CN210482241U - River migration fish lures collection device - Google Patents

Abstract

The utility model provides a river migration fish lures collection device is splayed dustpan column structure, including induced net wall, install the riverbed netting of the lower foot line of induced net wall and carry out many spuds fixed to induced net wall. The induction net walls comprise a side induction net wall close to the bank and a side induction net wall close to the center of the river, which are arranged in a splayed shape, the wide ends of the two induction net walls are connected through the wide end induction net wall, the narrow ends enclose a fish gathering part in a certain shape, the side induction net wall close to the bank is parallel to the water flow direction of the river, and the side induction net wall close to the center of the river is in a 45-degree trend with the water flow direction; the shape of the riverbed net is the same as the enclosing shape of the induction net wall, the wide end is provided with the heavy block, and the narrow end and the induction net wall jointly form a contraction opening connected with the fish collecting part.

Description

River migration fish lures collection device

Technical Field

The utility model belongs to the technical field of river migration fish acquires, concretely relates to river migration fish lures collection device.

Background

In recent years, due to engineering construction of river hydropower stations and the like, longitudinal communication of rivers is blocked, upstream and downstream water bodies are continuously blocked in geographic space, biological processes of migratory fishes are continuously influenced greatly, resources are seriously degraded, many types of migratory fishes are even endangered and exhausted, and therefore the resource protection of the migratory fishes is increasingly paid attention by the nation and various social concerns. In the Yangtze river basin, the cascade development engineering of water resources at the upper reaches of the Yangtze river clearly requires the adoption of matched protective measures for the migratory fishes. Because the river course at the upper reaches of the Yangtze river is narrow, most of the two banks are cliff and Chongshan mountains, the natural conditions are severe, the construction difficulty of the fishway is high, and the construction cost is huge. Some researchers propose an alternative method for assisting fishes to complete the anaplastic tracing through artificial induction and living body transportation, and the key link of the method is to efficiently induce and avoid the body damage of target fishes. Cage pots and traps are common trapping net tools at present, and have small damage to organisms caused by target fishes, but the trapping effect is poor. In addition, in order to promote river fish resource protection, a large number of living body samples are needed for carrying out researches on river fish breeding, breeding increase and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a go on for solving above-mentioned problem, the defect that the device exists is lured to river migration fish among the prior art, provides a river migration fish of brand-new design and lures collection device to improve the entrapment success rate of river migration fish. In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a river migration fish lures collection device is splayed dustpan column structure, has following technical characteristic: comprises an induction net wall, a riverbed netting arranged on a lower line of the induction net wall, a plurality of fixing piles for fixing the induction net wall and a fish collecting part in a certain shape. The induction net walls comprise a side induction net wall close to the bank and a side induction net wall close to the center of the river, which are arranged in a splayed shape, the wide ends of the two induction net walls are connected through the wide end induction net wall, the narrow ends enclose a fish gathering part in a certain shape, the side induction net wall close to the bank is parallel to the water flow direction of the river, and the side induction net wall close to the center of the river is in a 45-degree trend with the water flow direction; the shape of the riverbed net is the same as the enclosing shape of the induction net wall, the wide end is provided with the heavy block, and the narrow end and the induction net wall jointly form a contraction opening connected with the fish collecting part.

Further, the utility model provides an in the device is lured to river migration fish, the mesh density of induced net wall and riverbed netting is the same to practice thrift the cost, also can design into differently certainly.

Furthermore, in the device for luring fish in river migration provided by the utility model, each fixing pile is provided with two slots, and the inserting strips are inserted into the slots, wherein the height of the inserting strips is less than that of the fixing piles, and a plurality of fixing blocks with threaded holes are arranged on the inserting strips at intervals; the two ends of each induction net wall are respectively provided with a fixing piece, and the fixing pieces are provided with a plurality of through holes which respectively correspond to the threaded holes on the fixing pieces.

Further, the utility model provides an among the device is lured to river migration fish, the iron chain is installed to the wide end of riverbed netting, lures the device to carry on spacingly fixed to whole.

Further, the utility model provides an among the device is lured to river migration fish, the direction of change of wide end to narrow end of riverbed netting is opposite with the rivers direction of river.

Further, the utility model provides an among the device is lured to river migration fish, river migration fish lures a set device from top to bottom to lay in the river course to the adaptability of luring a set device to the river course bottom matter is lured in the improvement.

