CN219698796U - Device is catched to mandarin fish harmless for experiments - Google Patents

Abstract

The utility model discloses a non-damage mandarin fish catching device for experiments, which relates to the technical field of mandarin fish catching and comprises a catching box, a catching unit and a bait unit; the catching box is vertically arranged, and the front end of the catching box is provided with a box door; the fishing unit comprises a fishing opening, a mounting groove, mounting blocks, an anti-escape fishing net, a screw rod, a knob and fixing blocks, wherein the fishing opening is formed in the middle of the left end, the right end and the rear end of the fishing box, the mounting grooves are formed in the two sides of the fishing opening, the anti-escape fishing net is positioned in the fishing box, the fixing blocks are fixedly connected to the inner end of the screw rod, and the fixing blocks correspond to the mounting blocks; the bait unit is arranged inside the fishing box. The mandarin fish is captured by the fishing box with the anti-escape fishing net, the mandarin fish cannot be damaged when being captured, the mandarin fish is arranged in the fishing box, the possibility of damaging the mandarin fish is reduced again, and the bait unit is arranged in the fishing box to put the bait into the fishing box, so that the capturing efficiency of the mandarin fish is improved through the bait.

Description

Device is catched to mandarin fish harmless for experiments

Technical Field

The utility model relates to the technical field of mandarin fish fishing, in particular to a non-damage mandarin fish fishing device for experiments.

Background

The mandarin fish belongs to fishes living in complete fresh water, and is loved to inhabit in water bodies such as rivers, lakes, reservoirs and the like with water plants which are luxuriant and cleaner, and the mandarin fish is easily damaged or dead when being caught by a common net-broadcasting catching method, so that the survival rate of the mandarin fish is reduced;

the utility model discloses a no-damage fish catching device of patent publication No. CN207136003U among the prior art, including connecting wire, wire winding box, handle, backup pad, universal wheel, slide, fixed block and baffle, pulley two is installed to the fixed column upper end, the fixed column right-hand member is fixed with the connecting rod, pulley one is installed to the connecting rod right-hand member, the casing is located the pulley below, wire winding box, pulley two, pulley one and casing are connected through the connecting wire in proper order, the water pump is installed to the casing left end, collecting box and balancing weight are installed to the casing lower extreme, the balancing weight is located the collecting box right side, the water pipe is installed to the water pump right-hand member, the water pipe right-hand member passes the casing to extend to inside the casing, the slide is fixed inside the casing, the slide is located the water pipe right side, the baffle is installed to the collecting box upper end, put on the baffle and install the fixed block, the fixed block right-hand member is fixedly connected with the casing;

when the mandarin fish is caught, the baffle swings to easily damage the mandarin fish, the survival rate of the mandarin fish is reduced, no bait is arranged in the catching device, and the catching efficiency of the mandarin fish is low.

Disclosure of Invention

The technical problem to be solved by the utility model is to overcome the existing defects, and provide the experimental mandarin fish nondestructive fishing device which is provided with the escape-preventing fishing net matched with the fishing box to capture the mandarin fish, so that the mandarin fish cannot be damaged when being captured, the fishing box is internally provided with the net, the possibility of damaging the mandarin fish is reduced again, and the bait unit is additionally arranged to put the bait into the fishing box, so that the mandarin fish capturing efficiency is improved through the bait, and the problems in the background technology can be effectively solved.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the non-damage mandarin fish fishing device for experiment includes fishing box, fishing unit and bait unit;

fishing box: the fishing box is vertically arranged, and the front end of the fishing box is provided with a box door;

and a fishing unit: the fishing box comprises a fishing opening, a mounting groove, mounting blocks, an anti-escape fishing net, screws, knobs and fixing blocks, wherein the fishing opening is formed in the middle of the left end, the right end and the rear end of the fishing box, the mounting grooves are formed in the two sides of the fishing opening, the mounting grooves are movably connected with the mounting blocks, the inner ends of the mounting blocks are fixedly connected with the two sides of the outer ends of the anti-escape fishing net, the anti-escape fishing net is positioned in the fishing box, the left end, the right end and the rear end of the fishing box are in threaded connection with the six screws, the knobs are fixedly connected with the outer ends of the screws, the fixing blocks are fixedly connected with the inner ends of the screws, and the fixing blocks correspond to the mounting blocks;

bait unit: is arranged inside the fishing box.

