Binding grille capable of being automatically cleaned

Abstract

The invention provides a narrowing grating capable of being automatically cleaned, and belongs to the field of fish behavior research. Comprising an anchor rope, a fixing frame, a grating plate scraper, a grating plate, a scraper support, a scraper sliding groove, a scraper driving rolling shaft, a scraper driving chain, a pull ring, a scraper driving rolling shaft support, a scraper support pressing wheel and an underwater camera. Fish in a river encounters blocking of the device in the river in the upstream tracing process. And the fish can swim along the downstream surface of the device. The invention has the following beneficial effects: 1) the downstream surface is not provided with a sharp part in the form of a blade, so that no harm is caused to fish; (2) the novel riverway narrowing grille is provided, and when the novel riverway narrowing grille is used for narrowing a wide and shallow riverway, the novel riverway narrowing grille can be automatically cleaned through a scraper device of the novel riverway narrowing grille; and 3) the device can be placed in a river channel for a long time without manual cleaning, so that fish behavior researchers are helped to save working time, and working difficulty is reduced.

Description

Technical Field

[0001] The invention relates to a device for observing the migration of fish in a river, in particular to a device for limiting the activity range of fish in a river, and belongs to the field of fish behavior research. Background Art

[0002] The movement and migration of fish in natural water bodies has always been an area of concern for fish researchers. When researchers need to know how many fish species there are and how many fish are active in a river, they generally use three methods:

[0003] 1) Traditional fish resource surveys centered on maximum effort catch;

[0004] 2) Using ship-borne fish sonar to conduct a cruise survey of fish resources;

[0005] 3) Fish resource survey using video and sonar identification using fixed devices in rivers.

[0006] Among them, for 1) the traditional fish resource survey centered on the maximum effort catch, its defects are: the damage to fish resources is very serious, and all the fish caught through fishing cannot be put back into the river; when the fish in the river need to be protected from reproduction during the conservation period, this method will cause great damage to the fish resources.

[0007] Regarding 2) the use of a ship-borne fish sonar cruise survey of fish resources, the disadvantages are: for the cruise sonar, its sampling time is limited, the cruise ship is always running on the water, which requires a lot of funds, and the accurate species of fish cannot be obtained through the sonar survey.

[0008] 3) Fish resource surveys using video and sonar identification of fixed devices in rivers are now a common approach in small rivers. However, there are the following difficulties in actual operation:

[0009] The use of river-blocking and narrowing devices is difficult: the underwater cameras fixed in the river have limited shooting distance and cannot obtain images of fish far away. Therefore, river-blocking devices are needed to narrow the river so that the underwater cameras can obtain images of fish when they pass through the narrowed part for further identification. This can make the images clearer and more effective. However, river-blocking devices are often blocked by aquatic plants and debris and need to be dredged frequently. Since river-blocking devices are temporary structures without foundations, they are fixed to the bottom of the river by iron rods and other methods. If they are not dredged, the river-blocking devices will soon be overturned. It is time-consuming and labor-intensive to dredge the river-blocking devices each time.

[0010] One idea is to flip the river-blocking device so that the original downstream side faces upstream, and in this way, the water coming from upstream will automatically wash away the debris hanging on the grid in the opposite direction. In actual operation, the inventor experimented with the above idea, but more than half of the debris still remained on the grid after flipping and could not be washed away. Especially for branches and waterweeds, they were basically stuck on the grid. Therefore, the inventor considered a completely new idea for cleaning. Summary of the Invention

[0011] The technical problem to be solved by the present invention is to provide a narrowing grille that can be automatically cleaned, which can cut and wash away debris and waterweeds through mechanical actions when the grille is blocked by debris and waterweeds.

[0012] The device of the present invention includes: anchor ropes, a fixed frame, grille plate scrapers, grille plates, scraper brackets, scraper chutes, scraper drive rollers, scraper drive chains, pull rings, scraper drive roller supports, scraper bracket pressure wheels, and underwater cameras;

[0013] The above-mentioned anchor ropes and pull rings anchor the fixed frame to the riverbed;

[0014] The above-mentioned grille plate is clamped on the fixed frame, and the scraper bracket is pressed on the grille plate by the scraper chute, wherein the scraper chute is fixed to the fixed frame by bolts.

