A fish early resource collection device suitable for a canyon flow river section

Abstract

The application relates to the field of fishery resource investigation, and particularly discloses a fish early resource collecting device suitable for a canyon flowing river section, which comprises a traction rope, a sliding piece and two limiting pieces. A heavy weight is connected to one end of the traction rope and sinks to the bottom of water, and a collecting mechanism for collecting fish early resources is connected to the other end of the traction rope. A first buoyancy piece is fixedly arranged on the collecting mechanism and floats on the water surface. The sliding piece is slidingly arranged on the traction rope, a second buoyancy piece is fixedly arranged on the sliding piece and floats on the water surface, and the two limiting pieces are fixedly arranged on the traction rope and respectively located at two ends of a sliding track of the sliding piece. The collecting device can be suspended on the water surface under the conditions of no ship fixing, high water level and large water level change, so that the fish early resources in the canyon flowing river section can be stably collected, and the collecting net is convenient to replace.

Description

Technical Field

[0001] This application relates to the field of fishery resource surveys, and in particular to an early fish resource collection device suitable for canyon river sections. Background Technology

[0002] Early fish resource surveys are an important tool for fish ecology and fisheries biology research. By investigating fish in the early life stages of natural waters, it is possible not only to estimate the size of breeding populations but also to provide a means of predicting replenishment. The data obtained on fish reproductive habits, the distribution of early habitats, and environmental requirements during early development play a positive role in the selection and breeding of new varieties and resource conservation in fisheries production.

[0003] Most early-stage fish resources are concentrated in the upper and middle layers of water. Existing early-stage fish resource collection devices typically involve fixing plankton nets to both sides of a boat, using the boat's movement to move the nets and collect early-stage fish resources from the water, or mooring the boat at the sampling point to collect early-stage fish resources from the current. These methods require long-term reliance on boats or are mainly used in water bodies with low water levels. However, in canyon sections of rivers with complex topography, large water level fluctuations, and fast currents, it is difficult to reliably collect early-stage fish resources using conventional collection devices. Summary of the Invention

[0004] In order to reliably collect early fish resources in canyon river sections, this application provides an early fish resource collection device suitable for canyon river sections.

[0005] The present application provides an early fish resource collection device suitable for canyon river sections, which adopts the following technical solution: An early fish resource collection device suitable for canyon river sections includes: The towing rope has a weight at one end that is submerged in the water and a collection mechanism at the other end that is used to collect early fish resources. A first buoyancy component is fixedly installed on the collection mechanism and floats on the water surface. A sliding component is slidably mounted on the traction rope, and a second buoyancy component is fixedly mounted on the sliding component, the second buoyancy component floating on the water surface; Two limiting members are fixedly installed on the traction rope, and the two limiting members are respectively located at both ends of the sliding trajectory of the sliding member.

[0006] Furthermore, the traction rope includes a first rope segment and a second rope segment, the weight is connected to the first rope segment, the collection mechanism is connected to the second rope segment, and a safety buckle is connected between the first rope segment and the second rope segment; the sliding member and the limiting member are both disposed on the first rope segment.

[0007] When the water level in the canyon section changes rapidly, such as during a rapid rise, the sliding member slides along the first rope segment under the buoyancy of the second buoyancy component. This keeps the sliding member close to the water surface. Under the combined traction of the second rope segment and the buoyancy of the first buoyancy component, the collection mechanism can remain relatively stable near the water surface (the sliding design minimizes the horizontal displacement of the collection mechanism during water level changes), which is beneficial for the stable collection of early-stage fish resources. Simultaneously, because the sliding member is always close to the water surface, the second rope segment applies a horizontal traction force to the collection mechanism, preventing the open end of the collection mechanism from pointing downwards, further facilitating the stable collection of early-stage fish resources.

[0008] Considering that one end of the traction rope is connected to a weight, making it inconvenient to remove the entire device from the water, this application uses a safety buckle to divide the traction rope into two sections. When it is necessary to replace the collection mechanism, simply open the safety buckle to separate the first rope section from the second rope section, then remove the collection mechanism for replacement. At this time, the first rope section connected to the weight is still in the water, and under the buoyancy of the second buoyancy component, the sliding component is located close to the water surface, making it easy for the operator to locate the end of the first rope section. Then, the first rope section can be reconnected to the second rope section using the safety buckle, completing the replacement of the collection mechanism.

