarge stress of the single-side purse net, and be beneficial to improving the wind wave resistance and impact resistance of the integral purse net, the purse net can be used in a sea area with tidal current flow velocity of 1.5 m/s.
According to one embodiment of the invention, metal wires are woven in the weaving ropes of the mesh sheet, the surfaces of the metal wires are provided with insulating protective sleeves, one end parts of the metal wires are sealed by sealant, the other end parts of the metal wires are connected with a first signal transceiver, and the first signal transceiver is also connected with electrodes arranged in water. The seawater is used as a conductor, when the net sheet is not damaged, namely, the insulating protective sleeve on the metal wire is not broken, the circuit is not conducted, the net sheet is damaged due to too large wave impact or is damaged due to object impact, the metal wire is broken, the current is conducted through the seawater to form a loop through an electrode, and the trigger signal is used for sending a signal to the industrial personal computer controlled by the land base through the first signal receiving and sending device.
According to an embodiment of the invention, the second assembly comprises a strip-shaped third adjusting plate, two ends of the third adjusting plate are respectively connected with a fourth adjusting plate, one end of the fourth adjusting plate is connected with the third adjusting plate through a pin, and the other end of the fourth adjusting plate is fixedly connected with the floating assembly. The invention designs a double-net structure, floating pieces are arranged above the net pieces, the protection effect of the purse net or net cage culture can be effectively improved, in order to avoid a certain gap between the double net pieces, which is beneficial to protection and the stability of the net in water, the gap between the two floating pieces is reserved by arranging the third adjusting plate and the fourth adjusting plate, so that the gap between the two net pieces is in a certain set range, the buffer effect of the multilayer net pieces with intervals for water flow impact or object impact is improved, a proper space is provided for the deformation of the netting under the action of water flow, the risk of the stress increase of the netting caused by unnecessary overlapping between the two nettings is effectively prevented, and the wind wave resistance and the impact resistance effect of the integral purse net are improved by dispersing the second component to the netting of the other side when the netting of one side is stressed, therefore, the bearing strength of the purse net or the net cage for resisting the resistance of the netting to water can be realized.
In accordance with an embodiment of the present invention,
the third adjusting plate is arranged in parallel with the floating assembly, a first adjusting plate capable of sliding relative to the third adjusting plate is inserted into the third adjusting plate, the first adjusting plate and the third adjusting plate are arranged in a cross mode, floating pieces are inserted into two ends of the first adjusting plate, the floating pieces can slide relative to the first adjusting plate, and limiting plates are arranged at two ends of the first adjusting plate; two pieces that float are floated along with it under stormy waves effect or surface of water object collision, the displacement of the piece that floats drives the displacement and the deformation of aquatic netting, for reducing above-mentioned influence, the third regulating plate is connected with two pieces that float through first regulating plate, float and can produce the slip by first regulating plate relatively under the effort, this range of sliding is controlled by the fourth regulating plate of connecting, clearance between two pieces that float through this mode effective control, and make it keep in certain extent, it does benefit to unilateral netting atress dispersion to transmit the third regulating plate with the piece atress of floating through the fourth regulating plate under unilateral netting atress, the preferred rubber material of fourth regulating plate, certain shape variability has, do benefit to life's extension.
The bottom of the third adjusting plate is connected with a second adjusting plate through a pin, two ends of the second adjusting plate are respectively connected with a first adjusting plate horizontally arranged, an I-shaped structure is formed between the first adjusting plate and the second adjusting plate, two ends of the first adjusting plate respectively penetrate through the floating piece, and the end of the first adjusting plate is provided with a limiting plate with an area larger than that of the through hole. Two float and float the piece and float along with it under stormy waves effect or surface of water object collision, the displacement of floating the piece drives the displacement and the deformation of aquatic etting, for reducing above-mentioned influence, it forms the displacement to drive fourth regulating plate pulling float relative first regulating plate through the rotation of third regulating plate, the displacement that can keep both sides float the piece at this in-process has the unanimity, no matter which side floats the piece atress and shifts relative first regulating plate, the float of opposite side is the same distance of first regulating plate displacement relatively, the clearance between two effective control floats, and make it keep in certain extent, simultaneously through fourth regulating plate with float the transmission of piece atress to third regulating plate do benefit to unilateral etting atress dispersion under unilateral etting atress, so that reach the atress minimum.
