Combined ecological fish reef for restoring benthic habitat of sand excavation areas of rivers and lakes

Abstract

The invention discloses a combined type ecological fish reef for restoring benthic habitat in sand excavation areas of rivers and lakes in the technical field of artificial fish reefs, which comprises a bottom rod, and further comprises a support rod positioned in the bottom rod and connected with the bottom rod in a sliding manner; the first fixing rod is embedded into the outer part of the supporting rod and is rotationally connected with the supporting rod; according to the combined type fish reef, the fish reef can be conveniently taken out and put in through the design of the combined type fish reef, a habitat site is provided for fishes after putting in, convenience can be provided for harvesting and fishing of the fishes after taking out, and the folded fish reef is in a plate shape and can be conveniently stacked, stored and transported; and when the fish reef is taken out, the first fixing rods are lifted to enable the supporting rods to slide upwards along the bottom rods to fold the fish reef, the lower frame can be gradually separated from the water bottom, then the fish reef is taken out, and the whole fish reef can be conveniently separated from the water bottom.

Description

Technical Field

[0001] The present invention relates to the technical field of artificial fish reefs, and particularly to a combined ecological fish reef for benthic habitat restoration in river and lake sand mining areas. Background Art

[0002] An artificial fish reef is a hydraulic structure suitable for aquatic organisms and fish to gather, inhabit, grow and reproduce, mainly providing a good habitat environment and a foraging and breeding place for aquatic organisms and fish, etc. For water source areas such as rivers and lakes, breeding areas are usually divided into sections or regions for fishery breeding and to promote fish reproduction. During the fish breeding period, fish reefs are placed for fish to gather, inhabit, grow and reproduce. During the harvesting period, in order to facilitate the harvest by dragnet without the harvest efficiency being reduced due to the presence of fish reefs, the fish reefs are usually removed from the water area to facilitate the harvest of large fish. This results in the need to take out and place the artificial fish reefs at specific times, and most of the existing fish reefs are directly precipitated to the bottom of the water by concrete, making their removal and placement difficult and inconvenient for transportation. Summary of the Invention

[0003] The purpose of the present invention is to provide a combined ecological fish reef for benthic habitat restoration in river and lake sand mining areas to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A combined ecological fish reef for benthic habitat restoration in river and lake sand mining areas, including a bottom rod, and further including: a support rod located inside the bottom rod and slidably connected to the bottom rod; a first fixing rod embedded outside the support rod and rotatably connected to the support rod; a second fixing rod located below the first fixing rod and fixedly connected to the bottom rod; two upper frames symmetrically distributed on the left and right sides of the first fixing rod and both of their tops rotatably connected to the first fixing rod; two middle frames respectively rotating at the bottoms of the two upper frames; two lower frames, the bottoms of which are respectively rotatably connected to the second fixing rod and the tops of which are respectively rotatably connected to the two middle frames; a limiting groove in a U shape and opened along the inner wall of the bottom rod; a fixed end located above the inside of the limiting groove and fixedly connected to the support rod.

[0005] As a further solution of the present invention, a pick-and-place group is arranged on the support rod, and the pick-and-place group includes: a fixed block, which is T-shaped and fixedly connected to the top end of the support rod; two baffles, which are fixedly connected to the inner wall of the support rod and the fixed block; two pressing plates, which are slidably connected to the baffles and a first spring is fixedly connected between their bottoms and the baffles; a slide groove is opened along the track of the support rod; a locking piece is slidably connected to the pressing piece, and the locking piece is located in the slide groove and fixedly connected to the inner wall of the support rod; a working rod is located on the support rod; two clamps are symmetrically distributed and slide horizontally on both sides of the bottom end of the working rod, and the bottom ends of the clamps are wedge-shaped; two second springs are fixedly connected between the clamps and the working rod, respectively, and when the clamps press down the pressing plate, the contact between the clamps and the fixed block can make the clamps slide along the working rod, and after the clamps drop below the fixed block, the second spring will push the clamps to hold the fixed block tightly; The trigger group is used to actively drive the two clamps to slide along the working rod.