The fishing net is supported by the fishing box to be placed in the fishing port, the installation block of the anti-escape fishing net is inserted into the installation groove and rotated, the knob drives the screw to rotate when the installation block corresponds to the fixed block, the screw drives the fixed block to move inwards to press the installation block through the threaded connection of the screw and the fishing box, thereby the anti-escape fishing net is installed on the fishing box, the bait is placed in the fishing box through the bait unit, the fishing box is placed in water, the water enters the fishing box through the fishing port, the mandarin fish is lured to enter the fishing box through the anti-escape fishing net, the mandarin fish is prevented from escaping from the fishing box through the anti-escape fishing net, damage is not caused to the mandarin fish, the fishing box is taken out from the water after enough mandarin fish is captured, redundant water flows out from the fishing port, the residual water in the fishing box can enable the mandarin fish to survive, and when the mandarin fish needs to be released, the box door is opened to take out the mandarin fish.

Further, the catching unit further comprises a fixing groove, the outer end of the mounting block is provided with the fixing groove, and the fixing block is clamped with the fixing groove. The screw rod drives the fixed block to move inwards and clamp the fixed block into the fixed slot, and the fixed block is reinforced to be connected with the installation block through the fixed slot, so that the installation and fixation of the escape-preventing fishing net are reinforced.

Further, the bait unit contains roof, urceolus, inner column, release groove, bait groove, draws in the cover, dial the board groove, installation component and spacing subassembly in, the installation mouth has been seted up at the top middle part of catching the case, and the roof passes through installation component and is connected with the installation mouth, the upper end of the lower extreme fixedly connected with urceolus of roof, and the inboard and the inner column sliding connection of urceolus, the release groove has been seted up to the front side equidistant of urceolus, the bait groove has been seted up to the front equidistant of inner column, and the bait groove corresponds with the release groove, the equidistant fixedly connected with in the outside of urceolus draws in the cover, and draws in the cover and be located the top of release groove, dial the board groove has been seted up to the inboard of roof, the upper end fixedly connected with of inner column dials the board, and dials both ends and dials board groove sliding connection, spacing subassembly installs the upper end left side at the roof.

Through roof support urceolus, rotate the shifting plate along shifting plate groove and make the inner column rotate, thereby make bait groove correspond with the release groove, place the bait in the bait groove, reverse rotation shifting plate makes bait groove stagger with the release groove, thereby place the bait between urceolus and the inner column, spacing through spacing subassembly, prevent to place the urceolus and install the interior front inner column rotation of fishing incasement and scatter out the bait, install the roof on the installing port through the installation component, thereby place the bait in the fishing incasement, after putting the fishing incasement into water, rotate the shifting plate and make bait groove correspond with the release groove, the inside upside of bait groove is the inclined plane, thereby scatter into in the aquatic with the bait, draw in spacing through drawing in the cover with the bait, thereby evenly arrange the bait in the urceolus outside, improve the effect of lure of bait.

Further, the installation component contains spout, curb plate, transverse groove, telescopic link, spring, fixture block, draw-in groove, slide and presses the piece, the spout has been seted up to the both sides of installing port, and spout and curb plate swing joint, the inner fixedly connected at the left and right sides of roof of curb plate, and transverse groove has been seted up to the outer end of curb plate, the inner of the inside inner fixedly connected with telescopic link of transverse groove, and the spring cup joints on the telescopic link, the outer fixedly connected with fixture block of telescopic link, the draw-in groove has been seted up at both ends about the inside of spout, and fixture block and draw-in groove joint, the upper end fixedly connected with slide of draw-in groove, and the inside of slide with press piece sliding connection, press the lower extreme and the fixture block contact of piece.