According to one embodiment of the invention, the net piece of the purse net is provided with net ropes which are connected transversely and longitudinally. The shock resistance of the net piece is improved by arranging the transverse and longitudinal net ropes on the net piece of the aquaculture purse net, the third component is favorably mounted at the net rope joint, the third component is directly mounted on the net piece, and the third component is mounted at the net rope joint to avoid relative damage to the net piece when waves impact occurs.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the first component and the sensor are arranged on the net piece, so that the stress of the purse net in the vertical direction and the horizontal direction can be monitored, the multi-direction stress condition of the purse net is monitored, the deformation of the netting can be controlled by tensioning the adjusting rope in the using process, the bearing strength of the water resistance of the netting is improved, and the effective culture volume of a culture purse net area or a culture net box is kept.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view showing a use state of a purse net with a device for detecting stress on a net sheet;
FIG. 2 is a schematic view of a seine structure with a device for detecting the stress of the meshes;
FIG. 3 shows a schematic view of a second assembly;
FIG. 4 shows another schematic view of the second assembly;
FIG. 5 shows a schematic structural view of a first assembly;
FIG. 6 shows a third assembly schematic;
FIG. 7 shows another schematic construction of the third assembly;
FIG. 8 shows a schematic view of the internal structure;
FIG. 9 shows a schematic view of a stop assembly;
figure 10 shows a schematic view of a first protective sheath;
FIG. 11 is a schematic diagram showing the connection of the first signal transceiver to the electrode and the metal wire;
FIG. 12 is a graph of the net characteristic volume as a function of flow for three test sets in the example.
Description of reference numerals: 10-a first component; 11-tensioning the adjusting rope; 12-a spring; 20-a second component; 21-a first regulating plate; 22-a second adjustment plate; 23-a third regulating plate; 24-a fourth regulation plate; 25-a limiting plate; 30-an electrode; 32-metal wire; 40-a first signal transceiving means; 41-second signal transceiving means; 42-an industrial personal computer; 43-a first pressure sensor; 45-a second pressure sensor; 46-data lines; 50-seine; 51-a net rope; 52-first protective cover; 521-slotting; 60-a float; 70-a third component; 71-supporting the side plates; 72-a stop assembly; 721-a first limiting member; 722-a second limiting member; 73-limiting groove; 731-arc groove; 74-a limiting plate; 75-through via.
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.
Example 1:
referring to fig. 5-10, a device for detecting forces on a mesh, comprising: a first component which is used for connecting the first component,
the first components 10 are arranged on the net piece in a horizontal straight line and are connected through tensioning adjusting ropes 11;
the first assembly 10 comprises: the third assemblies 70 are arranged on the mesh at intervals, the third assemblies 70 are connected through springs 12, a first pressure sensor 43 is arranged at the joint of the springs 12 and the third assemblies 70, a data wire 46 of the first pressure sensor 43 is wound in a mesh weaving net rope and is connected with a first signal transceiver 40, and the first signal transceiver 40 is arranged on the buoyant float 60;
the first signal transceiver 40 is wirelessly connected to a second signal transceiver 41 provided on the ground, and the second signal transceiver 41 is connected to an industrial personal computer 42. A signal amplifier and a filter are further arranged between the second signal transceiver 41 and the industrial personal computer 42, and are used for amplifying and filtering the received signal so as to improve the accuracy of the monitoring data.
According to the invention, the stress of the purse net 50 in the vertical direction and the horizontal direction can be monitored by arranging the first component 10 and the sensor on the net piece, the multi-direction stress condition of the purse net 50 is monitored, the deformation of the netting can be controlled by tensioning the adjusting rope 11 in the using process, the bearing strength of the netting on water resistance is improved, and the effective culture volume of a culture purse net area or a culture net box is kept.