[0009] Furthermore, the collection mechanism includes a collection net and a seedling collection tube connected to one end of the collection net, and the end of the collection net away from the seedling collection tube is connected to the second rope segment through a connecting mechanism.

[0010] Furthermore, the collection net includes a net cylinder and an annular belt fixed to one end of the net cylinder, and the connecting mechanism includes a first steel ring and a second steel ring, which are joined together to clamp the annular belt.

[0011] Furthermore, a protruding ring is fixedly provided on one side of the first steel ring, and at least three sets of engaging components are provided on one side of the second steel ring, the engaging components being used to clamp the protruding ring.

[0012] Furthermore, the engaging assembly includes a fixed arc block fixed to the second steel ring and a sliding arc block that slides radially along the second steel ring; the outer side of the fixed arc block abuts against the inner side of the convex ring, a gap is provided between the fixed arc block and the sliding arc block for accommodating the convex ring, and a driving member is provided on the second steel ring for driving the sliding arc block to slide radially along the second steel ring.

[0013] Furthermore, the second steel ring is fixedly connected to a connecting seat, and the driving component includes a threaded pin threaded to the connecting seat, one end of which is rotatably connected to the sliding arc block.

[0014] Furthermore, the convex ring is fixedly connected to at least three first connecting rings, the second steel ring is provided with a plurality of first connecting holes corresponding one-to-one with the first connecting rings, and the annular belt is provided with a plurality of second connecting holes corresponding one-to-one with the first connecting rings; the first connecting rings pass through the second connecting holes and the first connecting holes in sequence and are connected to the second rope segment.

[0015] During installation, one end of the data collection net is passed through the first steel ring, and the annular belt is flipped and fitted onto the first steel ring, allowing the first connecting ring to pass through the corresponding second connecting hole. Then, the second steel ring is aligned with the first steel ring, so that the convex ring is embedded in the gap between the fixed arc block and the sliding arc block, and the first connecting ring passes through the corresponding first connecting hole. Next, the threaded pin is rotated, causing the sliding arc block to slide radially along the second steel ring, so that the inner side of the sliding arc block abuts against the outer side of the convex ring, thereby stably clamping the convex ring between the fixed arc block and the sliding arc block, thus fixing the annular belt between the first and second steel rings. Finally, the first connecting ring is connected to the second rope segment, connecting the data collection mechanism to the traction rope.

[0016] Furthermore, the annular belt has at least three pairs of fixing holes.

[0017] Cable ties or ropes are passed through the fixing holes and tied to the first and second steel rings to further secure the ring belt to the first and second steel rings, thereby improving the stability of the connection between the data collection network and the connecting mechanism.

[0018] Furthermore, elastic pads are fixed to both the outer side of the fixed arc block and the inner side of the sliding arc block.

[0019] The elasticity and friction provided by the elastic pads help the fixed and sliding arc blocks to stably clamp the annular belt.

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. When the water level of the canyon section changes rapidly, the sliding component slides along the traction rope under the buoyancy of the second buoyancy component, so that the sliding component is always located close to the water surface. Under the traction force of the traction rope and the buoyancy of the first buoyancy component, the collection mechanism can be relatively stably maintained in a position close to the water surface, which is conducive to the stable collection of early fish resources. 2. Since the sliding component is always located close to the water surface, the traction rope applies a horizontal traction force to the collection mechanism, so that the opening end of the collection mechanism will not face downwards, which is conducive to the stable collection of early fish resources. 3. The data collection mechanism provided in this application enables convenient installation and replacement of the data collection network. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the slider structure in an embodiment of this application; Figure 3 This is a schematic diagram of the acquisition mechanism in the embodiments of this application; Figure 4 This is a schematic diagram of the structure of the first steel ring in the embodiments of this application; Figure 5 This is a schematic diagram of the structure of the second steel ring in the embodiment of this application.

