Shrimp-catching boat for aquaculture

Abstract

The present invention discloses a shrimp-catching boat for aquaculture ponds, which comprises a hull and two thrusters; a thruster mounting seat is respectively arranged at each of the two ends and the tail of the side part of the hull; a chain is arranged around the outside of the hull, and a driving wheel, a tensioning wheel and a plurality of driven wheels are meshed with the chain; the driving wheel is in transmission connection with a motor; the tensioning wheel is connected with an adjusting mechanism for tensioning the chain; a group of shrimp-catching devices are arranged at intervals along the circumferential direction of the chain; the shrimp-catching device comprises a scoop net, a fixing seat and a rotating shaft; the scoop net is hinged to the rotating shaft and can be turned relative to the rotating shaft; the rotating shaft is connected with the fixing seat through a torsion spring; a limiting baffle is respectively arranged on both sides of the chain on the hull; a shrimp box is arranged in the hull corresponding to the position of the shrimp-catching device. The shrimp-catching boat of the present application can achieve continuous and automatic shrimp-catching, has high fishing efficiency, greatly reduces the working intensity of fishermen, and saves the fishing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of aquaculture, and particularly relates to a shrimp-catching boat for aquaculture. Background Art

[0002] Aquaculture is an important industry in coastal areas. Traditional aquaculture mainly relies on manual labor, with high labor intensity and low work efficiency. As the largest county in Zhejiang Province for seawater aquaculture, Sanmen County has a seawater aquaculture area of over 200,000 mu, producing more than 100 kinds of small seafood in five categories including fish, shrimp, shellfish, algae, and crabs. Among them, shrimp is one of the main aquaculture varieties, bringing considerable economic income to farmers. Currently, shrimp farming mainly adopts the method of pond farming; when the cultured shrimp is mature, farmers usually use a cast net or a dip net to catch the shrimp in the pond. When using a cast net for fishing, the fishermen need to evenly place the cast net at the bottom of the pond, with bait placed inside the cast net. After the cast net catches shrimp, the cast net is lifted and sent to the shore for unloading the shrimp, resulting in low fishing efficiency; moreover, the fishing area of the cast net is small, while the area of the pond is large, and a large number of cast nets need to be placed when catching shrimp. The processes of placing the net, retrieving the net, and unloading the shrimp will consume a large amount of manpower, with high labor costs. When using a dip net for fishing, the fishermen will drive the fishing boat to where the shrimp is relatively concentrated, put the dip net into the water and move it. When a relatively large number of shrimp are caught in the dip net, the dip net is lifted and the shrimp is poured into the shrimp basket, repeating this process. The working hours of the fishermen are long and the labor intensity is high. In summary, in the prior art, the mature cultured shrimp is caught manually, which requires a large number of personnel, high labor costs, and heavy workload for the workers. Summary of the Invention

[0003] In order to overcome the above problems existing in the prior art, the present application provides a shrimp-catching boat for aquaculture. The shrimp-catching boat for aquaculture of the present application can achieve continuous and automated shrimp catching through the setting of a chain drive structure and a shrimp-catching device, with high fishing efficiency, greatly reducing the working intensity of the fishermen and saving the fishing cost.

[0004] The technical solution of the present application is: a shrimp fishing boat for aquaculture ponds, comprising a hull and two propellers; a propeller mounting seat is respectively provided at both ends of the side of the hull and the tail; a bracket is respectively provided on both sides of the hull; a chain transmission structure is provided on the outside of the hull; the chain transmission structure comprises a chain arranged around the outside of the hull, and a sprocket engaged with the chain; the sprocket comprises a driving wheel, a tensioning wheel and a plurality of driven wheels; the driving wheel is connected to the motor transmission; the tensioning wheel is connected to the adjustment mechanism for realizing the tensioning of the chain; the driven wheel is sleeved on the rotating shaft and can rotate relative to the rotating shaft, and the rotating shaft is fixed on the bracket; a group of shrimp catching devices are provided on the chain at intervals along the circumferential direction; the shrimp catching device comprises a scoop net, a fixed seat and a rotating shaft; two blocks are provided at intervals at the ends of the rotating shaft; an articulated shaft is connected between the two blocks, Correspondingly, an articulated block is provided at the end of the scoop net; the articulated block is rotatably connected to the articulated shaft; the block is square, and one of its corners is an arc-shaped corner; the end of the block contacts the end face of the scoop net, so that the scoop net can only be flipped in one direction relative to the rotating shaft; the fixed seat is fixed on the chain, and a mounting groove is provided on the top of the fixed seat; a coil spring is provided in the mounting groove, and correspondingly, a pulling block is provided on the outer side face of the rotating shaft; the rotating shaft passes through the through hole in the middle of the coil spring and is inserted into the fixed seat, and can rotate relative to the fixed seat; the fixed seat and the rotating shaft are locked and fixed by fasteners; one end of the coil spring is cooperatively connected with the pulling block, and the other end is fixed on the mounting groove; on the hull, a limit baffle is provided on both sides of the chain, respectively, for limiting the chain; inside the hull, a shrimp frame is provided corresponding to the position of the shrimp catching device.