The third assembly 70 comprises two limiting plates 74 which are respectively arranged on two sides of the mesh and clamped with the mesh, a supporting side plate 71 which is parallel to the horizontal plane is arranged on one side of each limiting plate 74, the supporting side plates 71 of each third assembly 70 are positioned on the same side, the springs 12 are respectively connected with the supporting side plates 71 on the upper end and the lower end of each third assembly, and two through holes 75 are formed in the supporting side plates 71. The third component 70 is connected with the net pieces with different horizontal heights, under the connection of the spring 12, the length of the tensioning adjusting rope 11 can be stretched or shrunk to control the shrinkage of the spring 12 in the deformation process of the net, so that the control of the distance between the two third components 70 is realized, and the wind wave resistance is facilitated.
The tensioning adjusting rope 11 sequentially penetrates through the through holes 75 in the supporting side plates 71 of the first assemblies 10; the tensioning adjusting rope 11 can control the deformation of the netting in the using process, the bearing strength of the netting by water resistance is improved, and the effective culture volume of a culture purse net area or a culture net cage is kept.
Two ends of the tensioning adjusting rope 11 respectively penetrate through the through holes 75 upwards from the bottom surface of the supporting side plate 71 with a low horizontal height in the first assembly 10 and upwards penetrate through the through holes 75 in the supporting side plate 71 with a high horizontal height along the inner ring of the spring 12, and two ends of the tensioning adjusting rope 11 are respectively connected with the tensioning adjusting rope 11 corresponding to the first assembly 10 with the same horizontal height;
the rope end of the tensioning adjusting rope 11 passes through a through hole 75 in the supporting side plate 71 with the high horizontal height of the first assembly 10, passes through a through hole 75 in the supporting side plate 71 with the low horizontal height of the first assembly 10 downwards along the inner ring of the spring 12, and passes through another through hole 75 in the supporting side plate 71, so that the rope end of the tensioning adjusting rope 11 passes through another through hole 75 in the supporting side plate 71 with the high horizontal height of the first assembly 10 upwards along the inner ring of the spring 12, and the operations are repeated to sequentially pass through the first assemblies 10 on the same horizontal plane.
Specifically, the tensioning adjusting rope 11 is threaded through each first component 10, when the netting is impacted by water flow, the netting deforms, the pressure sensor on the first component 10 is pressed to measure the stress data of the netting, meanwhile, the tensioning adjusting rope 11 stretches along with the deformation of the netting in the deformation process, the tensioning adjusting rope 11 has upward pulling force to the supporting side plates 71 below the pulling springs 12 in the stretching process to enable the supporting side plates to move upwards, the springs 12 compress, the length of the tensioning adjusting rope 11 between the two first components 10 is prolonged and stretches along with the deformation of the netting, the existence of the springs 12 between the two supporting side plates 71 at the upper end and the lower end limits the distance range of the two supporting side plates 71 to control the stretched length of the tensioning adjusting rope 11 so as to control the deformation of the netting, the distance between the nettings at different horizontal heights is shortened to improve the wind wave resistance of the netting, and certainly, the contraction of the tensioning adjusting rope 11 can be realized under the counter-acting force of the springs 12, the spring 12 has a downward pushing force on the lower supporting side plate 71 to promote the distance between the two supporting side plates 71 to be enlarged, so that the tensioning adjusting rope 11 is contracted, the length of the tensioning adjusting rope between the two first assemblies 10 is reduced, and the deformation of the netting is controlled.
Because the first component 10 comprises the two third components 70, the length of the tensioning adjusting rope 11 is stretched or contracted to realize the reduction and expansion of the distance between the third components 70 with different horizontal heights up and down in the process of controlling the deformation of the netting, and the process drives the distance between the netting with different horizontal heights to contract and expand, thereby being beneficial to the separation of marine organisms attached to the netting and having a certain cleaning effect on the netting.
