CN212464597U - Seaweed bed fish sample collection device - Google Patents
Seaweed bed fish sample collection device Download PDFInfo
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- CN212464597U CN212464597U CN202021935313.3U CN202021935313U CN212464597U CN 212464597 U CN212464597 U CN 212464597U CN 202021935313 U CN202021935313 U CN 202021935313U CN 212464597 U CN212464597 U CN 212464597U
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Abstract
The utility model discloses a sea grass bed fish sample collection system is made by nylon net material matter, can be used to realize the collection of fish sample among the sea grass bed ecosystem, has characteristics such as portable, laborsaving, convenient operation, can quantitative estimation resource volume. The sea grass bed fish sample collecting device comprises components such as a net bag, a floating ball, a lead block, a floating line and a traction rod. The floating line has fixed length, which is convenient for calculating and surveying sea-sweeping area. The working principle of the seaweed bed fish sample collecting device is as follows: the device is placed in a seaweed bed, and the net bag are unfolded to enable the floating lines of the two wings to be parallel to the shoreline; two persons tightly hold the traction rod, keep the traction rod vertical to the ground, and slowly drag the device to the bank at a constant speed; the two wings are folded while dragging at the shallow water position of the bank; after the folding, the net bag is shaken to collect the samples at the position of the net bag, the net port at the bottom is untied, and the samples are collected.
Description
Technical Field
The utility model relates to an important collection instrument of sea grass bed fish investigation and research, what specifically say is related to is a sea grass bed fish sample collection device.
Background
The seaweed bed ecosystem is an extremely high-productivity ecosystem in offshore areas, which, although occupying only 0.15% of the global ocean area, contributes to a net primary productivity of 1% of the global ocean. In recent years, due to the decline of offshore fishery resources, the function of the seaweed bed to provide food sources and shelters for fishes is receiving attention. However, affected by human activities and global climate changes, since the 80's of the 20 th century, the global sea-grass bed area has been at 110km per year2The speed of (c) disappears. On a global scale, the seaweed bed has a changing trend of fragmentation and plaque formation, which leads to the reduction of the quantity of seaweed resources, and further threatens the habitat of seaweed bed fishes. However, studies on the effect of the biological maintenance function of the seaweed bed and the change in the amount of resources on the fishes have not been clarified yet. The fish is an important index for evaluating the function of the seaweed bed for providing food sources and sheltering places.
The device for collecting the sample of the seaweed bed fish is an important collecting tool for researching and surveying the seaweed bed fish, and biological and ecological information such as the species, the quantity, the body length, the population age, the community structure, the ingestion, the distribution condition and the like of organisms can be further analyzed through collected fish samples. How to conveniently, quickly, labor-saving and completely acquire the fish diversity information of representative samples in a research area is a precondition for deeply developing the research and scientific research of the ecological system of the seaweed bed.
Regarding the collection of seaweed bed fish samples, common netting gears are ground cages and thorny nets. Placing ground cages in a seaweed bed area, and recovering the ground cages every other day to obtain fishes entering the ground cages; the method is simple to lay, does not need operators to watch for a long time, but has the defects of overlong sampling period time, undersized operation area, excessive passive collection and the like, and also has the risk of sample decay caused by exposure outside in low tide, and more importantly, only the bottom fishes of the seaweed bed can be collected, but the middle and upper fishes are not easy to capture. The flow barbed net mainly adopts a triple barbed net, fishes are frightened to enter the barbed net for capturing by knocking a wood board to give out sound, the method can rapidly collect samples, but the method focuses on collecting middle and upper layer fishes, the bottom layer fishes are not easy to capture due to the influence of seaweed plants, in addition, the method has great harm to the fishes, few living bodies survive and is inconvenient to use in low tide. More importantly, the two methods cannot quantitatively evaluate the diversity and resource quantity of the fishes due to the fact that the sea sweeping area cannot be calculated, and are not beneficial to the development of the protection and management work of the ecological system of the sea grass bed.
