Hydraulic net hauler of gill net fishing boat

Abstract

The invention relates to the technical field of fishing net fishing devices, in particular to a hydraulic net hauler of a gill net fishing boat, which comprises a base, a support column, a mounting cross rod, a transmission case, a hydraulic rod and a controller, wherein the upper end of the support column is connected to the center position of the mounting cross rod, and the lower end is connected with the base; the hydraulic rod and the transmission case are hinged to the front end and the rear end of the installation transverse rod through a front hinge seat and a rear hinge seat respectively, the end, away from the installation transverse rod, of the hydraulic rod is hinged to the end, away from the installation transverse rod, of the transmission case, the hydraulic rod, the transmission case and the installation transverse rod form a triangular structure, and a pressure sensor is arranged between the bottom of the front hinge seat and the installation transverse rod. An upper net hauling wheel and a lower net hauling wheel are rotationally installed at the upper end and the lower end of the right side wall of the transmission box respectively, a gear engaging device and a motor are installed on the left side wall of the transmission box, and the motor drives the upper net hauling wheel and the lower net hauling wheel to rotate. According to the hydraulic net hauler for the gill net fishing boat, the net hauling efficiency and safety are remarkably improved, and meanwhile equipment loss and energy consumption are reduced.

Description

Technical Field

[0001] This invention relates to the field of fishing net hauling equipment, specifically a hydraulic net hauling machine for gillnet fishing boats. Background Technology

[0002] In traditional fishing operations, gillnet haulers are important pieces of machinery used to pull fishing nets out of the water and recover the catch. Currently, most common electric gillnet haulers are driven by a motor with a fixed rotation speed, which drives the hauling wheel through a transmission device to complete the net hauling operation.

[0003] However, this fixed-speed operating mode has significant drawbacks: when the catch is large and heavy, the motor load increases, but the speed remains constant, which may lead to difficulty in pulling the net, or even cause motor overload, overheating, or damage, affecting the equipment's lifespan. Simultaneously, fishermen may not have enough time to process the catch when sorting it due to the excessively fast net hauling speed, affecting operational efficiency. Furthermore, when encountering situations where the net gets caught on the bottom or the catch is too heavy, traditional net hauling machines can only rely on the motor to forcibly pull, resulting in a sharp increase in energy consumption and a high risk of mechanical failure.

[0004] Therefore, there is an urgent need for a new type of net-raising machine to address the shortcomings of traditional equipment. Summary of the Invention

[0005] The purpose of this invention is to provide a hydraulic net-lifting machine for gillnet fishing vessels to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A hydraulic net-hauling machine for gillnet fishing vessels includes a base, a support column, a mounting crossbar, a transmission box, a hydraulic rod, and a controller. The upper end of the support column is connected to the center of the mounting crossbar, and the lower end is connected to the base. The hydraulic rod and the transmission box are hinged to the front and rear ends of the mounting crossbar respectively via a front hinge seat and a rear hinge seat. The end of the hydraulic rod away from the mounting crossbar is hinged to the end of the transmission box away from the mounting crossbar. The hydraulic rod, transmission box, and mounting crossbar form a triangular structure. A pressure sensor is provided between the bottom of the front hinge seat and the mounting crossbar. An upper net-hauling wheel and a lower net-hauling wheel are rotatably mounted on the upper and lower ends of the right side wall of the transmission box, respectively. A stopper and a motor are installed on the left side wall of the transmission box, and the motor drives the upper and lower net-hauling wheels to rotate. The pressure sensor transmits a pressure signal unidirectionally to the controller, and the controller transmits a control signal unidirectionally to the motor.

[0008] Furthermore, the mounting crossbar has a column sleeve at its center, which is rotatably connected to the top of the support column. A locking screw is threaded onto the column sleeve, and the end of the locking screw abuts against the outer surface of the support column.

[0009] Furthermore, the angle between the hydraulic rod and the transmission box when the hydraulic rod is in the fully retracted state is 80-90 degrees.

[0010] Furthermore, the mounting crossbar is made of channel steel.

[0011] Furthermore, the support column is made of hollow galvanized steel pipe.

[0012] Furthermore, a manual net-lifting wheel is rotatably mounted on the bottom of the left side wall of the transmission box.

[0013] Furthermore, the transmission box is equipped with an energy recovery system.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This invention uses a pressure sensor to monitor changes in the weight of the catch in real time and a controller to dynamically adjust the motor speed, achieving intelligent control of the net-hauling process. When the catch is large, the speed automatically decreases to ensure fishermen have sufficient time to sort the catch and avoid delays in processing; when the catch is small, the speed automatically increases to improve operational efficiency. The energy recovery system within the transmission box effectively reduces energy consumption and improves economic efficiency. The combination of the hydraulic rod and the triangular stabilizing structure provides auxiliary power when the load is too high, preventing motor overload damage and energy consumption spikes, and solving the problem of traditional net-hauling machines struggling to handle heavy loads or get snagged on the bottom. This invention significantly improves net-hauling efficiency and safety while reducing equipment wear and energy consumption.