The clamping matching surfaces of the limiting plates 74 are respectively provided with crossed limiting grooves 73 corresponding in position and used for limiting the clamping of the net ropes 51 on the net piece.
The two limiting plates 74 are connected through a limiting assembly 72, an adjustable gap is formed between the two limiting plates 74, a second pressure sensor 45 is arranged on the clamping matching surface of the limiting plate 74, and the second pressure sensor 45 is wound in the mesh woven mesh rope and connected with the first signal receiving and transmitting device 40. The adjustable gap is smaller than the overlapping thickness of the two mesh weaving ropes. The limiting plates 74 extrude the second pressure sensor 45 under the action of ocean currents or object impact, the stress data of the mesh piece are obtained in the mode, and the installation control of the second pressure sensor 45 is provided under the condition that the mesh piece is guaranteed to be clamped through a proper gap between the two limiting plates 74.
The arc surface of the limiting groove 73 is provided with a plurality of arc grooves 731, the arc grooves 731 are provided for improving the connection effect between the limiting plates 74 and the net rope 51, the limiting assembly 72 includes a second limiting member 722 and a first limiting member 721, through holes corresponding to the positions are provided on the two limiting plates 74, the second limiting member 722 and the first limiting member 721 are inserted into the through holes, a threaded hole is provided at the connection end of the second limiting member 722 and the first limiting member 721, a threaded post correspondingly connected to the threaded hole is provided at the connection end of the first limiting member 721 and the second limiting member 722, and two non-connection ends of the second limiting member 722 and the first limiting member 721 are provided with limiting circular plates having a diameter larger than the inner diameter of the through hole of the limiting plate 74. The design of the limiting component 72 can realize the detachment and installation of the two limiting plates 75, and the gap between the two limiting plates 75 can be adjusted by screwing the first limiting member 721 and the second limiting member 722.
The first protecting sleeves 52 are sleeved on the tensioning adjusting ropes 11 between the first components 10, the surfaces of the first protecting sleeves 52 are provided with strip-shaped grooves 521, the arrangement of the first protecting sleeves 52 can play a role in protecting the tensioning adjusting ropes 11 and also avoid unnecessary friction or winding between the tensioning adjusting ropes 11 and the net sheets, the arrangement of the first protecting sleeves 52 can reduce the probability of attachment of organisms on the tensioning adjusting ropes 11, the tensioning adjusting ropes 10 between the first components 10 are preferably sleeved with a whole section of the first protecting sleeves 52, the sleeving of a plurality of sections of the first protecting sleeves 52 with smaller lengths is avoided as much as possible, the probability of falling of the first protecting sleeves 52 is reduced, and the deformation state of the netting is limited to a certain extent, particularly, the netting floats in a water body, the first protecting sleeves 52 of the whole section can play a role in limiting the floating deformation shape of the netting, and the damage rate of the volume of the purse net or net cage culture is reduced, avoid the risk that the netting deformation causes the breed scotch.
Example 2:
referring to fig. 1-4, the seine 50 comprises at least two horizontally arranged floating members 60, the bottom surfaces of the floating members 60 are connected with net sheets, the first assemblies 10 are arranged in rows on the net sheets, and the floating members 60 are connected through the second assemblies 20. The invention can realize the monitoring of the vertical and horizontal stress of the purse net 50 by arranging the first component 10 and the sensor on the purse net 50, monitor the multi-direction stress condition of the purse net 50, obtain the stress of the purse net 50 under different water depths through the position of the arranged first component 10, facilitate the data statistical analysis, adjust the arrangement of the purse net 50 according to the sea area condition, reduce the net breaking probability and the stability of the purse net or net cage provided with the first component 10 in water, improve the whole biological attack resistance of the purse net 50 by arranging two floating pieces 60 to respectively connect the corresponding net pieces to form the purse net 50 with a double-layer structure in consideration of the attack of other organisms in the culture process, arrange the second component 20 between the two floating pieces 60 to realize the connection of the upper end parts of the double-layer net pieces, ensure the stress of the double-layer purse net 50 to be transmitted, and avoid the stress of the single-side purse net 50 to be overlarge, the integral wind wave resistance and impact resistance effects of the purse seine 50 are improved, and the purse seine 50 can be used in a sea area with tidal current and flow velocity of 1.5 m/s.