Action and effect of the utility model

The utility model provides a river migration fish lures and collects device has following technological effect:

firstly, fishes living in natural waters have sensitive sense organs and are easy to trap to waters with large space, but the space of the fish-collecting part is small, so that target fishes are easy not to enter the fish-collecting part due to the compression effect of the space. In the utility model, on one hand, the adopted inducing net wall comprises a inducing net wall which is arranged in a splayed shape and is close to the bank side and a inducing net wall which is close to the river center side, the shape of the riverbed net is the same as the enclosing shape of the inducing net wall, and the narrow end and the inducing net wall jointly form a contraction port to connect the fish collecting part; on the other hand, before trapping, the river migration fish trapping device is laid on a river channel for fish migration along a river bank through fixing piles, the net wall is induced to be parallel to the water flow direction of the river bank side, the net wall is induced to be 45 degrees with the water flow direction by the river center side, and the problem that the target fishes are trapped but not trapped is solved through a method of combining trapping and netting, so that the trapping effect is improved.

Secondly, because the change direction from the wide end to the narrow end of the riverbed net is opposite to the water flow direction of the river, the riverbed net is gradually and slowly lifted to the water surface from the wide end to the narrow end of the riverbed net through the net walls on the two sides during trapping, the trapped fish are driven to actively swim to the fish trapping part, the lifting direction of the net is opposite to the water flow direction, and the net is bent backwards under the impact of the water flow, so that the extrusion of the net to the trapped fish can be reduced.

Thirdly, because river migration fish lures collection device from top to bottom to lay in the river course, has better adaptability to river course substrate structure.

Drawings

Fig. 1 is a schematic structural view of a trapping device for river migratory fish according to an embodiment of the present invention in a trapping state;

FIG. 2 is a schematic diagram showing the net-hauling sequence of the device for luring and collecting river migratory fishes after luring and collecting according to the embodiment of the present invention;

fig. 3 is a schematic view of a connection structure of an induced net wall and a fixing pile in an embodiment of the present invention;

fig. 4 is a schematic structural view of a fixing pile in the embodiment of the present invention;

fig. 5 is a schematic structural view of a fixing block in the embodiment of the present invention;

fig. 6 is a schematic view of a connection structure between an induction net wall and a fixing block according to an embodiment of the present invention.

Detailed Description

The present invention will be described in detail with reference to the following embodiments and drawings. The following examples should not be construed, however, as limiting the scope of the invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The embodiment of the utility model provides an overall structure of river migration fish lures collection device is shown in figure 1 and figure 2.

As shown in fig. 1 and 2, the device 100 for trapping migratory fish in river has an overall structure of a generally splayed dustpan, and includes an inducing net wall 1, a riverbed net 2, a plurality of fixing piles 3, and a fish collecting part 4.

The induced net wall 1 is fixed through a fixing pile 3, a foot line is connected with a riverbed net 2 and comprises a splayed induced net wall 11 close to a bank side and an induced net wall 12 close to a river center side, the induced net wall 11 close to the bank side is parallel to the water flow direction, and the induced net wall 12 close to the river center side is 45-degree in direction with the water flow direction.

The shape of the riverbed net 2 is the same as the enclosing shape of the induction net wall 1, the wide end is provided with an iron chain to limit and fix the whole induction device, and the narrow end and the induction net wall jointly form a contraction port 21 connected with the fish collecting part 4. The fish collecting part 4 is a cuboid structure formed by enclosure of net walls. In this embodiment, the mesh density of the riverbed netting is the same as that of the inducing net wall, so as to save cost, but the riverbed netting and the inducing net wall can be designed to be different.

The number of the fixing piles 3 is adjusted according to the length of the inducing net wall. The fixed piles 3 are ten in total, four of the fixed piles are respectively arranged at four corners of the wide end and the narrow end of the induced net wall, and the other six fixed piles are arranged at intervals on the induced net wall 11 close to the bank side and the induced net wall 12 close to the river center side. A schematic view of a connection structure between one section of the net wall and the fixing piles at two ends is shown in fig. 3.

Fig. 4 shows the structure of the fixing pile, as shown in fig. 4, two slots 31 are provided on the fixing pile 3, and a plurality of fixing blocks 321 with threaded holes 321a are provided at intervals on the inserting bar 32, in combination with fig. 5. In this embodiment, the height of cutting is less than the height of spud pile, ensures that lures the collection device and can go deep into river bottom.

In this embodiment, the included angle between two slots on the spud pile in different positions is different, and the included angle between two slots installed on the spud piles at four corners of the wide end and the narrow end of the induced mesh wall is 90 °, and the included angle between two slots on other six spud piles is 180 °.