The side plate is used for supporting the top plate, the side plate of the top plate is placed in the sliding groove and rotates, the clamping block is stored in the transverse groove, the telescopic rod and the spring shrink, when the side plate rotates to the end part of the sliding groove, the telescopic rod and the spring stretch to clamp the clamping block into the clamping groove, the pressing block slides upwards along the sliding seat, so that the top plate is mounted on the fishing box, when the top plate needs to be dismounted, the pressing block is pressed to push the clamping block to separate from the clamping groove, the side plate is prevented from being fixed, and the top plate and the outer barrel are conveniently dismounted.

Further, spacing subassembly contains a vertical section of thick bamboo, gag lever post, hold-down spring and spacing groove, the lower extreme of upper end left side fixedly connected with vertical section of thick bamboo of roof, and the upper end middle part and the gag lever post sliding connection of vertical section of thick bamboo, hold-down spring cup joints on the gag lever post, and hold-down spring is located a vertical section of thick bamboo, the spacing groove has been seted up to the upper end left and right sides of dialling the board, and the lower extreme and the spacing groove joint of gag lever post.

Placing the bait in the bait groove, reversely rotating the shifting plate to enable the bait groove to be staggered with the release groove, pulling the limiting rod upwards along the vertical cylinder, contracting the compression spring, loosening the limiting rod when the shifting plate rotates to the position where the limiting rod corresponds to the limiting groove, extending the compression spring to clamp the lower end of the limiting rod into the limiting groove, limiting the shifting plate, preventing the inner column from rotating to release the bait before the outer cylinder is placed and installed in the fishing box, and pulling the limiting rod upwards to separate from the limiting groove when the bait needs to be released, so that the shifting plate can be rotated.

Further, the fishing box further comprises a cloth net, and the inner wall of the fishing box is fixedly connected with the cloth net. The possibility of damaging the mandarin fish is reduced again through net distribution.

Compared with the prior art, the utility model has the beneficial effects that: the non-damage mandarin fish fishing device for experiments has the following advantages:

1. inserting an installation block of the escape-preventing fishing net into the installation groove and rotating, rotating a knob when the installation block corresponds to the fixed block, driving a screw to rotate by the knob, enabling the screw to drive the fixed block to move inwards and be clamped into the fixed groove through threaded connection of the screw and the fishing box, thereby installing the escape-preventing fishing net on the fishing box, and reinforcing the connection of the fixed block and the installation block through the fixed groove to strengthen the installation and fixation of the escape-preventing fishing net;

2. placing the baits in the baits grooves, reversely rotating the shifting plate to enable the baits grooves to be staggered with the release grooves, placing the baits between the outer cylinder and the inner column, mounting the top plate on the mounting port, placing the baits in the fishing box, rotating the shifting plate to enable the baits grooves to correspond to the release grooves after the fishing box is placed in water, scattering the baits into the water, and closing and limiting the baits through the closing cover, so that the baits are uniformly arranged outside the outer cylinder, and the attracting effect of the baits is improved;

3. the mandarin fish is captured by the fishing box with the anti-escape fishing net, the mandarin fish cannot be damaged when being captured, the mandarin fish is arranged in the fishing box, the possibility of damaging the mandarin fish is reduced again, and the bait unit is arranged in the fishing box to put the bait into the fishing box, so that the capturing efficiency of the mandarin fish is improved through the bait.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a partial enlarged structure of the portion A in FIG. 1 according to the present utility model;

FIG. 3 is a schematic view of a partially enlarged structure of the present utility model at B in FIG. 1;

fig. 4 is a schematic view of a partial enlarged structure at C in fig. 1 according to the present utility model.

