Mechanical fishing device for pond

Abstract

The invention relates to a mechanical fishing device for a pond. A trawl device is arranged at the bottom of a side slope of the pond, and the tail of a walking device is connected with the front portion of the trawl device through a connecting rope; the walking device is provided with two sets of spiral propellers with shafts arranged in an opposite supporting mode, the walking device advances or retreats when the two sets of spiral propellers rotate reversely, and the walking device advances leftwards or rightwards when the two sets of spiral propellers rotate in the same direction. Meanwhile, turning or acceleration can be realized by adjusting the rotating speeds of the two groups of spiral propellers. The trawling device is provided with a floating boat and a counterweight boat which enable the trawling device to suspend in the pond, a first spiral deflection rudder is arranged at the front part of the trawling device, the connecting rope is connected with the outer end of the front spiral deflection rudder, and the first spiral deflection rudder has an inward moving trend in the rotating process and is used for providing an outward component force F for balancing the connecting rope; the tail of the trawl device is connected with the fishing net, so that the whole trawl device can walk along the bank. Therefore, edge-attaching net pulling is achieved, and the net pulling requirements of different shapes of ponds in China are met.

Description

Technical Field

[0001] The present invention relates to a pond mechanized fishing device, belonging to the technical field of pond aquaculture fishing. Background Art

[0002] The capture of adult fish in ponds is an important link in pond fishery aquaculture and also the most labor-consuming factor. Compared with the quantity and scale of the development of China's aquaculture industry, the level of pond aquaculture mechanization and automation is relatively low compared to other industries. More than 90% of the ponds in the country still use the method of manual net pulling operation. Mainly, in the operation of fishing with a dragnet, the fishing net is put into the pond from the shore. Usually, 8 - 12 fishermen (4 - 6 on each side) need to pull the net while stepping on the bottom rope of the net (to prevent fish from escaping under the bottom rope) and pull it towards the opposite shore. When the net is dragged to the other end of the pond, the fishermen at both ends will slowly collect the net and the net sheet respectively, thus narrowing the encirclement and finally catching the fish. Usually, the fishing rate of one net-pulling operation is 30 - 50%. The reasons are that it cannot be guaranteed that the entire net of the fishing net is close to the edge during the net-pulling process, and in addition, there may be a situation where it cannot be pulled during the net-pulling process because the fish are concentrated, making the net too heavy and the manual pulling force too small. Therefore, there are problems such as high labor intensity and low efficiency. The age of pond fishing workers is generally relatively old and there are no successors, and the shortage of labor has occurred from time to time. Moreover, the non-trawl fishing method is difficult to deploy, has low operation efficiency, has high requirements for the fishing pond, and has very few application scenarios. Therefore, there is an urgent need for mechanization to replace the traditional operation method in pond fishing.

[0003] In other non-trawl ponds, fish are usually attracted to a designated area by means of light, sound, laser, electric stimulation, etc., and then fenced with a net. At present, the non-artificial trawl fish collection methods in ponds mainly include the following:

[0004] 1) The pulsed electric fish gathering device drives and gathers fish through a pulsed electric fish driving machine placed in the pond. The pulsed electric fish driving machine is placed at one end of the pond. When the device is started, pulsed electricity is released. The fish in the pond receive the pulsed electric stimulation and escape to the blank area. As the device moves forward continuously, the movement space of the fish is continuously compressed until the fish are driven and concentrated in the catching area, and the operation ends. However, the operation is complex, the fish driving efficiency is not high, and it is less used.

[0005] 2) The inflatable lifting net and the mechanical lifting net. The principles of these two fish collection methods are basically the same. Through stimulation signals such as light and sound, or physiological signals such as feeding, fish are induced to enter the preset lifting net area. When the fish enter this area, the preset surrounding net is lifted out by a mechanical device (such as a simple crane) or an inflatable device, so that the fish are concentrated in the catching area. Then the catching operation can be carried out. The advantage of this method is that the operation range is small, it is convenient to operate, and the arrangement of the catching position is relatively flexible. However, the catching range is limited, the whole pond cannot be caught, and it cannot be widely promoted and applied.