[0015] The back of the scraper bracket is fixed with a scraper bracket pressure wheel, and the scraper bracket pressure wheel slides freely in the scraper chute. The above-mentioned scraper chute is fixed to both sides of the fixed frame by bolts;

[0016] The grille on the above-mentioned grille plate has a sharp blade structure on the upstream side, so that all the debris and waterweeds blocking the grille plate can be easily cut off;

[0017] The above-mentioned grille plate scraper has a double-edged structure on both the upper and lower sides and is fixed to the downstream side of the scraper bracket;

[0018] Both sides of the above-mentioned scraper bracket are fixed in the chute through scraper bracket pressure wheels;

[0019] The above-mentioned scraper bracket pressure wheel abuts against the inner side of the scraper chute. The scraper bracket pressure wheel is fixedly connected to the scraper bracket. The scraper chute exerts pressure on the scraper bracket pressure wheel, and the scraper bracket pressure wheel transmits the pressure to the scraper bracket, so that the scraper is closely attached to the grille;

[0020] Both sides of the scraper bracket are respectively connected to the scraper drive chain. The scraper drive chain bypasses the scraper drive roller and is connected to the scraper drive roller in a sprocket chain connection manner;

[0021] When the grid needs to be cleaned, the scraper drive roller 7 rotates under the drive of the power machinery scraper drive roller support, driving the scraper drive chain. The scraper drive chain 8 moves upward or downward, thereby driving the scraper support. The scraper support moves in the up and down direction under the support of the scraper chute and the scraper support roller, driving the scraper to slide and cut on the surface of the grid plate. After being cut by the scraper, waterweeds or branches will be washed away by the water flow.

[0022] During the upstream migration of schizothoracine fish in the river, they encounter the obstruction of the above device in the river. The schizothoracine fish will swim along the downstream surface of the above device. Since there is no sharp part in the form of a blade on the downstream surface, it will not cause any harm to the fish. When the schizothoracine fish swim to the camera channel, they continue to swim upstream, thus passing through the camera channel and being photographed by the underwater camera in the channel, and then obtaining the statistical results of the number and species of fish.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. A new type of river channel narrowing grid is provided. When it is used for narrowing wide and shallow river channels, it can be automatically cleaned through its own scraper device;

[0025] 2. The river channel narrowing grid proposed by the present invention can be placed in the river channel for a long time without manual cleaning, helping fish behavior researchers save working time and reduce working difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of a single body of a narrowing grid capable of automatic cleaning according to the present invention;

[0027] Figure 2 Schematic diagram of the installation of multiple fixed frames and grids of the narrowing grid according to the present invention;

[0028] Figure 3 Schematic diagram of one end of a single narrowing grid with a scraper drive roller support according to the present invention;

[0029] Figure 4 Schematic diagram of the structure of a separate scraper mechanism after being separated from the grid plate according to the present invention;

[0030] Figure 5 Schematic diagram of the structure of a separate scraper mechanism after removing one side of the scraper chute after being separated from the grid plate according to the present invention;

[0031] Figure 6 Schematic diagram of the layout of the present invention in the river channel and the passage of fish through the channel.

[0032] 1 Anchor rope; 2 Fixed frame, 3 Grille scraper, 4 Grille plate, 5 Scraper support, 6 Scraper chute, 7 Scraper drive roller, 8 Scraper drive chain, 9 Pulling ring, 10 Scraper drive roller support, 11 Scraper support pressure wheel; Detailed implementation mode

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] Embodiment 1

[0035] In this embodiment, schizothoracids in a wide and shallow river are used as the observation object, and the following steps are adopted to implement:

[0036] The device of the present invention includes: anchor rope 1, fixed frame 2, grille scraper 3, grille plate 4, scraper support 5, scraper chute 6, scraper drive roller 7, scraper drive chain 8, pulling ring 9, scraper drive roller support 10, scraper support pressure wheel 11, underwater camera 12;

[0037] The above-mentioned anchor rope 1 and pulling ring 9 anchor the fixed frame 2 to the riverbed;

[0038] The above-mentioned grille plate 4 is clamped on the fixed frame 2, and the scraper support 5 is pressed on the grille plate 4 by using the scraper chute 6, wherein the scraper chute 6 is fixed on the fixed frame by bolts.

[0039] The back of the scraper support 5 is fixed with a scraper support pressure wheel 11, and the scraper support pressure wheel 11 slides freely in the scraper chute 6. The above-mentioned scraper chute is fixed on both sides of the fixed frame 2 by bolts;

[0040] The grille on the above-mentioned grille plate 4 is a sharp blade structure on the upstream side, so that all sundries and waterweeds blocked on the grille plate 4 are easily cut off;

[0041] The above-mentioned grille scraper 3 has a double-edge structure on both the upper and lower sides and is fixed on the downstream side of the scraper support 5;

[0042] Both sides of the above-mentioned scraper support 5 are fixed in the chute by the scraper support pressure wheel 11;

[0043] The above-mentioned scraper support pressure wheel 11 abuts against the inner side of the scraper chute 6. The scraper support pressure wheel 11 is fixedly connected to the scraper support 5. The scraper chute 6 exerts pressure on the scraper support pressure wheel 11, and the scraper support pressure wheel 11 transmits the pressure to the scraper support 5, so that the scraper 3 is closely attached to the grille;

[0044] Both sides of the scraper support 5 are respectively connected to the scraper drive chain 8. The scraper drive chain 8 bypasses the scraper drive roller 7 and is connected to the scraper drive roller 7 in a sprocket chain connection manner;

[0045] When the grid needs to be cleaned, the scraper drive roller 7 rotates under the drive of the power machinery scraper drive roller support 10, driving the scraper drive chain 8. The scraper drive chain 8 moves upward or downward, thereby driving the scraper support 5. The scraper support 5 moves in the vertical direction under the support of the scraper chute 6 and the scraper support roller 11, driving the scraper 3 to slide and cut on the surface of the grid plate 4. After being cut by the scraper, aquatic plants or branches will be washed away by the water flow.