[0005] Compared with the prior art, the shrimp-catching boat for aquaculture ponds of the present application has a reasonable structural design, can achieve continuous and automated shrimp catching, has a high catching efficiency, greatly reduces the working intensity of the catching personnel, and saves the catching cost. Specifically: (1) A chain is arranged around the outside of the hull, and a set of shrimp-catching devices are arranged at intervals on the chain; during use, the shrimp-catching boat can be driven to a waters area where shrimp are relatively dense, and the motor is started to drive the chain to rotate around the hull. At this time, the shrimp-catching devices will run along with the chain. When the shrimp-catching devices run into the water, they will catch shrimp, and then run above the hull under the drive of the chain and unload the shrimp. In this way, continuous and automated shrimp catching is realized, the catching efficiency is high, and the labor intensity of the staff is greatly reduced. (2) The shrimp-catching device includes a scoop net, a fixed seat and a rotating shaft, and the scoop net is hinged to the rotating shaft, and the rotating shaft is connected to the fixed seat through a torsion spring; when unloading the shrimp, the staff can hold the rotating shaft and turn it to make the scoop net face the shrimp box, and then slightly push the scoop net to make it turn over and fall towards the shrimp box. After the shrimp in the scoop net are poured into the shrimp box below, let go (at this time, the rotating shaft will reset under the elastic force of the torsion spring). The operation is labor-saving and the work load is low. (3) The shrimp-catching boat is equipped with two thrusters. When shrimp-catching operations need to be carried out, one thruster is installed on the thruster mounting seat at the front end of the side of the hull, and the other thruster is installed on the thruster mounting seat at the rear end of the side of the hull to realize the lateral driving of the shrimp-catching boat. The setting of the two thrusters can ensure the balance of the shrimp-catching boat when driving and catching shrimp at the same time.

[0006] As an optimization, in the aforementioned shrimp-catching boat for aquaculture ponds, a lever is arranged on the outer side surface of the rotating shaft, and the end of the lever is spherical. Correspondingly, an arc-shaped blocking surface is arranged on one of the limit baffles; a blocking inclined surface is arranged on the other limit baffle. When the shrimp-catching device runs above the hull, when the lever touches the arc-shaped blocking surface, it will deflect under force, driving the rotating shaft to rotate and making the scoop net face the shrimp box; when the scoop net touches the blocking inclined surface, it will deflect under force and make the scoop net fall towards the shrimp box; thus, when unloading the shrimp, it is no longer necessary for the staff to manually rotate the rotating shaft and turn over the scoop net, and the automation degree is high, further reducing the labor intensity of the staff.

[0007] As an optimization, in the aforementioned shrimp-catching boat for aquaculture ponds, the scoop net includes a net pocket and a net rod; the net rod includes a connecting rod and a fixed rod that are detachably connected; the connecting rod is hinged to the rotating shaft; the fixed rod is fixedly connected to the net pocket. Thus, when the shrimp-catching boat is not in use, the scoop net can be disassembled and then stored, reducing the floor area.