[0006] 3) Mechanized trawl catching device. The trawl catching device is more inclined to replace the manual trawling operation method with equipment, which is also the research direction of this application. The trawler is fixed on the shore, and the customized fishing net is placed in the water and connected through a special mechanism. When the trawler works, it drags the fishing net to carry out trawling operations. At present, this kind of mechanized trawl catching device generally depends on the condition that the pond embankment is very good (the pond embankment must be flat and straight, and even there are rails laid on the pond embankment). Two tractors on both sides of the pond embankment are used to drag the fishing net to carry out trawl catching. However, at present, this non-manual trawling fish collection method does not conform to the national conditions of the pond embankment in our country, so it is rarely used. Moreover, the fishing efficiency is only about 10%-20%, the environmental requirements are high, the application scenarios are limited, and it cannot be applied on a large scale.

[0007] Reference to the prior art:

[0008] [1] Jiang Tao, et al. Design and test of a mechanical trawl fishing system for fish ponds [J]. Fishery Modernization, 2011, 27, 10: 68-72.

[0009] [2] Tang Rong, et al. A method for manufacturing an anti-drilling mud bottom rope and a trawl for a pond trawl fishing net [P]. Patent Publication No. CN217564633U, Publication Date: October 14, 2022. Summary of the Invention

[0010] The object of the present invention is to solve the problem of multi-terrain walking of pond fishing devices; adapt to complex terrains such as the softness and hardness of different pond embankments and the height inequality of the embankments, have strong terrain adaptability, and at the same time, the fishing net can be pulled along the edge to achieve stable and efficient fishing walking operations.

[0011] The present invention adopts the following technical solutions:

[0012] A pond mechanized fishing device, including a walking device 1, a connecting rope 2, a trawl device 3, and a fishing net 4; the walking device 1 is arranged on the shore or the pond embankment on both sides of the pond; the trawl device 3 is arranged at the bottom of the pond slope, and the tail of the walking device 1 is connected to the front of the trawl device 3 through the connecting rope 2; the walking device 1 has two sets of axially opposed screw propellers 101. When the two sets of screw propellers 101 rotate in opposite directions, the walking device 1 moves forward or backward. When the two sets of screw propellers 101 rotate in the same direction, the walking device 1 moves left or right; the trawl device 3 has a floating boat 302 and a counterweight boat 303 that make it float in the pond. A first spiral deflecting rudder 304 is arranged at the front of the trawl device 3, and the connecting rope 2 is connected to the outer end of the first spiral deflecting rudder 304. During the rotation of the first spiral deflecting rudder 304, there is a tendency to move inward to provide a balance for the outward component force F of the connecting rope 2 on it; the tail of the trawl device 3 is connected to the fishing net 4.

[0013] Preferably, the traveling device 1 includes a fixed bracket 105, on which a DC motor 103, a screw reducer 104, a storage battery 102, a control box 106 and the screw propeller 101 are fixedly arranged.

[0014] Preferably, the trawl device 3 has a bracket body pivotally connected in a parallelogram shape. On both sides of the bracket body, a floating boat 302 and a counterweight boat 303 are respectively fixed. The first screw deflection rudder 304 is fixed to the front side of the bracket body through a pivotally connected connecting rod, and the second screw deflection rudder 304' is fixed to the rear side of the bracket body through a pivotally connected connecting rod. During the rotation of the second screw deflection rudder 304', there is a tendency to move outward, providing a component force to balance the inward traction of the fishing net 4 on it.

[0015] Further, the DC motor 103 drives the worm reducer 104 to reduce the speed, and the reduced speed is 40 - 60 r / min.

[0016] Further, the controller 106 is used to control the forward and reverse rotations of the two screw propellers 101 respectively, so as to realize the forward, backward, left - turn and right - turn of the traveling device.

[0017] Furthermore, a diagonal rod is pivotally connected to the bracket body to limit the maximum deformation degree of the parallelogram.

[0018] Preferably, each group of screw propellers 101 includes two screw propeller monomers, one in the front and the other in the rear.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1) The spiral traveling device can realize traveling on various terrains such as uneven and muddy pond banks. By the forward and reverse rotations of the screw propellers, horizontal and vertical traveling and 360 - degree rotation can be realized. It runs stably and reliably, and the traction force reaches more than 500 kg, meeting the soil quality requirements and traction force requirements of most inland pond banks in China for pond fishing, and solving the problem that most pond banks are uneven and cannot meet the requirements of pond mechanized fishing.

[0021] 2) The wireless control system of the fishing traveling device can realize steering, backward movement and speed regulation by adjusting the motor speed and steering, so as to realize the free movement of the traveling device and meet the fishing speed requirements of different ponds.