In the figure: 1 fishing box, 2 box door, 3 fishing unit, 31 fishing mouth, 32 mounting groove, 33 mounting block, 34 anti-escape fishing net, 35 screw rod, 36 knob, 37 fixed block, 38 fixed groove, 4 bait unit, 41 roof, 42 outer cylinder, 43 inner column, 44 release groove, 45 bait groove, 46 folding cover, 47 shifting plate, 48 shifting plate groove, 49 chute, 410 side plate, 411 transverse groove, 412 telescopic rod, 413 spring, 414 fixture block, 415 clamping groove, 416 slide seat, 417 press block, 418 vertical cylinder, 419 limit rod, 420 compression spring, 421 limit groove, 5 cloth net.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present embodiment provides a technical solution: the experimental mandarin fish nondestructive fishing device comprises a fishing box 1, a fishing unit 3 and a bait unit 4;

fishing box 1: the fishing box is vertically arranged, and the front end of the fishing box 1 is provided with a box door 2;

fishing unit 3: the fishing box comprises a fishing opening 31, a mounting groove 32, mounting blocks 33, an anti-escape fishing net 34, screw rods 35, knobs 36 and fixing blocks 37, wherein the middle parts of the left end, the right end and the rear end of the fishing box 1 are provided with the fishing opening 31, the two sides of the fishing opening 31 are provided with the mounting grooves 32, the mounting grooves 32 are movably connected with the mounting blocks 33, the inner ends of the mounting blocks 33 are fixedly connected with the two sides of the outer ends of the anti-escape fishing net 34, the anti-escape fishing net 34 is positioned in the fishing box 1, the left end, the right end and the rear end of the fishing box 1 are in threaded connection with the six screw rods 35, the outer ends of the screw rods 35 are fixedly connected with the knobs 36, the inner ends of the screw rods 35 are fixedly connected with the fixing blocks 37, and the fixing blocks 37 correspond to the mounting blocks 33;

the catching unit 3 further comprises a fixing groove 38, the outer end of the mounting block 33 is provided with the fixing groove 38, and the fixing block 37 is clamped with the fixing groove 38. The screw rod 35 drives the fixed block 37 to move inwards and clamps the fixed block 37 into the fixed groove 38, and the fixed block 37 is connected with the installation block 33 through the fixed groove 38, so that the installation and fixation of the escape-preventing fishing net 34 are enhanced.

Bait unit 4: is arranged inside the fishing box 1; the bait unit 4 comprises a top plate 41, an outer cylinder 42, an inner column 43, a release groove 44, a bait groove 45, a furling cover 46, a pulling plate 47, a pulling plate groove 48, a mounting component and a limiting component, wherein the middle of the top end of the fishing box 1 is provided with a mounting opening, the top plate 41 is connected with the mounting opening through the mounting component, the lower end of the top plate 41 is fixedly connected with the upper end of the outer cylinder 42, the inner side of the outer cylinder 42 is in sliding connection with the inner column 43, the front side of the outer cylinder 42 is provided with the release groove 44 at equal intervals, the front side of the inner column 43 is provided with the bait groove 45 at equal intervals, the bait groove 45 corresponds to the release groove 44, the outer side of the outer cylinder 42 is fixedly connected with the furling cover 46, the furling cover 46 is positioned above the release groove 44, the pulling plate groove 48 is provided with the inner side of the top plate 41, the upper end of the inner column 43 is fixedly connected with the pulling plate 47, the left end and the right end of the pulling plate 47 are in sliding connection with the pulling plate groove 48, and the limiting component is arranged on the left side of the upper end of the top plate 41.

The outer cylinder 42 is supported by the top plate 41, the poking plate 47 is rotated along the poking plate groove 48 to enable the inner column 43 to rotate, so that the bait groove 45 corresponds to the release groove 44, the bait is placed in the bait groove 45, the poking plate 47 is rotated reversely to enable the bait groove 45 to be staggered with the release groove 44, so that the bait is placed between the outer cylinder 42 and the inner column 43, the poking plate 47 is limited by the limiting assembly, the bait is prevented from being scattered by rotation of the inner column 43 before the outer cylinder 42 is placed and installed in the fishing box 1, the top plate 41 is installed on an installation opening by the installation assembly, the bait is placed in the fishing box 1, after the fishing box 1 is placed in water, the poking plate 47 is rotated to enable the bait groove 45 to correspond to the release groove 44, the upper side of the interior of the bait groove 45 is an inclined plane, so that the bait is scattered in the water, the bait is folded and limited by the folding cover 46, and the bait is evenly arranged outside the outer cylinder 42, and the attractive effect of the bait is improved.