[0022] Reference numerals: 1. Traction rope; 11. First rope segment; 12. Second rope segment; 13. Weight; 14. Limiting component; 2. Sliding block; 21. Second connecting ring; 31. First float; 32. Second float; 4. Safety buckle; 5. Connecting mechanism; 51. First connecting ring; 52. First steel ring; 521. Convex ring; 53. Second steel ring; 54. Engaging assembly; 541. Threaded pin; 542. Fixing arc block; 543. Elastic pad; 544. Sliding arc block; 545. Connecting seat; 55. First connecting hole; 6. Collection net; 61. Net tube; 62. Circular belt; 621. Fixing hole; 622. Second connecting hole; 7. Seedling collection tube. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0024] This application discloses an early fish resource collection device suitable for canyon river sections. (Refer to...) Figure 1 The early fish resource collection device suitable for canyon river sections includes a traction rope 1, a sliding component and two limiting components 14. One end of the traction rope 1 is connected to a weight 13 submerged in the water, and the other end is connected to a collection mechanism for collecting early fish resources.

[0025] Specifically, refer to Figure 1 The traction rope 1 includes a first rope segment 11 and a second rope segment 12. A weight 13 is connected to the first rope segment 11, and the collection mechanism is connected to the second rope segment. A safety buckle 4 connects the first rope segment 11 and the second rope segment 12. A first buoyancy component, which is a double-conical first float 31, is fixedly installed on the collection mechanism. Under the action of buoyancy, the first float 31 floats on the water surface, so that the collection mechanism is located below the water surface and close to the water surface.

[0026] Reference Figure 1 and Figure 2The sliding component is slidably mounted on the first rope segment 11 of the traction rope 1. In this embodiment, the sliding component is a cylindrical slider 2 with a through hole through which the first rope segment 11 passes. To ensure smooth sliding of the slider 2 along the first rope segment 11, the diameter of the through hole on the slider 2 is larger than the radial dimension of the first rope segment 11. A second buoyancy component is fixedly connected to the slider 2 by a second connecting ring 21 and a cable tie. The second buoyancy component is a double-conical second float 32. Under the action of buoyancy, the second float 32 floats on the water surface, placing the slider 2 below the water surface and close to it. To maintain stable sliding of the slider 2, two second floats 32 are provided and symmetrically arranged on both sides of the upper part of the slider 2. Both the first float 31 and the second float 32 can be made of foam or hollow plastic.

[0027] Reference Figure 1 Two limiting members 14 are fixedly connected to the first rope segment 11 of the traction rope 1. In this embodiment, the limiting members 14 are elongated strips; in other feasible embodiments, the limiting members 14 can also be other shapes. The two limiting members 14 are located at both ends of the sliding trajectory of the sliding member, respectively, and play a limiting role in the sliding of the sliding member. The distance between the two limiting members 14 is the maximum distance that the slider 2 can move under water level changes. In order to enable this device to adapt to water level changes in a specific river section, the position and spacing of the two limiting members 14 can be adjusted according to the water level change range of the river section.

[0028] When the water level in the canyon section changes rapidly, such as when the water level rises rapidly, the slider 2 slides along the first rope segment 11 under the buoyancy of the second float 32, keeping the slider 2 always close to the water surface. Under the traction of the second rope segment 12 and the buoyancy of the first float 31, the collection mechanism can be relatively stably maintained in a position close to the water surface, which is beneficial for the stable collection of early fish resources. At the same time, because the slider 2 is always in a position close to the water surface, the second rope segment 12 applies a horizontal traction force to the collection mechanism, preventing the open end of the collection mechanism from pointing downwards, which is also beneficial for the stable collection of early fish resources.

[0029] By setting the safety buckle 4, the traction rope 1 is divided into two sections. When it is necessary to replace the collection mechanism, simply open the safety buckle 4 to separate the first rope section 11 from the second rope section 12, and then remove and replace the collection mechanism. At this time, the first rope section 11, which is connected to the weight 13, is still in the water, and under the buoyancy of the second float 32, the slider 2 is located close to the water surface, making it easy for the operator to find the end of the first rope section 11. Then, the first rope section 11 and the second rope section 12 are reconnected through the safety buckle 4 to complete the replacement of the collection mechanism.