The traditional seaweed bed fish sample collecting device is comparatively analyzed, and the following problems are found:
(1) the middle-upper layer fishes and the bottom layer fishes of the seaweed bed cannot be collected simultaneously;
(2) the sea sweeping area cannot be estimated, and the diversity and the resource quantity of the sample cannot be quantitatively estimated;
(3) the net is customized at a fixed position, the sample collection is passive, and the collection range is greatly limited;
(4) the damage to the fish is large, and the living body sample is not easy to obtain.
SUMMERY OF THE UTILITY MODEL
Therefore, in order to solve the above-mentioned deficiencies, the present invention provides a seabed fish sample collection device; can acquire the sample data of style fast, laborsaving, high-efficient, relate to a section and make by nylon netting material matter, can be used to realize the collection system of fish sample among the sea grass bed ecosystem, have characteristics such as comprehensive, portable, laborsaving, convenient operation, can quantitative estimation resource quantity.
The utility model is realized in such a way that a sea grass bed fish sample collecting device is constructed, which comprises a mesh bag, a floating ball, a lead block and a floating line; the floating line is arranged on the upper end edge of the mesh bag and is connected with the upper end edge of the mesh bag; a plurality of groups of floating balls are arranged on the floating lines; the tail part of the net bag is connected with the net bag to form a whole; the lower end edge of the mesh bag is provided with a plurality of groups of lead blocks.
Optimized, the utility model discloses among the sea grass bed fish sample collection device, the floating line has the fixed length, is convenient for calculate investigation area of sweeping the sea.
Optimized, the utility model discloses among the sea grass bed fish sample collection device, the multiunit lantern ring that all has arranged along last the lower extreme of float line and pocket, the both ends of floater and lead block are connected with the hasp subassembly respectively.
Preferably, in the device for collecting the sea grass bed fish samples, the mesh bag is formed by movably arranging a plurality of mesh units by adopting zippers or lock catch components;
each plurality of reticular units are provided with outer frame strips and nylon nets fixed in the middle areas of the outer frame strips, and the floating balls and the lead blocks are respectively connected at the upper end edges and the lower end edges of the outer frame strips; the upper end edge of the outer frame strip is provided with a light reflecting coating.
Optimized, the utility model discloses among the sea grass bed fish sample collection device, the both ends of pocket are worn to overlap on drawing the stick through the haulage rope, are convenient for dilato.
Optimized, the utility model discloses among the sea grass bed fish sample collection device, there is the net gape of elasticity bottom the string bag, easily fish collection.
Optimized, the utility model discloses among the sea grass bed fish sample collection device, this collection system still includes the actuating system of outer joint, and actuating system includes pulling rope, book and unreel rope mechanism and control switch, and the pulling rope is two sets of, is connected with the flaring both sides of pocket respectively, and control switch rolls through power cord or remote control mode control and unreels the rope mechanism operation, rolls up that unreels the end of rope mechanism and links to each other with two sets of pulling ropes simultaneously.
Preferably, in the device for collecting the sample of the marine grass bed fish of the present invention, the inside of the net bag is additionally provided with the first collecting net and the second collecting net, the middle parts of the first collecting net and the second collecting net respectively form the first circular through hole and the second circular through hole, and the diameter of the second circular through hole is smaller than that of the first circular through hole, so that the first collecting net and the second collecting net respectively form ring nets with different sizes; a middle collecting cavity is formed between the first collecting net and the second collecting net, and an inner collecting cavity is formed at the rear part of the second collecting net.
Optimized, the utility model discloses among the sea grass bed fish sample collection device, the border portion of first collection net and second collection net is provided with lantern ring B to establish ties together through the stay cord, the stay cord stretches out through outside guide ring, and the guide ring setting is in pocket border department.
Optimally, the device for collecting the seaweed bed fish samples is operated in the following mode;
step 1, putting the whole device in a seaweed bed, and then unfolding a net bag and a net bag to enable the floating lines of the two wings to be parallel to a shoreline;
step 2, two persons tightly hold the traction rod, keep the traction rod vertical to the ground, slowly drag the device to the shore at a constant speed, and realize fish sample collection;
and 4, shaking the net bag, collecting the samples on the outer side at the position of the net bag, unfastening the net port at the bottom and collecting the samples.