[0006] As a further solution of the present invention, the trigger group includes a slide and two support rods, the slide is slidably connected to the working rod, the top ends of the two support rods are rotatably connected to the slide, and the bottom ends of the two support rods are respectively rotatably connected to the two clamps.

[0007] As a further solution of the present invention, an alignment rod is fixedly connected to the fixing block, and an alignment hole is opened at the bottom end of the working rod.

[0008] As a further solution of the present invention, a traction rope is fixedly connected to the alignment rod, a buoy is fixedly connected to the traction rope, and a lead-in hole is fixedly connected to the working rod.

[0009] As a further solution of the present invention, the upper frame, the middle frame and the lower frame are all provided with perforations and resting holes.

[0010] As a further solution of the present invention, the side walls of the upper frame are provided with ecological grass.

[0011] As a further solution of the present invention, the bottom end of the bottom rod is tapered.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention can facilitate the taking out and placing of fish reefs through the combined fish reef design, provide a habitat for fish after placement, and provide convenience for the harvesting and fishing of fish after taking out. The folded fish reef is in a plate shape, which can be convenient for stacking, storage and transportation. When taking out, the first fixing rod is lifted up to make the support rod slide up along the bottom rod to fold the fish reef, so that the lower frame can be gradually separated from the bottom of the water, and then it can be taken out, which can facilitate the separation of the fish reef as a whole from the bottom of the water.

[0013] The rotation of the support rod is restricted by locking the locking member and the pressing plate, thereby avoiding accidental touch and causing the fixed end to disengage from the uppermost part of the limiting groove, and preventing the fish reef from unfolding before the placement work, which may affect the placement and transportation work. When removing the fish reef, the work rod can be used to fold the fish reef into a plate shape and then lift it, which is convenient for taking and placing after lifting. Description of the Drawings

[0014] Figure 1 Schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the structure of the fish reef after unfolding of the present invention; Figure 3 Schematic diagram of the positional relationship between the support rod, the fixed end and the baffle of the present invention; Figure 4 Schematic diagram of the limiting groove of the present invention; Figure 5 Schematic diagram of the positional relationship between the work rod and the sliding piece of the present invention; Figure 6 is Figure 5 Local enlarged view of A in Figure 7 Schematic diagram of the positional relationship between the locking member, the sliding groove and the pressing piece of the present invention; Figure 8 Schematic diagram of the connection relationship between the first fixing rod and the locking member of the present invention; Figure 9 Schematic diagram of the relative displacement of the pressing piece and the locking member when the clamping member and the fixing block are tightly held of the present invention; Figure 10 Schematic diagram of the positional relationship when the alignment hole and the alignment rod coincide of the present invention.

[0015] In the drawings: 1, bottom rod; 2, support rod; 3, first fixing rod; 4, second fixing rod; 5, upper frame; 6, middle frame; 7, lower frame; 8, limiting groove; 9, fixed end; 10, fixing block; 11, baffle; 12, pressing piece; 13, first spring; 14, sliding groove; 15, locking member; 16, work rod; 17, clamping member; 18, second spring; 19, support rod; 20, alignment rod; 21, alignment hole; 22, towing rope; 23, buoy; 24, lead hole; 25, through hole; 26, habitat hole; 27, sliding piece. Detailed Description of the Invention

[0016] Please refer to Figures 1-10, the present invention provides a technical solution: a combined ecological fish reef for benthic habitat restoration in river and lake sand mining areas, including a bottom rod 1, and further including: a support rod 2, located inside the bottom rod 1 and slidably connected to the bottom rod 1; a first fixing rod 3, embedded outside the support rod 2 and rotatably connected to the support rod 2; a second fixing rod 4, located below the first fixing rod 3 and fixedly connected to the bottom rod 1; two upper frames 5, symmetrically distributed on the left and right sides of the first fixing rod 3 and both of their tops rotatably connected to the first fixing rod 3; two middle frames 6, respectively rotatably connected to the bottoms of the two upper frames 5; two lower frames 7, the bottoms of which are respectively rotatably connected to the second fixing rod 4 and the tops of which are respectively rotatably connected to the two middle frames 6; a limiting groove 8, in a U shape and opened along the inner wall of the bottom rod 1; a fixed end 9, located above the inside of the limiting groove 8 and fixedly connected to the support rod 2.