[0030] Furthermore, the length of the first rope segment 11 is greater than the length of the second rope segment 12. On the one hand, the length of the first rope segment 11 needs to be sufficient to cover the depth of the river section. On the other hand, the smaller the length of the second rope segment 12, the smaller the change in the horizontal position of the collection mechanism when the water level changes, which is more conducive to the stable collection of early fish resources.

[0031] Reference Figure 1 and Figure 3 The collection mechanism includes a conical collection net 6, with a seedling collection tube 7 threadedly connected to the small end of the collection net 6. The seedling collection tube 7 is made of PVC and has a rubber gasket installed at its inner bottom. The large end of the collection net 6 is connected to the second rope segment 12 via a connecting mechanism 5. Specifically, the collection net 6 includes a conical net tube 61 and an annular belt 62 fixed to the large end of the net tube 61. The mesh size of the net tube 61 is 0.5-0.8mm, and the annular belt 62 is made of a flexible and wear-resistant material, such as canvas. The connecting mechanism 5 includes a first steel ring 52 and a second steel ring 53 with a diameter of 60cm-80cm. The first steel ring 52 and the second steel ring 53 can be joined together to clamp the annular belt 62.

[0032] Reference Figure 4 and Figure 5 A protruding ring 521 is fixedly disposed on one side of the first steel ring 52, and four sets of engaging components 54 for clamping the protruding ring 521 are disposed on one side of the second steel ring 53. The four sets of engaging components 54 are evenly distributed along the circumference of the second steel ring 53. Each set of engaging components 54 includes a fixed arc block 542 fixed to the second steel ring 53 and a sliding arc block 544 that slides radially along the second steel ring 53; a gap is provided between the fixed arc block 542 and the sliding arc block 544 to accommodate the protruding ring 521. When the first steel ring 52 and the second steel ring 53 are engaged, the outer side of the fixed arc block 542 abuts against the inner side of the protruding ring 521, and a driving member is provided on the second steel ring 53 to drive the sliding arc block 544 to slide radially along the second steel ring 53.

[0033] Specifically, refer to Figure 5 The second steel ring 53 is fixedly connected to the connecting seat 545, and the driving component includes a threaded pin 541 threadedly connected to the connecting seat 545, with one end of the threaded pin 541 rotatably connected to the sliding arc block 544.

[0034] By rotating the threaded pin 541, the sliding arc block 544 is driven to slide radially along the second steel ring 53, causing the inner side of the sliding arc block 544 to press against the outer side of the convex ring 521, thereby stably clamping the convex ring 521 between the fixed arc block 542 and the sliding arc block 544. To achieve stable clamping, elastic pads 543 are fixed to both the outer side of the fixed arc block 542 and the inner side of the sliding arc block 544; the elastic pads 543 are used to provide elasticity and friction, and can be arc-shaped rubber pads.

[0035] Furthermore, refer to Figure 3 , Figure 4 and Figure 5 Four first connecting rings 51 are fixedly connected to the convex ring 521, and the four first connecting rings 51 are evenly distributed along the circumference of the convex ring 521. The second steel ring 53 has a plurality of first connecting holes 55 corresponding one-to-one with the first connecting rings 51, and the annular belt 62 has a plurality of second connecting holes 622 corresponding one-to-one with the first connecting rings 51. The first connecting rings 51 pass through the second connecting holes 622 and the first connecting holes 55 in sequence and are connected to the second rope segment 12.

[0036] Reference Figure 3 The annular belt 62 is also provided with four pairs of fixing holes 621 for cable ties or ropes to pass through, and the four pairs of fixing holes 621 are evenly distributed along the circumference of the annular belt 62.