[0008] As an optimization, in the aforementioned shrimp fishing boat for aquaculture ponds, the adjustment mechanism includes an adjustment seat, an adjustment screw and an adjustment block; the adjustment seat is arranged on a bracket; a rotating shaft is fixed on the adjustment block, and the tensioning wheel is sleeved on the rotating shaft and can rotate relative to the rotating shaft; one end of the adjustment screw is provided with an adjustment wheel, and the other end passes through a threaded hole on the adjustment seat and is fixedly connected to the adjustment block. At this time, the adjustment block can be driven to move up and down by rotating the wheel to drive the movement of the tensioning wheel to achieve the tensioning of the chain, which has a simple structure and is easy to operate.

[0009] As an optimization, in the aforementioned shrimp fishing boat for aquaculture ponds, the fixing seat includes a mounting base and a shaft sleeve; the mounting base is in an inverted U shape, and the two side plates are respectively fixedly connected to the two ends of the chain roller; the rotating shaft is inserted into the shaft sleeve. In this case, the assembly is convenient and easy to implement.

[0010] As an optimization, in the aforementioned shrimp fishing boat for aquaculture ponds, the fastener includes a limit frame and a limit pin; the limit frame is fixed to the outer side of the sleeve; one end of the limit pin passes through the limit frame, and the other end passes through the through hole on the sleeve and is inserted into the limit groove on the rotating shaft to form a limit; the limit groove is a quarter arc; a limit plate is provided on the limit pin, and the limit plate is located on the outer side of the sleeve; a spring is connected between the limit plate and the inner wall of the limit frame, and the spring sleeve is arranged on the limit pin. When the rotating shaft is inserted into the sleeve, its end will hit the end of the limit pin, pushing the limit pin to move outward, thereby squeezing the spring, so that during the insertion of the rotating shaft, the end of the limit pin will always contact the outer side of the rotating shaft until it hits the limit groove on the rotating shaft, and the limit pin will reset and snap into the limit groove under the action of the spring elastic force, realizing the limit of the rotating shaft and the sleeve, and the assembly is very convenient.

[0011] As an optimization, in the aforementioned shrimp fishing boat for aquaculture ponds, three sprockets are respectively provided on both sides of the hull, and the three sprockets are distributed in a triangular shape. The triangular structure is relatively stable, so that the chain runs more smoothly.

[0012] As an optimization, in the aforementioned shrimp fishing boat for aquaculture ponds, a driving shaft is fixed on the driving wheel; the driving shaft and the output shaft of the motor are connected through a gear transmission structure; the gear transmission structure includes a driving bevel gear arranged on the output shaft of the motor and a driven bevel gear arranged on the driving shaft; the driving bevel gear is connected to the driven bevel gear through a transmission shaft and a transition bevel gear; the transition bevel gear is arranged on the transmission shaft; the driving shaft and the transmission shaft are respectively connected to the bracket for rotation.

[0013] As an optimization, in the above-mentioned shrimp-catching boat for aquaculture ponds, on the hull, directly below the chain, there is a support plate; on the support plate, a group of support rollers are arranged at intervals; the support rollers are in contact with the lower side of the chain. The support rollers are used to support the chain to prevent the chain from sagging due to gravity when the shrimp-catching device finishes catching shrimp and runs above the hull, affecting the subsequent operation of the chain.

[0014] As an optimization, in the above-mentioned shrimp-catching boat for aquaculture ponds, the shrimp basket is detachably connected to the hull, and handles are provided on both sides of the top of the shrimp basket. After the shrimp basket is filled with shrimp, the shrimp-catching boat can be driven to the shore, the handles on both sides can be grasped, the shrimp basket can be unloaded, and a new shrimp basket can be replaced, which is relatively convenient to operate. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the shrimp-catching boat for aquaculture ponds of the present application;

[0016] Figure 2 is a schematic structural diagram of the hull in the embodiment of the present application;

[0017] Figure 3 is a schematic structural diagram of the baffle in the embodiment of the present application;

[0018] Figure 4 is a schematic diagram of the chain drive structure in the embodiment of the present application;

[0019] Figure 5 is an assembly schematic diagram of the motor and the drive wheel in the present application;

[0020] Figure 6 is a schematic structural diagram of the adjusting mechanism in the embodiment of the present application;

[0021] Figure 7 is a schematic structural diagram of the shrimp-catching device in the embodiment of the present application;

