CN114041448A

CN114041448A - Integrated benthos trawl

Info

Publication number: CN114041448A
Application number: CN202111089907.6A
Authority: CN
Inventors: 郭连军; 张甲波; 王刚; 刘会欣
Original assignee: Eighth Geological Brigade Of Bureau Of Geology And Mineral Resources Of Hebei Province Marine Geological Resources Investigation Center Of Hebei Province
Current assignee: Eighth Geological Brigade Of Bureau Of Geology And Mineral Resources Of Hebei Province Marine Geological Resources Investigation Center Of Hebei Province
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-02-15

Abstract

The invention discloses an integrated benthos trawl, which comprises a traction rope, a balancing weight and a net body, wherein the net body consists of a framework and a rigid net, the rigid net is fixed on the framework to form an integrated net structure, the front end of the net body is provided with a net opening, the net opening is provided with a floater net and a sinker net, the left end and the right end of an opening of the net body are fixedly provided with guide ropes, the other end of each guide rope is fixedly provided with a net plate, each traction rope comprises a first traction rope and a second traction rope, the first traction rope and the second traction rope are respectively connected with the first net plate and the second net plate, the net opening is also provided with a sealing rope, and the rear end part of the net body is provided with a net bag lock and the balancing weight. The trawl is provided with the float net and the sinker net, the net body is provided with the balancing weight, and the net port is provided with the sealing rope, so that benthos inhabiting on the surface of the sea bottom can be effectively collected, and after the collection is finished, the sealing rope can effectively seal the net port to prevent the benthos from escaping, thereby realizing the effective collection.

Description

Integrated benthos trawl

Technical Field

The invention relates to the technical field of marine benthos trappers, in particular to an integrated benthos trawl.

Background

The investigation and research of marine benthos is an important component of basic comprehensive investigation of marine science, and particularly, the number of offshore seabed sediments is increased continuously due to the influence of human activities, so that the composition and biomass of benthos communities living on seabed substrates are seriously influenced; therefore, research and study of marine benthos have been increasingly focused.

At present, a device commonly adopted when marine benthos is collected is an 'Arabic trawl device', in the actual benthos trawl collection process, the Arabic trawl is usually directly hung and tied on an investigation ship through a dragging rope, and the Arabic trawl is dragged by the investigation ship to carry out benthos collection operation. The current attritor trawl apparatus has the following disadvantages when collecting marine benthos: firstly, in the process of dragging the alder trawl device by a ship, the alder trawl device is dragged upwards in an inclined way by a rope, so that the alder trawl device is pulled upwards by the rope, the alder trawl device cannot be well attached to the sea bottom surface and sometimes even separated from the sea bottom surface, and the alder trawl device cannot collect benthos inhabiting on the sea bottom surface or in the bottom mud surface layer; secondly, because the port of the attritor trawl device is always in an open state, the benthos in the attritor trawl device is easily influenced by sea current and water flow in the process of being pulled upwards after the attritor trawl device finishes collection, so that the benthos in the attritor trawl escapes from the port of the attritor trawl device; thirdly, in the process that the ship drags the attritor trawl device, benthic organisms enter the trawl together with the benthic organisms, and benthic sediments are easy to block the meshes of the trawl, so that water flow is difficult to penetrate through the trawl, and the attritor trawl device is difficult to collect more benthic organisms or cause the organisms to escape.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides an integrated benthos trawl.