The installation component contains spout 49, curb plate 410, cross slot 411, telescopic link 412, spring 413, fixture block 414, draw-in groove 415, slide 416 and according to piece 417, spout 49 has been seted up to the both sides of installing port, and spout 49 and curb plate 410 swing joint, the inner fixed connection of curb plate 410 is at the left and right sides both ends of roof 41, and cross slot 411 has been seted up to the outer end of curb plate 410, the inner fixedly connected with telescopic link 412's of inside in cross slot 411 inner, and spring 413 cup joints on telescopic link 412, the outer fixedly connected with fixture block 414 of telescopic link 412, the draw-in groove 415 has been seted up at the inside left and right sides both ends of spout 49, and fixture block 414 and fixture block 415 joint, the upper end fixedly connected with slide 416 of draw-in groove 415, and the inside and according to piece 417 sliding connection of slide 416, the lower extreme and the fixture block 414 contact.

The side plate 410 of the top plate 41 is placed into the sliding groove 49 and rotated through the side plate 410, the clamping blocks 414 are stored into the transverse grooves 411, the telescopic rods 412 and the springs 413 are contracted, when the side plate 410 rotates to the end part of the sliding groove 49, the telescopic rods 412 and the springs 413 are stretched to clamp the clamping blocks 414 into the clamping grooves 415, the pressing blocks 417 slide upwards along the sliding seat 416, so that the top plate 41 is mounted on the fishing box 1, and when the top plate 41 needs to be dismounted, the pressing blocks 417 are pressed to push the clamping blocks 414 to be separated from the clamping grooves 415, so that the side plate 410 is loose from being fixed, and the top plate 41 and the outer cylinder 42 are conveniently dismounted.

The spacing subassembly contains a vertical section of thick bamboo 418, gag lever post 419, hold-down spring 420 and spacing groove 421, the upper end left side fixedly connected with vertical section of thick bamboo 418 of roof 41, and the upper end middle part and the gag lever post 419 sliding connection of vertical section of thick bamboo 418, hold-down spring 420 cup joints on gag lever post 419, and hold-down spring 420 is located vertical section of thick bamboo 418, and spacing groove 421 has been seted up to the upper end left and right sides of plectrum 47, and the lower extreme and the spacing groove 421 joint of gag lever post 419.

Placing the bait in the bait tank 45, reversely rotating the shifting plate 47 to stagger the bait tank 45 and the release tank 44, pulling the limiting rod 419 upwards along the vertical barrel 418, contracting the compression spring 420, loosening the limiting rod 419 when the shifting plate 47 rotates to the position limiting rod 419 corresponding to the limiting tank 421, elongating the compression spring 420 to clamp the lower end of the limiting rod 419 into the limiting tank 421, limiting the shifting plate 47, preventing the inner column 43 from rotating to scatter the bait before the outer barrel 42 is placed and installed in the fishing box 1, and pulling the limiting rod 419 upwards to separate from the limiting tank 421 when the bait needs to be scattered, so that the shifting plate 47 can be rotated.

The whole equipment is supported by the fishing box 1, the anti-escape fishing net 34 is placed in the fishing opening 31, the mounting block 33 of the anti-escape fishing net 34 is inserted into the mounting groove 32 and rotated, the knob 36 is rotated when the mounting block 33 corresponds to the fixing block 37, the knob 36 drives the screw 35 to rotate, the screw 35 drives the fixing block 37 to move inwards to compress the mounting block 33 through the threaded connection of the screw 35 and the fishing box 1, thereby the anti-escape fishing net 34 is mounted on the fishing box 1, the bait is placed in the fishing box 1 through the bait unit 4, the fishing box 1 is placed in water, the water enters the fishing box 1 through the fishing opening 31, the mandarin fish enters the fishing box 1 through the anti-escape fishing net 34, the mandarin fish can be captured through the anti-escape fishing net 34 to prevent the mandarin fish from escaping from the fishing box 1, damage is not caused to the mandarin fish, the excessive water flows out of the fishing opening 31 after the mandarin fish is captured, the residual water in the fishing box 1 can enable the mandarin fish to survive, and the mandarin fish can be taken out when the box door 2 needs to be opened.