[0022] 3) The shore - side pond trawl device, through the development of floating boats, counterweights and deflection rudders, enables the trawl device to always travel along the water surface of the pond bank, set up the fishing net to realize the mechanized trawling of the pond, and can meet the trawling requirements of all inland ponds including irregular - shaped ones. Description of the Drawings

[0023] Figure 1It is the elevation view of the pond mechanized fishing device of the present invention arranged in the pond.

[0024] Figure 2 It is the partial enlarged view on the left side of 1.

[0025] Figure 3 It is Figure 1 The corresponding top view.

[0026] Figure 4 It is Figure 3 The partial enlarged view on the right side of.

[0027] In the figure, 1. Traveling device, 2. Connecting rope, 3. Trawling device, 4. Fishing net, 101. Screw propeller, 102. Storage battery, 103. DC motor, 104. Worm reducer, 105. Fixed bracket, 106. Control box, 301. Trawling bracket, 302. Floating boat, 303. Counterweight boat, 304. Screw deflection rudder. Detailed implementation mode

[0028] The present invention will be further described below in conjunction with the attached drawings and specific embodiments.

[0029] Refer to Figure 1 , The pond mechanized fishing device includes a traveling device 1, a connecting rope 2, a trawling device 3, and a fishing net 4. The traveling device 1 is arranged on the shore or the pond embankment on both sides of the pond; the trawling device 3 is arranged at the bottom of the pond slope, and the tail of the traveling device 1 is connected to the front of the trawling device 3 through the connecting rope 2.

[0030] Refer to Figure 3-4 , The traveling device 1 has two groups of screw propellers 101 arranged in an axial pair support. When the two groups of screw propellers 101 rotate in opposite directions, the traveling device 1 moves forward or backward. When the two groups of screw propellers 101 rotate in the same direction, the traveling device 1 moves left or right; the trawling device 3 has a floating boat 302 and a counterweight boat 303 that make it float in the pond. A first screw deflection rudder 304 is provided at the front of the trawling device 3. The connecting rope 2 is connected to the outer end of the first screw deflection rudder 304. During the rotation of the first screw deflection rudder 304, there is a tendency to move inward to provide balance for the outward component force F of the connecting rope 2 on it (as Figure 4 ); The tail of the trawling device 3 is connected to the fishing net 4.

[0031] Regarding the principle description of the traveling device 1 moving forward or backward when the two groups of screw propellers rotate in opposite directions, refer to Figure 3-4 :

[0032] The left set of screw propellers 101 rotates counterclockwise. Due to the rotation of the screw propellers, there is a tendency to move to the left, and due to the effect of the screw propulsion, there is a forward propulsion effect. Therefore, the left set of screw propellers 101 simultaneously has a tendency to move to the left and forward; at the same time,

[0033] The right set of screw propellers 101 rotates clockwise. Due to the rotation of the screw propellers, there is a tendency to move to the right, and due to the effect of the screw propulsion, there is a forward propulsion effect. Therefore, the right set of screw propellers 101 simultaneously has a tendency to move to the right and forward;

[0034] Thus, the leftward and rightward tendencies are balanced, and the two sets of screw propellers 101 ultimately only move forward. Continue to refer to Figure 3-4 , the walking device 1 includes a fixed bracket 105, on which a DC motor 103, a screw reducer 104, a storage battery 102, a control box 106 and the screw propellers 101 are fixedly arranged.

[0035] Refer to Figure 4 , the trawl device 3 has a bracket body pivotally connected in a parallelogram. On both sides of the bracket body, the floating boats 302 and the counterweight boats 303 are respectively fixed. The front side of the bracket body is fixedly connected to the first screw deflection rudder 304 through a pivotally connected connecting rod, and the rear side of the bracket body is fixedly connected to the second screw deflection rudder 304' through a pivotally connected connecting rod. During the rotation of the second screw deflection rudder 304', there is a tendency to move outward, providing a component force to balance the inward traction of the fishing net 4 on it.

[0036] In this embodiment, the forward rotation and reverse rotation of the two screw propellers 101 are respectively controlled by the controller 106 to realize the forward, backward, left turn and right turn of the walking device.

[0037] In this embodiment, refer to Figure 4 , an inclined rod is pivotally connected to the bracket body to limit the maximum deformation degree of the parallelogram.