[0022] Figure 8 is an assembly schematic diagram of the fixed seat and the rotating shaft in the present application;

[0023] Figure 9 is a state diagram when the rotating shaft and the fastener are limited in the present application;

[0024] Figure 10 is a schematic structural diagram of the scoop net in the embodiment of the present application;

[0025] Figure 11 is Figure 1 the state diagram when the scoop net of the shrimp-catching boat in

[0026] The reference signs in the drawings are as follows: 1 - hull, 11 - thruster mounting base, 111 - A mounting base, 112 - B mounting base, 113 - C mounting base, 12 - bracket, 13 - rotating shaft, 14 - limit baffle, 15 - support plate; 2 - thruster, 21 - front thruster, 22 - rear thruster; 3 - chain drive structure, 31 - chain, 311 - chain roller, 32 - drive wheel, 321 - drive shaft, 33 - tensioning wheel, 34 - driven wheel; 4 - motor; 5 - adjusting mechanism, 51 - adjusting seat, 52 - adjusting lead screw, 53 - adjusting block, 54 - adjusting rotating wheel; 6 - shrimp catching device, 61 - scoop net, 611 - stop block, 612 - net pocket, 613 - connecting rod, 614 - fixing rod, 62 - fixing base, 621 - mounting base, 622 - bushing, 6201 - mounting groove, 63 - rotating shaft, 631 - stop block, 632 - hinge shaft, 633 - pulling block, 6301 - limiting groove, 64 - torsion spring, 65 - fastener, 651 - limiting frame, 652 - limiting pin, 653 - limiting plate, 654 - spring, 66 - lever; 7 - shrimp box, 71 - handle; 8 - gear drive structure, 81 - driving bevel gear, 82 - driven bevel gear, 83 - transmission shaft, 84 - intermediate bevel gear; 9 - support roller; 10 - fuel generator. Detailed implementation manners

[0027] The present application will be further described below in conjunction with the drawings and embodiments, but it shall not be used as a basis for limiting the present application.

[0028] See Figures 1 to 8The shrimp fishing boat for aquaculture ponds of the present application comprises a hull 1 and two propellers 2 (respectively a front propeller 21 and a rear propeller 22); a propeller mounting seat 11 (respectively an A mounting seat 111, a B mounting seat 112, and a C mounting seat 113) is respectively provided at both ends of the side and the tail of the hull 1; a bracket 12 is respectively provided on both sides of the hull 1; a chain transmission structure 3 is provided on the outside of the hull 1; the chain transmission structure 3 comprises a chain 31 arranged around the outside of the hull 1, and a sprocket engaged with the chain 31; the sprocket comprises a The chain 31 includes a driving wheel 32, a tensioning wheel 33 and a plurality of driven wheels 34; the driving wheel 32 is connected to the motor 4 (the motor 4 is fixed in the hull 1); the tensioning wheel 33 is connected to the adjusting mechanism 5 for realizing the tensioning of the chain 31; the driven wheel 34 is sleeved on the rotating shaft 13 and can rotate relative to the rotating shaft 13, and the rotating shaft 13 is fixed on the bracket 12; a group of shrimp catching devices 6 are arranged at intervals along the circumferential direction on the chain 31; the shrimp catching device 6 includes a scoop net 61, a fixing seat 62 and a rotating shaft 63; two stoppers 631 are arranged at intervals at the ends of the rotating shaft 63 ; A hinge shaft 632 is connected between the two stoppers 631, and correspondingly, a hinge block 611 is provided at the end of the scoop net 61; the hinge block 611 is rotatably connected to the hinge shaft 632; the stopper 631 is square, and one of its corners is an arc angle; the end of the stopper 631 contacts the end face of the scoop net 61, so that the scoop net 61 can only be flipped 90 degrees in one direction relative to the rotation axis 63; the fixed seat 62 is fixed on the chain 31, and a mounting groove 6201 is provided on the top thereof; a coil spring 64 is provided in the mounting groove 6201, and correspondingly, A pull block 633 is provided on the outer side surface of the rotating shaft 63; the rotating shaft 63 passes through the through hole in the middle of the coil spring 64 and is inserted into the fixed seat 62, and can rotate relative to the fixed seat 62; the fixed seat 62 and the rotating shaft 63 are locked and fixed by a fastener 65; one end of the coil spring 64 is connected with the pull block 633, and the other end is fixed to the mounting groove 6201; on the hull 1, a limit baffle 14 is respectively provided on both sides of the chain 31, for limiting the chain 31; in the hull 1, a shrimp frame 7 is provided corresponding to the position of the shrimp catching device 6.