The utility model has the advantages of as follows: the utility model relates to a device which is made of nylon net material and can be used for realizing the collection of fish samples in a seaweed bed ecosystem, and has the following improvements and advantages;
can simultaneously collect the fishes at the middle and upper layers and the fishes at the bottom layer of the seaweed bed, and the sample collection is more scientific.
The utility model 1 provides a sea grass bed fish sample collecting device, which comprises a net bag, a floating ball, a lead block and a floating line; the floating line is arranged on the upper end edge of the mesh bag and is connected with the upper end edge of the mesh bag; a plurality of groups of floating balls are arranged on the floating lines; the tail part of the net bag is connected with the net bag to form a whole; the lower end edge of the mesh bag is provided with a plurality of groups of lead blocks. The utility model relates to a section is made by nylon net material matter, can be used to realize the collection system of fish sample among the sea grass bed ecosystem, has characteristics such as portable, laborsaving, convenient operation, can quantitative estimation resource volume. The sea grass bed fish sample collecting device comprises components such as a net bag, a floating ball, a lead block, a floating line and a traction rod. The floating line has fixed length, which is convenient for calculating and surveying sea-sweeping area.
And 2, the lower ends of the middle floating threads and the mesh bags of the utility model are provided with a plurality of groups of lantern rings on the edge, and the two ends of the floating ball and the lead block are respectively connected with a locking component. The floating ball and the lead block are designed to be movable, and the floating balls and the lead blocks with different quantities can be assembled according to actual conditions.
Its 3, the utility model discloses in with the activity form that the pocket design comprises a plurality of netted units, can adopt zip fastener or hasp subassembly to constitute, its benefit can be according to actual conditions extension or shorten the length of pocket.
4, each of the plurality of reticular units in the utility model is provided with an outer frame strip and a nylon net fixed in the middle area of the outer frame strip, and the floating ball and the lead block are respectively connected at the upper end edge and the lower end edge of the outer frame strip; the upper end edge of the outer frame strip is provided with a light-reflecting coating (suitable for night operation). This sea grass bed fish sample collection system adopts thicker nylon wire material, and the health condition of sample is easily guaranteed to the scale of difficult destruction sample.
And 5, the utility model discloses can also adopt automatically controlled receipts to draw towed mode to realize dragging this device, specifically be this collection system that this collection system still includes the outer joint, actuating system includes tractive rope, unreels rope mechanism and control switch, and the tractive rope is two sets of, is connected with the flaring both sides of pocket respectively, and control switch controls through power cord or remote control mode and unreels the rope mechanism operation, and the end that receive and releases of reeling and unreeling the rope mechanism links to each other with two sets of tractive ropes simultaneously. It should be noted that the driving system can exist together with the traction rod (when in implementation, two ends of the mesh bag are sleeved on the traction rod through the traction rope, which is beneficial to traction), and the traction rod is used for facilitating traction; and the driving system is further convenient for collecting the net.
6, the bottom of the net bag is provided with a net opening which can be loosened and tightened, thus being easy for fish collection.
It 7, in the utility model discloses among the sea grass bed fish sample collection device, the string bag can be a layer of net, also can adopt multilayer structure as shown in fig. 5, the string bag inside as shown in fig. 5 increases and has first acquisition net and second acquisition net, first acquisition net and second acquisition net middle part form first circular through-hole and second circular through-hole respectively, second circular through-hole 17 diameter is less than first circular through-hole diameter for first acquisition net and second acquisition net form the looped netowrk of variation in size respectively; a middle collecting cavity is formed between the first collecting net and the second collecting net, and an inner collecting cavity is formed at the rear part of the second collecting net. The advantage of adding here first collection net and second collection net is that form middle part and gather the chamber with inside, and its advantage is can realize fish sample collection by the string bag in dragging the process, and the fish sample is difficult for breaking away from after directly getting into the string bag moreover.
In the implementation process, the edge parts of the first collection net and the second collection net are provided with lantern rings and are connected in series through pull ropes, the pull ropes extend out through an external guide ring, and the guide ring is arranged at the edge of the mesh bag. Outside personnel can manually pull (or drag) the stay cord in the dragging process, can adjust the middle part and gather chamber and inside and gather the chamber space size, can convenient, swift draw in first collection net and second collection net.
