CN112655666B - A middle and upper layer trawl device - Google Patents

Abstract

The invention discloses a middle-upper layer trawl device, aiming at solving the defects of slow opening speed and retraction phenomenon of the open end of a tuck net of the traditional trawl device. The novel fishing net comprises a net bag and two Y-shaped trawl ropes respectively connected to the left side and the right side of the net bag, wherein the front end of the net bag is open, a plurality of floating blocks are mounted on the upper side edge of the open end of the net bag, a balance weight is mounted on the lower side edge of the open end of the net bag, a plurality of canvases arranged at intervals are connected to the upper side edge of the open end of the net bag, sinking hanging chains are arranged below the canvases, the lower ends of the canvases are connected with the sinking hanging chains, positioning sleeves are mounted on the left side and the right side of the open end of the net bag, adjusting ropes are connected to the two ends of the sinking hanging chains, and the adjusting ropes penetrate out of the front ends of the adjusting ropes after penetrating through the rear ends of the positioning sleeves. The middle-upper layer trawl device can ensure that the open end of the trawl is quickly opened and is not easy to retract after being opened, thereby being beneficial to the capture of aquatic products.

Description

A middle and upper layer trawl device

technical field

The present invention relates to a fishing trawling net, more particularly, it relates to a middle and upper layer trawling device.

Background technique

Trawling is the use of the movement of ships to drag fishing gear forward in the seabed or sea water, forcing the fishing gear to pass through the fish, shrimp, crabs and other fishing objects in the waters into the net bag to achieve the purpose of fishing. The trawl operation is flexible, adaptable, and has high production efficiency. Modern trawling gear can be used not only to fish for fish, but also to fish for cephalopods, shellfish and crustaceans; not only for fishing objects whose habitat depth is only a few meters or tens of meters, but also for fishing with habitat depths of several meters. kilometer deep-sea species. After the trawling gear is lowered into the water, the counterweight on the lower side of the opening end sinks, and the floating ball on the upper side of the opening end floats up, so that the opening is opened, and the aquatic products are trawled into the net as the ship moves forward. Although the opening of the trawl can be opened by the counterweight and the floating ball, the opening speed is slow, and there is a phenomenon of retraction after opening, which is not conducive to the capture of aquatic products.

SUMMARY OF THE INVENTION

In order to overcome the above deficiencies, the present invention provides a middle and upper layer trawl device, which can quickly open the open end of the trawl, and is not easy to retract after opening, which is beneficial to the capture of aquatic products.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: a middle and upper layer trawling device, comprising a net pocket, two Y-shaped trawl ropes connected to the left and right sides of the net pocket respectively, the front end of the net pocket is open, and several Floating block, a counterweight is installed on the lower side of the open end of the net pocket, several canvases arranged at intervals are connected to the upper side of the open end of the net pocket, a sinking chain is arranged under the canvas, the lower end of the canvas is connected with the sinking chain, and the left and right sides of the open end of the net pocket A positioning sleeve is installed on both ends of the sinking chain, both ends of the sinking chain are connected with adjustment ropes, and the adjustment rope passes through the rear end of the positioning sleeve and then passes out from the front end of the adjustment rope.

When the trawling device is in use, the net bag is lowered into the water, the two trawl ropes are connected to the ship, and the end of the adjusting rope is also placed on the ship. The lower side of the open end is sunk so that the open end of the net pocket is opened. The gravity effect of the sinking chain keeps the canvas in a vertical state. As the net pocket moves forward, the canvas is lifted backward to give the net pocket an upward lifting force, which facilitates the quick opening of the net pocket opening and is not easy to retract. As the net bag continues to move forward, the captured aquatic products continue to increase, and the resistance of the net bag continues to increase. At this time, the angle of the canvas can be adjusted by adjusting the rope to reduce the resistance of the net bag. When adjusting, the end of the adjusting rope on the ship is pulled, and the adjusting rope pulls the lower end of the canvas backward, reducing the flow area of the canvas, thereby reducing the resistance of the canvas to the net pocket, and also reducing the pulling of the trawl rope to the net pocket. power. The middle and upper layer trawl device can quickly open the open end of the trawl, and is not easy to retract after opening, which is beneficial to the capture of aquatic products.