[0029] The propeller 2 and the motor 4 are powered (electrically) by a fuel generator 10. When implementing the present invention, batteries can also be used for power supply, but batteries are restricted in terms of safety and capacity, and are not recommended.

[0030] Example (see Figures 1 to 10 ):

[0031] In this embodiment, four shrimp catching devices 6 are provided.

[0032] In this embodiment, a lever 66 is provided on the outer side surface of the rotating shaft 63, and the end of the lever 66 is spherical. Correspondingly, an arc-shaped blocking surface 141 is provided on one of the limit baffles 14; a blocking inclined surface 142 is provided on the other limit baffle 14, and the blocking inclined surface 142 and the arc-shaped blocking surface 141 are arranged in a staggered manner (see Figure 3 ). During the operation of the chain 31, after the shrimp-catching device 6 moves above the hull 1, when the lever 66 touches the arc-shaped blocking surface 141, it will deflect under force, driving the rotating shaft 63 to rotate so that the scoop net 61 faces the shrimp box 7; as the chain 31 continues to operate, when the scoop net 61 touches the blocking inclined surface 142, it will flip under force and fall towards the shrimp box 7, causing the shrimp in the scoop net 61 to pour into the shrimp box 7 below. During the process from the lever 66 touching the arc-shaped blocking surface 141 to the scoop net 61 touching the blocking inclined surface 142, the end of the lever 66 will contact the inner side surface of the limit baffle 14 (since the end of the lever 66 is spherical, the contact area with the inner side surface of the limit baffle 14 is small, and the friction force can be ignored). Until the shrimp-catching device 6 operates until the lever 66 no longer contacts the inner side surface of the limit baffle 14, the rotating shaft 63 resets under the action of the torsion spring 64; at this time, the scoop net 61 is still in a flipped state until the scoop net 61 enters the water and resets under the action of the water flow pressure.

[0033] See Figure 10 , in this embodiment, the scoop net 61 includes a net pocket 612 and a net rod; the net rod includes a connecting rod 613 and a fixed rod 614; the connecting rod 613 is hinged to the rotating shaft 63; the fixed rod 614 is fixedly connected to the net pocket 612; the connecting rod 613 and the fixed rod 614 are fixedly connected by threading (the connecting rod 613 is provided with a threaded hole, and the fixed rod 614 is provided with a threaded post). Thus, when the shrimp-catching boat is not in use, the scoop net 61 can be disassembled and then stored, reducing the occupied area; and when the net pocket 612 is damaged or dirty, the fixed rod 614 can be unscrewed to replace or clean the net pocket 612.

[0034] See Figure 6 , in this embodiment, the adjusting mechanism 5 includes an adjusting seat 51, an adjusting screw rod 52 and an adjusting block 53; the adjusting seat 51 is arranged above the bracket 12; a rotating shaft 13 is fixed on the adjusting block 53, and the tensioning wheel 33 is sleeved on the rotating shaft 13 and can rotate relative to the rotating shaft 13; one end of the adjusting screw rod 52 is provided with an adjusting wheel 54, and the other end passes through the threaded hole on the adjusting seat 51 and is fixedly connected to the adjusting block 53. When in use, rotate the wheel 54 clockwise or counterclockwise as needed to drive the adjusting block 53 to move up and down, so as to drive the tensioning wheel 33 to move up and down to realize the tensioning of the chain 31.

[0035] In this embodiment, the fixed seat 62 includes a mounting base 621 and a bushing 622; the rotating shaft 63 is inserted into the bushing 622; the mounting base 621 is in an inverted U shape and sleeved on the chain 31, and the two side plates are respectively located on both sides of the chain 31; each side plate is fixedly connected to the end of two chain rollers 311 respectively.