Fig. 6 is a schematic view of a connection structure of the induction net walls and the fixing blocks, and as can be seen from fig. 6, fixing pieces 13 are respectively arranged at two ends of each induction net wall, and a plurality of through holes are arranged on the fixing pieces and respectively correspond to the threaded holes on the fixing blocks.

The trap device in this embodiment is installed before starting trapping in the following manner: firstly, fixing and installing a fixed pile in a river channel according to the shape of an induction net wall; then every section of induced net wall and cutting 32 fixed connection to insert the cutting and install into the lower half of spud pile slot in, realize that the lures that collects the device and lay in the river course of fish migration along the bank of a river from top to bottom as shown in figure 1: the side near the bank of the river induces the net wall 11 to be parallel with the water flow direction of the river (shown by the arrow in figure 1), the side near the center of the river induces the net wall 12 to be 45 degrees with the water flow direction, and the change direction from the wide end to the narrow end of the riverbed net is opposite to the water flow direction of the river; and then bait is added on the riverbed net, and the density of the bait is gradually increased from the wide end to the narrow end of the riverbed net.

After the trapping is finished, the inducing net wall is sequentially lifted to the water surface slowly along the direction from the wide end to the narrow end of the riverbed net cover by lifting the cutting strips according to the sequence of 5, 6 and 7 in the figure 2, and the trapped fish is driven to actively swim to the fish collecting part.

Fishes living in natural waters have sensitive sense organs and are easy to trap to waters with large space, but the space of the fish-collecting part is small, so that target fishes are easy not to enter the fish-collecting part due to the compression effect of the space. In the utility model, on one hand, the adopted inducing net walls comprise the inducing net walls which are arranged in a splayed shape and are close to the side of the river bank and the inducing net walls which are arranged in the side of the river center, the wide ends of the two inducing net walls are connected through the inducing net walls with the wide ends, the narrow ends enclose the fish collecting part in a certain shape, and the shape of the riverbed netting is the same as the enclosing shape of the inducing net walls; on the other hand, before trapping, the river migration fish trapping device is laid on a river channel for fish migration along a river bank through fixing piles, the net wall is induced to be parallel to the water flow direction of the river bank side, the net wall is induced to be 45 degrees with the water flow direction by the river center side, and the problem that the target fishes are trapped but not trapped is solved through a method of combining trapping and netting, so that the trapping effect is improved.

In addition, the change direction from the wide end to the narrow end of the riverbed net is opposite to the water flow direction of a river, and the riverbed net is gradually and slowly lifted to the water surface from the wide end to the narrow end of the riverbed net through the net walls on the two sides during trapping, so that the trapped fish are driven to actively swim to the fish trapping part, the lifting direction of the net is opposite to the water flow direction, and the net is bent backwards under the impact of water flow, and the extrusion of the net to the trapped fish is favorably reduced.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a river migration fish lures collection device which characterized in that is splayed dustpan column structure, has:

an induction net wall, a riverbed netting arranged on a lower line of the induction net wall, a plurality of fixing piles for fixing the induction net wall and a fish collecting part in a certain shape,

wherein the inducing net wall comprises a side inducing net wall close to the bank and a side inducing net wall close to the center of the river which are arranged in a splayed shape, the side inducing net wall close to the bank is parallel to the water flow direction of the river, the side inducing net wall close to the center of the river is in 45-degree trend with the water flow direction,

the shape of the riverbed net is the same as the enclosing shape of the induction net wall, the wide end is provided with a heavy block, and the narrow end and the induction net wall jointly form a contraction opening connected with the fish collecting part.

2. The river migration fish trapping device according to claim 1, wherein:

wherein the mesh density of the induction net wall is the same as that of the riverbed netting.

3. The river migration fish trapping device according to claim 1, wherein:

wherein each fixing pile is provided with two slots, inserting strips are inserted into the slots, the height of each inserting strip is less than that of the fixing pile, a plurality of fixing blocks with threaded holes are arranged on the inserting strips at intervals,

and two ends of each induction net wall are respectively provided with a fixing piece, a plurality of through holes are formed in the fixing pieces, and the through holes respectively correspond to the threaded holes in the fixing pieces.

4. The river migration fish trapping device according to claim 1, wherein:

wherein, the wide end of the riverbed netting is provided with an iron chain.

5. The river migration fish trapping device according to claim 1, wherein:

wherein the change direction from the wide end to the narrow end of the riverbed net is opposite to the water flow direction of the river.

6. The river migration fish trapping device according to claim 1, wherein:

wherein, the river migration fish trapping device is laid on the river channel from top to bottom.

7. The river migration fish trapping device according to claim 1, wherein:

wherein the fish-collecting part is cuboid.

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