[0016] 2. The crossbar and the column sleeve of this invention are rotatably connected, which makes it convenient to adjust the orientation of the net lifting machine as needed. When adjusting, loosen the locking screw and tighten it again after adjustment.

[0017] 3. The present invention adds a manual net-lifting wheel to the bottom left side of the transmission box, which makes it convenient to manually lift the net in case of equipment damage or power failure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a hydraulic net-lifting machine for a gillnet fishing vessel, viewed from the left side.

[0019] Figure 2 This is a schematic diagram of the structure of a hydraulic net-lifting machine for a gillnet fishing vessel, viewed from the right side.

[0020] Figure 3 A schematic diagram of the main frame structure of a hydraulic net-lifting machine for a gillnet fishing vessel;

[0021] Figure 4 for Figure 3 A magnified view of a section at point K;

[0022] Figure 5 A structural diagram showing the supporting columns and mounting crossbars;

[0023] Figure 6 A schematic diagram of the structure of a hydraulic net-lifting machine for a gillnet fishing vessel, with rotating components, viewed from the left side.

[0024] In the diagram: 1. Base; 2. Support column; 3. Mounting crossbar; 4. Hydraulic rod; 5. Transmission box; 6. Upper lifting wheel; 7. Lower lifting wheel; 8. Motor; 9. Gripper; 10. Manual lifting wheel; 11. Pressure sensor; 12. Front hinge seat; 13. Rear hinge seat; 14. Column sleeve; 15. Locking screw. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1: A hydraulic net-hauling machine for gillnet fishing boats includes a base 1, a support column 2, a mounting crossbar 3, a transmission box 5, a hydraulic rod 4, and a controller. The upper end of the support column 2 is connected to the center of the mounting crossbar 3, and the lower end is connected to the base 1. The hydraulic rod 4 and the transmission box 5 are respectively hinged to the front and rear ends of the mounting crossbar 3 via a front hinge seat 12 and a rear hinge seat 13. The end of the hydraulic rod 4 away from the mounting crossbar 3 is hinged to the end of the transmission box 5 away from the mounting crossbar 3. The hydraulic rod 4, the transmission box 5, and the mounting crossbar 3 form a triangular structure. A pressure sensor 11 is provided between the bottom of the front hinge seat 12 and the mounting crossbar 3. An upper net-hauling wheel 6 and a lower net-hauling wheel 7 are rotatably mounted on the upper and lower ends of the right side wall of the transmission box 5, respectively. A stopper 9 and a motor 8 are installed on the left side wall of the transmission box 5. The motor 8 drives the upper net-hauling wheel 6 and the lower net-hauling wheel 7 to rotate. The pressure sensor 11 transmits a pressure signal unidirectionally to the controller, and the controller transmits a control signal unidirectionally to the motor 8.

[0027] When the hydraulic rod 4 is in the fully retracted state, the angle between it and the transmission box 5 is 80-90 degrees.

[0028] The transmission box 5 is equipped with an energy recovery system.

[0029] Working principle of this embodiment:

[0030] like Figure 1 and Figure 2 As shown, when the net is first lifted, motor 8 starts, driving the upper lifting wheel 6 and lower lifting wheel 7 to rotate via a transmission device. The barbed wire is gradually lifted under the influence of the upper and lower lifting wheels 6 and 7. Figure 3 and Figure 4As shown, during the net hauling process, as the weight of the catch increases, the transmission box 5 experiences a downward pull. Since the hydraulic rod 4, transmission box 5, and mounting crossbar 3 form a triangular structure, this pull causes the front hinge seat 12 to exert pressure on the pressure sensor 11. The pressure sensor 11 monitors the pressure signal transmitted from the front hinge seat 12 in real time and transmits this signal unidirectionally to the controller. Upon receiving the pressure signal, the controller analyzes and processes it according to a preset program. The controller determines the weight of the catch based on the pressure signal transmitted from the pressure sensor 11. When the pressure signal indicates a large catch and significant weight, the controller sends a unidirectional control signal to the motor 8, reducing its speed, thereby reducing the speed of the upper net-hauling wheel 6 and the lower net-hauling wheel 7. This allows fishermen more time to remove and sort the catch from the net, preventing delays in processing due to excessive speed. When the pressure signal indicates a low catch and small weight, the controller sends a control signal to motor 8 to increase its speed, thereby increasing the speed of the upper net-lifting reel 6 and the lower net-lifting reel 7, and improving net-lifting efficiency. The transmission box 5 is equipped with an energy recovery system to reduce energy consumption.