[0046] During the upstream migration of schizothoracine fish in the river, they encounter the obstruction of the above device in the river. The schizothoracine fish will swim along the downstream surface of the above device. Since there is no sharp part in the form of a blade on the downstream surface, it will not cause any harm to the fish. When the schizothoracine fish swims to the camera channel, it continues to swim upstream, so it passes through the camera channel and is photographed by the underwater camera 12 in the channel, and then the statistical results of the number and species of fish are obtained.

[0047] Embodiment 2

[0048] This embodiment is used to conduct a passability experiment on Schizopygopsis younghusbandi marked with PIT tags, and is implemented by the following steps:

[0049] 1. Use a fishing net to catch Schizopygopsis younghusbandi and record its weight and body length;

[0050] 2. Mark the above catches with PIT tags. The marking material used is the PIT tag of Oregon RFID Company, with a length of 5 mm;

[0051] 3. Put the marked catches in a cage in the original fishing ground for farming and feed them on time;

[0052] 4. After 2 days, select healthy and lively individuals in the cage for release;

[0053] 5. Set up this device in the intercepted river section before release and leave a 1.5 m wide gap on the river bank;

[0054] 6. Set up a PIT antenna and a transceiver at the gap so that the detection range of the PIT antenna covers the 1.5 m wide gap;

[0055] 7. After releasing the marked individuals, start monitoring the data collected by the PIT device;

[0056] 8. Finally, obtain the total number of marked individuals passing through this river section.

[0057] During the upstream migration of the marked Schizopygopsis younghusbandi in the river, it encounters the obstruction of the above device in the river. The Schizopygopsis younghusbandi will swim along the downstream surface of the above device. Since there is no sharp part in the form of a blade on the downstream surface, it will not cause any harm to the fish. When the Schizopygopsis younghusbandi swims to the PIT antenna channel, it continues to swim upstream, thus passing through the PIT antenna channel and being detected by the PIT antenna in the channel, and then an accurate result of the fish population is obtained.

Claims

1. An automatically cleanable narrowed grille, characterized in that: The described device includes: an anchor rope, a fixed frame, a grille scraper, a grille, a scraper support, a scraper chute, a scraper drive roller, a scraper drive chain, a pull ring, a scraper drive roller support, a scraper support pressure wheel, and an underwater camera; The anchor rope and the pull ring anchor the fixed frame to the riverbed; The grille is snap - connected to the fixed frame, and the scraper support is placed on the qualified grille with the scraper chute, where the scraper chute is fixed to the fixed frame by bolts.

2. The automatically cleanable constricted grille according to claim 1, wherein: The back of the scraper support is fixed with a scraper support pressure wheel, and the scraper support pressure wheel slides freely in the scraper chute. The above - mentioned scraper chute is fixed to both sides of the fixed frame by bolts; The grille on the grille has a sharp blade structure on the upstream side, making it easy to cut all the sundries and waterweeds blocked on the grille; The grille scraper has a double - edged structure on both the upper and lower sides and is fixed to the downstream side of the scraper support; Both sides of the scraper support are fixed in the chute by the scraper support pressure wheels.

3. A constricted grille capable of automatic cleaning according to claim 1, characterized in that: The scraper support pressure wheel abuts against the inner side of the scraper chute. The scraper support pressure wheel is fixedly connected to the scraper support. The scraper chute exerts pressure on the scraper support pressure wheel, and the scraper support pressure wheel transmits the pressure to the scraper support, making the scraper closely adhere to the grille; Both sides of the scraper support are respectively connected to the scraper drive chain. The scraper drive chain bypasses the scraper drive roller and is connected to the scraper drive roller in a sprocket - chain connection manner.

4. A constricted grille capable of automatic cleaning according to claim 1, characterized in that: When the grille needs to be cleaned, the scraper drive roller rotates under the drive of the power machinery scraper drive roller support, driving the scraper drive chain. The scraper drive chain moves upward or downward, thereby driving the scraper support. The scraper support moves in the up - and - down direction under the support of the scraper chute and the scraper support pressure wheel, driving the scraper to slide and cut on the surface of the grille. After being cut by the scraper, the waterweeds or branches will be washed away by the water flow.

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