Preferably, a mounting seat is connected to the lower side of the open end of the net pocket, a ratchet wheel and a pawl are mounted on the mounting seat, a strut is connected to the ratchet wheel, the end of the strut rod is connected to the upper side of the open end of the net pocket, and ratchet teeth are arranged on the outer wall of the ratchet wheel. , the end of the pawl is inserted between the two ratchets, so that the strut can rotate in one direction from the rear to the front.

With the opening of the net pocket, the strut rotates in one direction from the back to the front with the net pocket, while the strut is connected to the ratchet and can only rotate in one direction, so the strut will not rotate in the opposite direction after it is supported. , that is to say, the position of the net pocket connected with the strut will not retract, and the strut plays a good supporting role on the opening of the net pocket.

Preferably, the mounting seat is rotated to install the gear, the mounting seat is provided with a sliding hole arranged in the front and rear directions, a rack is installed in the sliding hole, the rack and the gear are meshed for transmission, the end face of the gear is provided with a positioning groove, and one end of the ratchet is rotated and installed on the In the positioning groove, there are several pawls evenly distributed and installed on the side wall of the positioning groove; a positioning spring is installed between the rear end of the rack and the sliding hole, the rear end of the rack is connected with a pull rope, and the pull rope is connected with the rear end of the net pocket .

After the net bag is lowered into the water, the trawling rope pulls the net bag, so that the net bag is stretched out. During the process of the net bag being stretched forward and backward, the rack is pulled by the pulling rope, so that the rack moves backward, and the rack and the gear mesh with each other. Therefore, the rack drives the gear to rotate in the process of moving, and the pawl mounted on the gear pushes the ratchet wheel to rotate, so that the ratchet wheel further rotates in one direction from the back to the front, and the opening speed of the open end of the net pocket is accelerated.

Preferably, a connecting shaft is installed on the mounting seat, and both the ratchet and the gear are rotatably installed on the connecting shaft. The arrangement of the connecting shaft facilitates the mounting arrangement of the gears and ratchets.

Preferably, the gear is installed on the upper end of the mounting seat, the upper surface of the mounting seat is provided with an escape groove communicating with the sliding hole, and the lower part of the gear is placed in the escape groove and meshes with the rack for transmission. This structural arrangement facilitates the meshing transmission between the rack and the gear.

Preferably, the lower end of the mounting seat has a hemispherical structure. The hemispherical mounting seat has little resistance in the process of moving forward.

Preferably, the counterweight is an iron chain. The iron chain is used as the counterweight, which sinks quickly and facilitates the recycling of the net pocket.

Preferably, the rear end of the positioning sleeve is placed behind the sinking chain. This structural arrangement ensures that the canvas can be flipped back.

Preferably, the upper side of the open end of the net bag is connected with a sliding rope, and the upper end of the canvas is connected with a floating ball, and the floating ball is slidably sleeved on the sliding rope.

When the adjusting rope pulls the canvas, the canvas cannot be turned up completely. At this time, continue to pull one of the adjusting ropes, so that the floating ball slides on the sliding rope. The flow area of the small canvas reduces the resistance of the net pocket.

Compared with the prior art, the present invention has the beneficial effects that the middle and upper trawl devices can quickly open the open end of the trawl, and it is not easy to retract after opening, which is beneficial to the capture of aquatic products.