9, compared with the traditional fish sample collecting device, the utility model also has the following advantages; a. the floating line has fixed length, the sea sweeping area of investigation is easy to calculate, and the diversity and the resource quantity of the sea grass bed fishes can be quantitatively evaluated. b. The design of the net bag is added, so that the collection of samples is facilitated. c. The color is designed to be dark green, is similar to the color of seaweed, is not easy to be perceived by fishes, and is convenient for collecting samples. d. The lead block with proper weight is selected, so that the lead block is not too light or too heavy, and is suitable for the sea grass bed habitat.
Drawings
Fig. 1 is a schematic view of embodiment 1 of the present invention;
fig. 2 is a schematic view of embodiment 2 of the present invention;
fig. 3 is a schematic view of embodiment 3 of the present invention;
fig. 4 is a schematic view of embodiment 4 of the present invention;
FIG. 5 is a schematic view of another embodiment of the net bag of the present invention;
fig. 6 is a schematic diagram of a single reticulation unit according to the present invention.
Wherein: the net bag 1, the string bag 2, the floater 3, the lead block 4, the float wire 5, draw the stick 6, the lantern ring 7, the hasp subassembly 8, netted unit 9, the haulage rope 10, the haulage rope 11, the rope mechanism 12 is put in the book, control switch 13, first collection net 14, second collection net 15, first circular through-hole 16, the circular through-hole 17 of second, cavity 18 is gathered at the middle part, inside collection cavity 19, lantern ring B20, stay cord 21, guide ring 22, frame strip 91, nylon net 92, reflection of light coating 93.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 6, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a seaweed bed fish sample collecting device through improvement, which is implemented as follows;
as shown in fig. 1, fig. 1 is embodiment 1 of the present invention; the collecting device comprises a mesh bag 1, a mesh bag 2, a floating ball 3, a lead block 4 and a floating line 5; the floating line 5 is arranged on the upper end edge of the mesh bag 1 and is connected with the upper end edge of the mesh bag 1; a plurality of groups of floating balls 3 are arranged on the floating line 5; the tail part of the net bag 1 is connected with the net bag 2 to form a whole; the lower end edge of the mesh bag 1 is provided with a plurality of groups of lead blocks 4.
Fig. 2 is embodiment 2 of the present invention; on the basis of the embodiment 1, the improved structure is that a plurality of groups of lantern rings 7 are arranged on the lower end edges of the floating line 5 and the mesh bag 1, and two ends of the floating ball 3 and the lead block 4 are respectively connected with a locking and buckling assembly 8. The advantage of embodiment 2 is that the floating ball 3 and the lead block 4 are designed to be movable, and the floating ball 3 and the lead block 4 with different quantities can be assembled according to actual conditions.
Fig. 3 is embodiment 3 of the present invention; on the basis of the former two embodiments, the mesh bag 1 can be designed to be a movable form consisting of a plurality of mesh units 9, and can be formed by a zipper or a lock assembly, which has the advantage that the length of the mesh bag 1 can be prolonged or shortened according to actual conditions.
As shown in fig. 6, each of the plurality of net-shaped units 9 has an outer frame strip 91 and a nylon net 92 fixed in the middle area of the outer frame strip 91, and the floating ball 3 and the lead block 4 are respectively connected to the upper and lower end edges of the outer frame strip 91; the upper edge of the outer frame strip 91 has a light reflecting coating 93. This sea grass bed fish sample collection system adopts thicker nylon wire material, and the health condition of sample is easily guaranteed to the scale of difficult destruction sample.
Fig. 4 is a schematic view of embodiment 4 of the present invention; different from the above embodiments, the embodiment adopts an electric control reeling and unreeling traction mode to realize the dragging of the device, specifically, the acquisition device further comprises an externally connected driving system, the driving system comprises two groups of hauling ropes 11, a reeling and unreeling rope mechanism 12 and a control switch 13, the hauling ropes 11 are respectively connected with two sides of the flaring of the mesh bag 1, the control switch 13 controls the reeling and unreeling rope mechanism 12 to operate through a power line or a remote control mode, and the reeling and unreeling ends of the reeling and unreeling rope mechanism 12 are simultaneously connected with the two groups of hauling ropes 11. It should be noted that the driving system can exist together with the traction bar 6, and the traction bar 6 is used for facilitating traction; and the driving system is further convenient for collecting the net.