[0017] As Figure 1 , 2 Figure 5 and Figure 6 shown: Fish reef placement work: Before placement, the fixed end 9 is above the limiting groove 8. Since the limiting groove 8 is in a U shape, for the convenience of reference, the horizontal part above the limiting groove 8 is designated as a, the vertical part in the middle of the limiting groove 8 is designated as b, and the vertical part below the limiting groove 8 is designated as c; That is, before placement, the fish reef is in the Figure 1 shown state. At this time, the fixed end 9 is inside a. At this time, the fish reef is in a plate shape, which is convenient for transportation and storage. During placement, the fish reef is transported to the designated water area by the hull, and then the fish reef is straightened. Since the fixed end 9 is inside a at this time, the support rod 2 will not slide along the bottom rod 1 at this time. Therefore, it is necessary to rotate the support rod 2 to make the fixed end 9 rotate to directly above b. At this time, the support rod 2 rotates inside the first fixing rod 3. After the fixed end 9 rotates to directly above b, the support rod 2 slides down along the bottom rod 1, and then the upper frame 5, the middle frame 6, and the lower frame 7 expand into a rectangle above the first fixing rod 3 and the second fixing rod 4, and then become a fish reef. Then, rotate the support rod 2 again to make the fixed end 9 enter c. At this time, the fish reef is fixed after forming, and then it can be directly put into the water; Then, operate the remaining fish reefs in accordance with the above steps in sequence, so as to provide a habitat environment and a hiding structure for fish and benthic organisms; Fish reef removal work: When the fish reaches the harvest period, the fish reef is lifted out of the water surface and then the support rod 2 is rotated to rotate the fixed end 9 from c to the inside of b, and then the first fixed rod 3 is lifted up to make the support rod 2 slide up along the bottom rod 1 until the fixed end 9 slides up to a, and then the support rod 2 is rotated to make the fixed end 9 enter the inside of a. At this time, the fish reef becomes a plate again, and then the bottom rod 1 and the second fixed rod 4 can be separated from the bottom of the water by continuing to lift it out. By folding it first and then lifting it out, it is convenient to take out the fish reef as a whole, stack it for storage and transport it; After all the fish reefs are taken out, there will be no obstacles in the water area to block the drag net. Then, according to the size of the fish to be harvested, a net with a suitable mesh size can be selected for harvesting. During harvesting, smaller fish can escape through the mesh and can be put into the fish reefs again after the harvesting is completed. The present invention can facilitate the removal and placement of fish reefs through the combined fish reef design, provide a habitat for fish after placement, and provide convenience for the harvesting and fishing of fish after removal. The folded fish reef is in a plate shape, which can be convenient for stacking, storage and transportation. When taking out, the first fixing rod 3 is lifted up to make the support rod 2 slide up along the bottom rod 1 to fold the fish reef, so that the lower frame 7 can be gradually separated from the bottom of the water, and then it can be taken out, which can facilitate the separation of the fish reef as a whole from the bottom of the water.

[0018] A pick-and-place group is arranged on the support rod 2, and the pick-and-place group includes: a fixed block 10, which is T-shaped and fixedly connected to the top of the support rod 2; two baffles 11, which are fixedly connected to the inner wall of the support rod 2 and the fixed block 10; two pressing plates 12, which are slidably connected to the baffles 11 and a first spring 13 is fixedly connected between the bottom of the two pressing plates and the baffles 11; a slide groove 14, which is opened along the track of the support rod 2; a locking member 15, which is slidably connected to the pressing plate 12, and the locking member 15 is located in the slide groove 14 and fixedly connected to the inner wall of the support rod 2; working Rod 16 is located on the support rod 2; two clamps 17 are symmetrically distributed and slide horizontally on both sides of the bottom end of the working rod 16, and the bottom ends of the clamps 17 are wedge-shaped; two second springs 18 are respectively fixedly connected between the clamps 17 and the working rod 16, and when the clamps 17 press down the pressing sheet 12, the contact between the clamps 17 and the fixed block 10 can make the clamps 17 slide along the working rod 16, and when the clamps 17 drop below the fixed block 10, the second springs 18 will push the clamps 17 to hold the fixed block 10 tightly; The trigger group is used to actively drive the two clamping members 17 to slide along the working rod 16.