[0036] See Figure 9 , in this embodiment, the fastener 65 includes a limit frame 651 and a limit pin 652; the limit frame 651 is fixed to the outer side surface of the bushing 622; one end of the limit pin 652 passes out of the limit frame 651, and the other end passes through the through hole on the bushing 622 and inserts into the limit groove 6301 on the rotating shaft 63 to form a limit; a limit plate 653 is arranged on the limit pin 652, and the limit plate 653 is located outside the bushing 622; a spring 654 is connected between the limit plate 653 and the inner wall of the limit frame 651, and the spring 654 is sleeved on the limit pin 652; the end of the rotating shaft 63 is provided with a chamfered surface, and the end of the limit pin 652 is spherical. When the rotating shaft 63 is inserted into the bushing 622, its end will touch the end of the limit pin 652 and push the limit pin 652 to move outwards, thereby squeezing the spring 654, so that during the insertion process of the rotating shaft 63, the end of the limit pin 652 will always be in contact with the outer side surface of the rotating shaft 63 (since the end of the limit pin 652 is spherical and the contact area with the outer side surface of the rotating shaft 63 is small, the friction force can be ignored), until it touches the limit groove 6301 on the rotating shaft 63, and the limit pin 63 will be snapped into the limit groove 6301 under the action of the elastic force of the spring 654 to realize the limit of the rotating shaft 63 and the bushing 622. Further, the limit groove 6301 is a quarter circle arc, that is, the rotating shaft 63 can only rotate 90°. When the lever 66 is deflected by force, the limit pin 63 will rotate in the limit groove 6301 and be restricted by the groove wall of the limit groove 6301, so as to avoid over-rotation or under-rotation of the rotating shaft 63 (in the initial state, the lever 66 is not in contact with the limit baffle 14, and the angle between them is 135°; when the lever 66 contacts and is stressed by the arc blocking surface 141, it will drive the rotating shaft 63 to rotate 90°, and when the lever 66 contacts the inner side surface of the limit baffle 14, the angle between them is 45°).

[0037] In this embodiment, three sprockets are respectively arranged on both sides of the hull 1 (including 1 driving wheel 32, one tensioning wheel 33 and 4 driven wheels 34; the driving wheel 32 and the tensioning wheel 33 are located on both sides of the hull 1), and the three sprockets are distributed in a triangle. The triangular structure is relatively stable, so that the chain 31 runs more smoothly.

[0038] In this embodiment, the drive shaft 321 of the drive wheel 32 is drivingly connected to the output shaft of the motor 4 through a gear transmission structure 8. The gear transmission structure 8 includes a driving bevel gear 81 provided on the output shaft of the motor and a driven bevel gear 82 provided on the drive shaft 321. The driving bevel gear 81 is drivingly connected to the driven bevel gear 82 through a transmission shaft 83 and an intermediate bevel gear 84. The intermediate bevel gear 84 is provided on the transmission shaft 83. The drive shaft 321 and the transmission shaft 83 are respectively rotatably connected to the bracket 12.

[0039] In this embodiment, the tensioning wheel 33 and the driven wheel 34 are rotatably connected to the rotating shaft 13 through bearings. The drive shaft 321 and the transmission shaft 83 are rotatably connected to the bracket 12 through bearings. The bearings can be used to support the rotating rotating shaft 13, drive shaft 321 and transmission shaft 83, reduce the friction coefficient during their rotation, and ensure their normal working positions and rotational accuracy.

[0040] In this embodiment, on the hull 1, directly below the chain 31, a support plate 15 is provided. Four support rollers 9 are provided on the support plate 15 at intervals. The support rollers 9 are in contact with the lower side of the chain 31. The support rollers 9 are used to support the chain 31 to prevent the chain 31 from sagging due to gravity when the shrimp-catching device 6 finishes catching shrimp and runs above the hull 1, which affects the subsequent operation of the chain 31. Both sides of the support plate 15 are respectively connected to two limit baffles 14.

[0041] In this embodiment, the shrimp box 7 is detachably connected to the hull 1, and handles 71 are provided on both sides of the top of the shrimp box 7. After the shrimp box 7 is filled with shrimp, the shrimp-catching boat can be driven to the shore, the handles 71 on both sides can be grasped, the shrimp box 7 can be removed, and a new shrimp box 7 can be replaced.