In terms of the above implementation forms, when implemented; the floating line 5 has a fixed length, so that the sea area is convenient to calculate and investigate.
When in implementation; the two ends of the mesh bag 1 are sleeved on the traction rod 6 through the traction rope 10, and the mesh bag has the advantage of being convenient to drag.
In addition, the bottom of the net bag 2 is provided with a net opening which can be loosened and tightened, so that the fish can be easily collected.
In addition, in the device for collecting marine grass bed fish samples of the present invention, the tuck net 2 may be a layer of net, and may also adopt a multilayer structure as shown in fig. 5, a first collecting net 14 and a second collecting net 15 are added inside the tuck net 2 as shown in fig. 5, a first circular through hole 16 and a second circular through hole 17 are formed in the middle of the first collecting net 14 and the second collecting net 15, respectively, and the diameter of the second circular through hole 17 is smaller than the diameter of the first circular through hole 16, so that the first collecting net 14 and the second collecting net 15 form different ring nets respectively; a central acquisition lumen 18 is formed between the first acquisition web 14 and the second acquisition web 15, and an internal acquisition lumen 19 is formed behind the second acquisition web 15. The advantage of adding the first and second collection nets 14 and 15 here is that a central collection chamber 18 and an inner collection chamber 19 are formed, which has the advantage that the collection of fish samples can be performed by the net bag 2 during towing and that the fish samples are not easily detached directly after entering the net bag 2.
In practice, the edges of the first and second acquisition webs 14, 15 are provided with a loop B20 and are connected in series by a drawstring 21, the drawstring 21 extending through an outer guide ring 22, the guide ring 22 being provided at the edge of the bag 1. In the dragging process, an external person can manually drag (or drag) the pull rope 21, the space sizes of the middle collecting cavity 18 and the inner collecting cavity 19 can be adjusted, and the first collecting net 14 and the second collecting net 15 can be conveniently and quickly collected.
The working principle of the seaweed bed fish sample collecting device is as follows: the device is placed in a seaweed bed, and the net bag are unfolded to enable the floating lines of the two wings to be parallel to the shoreline; two persons tightly hold the traction rod, keep the traction rod vertical to the ground, and slowly drag the device to the bank at a constant speed; the two wings are folded while dragging at the shallow water position of the bank; shaking the net bag to collect the sample in the net bag, unfastening the net port in the bottom and collecting the sample.
Compared with the prior equipment of the same type, the utility model has the advantages of the following improvement;
can simultaneously collect the fishes at the middle and upper layers and the fishes at the bottom layer of the seaweed bed, and the sample collection is more scientific.
The utility model 1 provides a sea grass bed fish sample collecting device, which comprises a net bag 1, a net bag 2, a floating ball 3, a lead block 4 and a floating line 5; the floating line 5 is arranged on the upper end edge of the mesh bag 1 and is connected with the upper end edge of the mesh bag 1; a plurality of groups of floating balls 3 are arranged on the floating line 5; the tail part of the net bag 1 is connected with the net bag 2 to form a whole; the lower end edge of the mesh bag 1 is provided with a plurality of groups of lead blocks 4. The utility model relates to a section is made by nylon wire material matter, can be used to realize the collection system of fish sample among the sea grass bed ecosystem, has characteristics such as portable, laborsaving, convenient operation, can quantitative estimation resource volume. The sea grass bed fish sample collecting device comprises components such as a net bag, a floating ball, a lead block, a floating line and a traction rod. The floating line has fixed length, which is convenient for calculating and surveying sea-sweeping area.
And 2, the lower end of the middle floating line 5 and the mesh bag 1 of the utility model is provided with a plurality of groups of lantern rings 7 along the upper part, and the two ends of the floating ball 3 and the lead block 4 are respectively connected with a locking component 8. The floating ball type lead block assembling machine has the advantages that the floating ball 3 and the lead block 4 are designed to be movable, and the floating ball 3 and the lead block 4 with different quantities can be assembled according to actual conditions.