[0019] like Figure 3 , Figures 5-9 As shown: Provide convenience for the placement and retrieval of fish reefs through the retrieval group; Delivery work: Before launching, the pressing plate 12 is located between the baffles 11. At this time, the baffles 11, the pressing plate 12 and the top of the fixing block 10 are at the same horizontal height, and the pressing plate 12 is located outside the locking member 15. Because the locking member 15 is fixedly connected to the first fixing rod 3, when the locking member 15 is located inside the pressing plate 12, the baffle 11 and the pressing plate 12 will be restricted in position, so that the support rod 2 cannot rotate inside the first fixing rod 3, that is, the fish reef cannot be unfolded at this time. When the fish reef cannot be unfolded, it can ensure that it continues to maintain a plate-like shape during transportation, stacking, etc., to avoid the support rod 2 rotating inside the first fixing rod 3 due to accidental touch. After the fish reef is transported to the designated area, first align the two clamps 17 at the bottom of the working rod 16 with the two pressing plates 12 and push the pressing plates 12 so that the pressing plates 12 can slide along the baffle 11. At this time, the first spring 13 will be compressed. Because the bottom end of the clamp 17 is wedge-shaped, the clamp 17 will slide along the bottom of the working rod 16 and compress the second spring 18. Then the pressing plate 12 will drop relative to the locking member 15. When the pressing plate 12 drops to the limit, the clamp 17 will move to the bottom of the fixed block 10 under the action of the second spring 18 and hold the fixed block 10 tightly. At this time, the working rod 16 and the unexpanded fish reef will become a whole, that is, Figure 9 In the state shown, the clamping member 17 is in the gap between the two baffles 11, and the locking member 15 releases the restriction on the pressing piece 12; Then, the plate-shaped fish reef is directly thrown into the water. At this time, the bottom end of the working rod 16 will also be submerged in the water. When the second fixed rod 4 contacts the bottom of the water, the working rod 16 will be rotated. At this time, the working rod 16 will drive the baffle 11 and the support rod 2 to rotate inside the first fixed rod 3. At this time, the slide 14 will rotate relative to the locking member 15. Then, the fixed end 9 will rotate to the top of b in the a part of the limit groove 8, and the pressing sheet 12 will also rotate below the locking member 15. Then, the support rod 2 will slide down along the bottom rod 1 to the bottom along with the fixed end 9 when it descends inside b. At this time, the upper frame 5, the middle frame 6 and the lower frame 7 will unfold into a rectangle, that is, a fish reef. Then, the working rod 16 is rotated in the opposite direction to rotate the fixed end 9 from the inside of b to the inside of c. Then, the trigger group drives the two clamps 17 to slide to both sides along the bottom of the working rod 16 and compress the second spring 18. At this time, the two clamps 17 will move away from each other while keeping the pressure on the pressing plate 12. When the bottom ends of the clamps 17 move to both sides of the fixed block 10, the working rod 16 is lifted up to be separated from the support rod 2. At this time, the pressing plate 12 will slide up under the elastic action of the first spring 13 and overlap with the locking member 15. At this time, the locking member 15 restricts the pressing plate 12 so that the pressing plate 12 and the support rod 2 cannot rotate, thereby completing the locking of the deployed fish reef; Fish reef retrieval work: Sail the boat above the reef that has been deployed, align the clip 17 at the bottom of the working rod 16 with the pressing piece 12 again and press down on the pressing piece 12. At this time, the clip 17 will lock the fixing block 10 again. Then rotate the working rod 16 to drive the support rod 2 and the fixed end 9 to rotate. When the fixed end 9 rotates from c to inside b, lift the working rod 16. At this time, the working rod 16 will complete the ascent of the support rod 2 and the first fixing rod 3 through the clamping of the clip 17 and the fixing block 10, so that the upper frame 5, the middle frame 6, and the lower frame 7 can be folded. When the fixed end 9 slides to the uppermost part of b, rotate the working rod 16 to move the fixed end 9 into the inside of a. At this time, the preliminary fixation after the reef is folded is completed. Then directly pull the support rod 2 upward through the working rod 16, and then complete the separation of the second fixing rod 4 from the bottom of the water. After the reef is pulled onto the boat, the two clips 17 can be separated from the fixing block 10 by triggering the trigger group; The support rod 2 is restricted from rotating by the locking of the locking member 15 and the pressing piece 12, thereby avoiding accidental contact that causes the fixed end 9 to disengage from the uppermost part of the limiting groove 8, and preventing the reef from unfolding before the deployment work, which affects the deployment and transportation work. When taking out the reef, the working rod 16 can fold the reef into a plate shape and then lift it, which is convenient for taking and placing after lifting.