According to the ocean current type: 1. gradient flow due to seawater density gradients, such as salt differences; 2. sea water flow caused by wind acting on the surface of the ocean, such as waves; 3. the first assemblies 10 are arranged on the netting of the purse seine 50 in an array, mainly in a rectangular array, so that the stress of the netting of different water depths can be monitored, the ocean current type of the purse seine using sea area can be analyzed according to the acquired stress data, and the arrangement of the purse seine 50 and the culture operation can be properly adjusted.
Referring to fig. 11, a metal wire 32 is woven in the woven rope of the mesh sheet, an insulating protective sleeve is arranged on the surface of the metal wire 32, one end of the metal wire is sealed by a sealant, the other end of the metal wire is connected with a first signal transceiver 40, and the first signal transceiver 40 is further connected with an electrode 30 arranged in water. The seawater is used as a conductor, when the net sheet is not damaged, namely the insulating protective sleeve on the metal wire 32 is not broken, the circuit is not conducted, the net sheet is damaged due to too large wave impact or is damaged due to object impact, the metal wire 32 is broken, the current is conducted through the seawater through the electrode 30 to form a loop, and the trigger signal is sent to the industrial personal computer 42 controlled by the ground through the first signal transceiver 40.
The second assembly 20 comprises a strip-shaped third adjusting plate 23, two ends of the third adjusting plate 23 are respectively connected with a fourth adjusting plate 24, one end of the fourth adjusting plate 24 is connected with the third adjusting plate 23 through a pin, and the other end is fixedly connected with the floating assembly 60. The invention designs a double-net structure, floating pieces 60 are arranged above the net pieces, the protection effect of the purse net or the net cage culture can be effectively improved, in order to avoid a certain gap between the double net pieces, which is beneficial to protection and the stability of the net in water, the gap between the two floating pieces 60 is reserved by arranging a third adjusting plate 23 and a fourth adjusting plate 24, thus the gap between the two net pieces is in a certain set range, the buffer effect of the net pieces with intervals for water flow impact or object impact is improved, a proper space is provided for the deformation of the netting under the action of water flow, the risk of the stress increase of the netting caused by unnecessary superposition between the two nettings is effectively prevented, and the wind wave and impact resistance effect of the whole purse net 50 is improved by dispersing the second component 20 when the netting at one side is stressed, therefore, the bearing strength of the purse net or the net cage for resisting the resistance of the netting to water can be realized.
The third adjusting plate 23 is arranged in parallel with the floating assembly 60, the third adjusting plate 23 is inserted with a first adjusting plate 21 which can slide relative to the third adjusting plate 23, the first adjusting plate 21 and the third adjusting plate 23 are arranged in a cross way, floating pieces 60 are inserted into two ends of the first adjusting plate 21, the floating pieces 60 can slide relative to the first adjusting plate 21, and limiting plates 25 are arranged at two ends of the first adjusting plate 21; the double floating pieces 60 float along with the wind and wave action or the collision of water surface objects, the displacement of the floating pieces 60 drives the displacement and the deformation of the net in water, in order to reduce the above influence, the third adjusting plate 23 is connected with the double floating pieces 60 through the first adjusting plate 21, the floating pieces 60 can slide relative to the first adjusting plate 21 under the action force, the sliding range is controlled by the connected fourth adjusting plate 24, the gap between the two floating pieces 60 is effectively controlled through the mode, and the floating pieces are kept in a certain range, the stress of the floating pieces 60 is transferred to the third adjusting plate 23 through the fourth adjusting plate 24 under the stress of the unilateral net, the unilateral net is favorably dispersed in stress, the fourth adjusting plate 24 is preferably made of rubber materials, has certain deformation rate, and is favorable for prolonging the service life.