[0038] In this embodiment, refer to Figure 4 , each group of screw propellers 101 includes two screw propeller monomers, one in the front and one in the rear.

[0039] The present invention aims at the problem that the current pond fishing operation completely relies on manpower and has low work efficiency. By analyzing the structural characteristics, traction change law, walking mode during the fishing process and other technical problems of the traditional fishing method, a pond fishing device adapted to multiple terrains and wirelessly controlled is developed. During operation, a set of fishing devices are placed on both sides of the pond, and the fishing net 4 is pulled to perform pond trawling. The walking device 1 walks on the pond embankment, pulling the trawl device 3 on the pond bank, and the trawl device 3 pulls the fishing net 4 through the support frame 301 to perform trawling operations.

[0040] The traveling device 1 mainly consists of 4 sets of screw propellers 101, a storage battery 102, 2 sets of DC motors 103, 2 sets of worm reducers 104, a fixed bracket 105, a controller 106, etc. During operation, the storage battery 102 provides the power source for the whole device. The DC motor 103 drives the worm reducer 104 to reduce the speed, and the speed after reduction is about 40 - 60 r / min. The reducer drives the transmission shaft to drive the screw propellers 101. The forward and reverse rotations of the two screw propellers 101 are controlled respectively through the controller 106 to achieve the forward, backward, left and right turns of the traveling device. The traveling device 1 can replace the manpower in the net-pulling process, reduce the labor intensity and improve the operation efficiency. At the same time, the traveling device 1 will have the advantages of simple structure, low manufacturing cost, large and stable traction force, 360-degree free rotation, stable traveling on various terrains on the pond bank, wireless precise control, etc.

[0041] The trawling device 3 mainly consists of a floating boat 302, a trawling bracket 301, a counterweight boat 303, 2 sets of screw deflectors 304, etc. The traveling device 1 pulls the trawling device 3 to operate. The trawling bracket 301 fixes the floating boat 302, the counterweight 303, and the screw deflectors 304. During operation, the floating boat 302 serves as a trawling platform and travels on the pond bank. The screw deflectors 304 always face the pond water surface and can move freely left and right. When the traveling device 1 drives the trawling device 3 and is about to pull it to the shore, due to the action of the screw deflectors 304, the trawling device 3 deflects towards the water surface to prevent the traveling device 1 from pulling the trawling device 3 onto the shore, so that the whole trawling device 3 can always travel close to the pond bank. The counterweight boat 303 mainly weights the floating boat platform to make the whole device semi-submerge on the water surface. If it is too heavy, it will sink to the bottom and cannot trawl; if it is too light, it will float on the water surface and the rudder cannot play its role, and it is easy to be pulled onto the pond bank.

[0042] Adult fish harvesting is an important link in fishery farming and also the most labor-consuming factor. Harvesting is one of the most labor-intensive production links in pond farming. Currently, trawl fishing is generally used for pond harvesting. For traditional fish aggregation and catching operations, a large number of workers are first required. For large-scale farms covering thousands of mu, just for trawl fishing, the labor and management costs are very high. Secondly, the members of the net-pulling team are generally older, and there are safety hazards in working in the water. Net-pulling is also a "skilled job" that requires experience and skills. Currently, 10 to 12 people are needed for trawl fishing in fish ponds, with high labor intensity and low work efficiency, which brings difficulties to fish pond fishing and is not suitable for the harvesting of large-scale fish ponds. The age of pond fishing workers is generally relatively old and there is a lack of successors, and the shortage of labor has occurred from time to time. Currently, the mechanization rate of pond harvesting is less than 5%, which greatly affects the level of aquaculture machinery rate. Therefore, there is an urgent need for mechanization to replace the traditional operation mode in pond harvesting. The present invention relates to a pond mechanized harvesting device, which can adapt to the shapes and terrains of different fish ponds, realize multi-terrain operation on muddy land, 360-degree free steering and wireless control, and solve the problem that most inland ponds cannot meet the requirements of mechanized harvesting, making a positive contribution to improving the level of pond mechanized harvesting.

[0043] Develop a spiral walking device to achieve multi-terrain walking on the uneven and muddy pond banks. Through the forward and reverse rotation of the screw propeller, horizontal and vertical walking and 360-degree rotation are realized. It runs stably and reliably, and the traction force reaches more than 500 kg, meeting the soil quality requirements and traction force needs of most inland pond banks for pond harvesting in China, and solving the problem that the unevenness of most pond banks cannot meet the requirements of pond mechanized harvesting. It can adapt to the softness and hardness of different pond embankments, the height inequality of the embankments and other complex terrains, has strong terrain adaptability, and realizes stable and efficient harvesting walking operations.