[0020] The trigger group includes a sliding piece 27 and two support rods 19. The sliding piece 27 is slidably connected to the working rod 16. The tops of the two support rods 19 are rotatably connected to the sliding piece 27 together. The bottoms of the two support rods 19 are respectively rotatably connected to the two clips 17.

[0021] As Figure 5 、 Figure 6 and Figure 9 and Figure 10 shown: When it is necessary to release the locking of the clip 17 on the fixing block 10, slide the sliding piece 27 downward. At this time, the two clips 17 will be pushed away from the fixing block 10 through the support rods 19. When the clip 17 is not in contact with the fixing block 10, the working rod 16 can be directly lifted to separate the clip 17 from the fixing block 10.

[0022] A positioning rod 20 is fixedly connected to the fixing block 10, and a positioning hole 21 is opened at the bottom end of the working rod 16.

[0023] A towing rope 22 is fixedly connected to the positioning rod 20, a floating buoy 23 is fixedly connected to the towing rope 22, and a lead hole 24 is fixedly connected to the working rod 16.

[0024] As Figure 1 、 Figure 3 、 Figure 5 、 Figure 6 and Figure 10 shown: Since the fish reef is submerged in water after deployment, the water level is higher than the first fixing rod 3 at this time, which can not delay the navigation on the water surface and facilitate the positioning of the fish reef when it needs to be taken out. The set towing rope 22 and the buoy 23 floating on the water surface can provide an indication of the position of the fish reef. When the fish reef needs to be taken out, the position of the fish reef is determined according to the direction of the buoy 23, and then the lead hole 24 is sleeved on the towing rope 22, and the lead hole 24 is continuously kept in contact with the towing rope 22 when the working rod 16 is inserted into the water. When the working rod 16 moves to the lowest part of the towing rope 22, it will contact the support rod 2. At this time, the alignment hole 21 coincides with the alignment rod 20 according to the touch feeling when holding the working rod 16. At this time, the alignment rod 20 enters the inside of the alignment hole 21 to position the working rod 16, so that the working rod 16 is coaxial with the support rod 2; At this time, the clamping part 17 will contact the baffle 11 or the pressing piece 12. At this time, the working rod 16 can be rotated while pressing down the working rod 16. When the clamping part 17 rotates to coincide with the pressing piece 12, the clamping part 17 will directly press down the pressing piece 12 to make the pressing piece 12 slide down. At this time, the positioning of the clamping part 17 and the pressing piece 12 is completed, and then the working rod 16 can be rotated to make the working end rotate from c to the inside of b and then lifted to complete the folding of the fish reef, and then it can be taken out.

[0025] Perforations 25 and habitat holes 26 are provided on the upper frame 5, the middle frame 6 and the lower frame 7.

[0026] Such as Figure 1 and Figure 2 shown: Through the provided habitat holes 26 and perforations 25, it is convenient for bottom organisms to enter and exit and provides a habitat and hiding place.

[0027] Ecological grass is provided on the side wall of the upper frame 6.

[0028] The ecological grass can be composed of one or more of the prior arts, such as carbon fiber ecological grass or ecological grass in other pre-bonded ways. It can imitate the real ecological environment after the fish reef is put in, and will not be specifically described here.

[0029] The bottom end of the bottom rod 1 is conical.