The bottom of the third adjusting plate 23 is connected with a second adjusting plate 22 through a pin, two ends of the second adjusting plate 22 are respectively connected with the first adjusting plate 21 horizontally arranged, an I-shaped structure is formed between the first adjusting plate 21 and the second adjusting plate 22, two ends of the first adjusting plate 21 respectively penetrate through the floating piece 60, and the end part of the first adjusting plate 21 is provided with a limiting plate 25 with an area larger than that of the through hole. The double floating pieces 60 float along with the collision of wind waves or water objects, the displacement of the floating pieces 60 drives the displacement and deformation of the net in water, in order to reduce the above influence, the fourth adjusting plate 24 is driven by the rotation of the third adjusting plate 23 to pull the floating pieces 60 to form displacement relative to the first adjusting plate 21, in the process, the displacement of the floating pieces 60 on two sides can be kept consistent, namely no matter which side of the floating pieces 60 is stressed to displace relative to the first adjusting plate 21, the floating pieces 60 on the other side are also displaced by the same distance relative to the first adjusting plate 21, the gap between the two floating pieces 60 is effectively controlled and kept in a certain range, and meanwhile, the stress of the floating pieces 60 is transferred to the third adjusting plate 23 through the fourth adjusting plate 24 under the stress of the net on one side, so that the stress is minimum.
The net piece of the purse net 50 is provided with a net rope 51 which is connected transversely and longitudinally. Set up the net rope 51 of violently indulging handing-over on the net piece of breeding the purse seine 50 and improve the shock resistance of net piece, also do benefit to the third subassembly 70 and install the handing-over department of net rope 51, compare in the third subassembly 70 direct mount on the net piece, install the third subassembly 70 and form relative destruction to the net piece when the third subassembly 70 can avoid crossing the wave impact to net rope 51 handing-over department.
The purse net 50 is provided with a heavy-weight iron block or a sand bag at the bottom for tightly connecting the purse net 50 with the seabed to prevent the cultured object from escaping from a connecting gap between the seabed and the purse net 50, a proper ditch corresponding to the ditch can be dug on the seabed, the sand bag or the heavy-weight iron block is placed into the ditch and filled with corresponding fillers to realize the tight connection between the bottom of the purse net 50 and the seabed, the net sheet is provided with a displacement sensor, a data line of the displacement sensor is connected with the first signal transceiver 40, and the displacement sensor is arranged for detecting whether the floating displacement distance of the purse net 50 exceeds a limit value or not and is also one of monitoring means for preventing the fish from escaping.
In addition, the net sheets and the net ropes 51 are preferably made of ultra-high molecular weight polyethylene material in consideration of safety, so that the situation that the fishing net is broken due to the bite of sharks or other predatory fishes can be avoided, for example, the purse net can be made of common polyethylene or nylon material in consideration of the investment cost of the purse net, but other measures for preventing the predatory organisms from attacking should be taken.
Example 3:
the force measuring method of the device on the fence in the embodiment is as follows:
when the netting is impacted by water flow, the netting deforms, the pressure sensor on the first component 10 is pressed to measure the stress data of the netting, the first signal transceiver 40 is wirelessly connected with the second signal transceiver 41 arranged on the land base to transmit data, the data are transmitted to the industrial personal computer 42 to be recorded and analyzed, the ocean current type of the purse net using sea area can be analyzed according to the obtained stress data, the arrangement and the breeding operation of the purse net 50 are properly adjusted, when the netting is stressed, the tight adjusting rope 11 can control the deformation of the netting in the using process, the bearing strength of the water resistance of the netting is improved, and the effective breeding volume of the breeding purse net area or the breeding net cage is kept.
The first protective sleeve 52 may be replaced periodically, typically half a year, to allow for the attachment of living organisms to the first protective sleeve 52, and the use of the tension adjusting cords 11 may be checked and recorded during the replacement process.
Flow resistance test:
the test was carried out in a water tank of 200m × 1.2m × 1.75m specification, a test water depth of 0.7m, water flow controlled by a one-dimensional flow meter, and flow rate measured by an ADV acoustic doppler velocimeter.