Its 3, the utility model discloses in design pocket 1 for the active form of compriseing a plurality of netted units 9, can adopt zip fastener or hasp subassembly to constitute, its benefit can be according to actual conditions extension or shorten pocket 1's length.
4, in the utility model, each of the plurality of net-shaped units 9 is provided with an outer frame strip 91 and a nylon net 92 fixed in the middle area of the outer frame strip 91, and the floating ball 3 and the lead block 4 are respectively connected at the upper and lower end edges of the outer frame strip 91; the upper edge of the outer frame strip 91 is provided with a light-reflecting coating 93 (suitable for night operation). This sea grass bed fish sample collection system adopts thicker nylon wire material, and the health condition of sample is easily guaranteed to the scale of difficult destruction sample.
It 5, the utility model discloses can also adopt automatically controlled receipts to draw towed mode to realize dragging this device, specifically be this collection system that this collection system still includes the outer joint, actuating system includes tractive line 11, unreels rope mechanism 12 and control switch 13, and tractive line 11 is two sets of, is connected with the flaring both sides of pocket 1 respectively, and control switch 13 is through power cord or remote control mode control unreel 12 operation of rope mechanism, and the end that receive and releases of unreeling rope mechanism 12 links to each other with two sets of tractive lines 11 simultaneously. It should be noted that the driving system can exist together with the traction rod 6 (when in implementation, two ends of the mesh bag 1 are sleeved on the traction rod 6 through the traction rope 10, which is beneficial to facilitating traction), and the traction rod 6 is used for facilitating traction; and the driving system is further convenient for collecting the net.
6, the bottom of the net bag 2 is provided with a net opening which can be loosened and tightened, thus being easy for fish collection.
It 7, in the utility model discloses among the sea grass bed fish sample collection device, string bag 2 can be a layer of net, also can adopt multilayer structure as shown in fig. 5, the string bag 2 inside as shown in fig. 5 increases and has first collection net 14 and second collection net 15, first collection net 14 and second collection net 15 middle part form first circular through-hole 16 and second circular through-hole 17 respectively, second circular through-hole 17 diameter is less than first circular through-hole 16 diameter for first collection net 14 and second collection net 15 form the looped netowrk of variation in size respectively; a central acquisition lumen 18 is formed between the first acquisition web 14 and the second acquisition web 15, and an internal acquisition lumen 19 is formed behind the second acquisition web 15. The advantage of adding the first and second collection nets 14 and 15 here is that a central collection chamber 18 and an inner collection chamber 19 are formed, which has the advantage that the collection of fish samples can be performed by the net bag 2 during towing and that the fish samples are not easily detached directly after entering the net bag 2.
In its implementation, the edges of the first and second acquisition webs 14, 15 are provided with a loop B20 and are connected in series by a drawstring 21, the drawstring 21 extending through an outer guide ring 22, the guide ring 22 being provided at the edge of the bag 1. In the dragging process, an external person can manually drag (or drag) the pull rope 21, the space sizes of the middle collecting cavity 18 and the inner collecting cavity 19 can be adjusted, and the first collecting net 14 and the second collecting net 15 can be conveniently and quickly collected.
9, compared with the traditional fish sample collecting device, the utility model also has the following advantages; a. the floating line has fixed length, the sea sweeping area of investigation is easy to calculate, and the diversity and the resource quantity of the sea grass bed fishes can be quantitatively evaluated. b. The design of the net bag is added, so that the collection of samples is facilitated. c. The color is designed to be dark green, is similar to the color of seaweed, is not easy to be perceived by fishes, and is convenient for collecting samples. d. The lead block with proper weight is selected, so that the lead block is not too light or too heavy, and is suitable for the sea grass bed habitat.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A sea grass bed fish sample collecting device is characterized in that; the collecting device comprises a mesh bag (1), a mesh bag (2), a floating ball (3), a lead block (4) and a floating line (5); the floating line (5) is arranged on the upper end edge of the mesh bag (1) and is connected with the upper end edge of the mesh bag (1); a plurality of groups of floating balls (3) are arranged on the floating line (5); the tail part of the net bag (1) is connected with the net bag (2) to form a whole; the lower end edge of the mesh bag (1) is provided with a plurality of groups of lead blocks (4).