The fishing box further comprises a net 5, and the net 5 is fixedly connected with the inner wall of the fishing box 1. The possibility of damaging the mandarin fish is reduced again through the net 5.

The utility model provides a nondestructive mandarin fish fishing device for experiments, which has the following working principle: the anti-escape fishing net 34 is placed in the catching opening 31, the mounting block 33 of the anti-escape fishing net 34 is inserted into the mounting groove 32 and rotated, the knob 36 rotates when the mounting block 33 corresponds to the fixed block 37, the knob 36 drives the screw rod 35 to rotate, the screw rod 35 drives the fixed block 37 to move inwards and be clamped into the fixed groove 38 through the threaded connection of the screw rod 35 and the catching box 1, the anti-escape fishing net 34 is mounted on the catching box 1, the shifting plate 47 rotates along the shifting plate groove 48 to rotate the inner post 43, the bait groove 45 corresponds to the release groove 44, the bait is placed in the bait groove 45, the shifting plate 47 reversely rotates to stagger the bait groove 45 and the release groove 44, the bait is placed between the outer cylinder 42 and the inner post 43, the limiting rod 419 is pulled upwards along the vertical cylinder 418, the compression spring 420 contracts, the shifting plate 47 rotates until the limiting rod 419 corresponds to the limiting rod 419, the hold-down spring 420 is extended to clamp the lower end of the limiting rod 419 into the limiting groove 421 so as to limit the shifting plate 47, the inner column 43 is prevented from rotating to release the bait before the outer cylinder 42 is placed and installed into the fishing tank 1, the outer cylinder 42 is inserted into the fishing tank 1 from the installation opening, the side plate 410 of the top plate 41 is placed into the sliding groove 49 and rotated, the clamping block 414 is accommodated into the transverse groove 411, the telescopic rod 412 and the spring 413 are contracted, when the side plate 410 is rotated to the end of the sliding groove 49, the telescopic rod 412 and the spring 413 are extended to clamp the clamping block 414 into the clamping groove 415, the block 417 slides upwards along the sliding seat 416 so as to install the top plate 41 on the fishing tank 1, at this time, the bait is placed into the fishing tank 1, the fishing tank 1 is placed into the water through the fishing opening 31, the limiting rod 419 is pulled upwards to be separated from the limiting groove, the shifting plate 47 is rotated to enable the bait groove 45 to correspond to the releasing groove 44, the upper side of the inside of the bait groove 45 is an inclined surface, thereby scatter the bait into water, draw in the cover 46 through and draw in spacing to the bait, thereby evenly arrange the bait in the urceolus 42 outside, lure the mandarin fish through the bait and get into the fishing case 1 through anti-escape fishing net 34, can catch the mandarin fish through anti-escape fishing net 34 and prevent that the mandarin fish from escaping out of fishing case 1, can not cause the damage to the mandarin fish again, reduce the possibility of damaging the mandarin fish through cloth 5 again, will catch case 1 and take out from water after catching enough mandarin fish, unnecessary water flows out from catching mouth 31, the water that remains in the fishing case 1 can make the mandarin fish survive, when needing to pay out the mandarin fish, open chamber door 2 and can take out the mandarin fish, when needing to dismantle roof 41 and packing the bait again, push down according to the piece 417 and promote fixture block 414 and break away from draw-in groove 415, thereby make curb plate 410 lose fixedly, and then conveniently pull down roof 41 and urceolus 42.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims (6)