The test method is that three groups of netting gears are respectively used as test groups in a water tank for testing, the flow rate is selected from 0, 0.1, 0.2, 0.3, 0.4 and 0.5m/s, the flow rate range of a real object is 0-1.3m/s, the three groups of test groups are uniformly connected with a balance weight (12N/square meter) by adopting a bottom anchor chain, test data are recorded, the net gear characterization volume of the three groups of test groups is obtained along with the change of flow, as shown in figure 12,
test group 1: sequentially installing the devices for detecting the stress of the meshes in the embodiments 1 and 2 by using the net cages with the length of 0.8m, the width of 0.67m and the height of 0.33m, installing two floating pieces 60 around the net cages and installing a second component 20;
test group 2: the devices for detecting the stress of the meshes in the embodiment 1 are sequentially installed by using the net cages with the length of 0.8m, the width of 0.67m and the height of 0.33m, and the floating pieces 60 and the second component 20 are not installed on the periphery of the net cages;
test group 3: a net cage with the length of 0.8m multiplied by the width of 0.67m multiplied by the height of 0.33m is used, and a plurality of pressure sensors are arranged on the net cage;
as can be seen from the attached figure 12, the characteristic volume of the net cage in the test group 1 has the smallest influence under the action of water bodies with different flow rates, the characteristic volume of the net cage in the test group 2 starts to change greatly after the flow rate of the water bodies reaches 0.4m/s, and the characteristic volume of the net cage in the test group 3 starts to change greatly after the flow rate of the water bodies reaches 0.3m/s, so that the net cage in the test group 1 has stronger flow resistance and can be used in a sea area with higher flow rate, the net cage in the test group 2 has moderate flow resistance, and the net cage in the test group 3 has general flow resistance and can only be used in a sea area with lower flow rate.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (7)
1. A device for detecting mesh strain, comprising: a first component (10) for the first component,
the first assemblies (10) are arranged on the net piece in a horizontal straight line, and the first assemblies (10) are connected through tensioning adjusting ropes (11);
the first assembly (10) comprises: the device comprises two groups of third components (70), wherein the third components (70) are arranged on the net piece at intervals up and down, the third components (70) are connected through springs (12), a first pressure sensor (43) is arranged at the joint of the springs (12) and the third components (70), a data wire (46) of the first pressure sensor (43) is wound in a net piece woven net rope and is connected with a first signal transceiver (40), and the first signal transceiver (40) is arranged on a buoyant float (60) with buoyancy;
the first signal transmitting and receiving device (40) is in wireless connection with a second signal transmitting and receiving device (41) arranged on a land base, and the second signal transmitting and receiving device (41) is connected with an industrial personal computer (42);
the third assemblies (70) comprise two limiting plates (74) which are respectively arranged on two sides of the mesh and clamped with the mesh, one side of each limiting plate (74) is provided with a supporting side plate (71) parallel to the horizontal plane, the supporting side plates (71) of the third assemblies (70) are positioned on the same side, the springs (12) are respectively connected with the supporting side plates (71) on the upper end and the lower end of each supporting side plate, and the supporting side plates (71) are provided with two through holes (75);
the tensioning adjusting rope (11) sequentially penetrates through holes (75) in the supporting side plates (71) of the first assemblies;
two ends of the tensioning adjusting rope (11) respectively penetrate through the through holes (75) upwards from the bottom surface of the supporting side plate (71) with low horizontal height in the first assembly (10) and upwards penetrate through the through holes (75) in the supporting side plate (71) with high horizontal height along the inner ring of the spring (12), and two ends of the tensioning adjusting rope (11) are respectively connected with the tensioning adjusting rope (11) corresponding to the first assembly (10) with the same horizontal height;
the rope end of the tensioning adjusting rope (11) penetrates through a through hole (75) in a supporting side plate (71) with a high horizontal height of the first assembly (10), downwards penetrates through a through hole (75) in a supporting side plate (71) with a low horizontal height of the first assembly (10) along the inner ring of the spring (12), and penetrates through another through hole (75) in the supporting side plate (71), so that the rope end of the tensioning adjusting rope (11) upwards penetrates through another through hole (75) in the supporting side plate (71) with a high horizontal height of the first assembly (10) along the inner ring of the spring (12), and the operations are repeated to sequentially penetrate through the first assemblies (10) on the same horizontal plane;
set up criss-cross spacing recess (73) that the position corresponds on limiting plate (74) clamping fitting surface respectively, two connect through spacing subassembly (72) between limiting plate (74), two adjustable clearance has between limiting plate (74), be equipped with second pressure sensor (45) on limiting plate (74) clamping fitting surface, second pressure sensor (45) are through twining in the net piece is woven the net rope and be connected with first signal transceiver (40).