[0042] When the shrimp-catching boat for aquaculture of the present application is in use, two workers are required. One worker is located at the bow position to control the operation of the front thruster 21 and the motor 4. The other worker is located at the stern position to control the operation of the rear thruster 22 and can also put the shrimp leaking into the hull 1 into the shrimp box 7. In the initial state, the front thruster 21 is installed on the A mounting seat 111 at the front end of the side of the hull 1, and the rear thruster 22 is installed on the C mounting seat 113 at the tail of the hull 1 (see Figure 1 ). When the shrimp-catching boat is in use, the rear thruster 22 is started to realize the normal driving of the hull 1 (no shrimp-catching at this time). When the shrimp-catching boat travels to a water area where shrimp are relatively dense, the rear thruster 22 is removed and installed on the B mounting seat 112 at the rear end of the side of the hull 1, and then the front thruster 21 and the rear thruster 22 are started to realize the lateral driving of the hull 1. At the same time, the motor 4 is started for shrimp-catching operation (see Figure 11; Since a thruster 2 is provided at each of the front and rear ends of the hull 1, the balance of the shrimp trawler can be ensured while it is trawling and moving forward.

[0043] The shrimp trawling method of the shrimp trawler for aquaculture is as follows:

[0044] Start the motor 4 to drive the chain 31 to operate and drive the shrimp trawling device 6 to operate. The scoop net 61 enters the water to catch shrimps and moves above the hull 1 driven by the chain 31. When the lever 66 touches the arc-shaped blocking surface 141, it will deflect under force, driving the rotating shaft 63 to rotate so that the scoop net 61 faces the shrimp box 7. As the chain 31 continues to operate, when the scoop net 61 touches the blocking inclined surface 142, it will flip under force, and the scoop net 61 will fall towards the shrimp box 7, and the shrimps in the scoop net 61 will be poured into the shrimp box 7 below.

[0045] The above general description of the invention involved in this application and the description of its specific implementation should not be construed as a limitation on the technical solution of the invention. Those skilled in the art can, based on the disclosure of this application, without departing from the constituent elements of the invention involved, add, subtract or combine the disclosed technical features in the above general description or / and specific implementation (including embodiments) to form other technical solutions within the protection scope of this application.

Claims

1. Shrimp-catching boat for aquaculture ponds, characterized in that: It includes a hull (1) and two thrusters (2); at both ends of the side part and the tail of the hull (1), there is a thruster mounting seat (11) respectively; on both sides of the hull (1), there is a bracket (12) respectively; outside the hull (1), there is a chain drive structure (3); the chain drive structure (3) includes a chain (31) surrounding the outside of the hull (1), and sprockets meshing with the chain (31); the sprockets include a driving wheel (32), a tensioning wheel (33) and a plurality of driven wheels (34); the driving wheel (32) is in transmission connection with a motor (4); the tensioning wheel (33) is connected with an adjusting mechanism (5) for tensioning the chain (31); the driven wheels (34) are sleeved on a rotating shaft (13), can rotate relative to the rotating shaft (13), and the rotating shaft (13) is fixed on the bracket (12); on the chain (31), there is a set of shrimp-catching devices (6) arranged at intervals along the circumferential direction; the shrimp-catching device (6) includes a scoop net (61), a fixed seat (62) and a rotating shaft (63); at the end of the rotating shaft (63), there are two stoppers (631) arranged at intervals; between the two stoppers (631), there is a hinge shaft (632), correspondingly, at the end of the scoop net (61), there is a hinge block (611); the hinge block (611) is rotatably connected with the hinge shaft (632); the stopper (631) is square, and one of its corners is an arc-shaped corner; the end of the stopper (631) is in contact with the end face of the scoop net (61), so that the scoop net (61) can only flip relative to the rotating shaft (63) in one direction; the fixed seat (62) is fixed on the chain (31), and there is an installation groove (6201) on its top; in the installation groove (6201), there is a coil spring (64), correspondingly, on the outer side surface of the rotating shaft (63), there is a pulling block (633); the rotating shaft (63) passes through the through hole in the middle of the coil spring (64) and is inserted into the fixed seat (62), and can rotate relative to the fixed seat (62); the fixed seat (62) and the rotating shaft (63) are locked and fixed by a fastener (65); one end of the coil spring (64) is cooperatively connected with the pulling block (633), and the other end is fixed on the installation groove (6201); on the hull (1), on both sides of the chain (31), there is a limit baffle (14) respectively for limiting the chain (31); inside the hull (1), corresponding to the position of the shrimp-catching device (6), there is a shrimp frame (7).