1. The utility model provides a device is catched to mandarin fish harmless for experiments which characterized in that: comprises a fishing box (1), a fishing unit (3) and a bait unit (4);

fishing case (1): is vertically arranged, and the front end of the catching box (1) is provided with a box door (2);

fishing unit (3): the fishing box comprises a fishing opening (31), mounting grooves (32), mounting blocks (33), an anti-escape fishing net (34), screw rods (35), knobs (36) and fixing blocks (37), wherein the fishing opening (31) is formed in the middle of the left end, the right end and the rear end of the fishing box (1), the mounting grooves (32) are formed in the two sides of the fishing opening (31), the mounting grooves (32) are movably connected with the mounting blocks (33), the inner ends of the mounting blocks (33) are fixedly connected with the two sides of the outer ends of the anti-escape fishing net (34), the anti-escape fishing net (34) is located in the fishing box (1), the left end, the right end and the rear end of the fishing box (1) are in threaded connection with the six screw rods (35), the knobs (36) are fixedly connected with the outer ends of the screw rods (35), the fixing blocks (37) are fixedly connected with the inner ends of the screw rods (35), and the fixing blocks (37) correspond to the mounting blocks (33);

bait unit (4): is arranged inside the catching box (1).

2. The experimental mandarin fish non-destructive fishing device of claim 1, wherein: the catching unit (3) further comprises a fixing groove (38), the outer end of the mounting block (33) is provided with the fixing groove (38), and the fixing block (37) is clamped with the fixing groove (38).

3. The experimental mandarin fish non-destructive fishing device of claim 1, wherein: the bait unit (4) contains roof (41), urceolus (42), interior post (43), release groove (44), bait groove (45), draws in cover (46), dials board (47), dials board groove (48), installation component and spacing subassembly in, install the top middle part of fishing case (1) and offered the mouth, and roof (41) are connected with the installation mouth through installation component, the upper end of lower extreme fixedly connected with urceolus (42) of roof (41), and the inboard and interior post (43) sliding connection of urceolus (42), release groove (44) have been offered to the front side equidistant of urceolus (42), bait groove (45) have been offered to the front side equidistant of interior post (43), and the corresponding with release groove (44) in bait groove (45), the equidistant fixedly connected with in outside of urceolus (42) draws in cover (46), and draws in the top that cover (46) are located release groove (44), dial board groove (48) have been offered to the inboard of roof (41), the upper end connection of interior post (43) has dial board (47) and left side and right side connection board (47), dial board (48) on the upper end of the top of the board (41).

4. A non-invasive mandarin fish catching device for experiment according to claim 3, characterized in that: the installation component contains spout (49), curb plate (410), cross slot (411), telescopic link (412), spring (413), fixture block (414), draw-in groove (415), slide (416) and presses piece (417), spout (49) have been seted up to the both sides of installing port, and spout (49) and curb plate (410) swing joint, the inner fixed connection of curb plate (410) is at the left and right sides both ends of roof (41), and the outer end of curb plate (410) has seted up cross slot (411), the inside inner fixedly connected with telescopic link (412) of cross slot (411) inner, and spring (413) cup joint on telescopic link (412), the outer fixedly connected with fixture block (414) of telescopic link (412), draw-in groove (415) have been seted up at both ends about the inside of spout (49), and fixture block (414) and draw-in groove (415) joint, the upper end fixedly connected with slide (416) and press piece (417) sliding connection, the inside and the block (417) of pressing piece (414) contact.

5. A non-invasive mandarin fish catching device for experiment according to claim 3, characterized in that: the limiting component comprises a vertical barrel (418), a limiting rod (419), a compression spring (420) and a limiting groove (421), wherein the lower end of the vertical barrel (418) is fixedly connected to the left side of the upper end of the top plate (41), the middle of the upper end of the vertical barrel (418) is slidably connected with the limiting rod (419), the compression spring (420) is sleeved on the limiting rod (419), the compression spring (420) is located in the vertical barrel (418), the limiting groove (421) is formed in the left side and the right side of the upper end of the shifting plate (47), and the lower end of the limiting rod (419) is clamped with the limiting groove (421).

6. The experimental mandarin fish non-destructive fishing device of claim 1, wherein: the fishing box further comprises a net (5), and the net (5) is fixedly connected to the inner wall of the fishing box (1).