Description of drawings

Fig. 1 is a kind of structural representation of the present invention;

Fig. 2 is the structural representation of the open end of the net bag of the present invention;

Fig. 3 is the partial enlarged schematic diagram of Fig. 1 of the present invention;

Fig. 4 is the partial enlarged schematic diagram of Fig. 2 of the present invention;

In the picture: 1. Net bag, 2. Trawl rope, 3. Float, 4. Counterweight, 5. Canvas, 6. Sinking chain, 7. Positioning sleeve, 8. Adjusting rope, 9. Mounting seat, 10. Ratchet, 11, pawl, 12, strut, 13, ratchet, 14, gear, 15, sliding hole, 16, rack, 17, positioning groove, 18, positioning spring, 19, pull rope, 20, connecting shaft , 21, avoid the groove, 22, slide rope, 23, float.

Detailed ways

Below by specific embodiment, and in conjunction with accompanying drawing, the technical scheme of the present invention is further described in detail:

Embodiment: a middle and upper layer trawling device (see Figures 1 to 4), comprising a net pocket 1, two Y-shaped trawl ropes 2 connected to the left and right sides of the net pocket, the net pocket is open at the front end, and the upper side of the open end of the net pocket Install a number of floating blocks 3, install a counterweight 4 on the lower side of the open end of the net pocket, and the counterweight is an iron chain. The upper side of the open end of the net pocket is connected with a number of canvases 5 arranged at intervals, and a sinking chain 6 is set under the canvas. The sinking sling is connected, and positioning sleeves 7 are installed on the left and right sides of the open end of the net pocket. The rear end of the positioning sleeve is placed behind the sinking sling. Both ends of the sinking sling are connected to the adjusting rope 8, and the adjusting rope is connected from the rear end of the positioning sleeve. Pass it through the front end of the adjustment rope.

A mounting seat 9 is connected to the lower side of the open end of the net pocket, a ratchet wheel 10 and a pawl 11 are installed on the mounting seat, a strut 12 is connected to the ratchet wheel, and the end of the strut rod is connected to the upper side of the open end of the net pocket. Tooth 13, the end of the pawl is inserted between the two ratchets so that the strut can rotate in one direction from the rear to the front. The mounting seat is rotated to install the gear 14, the mounting seat is provided with a sliding hole 15 arranged in the front and rear directions, a rack 16 is installed in the sliding hole, the rack and the gear are engaged for transmission, a positioning groove 17 is provided on the end surface of the gear, and one end of the ratchet wheel is rotated and installed In the positioning groove, there are several pawls evenly distributed and installed on the side wall of the positioning groove; a positioning spring 18 is installed between the rear end of the rack and the sliding hole, and the rear end of the rack is connected to a pull rope 19, which is connected to the Back of net pocket. A connecting shaft 20 is installed on the mounting seat, and both the ratchet and the gear are rotatably installed on the connecting shaft. The gear is installed on the upper end of the mounting seat, the upper surface of the mounting seat is provided with an escape groove 21 which communicates with the sliding hole, and the lower part of the gear is placed in the escape groove and meshes with the rack for transmission. The lower end of the mounting seat has a hemispherical structure. The upper side of the open end of the net pocket is connected with a sliding rope 22, and the left and right sides of the upper end of the canvas are connected with floating balls 23, and the floating ball is slidably sleeved on the sliding rope.

When the trawling device is in use, the net bag is lowered into the water, the two trawl ropes are connected to the ship, and the end of the adjusting rope is also placed on the ship. The lower side of the open end is sunk so that the open end of the net pocket is opened. With the opening of the net pocket, the strut rotates in one direction from the back to the front with the net pocket, while the strut is connected to the ratchet and can only rotate in one direction, so the strut will not rotate in the opposite direction after it is supported. , that is to say, the position of the net pocket connected with the strut will not retract, and the strut plays a good supporting role on the opening of the net pocket. After the net bag is lowered into the water, the trawling rope pulls the net bag, so that the net bag is stretched out. During the process of the net bag being stretched forward and backward, the rack is pulled by the pulling rope, so that the rack moves backward, and the rack and the gear mesh with each other. Therefore, the rack drives the gear to rotate in the process of moving, and the pawl mounted on the gear pushes the ratchet wheel to rotate, so that the ratchet wheel further rotates in one direction from the back to the front, and the opening speed of the open end of the net pocket is accelerated. The gravity effect of the sinking chain keeps the canvas in a vertical state. As the net pocket moves forward, the canvas is lifted backward to give the net pocket an upward lifting force, which facilitates the quick opening of the net pocket opening and is not easy to retract. As the net bag continues to move forward, the captured aquatic products continue to increase, and the resistance of the net bag continues to increase. At this time, the angle of the canvas can be adjusted by adjusting the rope to reduce the resistance of the net bag. When adjusting, the end of the adjusting rope on the ship is pulled, and the adjusting rope pulls the lower end of the canvas backward, reducing the flow area of the canvas, thereby reducing the resistance of the canvas to the net pocket, and also reducing the pulling of the trawl rope to the net pocket. power. The middle and upper layer trawl device can quickly open the open end of the trawl, and is not easy to retract after opening, which is beneficial to the capture of aquatic products.