[0044] Develop a wireless control system for the harvesting walking device. By adjusting the motor speed and steering, steering, reversing and speed regulation are realized, and the free walking of the walking device is achieved to meet the harvesting speed requirements of different ponds.

[0045] Develop a shore pond trawl device. Through the research and development of a floating boat, counterweight blocks and a deflection rudder, the trawl device can always walk along the water surface of the pond bank, set up fishing nets to realize mechanized trawling of the pond, and can meet the trawling needs of all inland ponds including irregular shapes.

[0046] Improve the fishing efficiency and quality. Reduce the reliance on manpower through mechanization means, ensure sufficient pulling force of the fishing net during the fishing process, and achieve mechanized trawling. At the same time, the walking device adopts a wireless remote control module, and the fishing device can be made to walk only through wireless remote control, improving the fishing efficiency. Reduce the labor intensity and save labor costs. Replace manual net pulling operations with mechanized fishing devices, relieve the physical burden of fishermen, and solve the problem of labor shortage. Enhance the flexibility and application scope of fishing operations. Enable the fishing device to adapt to ponds of different scales and the fishing requirements of different types of fish, improving the flexibility and applicability of fishing operations.

[0047] The above are the preferred embodiments of the present invention. Those of ordinary skill in the art can also make various transformations or improvements based on this. Without departing from the general concept of the present invention, these transformations or improvements should fall within the scope of protection required by the present invention.

Claims

1. A pond mechanized fishing device, characterized in that: It includes a traveling device (1), a connecting rope (2), a trawling device (3), and a fishing net (4); The traveling device (1) is arranged on the shore or the pond embankment on both sides of the pond; the trawling device (3) is arranged at the bottom part of the pond slope on the side of the pond, and the tail of the traveling device (1) is connected to the front part of the trawling device (3) through the connecting rope (2); The traveling device (1) has two sets of screw propellers (101) arranged in an axisymmetric manner. When the two sets of screw propellers (101) rotate in opposite directions, the traveling device (1) moves forward or backward. When the two sets of screw propellers (101) rotate in the same direction, the traveling device (1) moves left or right; the trawling device (3) has a floating boat (302) and a counterweight boat (303) that suspend it in the pond. A first screw deflection rudder (304) is arranged at the front part of the trawling device (3). The connecting rope (2) is connected to the outer end of the first screw deflection rudder (304). During the rotation of the first screw deflection rudder (304), there is a tendency to move inward, so as to provide a balance for the outward component force F of the connecting rope (2) on it; The tail of the trawling device (3) is connected to the fishing net (4).

2. The pond mechanized fishing device according to claim 1, characterized in that: The traveling device (1) includes a fixed bracket (105), on which a DC motor (103), a screw reducer (104), a storage battery (102), a control box (106), and the screw propeller (101) are fixedly arranged.

3. The pond mechanized fishing device according to claim 1, characterized in that: The trawling device (3) has a bracket body pivotally connected in a parallelogram. The floating boat (302) and the counterweight boat (303) are respectively fixed on both sides of the bracket body. The first screw deflection rudder (304) is fixed on the front side of the bracket body through a pivotally connected connecting rod, and the second screw deflection rudder (304') is fixed on the rear side of the bracket body through a pivotally connected connecting rod. During the rotation of the second screw deflection rudder (304'), there is a tendency to move outward, providing a balance for the inward traction component force of the fishing net (4) on it.

4. The pond mechanized fishing device according to claim 2, wherein: The DC motor (103) drives the worm reducer (104) to decelerate, and the decelerated speed is 40 - 60 r / min.

5. The pond mechanized fishing device according to claim 2, characterized in that: The controller (106) is used to control the forward and reverse rotations of the two screw propellers (101) respectively, so as to realize the forward, backward, left turn, and right turn of the traveling device.

6. The pond mechanized fishing device according to claim 3, wherein: An inclined rod is pivotally connected to the bracket body to limit the maximum deformation degree of the parallelogram.

7. The pond mechanized fishing device according to claim 1, characterized in that: Each group of screw propellers (101) includes two screw propeller monomers (101) front and back.

Images