[0037] When installing the data collection net 6, firstly, cable ties are threaded through each pair of fixing holes 621 of the annular belt 62. Then, the larger end of the data collection net 6 is passed through the first steel ring 52, and the annular belt 62 is flipped outward and fitted onto the first steel ring 52, so that the first connecting ring 51 passes through the corresponding second connecting hole 622. Subsequently, the second steel ring 53 is aligned with the first steel ring 52, so that the convex ring 521 is embedded in the gap between the fixed arc block 542 and the sliding arc block 544, and the first connecting ring 51 passes through the corresponding first connecting hole 55. Rotating the threaded pin 541 drives the sliding arc block 544 to slide radially along the second steel ring 53, so that the inner side of the sliding arc block 544 abuts against the outer side of the convex ring 521, thereby stably clamping the convex ring 521 between the fixed arc block 542 and the sliding arc block 544. At this time, the convex ring 521 is covered by the annular belt 62, thus achieving the fixation of the annular belt 62 between the first steel ring 52 and the second steel ring 53. Finally, the pre-attached cable ties on the annular belt 62 are tied and fixed to the first steel ring 52 and the second steel ring 53, completing the connection between the collection net 6 and the connecting mechanism 5. The end of the second rope segment 12 is divided into several rope segments and connected to the first connecting ring 51 one by one, realizing the connection between the collection mechanism and the traction rope 1.

[0038] When the collection net 6 needs to be replaced, untie the cable tie and loosen the threaded pin 541 to separate the second steel ring 53 from the first steel ring 52, thereby removing the collection net 6 for replacement. The operation is convenient.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for early fish resource collection suitable for canyon river sections, characterized in that: include: The towing rope has a weight at one end that is submerged at the bottom of the water, and a collection mechanism at the other end that is used to collect early fish resources. A first buoyancy component is fixedly installed on the collection mechanism and floats on the water surface. A sliding component is slidably mounted on the traction rope. The sliding component is a cylindrical slider with a through hole for the traction rope to pass through. A second buoyancy component is fixedly mounted on the sliding component. There are two second buoyancy components, which are symmetrically arranged on both sides of the upper part of the slider. The second buoyancy components float on the water surface. Two limiting members are fixedly installed on the traction rope, and the two limiting members are respectively located at both ends of the sliding trajectory of the sliding member. The traction rope includes a first rope segment and a second rope segment. The weight is connected to the first rope segment, and the collection mechanism is connected to the second rope segment. A safety buckle is connected between the first rope segment and the second rope segment. The sliding member and the limiting members are both installed on the first rope segment.

2. The early fish resource collection device suitable for canyon river sections according to claim 1, characterized in that: The collection mechanism includes a collection net and a seedling collection tube connected to one end of the collection net. The end of the collection net away from the seedling collection tube is connected to the second rope segment through a connecting mechanism.

3. The early fish resource collection device suitable for canyon river sections according to claim 2, characterized in that: The collection net includes a net cylinder and an annular belt fixed to one end of the net cylinder. The connecting mechanism includes a first steel ring and a second steel ring, which are joined together to clamp the annular belt.

4. The early fish resource collection device suitable for canyon river sections according to claim 3, characterized in that: A protruding ring is fixedly provided on one side of the first steel ring, and at least three sets of engaging components are provided on one side of the second steel ring, the engaging components being used to clamp the protruding ring.

5. The early fish resource collection device suitable for canyon river sections according to claim 4, characterized in that: The engaging assembly includes a fixed arc block fixed to the second steel ring and a sliding arc block that slides radially along the second steel ring; the outer side of the fixed arc block abuts against the inner side of the convex ring, and a gap is provided between the fixed arc block and the sliding arc block to accommodate the convex ring; a driving member is provided on the second steel ring to drive the sliding arc block to slide radially along the second steel ring.

6. The early fish resource collection device suitable for canyon river sections according to claim 5, characterized in that: The second steel ring is fixedly connected to a connecting seat, and the driving component includes a threaded pin threaded to the connecting seat, one end of which is rotatably connected to the sliding arc block.

7. The early fish resource collection device suitable for canyon river sections according to claim 4, characterized in that: The convex ring is fixedly connected to at least three first connecting rings, and the second steel ring is provided with a plurality of first connecting holes corresponding one-to-one with the first connecting rings. The annular belt is provided with a plurality of second connecting holes corresponding one-to-one with the first connecting rings. The first connecting rings pass through the second connecting holes and the first connecting holes in sequence and are connected to the second rope segment.

8. The early fish resource collection device suitable for canyon river sections according to claim 4, characterized in that: The annular belt has at least three pairs of fixing holes.

9. A fish early resource collection device suitable for canyon river sections according to claim 5, characterized in that: Elastic pads are fixed to both the outer side of the fixed arc block and the inner side of the sliding arc block.

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