The above-mentioned embodiments are only preferred solutions of the present invention, and do not limit the present invention in any form. There are other variations and modifications under the premise of not exceeding the technical solutions recorded in the claims.

Claims (7)

1. A middle and upper layer trawl device is characterized by comprising a net bag and two Y-shaped trawl ropes which are respectively connected to the left side and the right side of the net bag, wherein the front end of the net bag is open, a plurality of floating blocks are installed on the upper side edge of the open end of the net bag, a balance weight is installed on the lower side edge of the open end of the net bag, a plurality of canvases which are arranged at intervals are connected to the upper side edge of the open end of the net bag, sinking hanging chains are arranged below the canvases, the lower ends of the canvases are connected with the sinking hanging chains, positioning sleeves are installed on the left side and the right side of the open end of the net bag, adjusting ropes are connected to the two ends of the sinking hanging chains, and the adjusting ropes penetrate out of the front ends of the adjusting ropes after penetrating through the rear ends of the positioning sleeves; the lower side of the open end of the net bag is connected with an installation seat, a ratchet wheel and a pawl are installed on the installation seat, a support rod is connected to the ratchet wheel, the end part of the support rod is connected with the upper side of the open end of the net bag, ratchets are arranged on the outer wall of the ratchet wheel, and the end part of the pawl is inserted between the two ratchets to enable the support rod to rotate in a single direction from back to front; a gear is rotatably arranged on the mounting seat, sliding holes arranged along the front-back direction are formed in the mounting seat, a rack is arranged in each sliding hole, the rack is in meshing transmission with the gear, a positioning groove is formed in the end face of the gear, one end of a ratchet wheel is rotatably arranged in each positioning groove, and a plurality of pawls are uniformly distributed and are all arranged on the side wall of each positioning groove; and a positioning spring is arranged between the rear end of the rack and the sliding hole, the rear end of the rack is connected with a pull rope, and the pull rope is connected to the rear end of the net bag.

2. The middle and upper trawl apparatus according to claim 1, wherein the mounting base is provided with a connecting shaft, and the ratchet wheel and the gear are rotatably mounted on the connecting shaft.

3. The middle and upper trawl apparatus according to claim 1, wherein the gear is installed at an upper end of the installation base, an avoiding groove communicated with the sliding hole is formed on an upper surface of the installation base, and a lower portion of the gear is placed in the avoiding groove and is engaged with the rack for transmission.

4. The device as claimed in claim 1, wherein the lower end of the mounting base is formed in a hemispherical shape.

5. A mid-upper trawl apparatus according to any one of claims 1 to 4, wherein the counterweight is an iron chain.

6. The trawl apparatus for middle and upper floors as claimed in any one of claims 1 to 4, wherein the rear end of the positioning sleeve is placed behind the sinking sling.

7. The middle and upper layer trawl apparatus according to any one of claims 1 to 4, wherein the upper side of the open end of the net bag is connected with a sliding rope, the upper ends of the canvas are connected with floating balls, and the floating balls are slidably sleeved on the sliding rope.

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