2. The device for detecting mesh strain of claim 1, wherein: a first protective sleeve (52) is sleeved on the tensioning adjusting rope (11) between the first assemblies (10), and a strip-shaped groove (521) is formed in the surface of the first protective sleeve (52).
3. A seine using the device for detecting the force applied to the mesh according to any of claims 1-2, characterized in that: the purse seine (50) comprises at least two floating parts (60) which are horizontally arranged, the bottom surfaces of the floating parts (60) are connected with a net sheet, the first components (10) are arranged on the net sheet in an array mode, and the floating parts (60) are connected through a second component (20).
4. A seine with the use of a device for detecting the stress exerted on a mesh according to claim 3, characterized in that: metal wires (32) are woven in the weaving rope of net piece, metal wires (32) surface is equipped with insulating protective sheath, a metal wires tip is sealed by sealed glue, and another tip connects first signal transceiver (40), first signal transceiver (40) still are connected with electrode (30) of locating aquatic.
5. The seine with the device for detecting the force applied to the mesh according to claim 4, wherein: the second assembly (20) comprises a strip-shaped third adjusting plate (23), two end parts of the third adjusting plate (23) are respectively connected with a fourth adjusting plate (24), one end of the fourth adjusting plate (24) is connected with the third adjusting plate (23) through a pin, and the other end of the fourth adjusting plate is fixedly connected with the floating assembly (60).
6. The seine with the device for detecting the force applied to the mesh according to claim 4, wherein:
the third adjusting plate (23) is arranged in parallel with the floating assembly (60), a first adjusting plate (21) capable of sliding relative to the third adjusting plate (23) is inserted into the third adjusting plate (23), the first adjusting plate (21) and the third adjusting plate (23) are arranged in a cross mode, floating pieces (60) are inserted into two ends of the first adjusting plate (21), the floating pieces (60) can slide relative to the first adjusting plate (21), and limiting plates (25) are arranged at two ends of the first adjusting plate (21);
third regulating plate (23) bottom has second regulating plate (22) through pin joint, first regulating plate (21) that the level set up are connected respectively to second regulating plate (22) both ends, form the I shape between first regulating plate (21) and second regulating plate (22), float piece (60) and tip are run through respectively to first regulating plate (21) both ends and are equipped with limiting plate (25) that the area is greater than the through hole.
7. The seine with the device for detecting the force applied to the mesh according to claim 4, wherein: the net piece of the purse net (50) is provided with a net rope (51) which is connected transversely and longitudinally.
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| CN113607591B (en) * | 2021-10-09 | 2022-02-01 | 山东省科学院海洋仪器仪表研究所 | Device and method for testing contact wear of metal net for mariculture |
| CN115486398B (en) * | 2022-10-11 | 2024-03-22 | 南方海洋科学与工程广东省实验室(湛江) | Spacing connection structure, spacing connecting device and box with a net structure |
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Denomination of invention: Device for detecting the force on the mesh and the fence using the device Effective date of registration: 20221128 Granted publication date: 20211214 Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Zhoushan Putuo small and micro enterprise franchise sub branch Pledgor: Zhoushan Tianmu Aquatic Technology Co.,Ltd. Registration number: Y2022330003085 |
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