[0031] Traditional electric wire mesh lifting machines mostly operate at a fixed speed. When encountering heavy objects or getting caught on the bottom, they struggle to lift the barbed wire, and energy consumption increases sharply. When the pressure sensor detects that the pressure exceeds the stable value, the hydraulic rod 4 extends to assist in lifting the wire mesh, avoiding the problem of excessive energy consumption caused by the motor forcibly pulling the mesh, and also reducing the risk of equipment damage.

[0032] like Figure 3 As shown, when the hydraulic rod 4 is in the fully retracted state, the angle between it and the transmission box 5 is 80-90 degrees. At this time, the direction of the force exerted by the hydraulic rod 4 is close to perpendicular to the transmission box 5, which is the most labor-saving.

[0033] Example 2: A hydraulic net-lifting machine for gillnet fishing boats, which differs from Example 1 in that a column sleeve 14 is provided at the center of the mounting crossbar 3, the column sleeve 14 is rotatably connected to the top of the support column 2, and a locking screw 15 is threadedly connected to the column sleeve 14, with the end of the locking screw 15 abutting against the outer surface of the support column 2.

[0034] Working principle of this embodiment:

[0035] like Figure 6 As shown, in this embodiment, the horizontal bar 3 and the column sleeve 14 are rotatably connected, which facilitates the adjustment of the orientation of the net lifting machine as needed. When adjusting, loosen the locking screw 15, and tighten it again after adjustment.

[0036] Example 3: A hydraulic net-lifting machine for gillnet fishing boats, which differs from Example 1 in that the mounting crossbar 3 is made of channel steel.

[0037] Support column 2 is made of hollow galvanized steel pipe.

[0038] like Figure 3 As shown, in this embodiment, the mounting crossbar 3 is made of channel steel, which has good strength and bending resistance; the support column 2 mainly bears the vertical pressure and is made of hollow galvanized steel pipe, which meets the load-bearing requirements while saving materials and resisting corrosion.

[0039] Example 4: A hydraulic net-lifting machine for gillnet fishing boats, which differs from Example 1 in that a manual net-lifting wheel 10 is rotatably installed at the bottom of the left side wall of the transmission box 5.

[0040] like Figure 1 As shown, in this embodiment, a manual net-lifting wheel 10 is added to the bottom left side of the transmission box 5 to facilitate manual net lifting in case of equipment damage or power failure.

Claims

1. A hydraulic net-lifting machine for gillnet fishing vessels, characterized in that, Includes a base (1), support column (2), mounting crossbar (3), transmission box (5), hydraulic rod (4), and controller: The upper end of the support column (2) is connected to the center of the mounting crossbar (3), and the lower end is connected to the base (1); The hydraulic rod (4) and the transmission box (5) are respectively hinged to the front and rear ends of the mounting crossbar (3) through the front hinge seat (12) and the rear hinge seat (13). The end of the hydraulic rod (4) away from the mounting crossbar (3) is hinged to the end of the transmission box (5) away from the mounting crossbar (3). The hydraulic rod (4), the transmission box (5) and the mounting crossbar (3) form a triangular structure. A pressure sensor (11) is provided between the bottom of the front hinge seat (12) and the mounting crossbar (3). The upper lifting wheel (6) and the lower lifting wheel (7) are rotatably installed at the upper and lower ends of the right side wall of the transmission box (5), respectively. A gear shifter (9) and a motor (8) are installed on the left side wall of the transmission box (5). The motor (8) drives the upper lifting wheel (6) and the lower lifting wheel (7) to rotate. The pressure sensor (11) transmits pressure signals unidirectionally to the controller, and the controller transmits control signals unidirectionally to the motor (8).

2. The hydraulic net-lifting machine for gillnet fishing vessels according to claim 1, characterized in that: The mounting crossbar (3) has a column sleeve (14) at its center. The column sleeve (14) is rotatably connected to the top of the support column (2). A locking screw (15) is threaded onto the column sleeve (14), and the end of the locking screw (15) abuts against the outer surface of the support column (2).

3. The hydraulic net-lifting machine for gillnet fishing vessels according to claim 1, characterized in that: When the hydraulic rod (4) is in a fully retracted state, the angle between it and the transmission box (5) is 80-90 degrees.

4. The hydraulic net-lifting machine for gillnet fishing vessels according to claim 1, characterized in that: The mounting crossbar (3) is made of channel steel.

5. A hydraulic net-lifting machine for gillnet fishing vessels according to claim 1, characterized in that: The support column (2) is made of hollow galvanized steel pipe.

6. The hydraulic net-lifting machine for gillnet fishing vessels according to claim 1, characterized in that: The bottom of the left side wall of the transmission box (5) is rotatably equipped with a manual net-lifting wheel (10).

7. The hydraulic net-lifting machine for gillnet fishing vessels according to claim 1, characterized in that: The transmission box (5) is equipped with an energy recovery system.

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