2. The shrimp-catching boat for aquaculture ponds according to claim 1, wherein: On the outer side surface of the rotating shaft (63), there is a lever (66), and the end of the lever (66) is spherical, correspondingly, on one of the limit baffles (14), there is an arc-shaped blocking surface (141); on the other limit baffle (14), there is a blocking inclined surface (142).

3. The shrimp-catching boat for aquaculture ponds according to claim 1, characterized in that: The scoop net (61) includes a net pocket (612) and a net rod; the net rod includes a connecting rod (613) and a fixed rod (614) which are detachably connected; the hinge block (611) is arranged at the end of the connecting rod (613); the fixed rod (614) is fixedly connected with the net pocket (612).

4. The shrimp-catching boat for aquaculture ponds according to claim 1, wherein: The adjusting mechanism (5) includes an adjusting base (51), an adjusting screw rod (52) and an adjusting block (53); the adjusting base (51) is arranged on the bracket (12); a rotating shaft (13) is fixed on the adjusting block (53), and the tensioning wheel (33) is sleeved on the rotating shaft (13) and can rotate relative to the rotating shaft (13); one end of the adjusting screw rod (52) is provided with an adjusting wheel (54), and the other end passes through the threaded hole on the adjusting base (51) and is fixedly connected with the adjusting block (53).

5. The shrimp-catching boat for aquaculture ponds according to claim 1, characterized in that: The fixed seat (62) includes an installation base (621) and a bushing (622); the installation base (621) is in an inverted U shape, and the two side plates are respectively fixedly connected with the two ends of the chain roller (311); the rotating shaft (63) is inserted into the bushing (622).

6. The shrimp-catching boat for aquaculture ponds according to claim 5, characterized in that: The fastener (65) includes a limit frame (651) and a limit pin (652); the limit frame (651) is fixed on the outer side surface of the bushing (622); one end of the limit pin (652) passes out of the limit frame (651), and the other end passes through the through hole on the bushing (622) and is inserted into the limit groove (6301) on the rotating shaft (63) to form a limit; the limit groove (6301) is a quarter-circular arc; a limit plate (653) is arranged on the limit pin (652), and the limit plate (653) is located on the outer side of the bushing (622); a spring (654) is connected between the limit plate (653) and the inner wall of the limit frame (651), and the spring (654) is sleeved on the limit pin (652).

7. The shrimp-catching boat for aquaculture ponds according to claim 1, characterized in that: Three sprockets are respectively arranged on both sides of the hull (1), and the three sprockets are distributed in a triangle.

8. The shrimp-catching boat for aquaculture ponds according to claim 1, characterized in that: The drive shaft (321) of the drive wheel (32) is in transmission connection with the output shaft of the motor (4) through a gear transmission structure (8). The gear transmission structure (8) includes a driving bevel gear (81) arranged on the output shaft of the motor and a driven bevel gear (82) arranged on the drive shaft (321); the driving bevel gear (81) is in transmission connection with the driven bevel gear (82) through a transmission shaft (83) and an intermediate bevel gear (84); the intermediate bevel gear (84) is arranged on the transmission shaft (83); the drive shaft (321) and the transmission shaft (83) are respectively rotationally connected with the bracket (12).

9. The shrimp-catching boat for aquaculture ponds according to claim 1, characterized in that: On the hull (1), directly below the chain (31), a support plate (15) is provided; a group of support rollers (9) are arranged on the support plate (15) at intervals; the support rollers (9) are in contact with the lower side surface of the chain (31).

10. The shrimp-catching boat for aquaculture ponds according to claim 1, characterized in that: The shrimp box (7) is detachably connected to the hull (1), and handles (71) are arranged on both sides of the top of the shrimp box (7).

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