2. The device for collecting a sample of a marine benthic fish according to claim 1, wherein; the floating line (5) has a fixed length, so that the sea sweeping area can be conveniently calculated and investigated.
3. The device for collecting a sample of a marine benthic fish according to claim 1, wherein; the lower extreme of float line (5) and pocket (1) is followed and is all arranged multiunit lantern ring (7), the both ends of floater (3) and lead (4) are connected with hasp subassembly (8) respectively.
4. The device for collecting a sample of a marine benthic fish according to claim 1, wherein; the mesh bag (1) is formed by a plurality of mesh units (9) movably by adopting zippers or lock catch assemblies;
each plurality of reticular units (9) is provided with an outer frame strip (91) and a nylon net (92) fixed in the middle area of the outer frame strip (91), and the floating ball (3) and the lead block (4) are respectively connected at the upper end edge and the lower end edge of the outer frame strip (91); the upper end edge of the outer frame strip (91) is provided with a reflective coating (93).
5. The device for collecting a sample of a marine benthic fish according to claim 1, wherein; two ends of the mesh bag (1) are sleeved on the traction rod (6) through the traction rope (10) so as to be convenient to pull.
6. The device for collecting a sample of a marine benthic fish according to claim 1, wherein; the bottom of the net bag (2) is provided with a net opening which can be loosened and tightened, thus facilitating fish collection.
7. The device for collecting a sample of a marine benthic fish according to claim 1, wherein; the collecting device further comprises an externally connected driving system, the driving system comprises two groups of pulling ropes (11), rope winding and unwinding mechanisms (12) and control switches (13), the pulling ropes (11) are respectively connected with two sides of the flaring of the mesh bag (1), the control switches (13) control the rope winding and unwinding mechanisms (12) to operate in a power line or remote control mode, and the winding and unwinding ends of the rope winding and unwinding mechanisms (12) are simultaneously connected with the two groups of pulling ropes (11).
8. The device for collecting a sample of a marine benthic fish according to claim 1, wherein; a first collecting net (14) and a second collecting net (15) are additionally arranged in the net bag (2), a first circular through hole (16) and a second circular through hole (17) are respectively formed in the middle parts of the first collecting net (14) and the second collecting net (15), and the diameter of the second circular through hole (17) is smaller than that of the first circular through hole (16), so that looped nets with different sizes are respectively formed by the first collecting net (14) and the second collecting net (15); a central acquisition cavity (18) is formed between the first acquisition web (14) and the second acquisition web (15), and an internal acquisition cavity (19) is formed behind the second acquisition web (15).
9. The device for collecting a sample of a marine benthic fish according to claim 8, wherein; the edge parts of the first collection net (14) and the second collection net (15) are provided with a lantern ring B (20) and are connected in series through a pull rope (21), the pull rope (21) extends out through an external guide ring (22), and the guide ring (22) is arranged at the edge of the mesh bag (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021935313.3U CN212464597U (en) | 2020-09-08 | 2020-09-08 | Seaweed bed fish sample collection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021935313.3U CN212464597U (en) | 2020-09-08 | 2020-09-08 | Seaweed bed fish sample collection device |
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| Publication Number | Publication Date |
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| CN212464597U true CN212464597U (en) | 2021-02-05 |
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| CN202021935313.3U Expired - Fee Related CN212464597U (en) | 2020-09-08 | 2020-09-08 | Seaweed bed fish sample collection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112005973A (en) * | 2020-09-08 | 2020-12-01 | 自然资源部第三海洋研究所 | Seaweed bed fish sample collection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112005973A (en) * | 2020-09-08 | 2020-12-01 | 自然资源部第三海洋研究所 | Seaweed bed fish sample collection device |
| CN112005973B (en) * | 2020-09-08 | 2024-04-30 | 自然资源部第三海洋研究所 | Seaweed bed fish sample collection device |
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Granted publication date: 20210205 |