[0030] Such as Figure 1 shown: The conical bottom rod 1 can be conveniently inserted directly into the bottom of the water and provide a more stable placement position after being put in.

[0031] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. The combined ecological fish reef for benthic habitat restoration in river and lake sand mining areas, including a bottom rod (1), is characterized in that, Also includes: A support rod (2) is located inside the bottom rod (1) and is slidably connected to the bottom rod (1); A first fixing rod (3) embedded outside the support rod (2) and rotatably connected to the support rod (2); A second fixing rod (4) located below the first fixing rod (3) and fixedly connected to the bottom rod (1); Two upper frames (5) are symmetrically distributed on the left and right sides of the first fixing rod (3) and the top ends of both upper frames are rotatably connected to the first fixing rod (3); Two middle frames (6) are respectively rotated at the bottom of the two upper frames (5); Two lower frames (7), the bottom ends of which are rotatably connected to the second fixing rods (4) and the top ends of which are rotatably connected to the two middle frames (6); The limiting groove (8) is U-shaped and is opened along the inner wall of the bottom rod (1); The fixed end (9) is located above the interior of the limiting groove (8) and is fixedly connected to the support rod (2).

2. The combined ecological fish reef for benthic habitat restoration in river and lake sand mining areas according to claim 1, characterized in that, A pick-and-place group is arranged on the support rod (2), and the pick-and-place group comprises: A fixed block (10) is T-shaped and fixedly connected to the top end of the support rod (2); Two baffles (11) are fixedly connected to the inner wall of the support rod (2) and the fixing block (10); Two pressing plates (12) are slidably connected to the baffle plate (11), and a first spring (13) is fixedly connected between the bottom of each pressing plate and the baffle plate (11); A chute (14) is provided along the track of the support rod (2); A locking member (15) is slidably connected to the pressing plate (12), wherein the locking member (15) is located within the sliding groove (14) and is fixedly connected to the inner wall of the support rod (2); A working rod (16) is located above the supporting rod (2); Two clamping members (17) are symmetrically distributed and horizontally slide on both sides of the bottom end of the working rod (16), and the bottom ends of the clamping members (17) are both wedge-shaped; Two second springs (18) are respectively fixedly connected between the clamp (17) and the working rod (16); when the clamp (17) presses down the pressing plate (12), the clamp (17) is in contact with the fixed block (10) so that the clamp (17) can slide along the working rod (16); after the clamp (17) drops below the fixed block (10), the second spring (18) pushes the clamp (17) to hold the fixed block (10) tightly; The trigger group is used to actively drive the two clamping members (17) to slide along the working rod (16).

3. The modular ecological fish reef for benthic habitat restoration in river and lake sand mining areas according to claim 2, characterized in that: The trigger group comprises a slide (27) and two support rods (19), wherein the slide (27) is slidably connected to the working rod (16), the top ends of the two support rods (19) are rotatably connected to the slide (27), and the bottom ends of the two support rods (19) are rotatably connected to the two clamps (17).

4. The combined ecological fish reef for benthic habitat restoration in river and lake sand mining areas according to claim 1, characterized in that: An alignment rod (20) is fixedly connected to the fixed block (10), and an alignment hole (21) is provided at the bottom end of the working rod (16).

5. The modular ecological fish reef for benthic habitat restoration in river and lake sand mining areas according to claim 4, characterized in that: A traction rope (22) is fixedly connected to the alignment rod (20), a buoy (23) is fixedly connected to the traction rope (22), and a lead-in hole (24) is fixedly connected to the working rod (16).

6. The combined ecological fish reef for benthic habitat restoration in river and lake sand mining areas according to claim 1, characterized in that: The upper frame (5), the middle frame (6) and the lower frame (7) are all provided with perforations (25) and resting holes (26).

7. The modular ecological fish reef for benthic habitat restoration in river and lake sand mining areas according to claim 6, characterized in that: An ecological grass is provided on the side wall of the upper frame (6).

8. The combined ecological fish reef for benthic habitat restoration in river and lake sand mining areas according to claim 1, wherein: The bottom end of the bottom rod (1) is conical.

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