The technical scheme adopted by the invention for solving the technical problems is as follows: an integrated benthos trawl comprises a traction rope, a balancing weight and a net body, wherein the net body is composed of a framework and a rigid net, the rigid net is fixed on the framework to form an integrated net structure, the net body is of a conical cylindrical structure, a net opening is formed in the front end of the net body, a float net and a sinker net are arranged on the net opening, a plurality of floating balls are arranged on the float net, a plurality of metal rollers are arranged on the sinker net, the net opening is in an open state under the action of the float net and the sinker net, guide ropes are fixedly arranged at the left end and the right end of the opening of the net body and comprise a first net plate and a second net plate, the first guide rope is fixed at the left end of the net opening, the second guide rope is fixed at the right end of the net opening, the net plate comprises the first net plate and the second net plate, the end of the other end of the first guide rope is connected with the first net plate, the end part of the other end of the second guide rope is connected with the second screen plate, the traction rope comprises a first traction rope and a second traction rope, the first traction rope and the second traction rope are respectively connected with the first screen plate and the second screen plate, a sealing rope is further arranged on the net opening, and a net bag lock and a balancing weight are arranged at the rear end part of the net body.

In the integrated benthos trawl, the traction rope and the guide rope are both made of steel wire ropes.

In the integrated benthos trawl, the balancing weight is prepared from galvanized iron blocks.

In the integrated benthos trawl, the sealing rope is buried around the net opening, and the net opening can be tightened by drawing the sealing rope after the net body is towed ashore.

In the integrated benthos trawl, the float net and the sinker net respectively occupy half of the perimeter of the net opening.

Compared with the prior art, the invention has the following advantages and prominent effects:

the trawl has the advantages that the trawl is provided with the float net and the sinker net, the net body is provided with the balancing weight, the net port is provided with the sealing rope, benthonic organisms inhabiting on the surface of the sea bottom can be effectively collected, and after collection is finished, the sealing rope can effectively seal the net port to prevent the benthonic organisms from escaping, so that effective collection is realized.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the present invention.

In the figure, 1, a second traction rope, 2, a second net plate, 3, a second guide rope, 4, a net opening, 5, a rigid net, 6, a net bag lock, 7, a floating ball, 8, a roller, 9, a first guide rope, 10, a first net plate, 11, a first traction rope, 12, a framework, 13, a sealing rope and 14, a balancing weight are arranged.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[ example 1 ]

An integrated benthos trawl comprises a hauling rope, a balancing weight 14 and a net body, wherein the net body is composed of a framework 12 and a rigid net 5, the rigid net 5 is fixed on the framework 12 to form an integrated net structure, the net body is of a conical cylindrical structure, a net opening 4 is formed in the front end of the net body, a float net and a sinker net are arranged on the net opening 4, a plurality of floating balls 7 are arranged on the float net, a plurality of metal rollers 8 are arranged on the sinker net, the net opening 4 is in an opening state under the action of the float net and the sinker net, guiding ropes are fixedly arranged at the left end and the right end of an opening of the net body and comprise a first guiding rope 9 and a second guiding rope 3, the first guiding rope 9 is fixed at the left end of the net opening 4, the second guiding rope 3 is fixed at the right end of the net opening 4, a net plate is fixed at the other end of the guiding rope, the net plate comprises a first net plate 10 and a second net plate 2, the tip of the other end of first direction rope 9 is connected together with first otter board 10, the tip of the other end of second direction rope 3 is connected together with second otter board 2, the haulage rope includes first haulage rope 11 and second haulage rope 1, first haulage rope 11 and second haulage rope 1 are connected with first otter board 10 and second otter board 2 respectively, still be equipped with the mouth of a net rope 13 on the net mouth 4, the rear end of dictyosome is equipped with pocket lock 6 and balancing weight 14.

Furthermore, the traction rope and the guide rope are both made of steel wire ropes.

Further, the weight block 14 is made of galvanized iron blocks.

Furthermore, the closing rope 13 is buried around the net opening 4, and when the net body is pulled ashore, the net opening 4 can be tightened by extracting the closing rope 13.

Furthermore, the float net and the sinker net respectively account for half of the perimeter of the net port 4.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.

Claims

1. The utility model provides an integrated form benthos trawl, includes haulage rope, balancing weight (14) and dictyosome, its characterized in that: the net body is composed of a framework (12) and a rigid net (5), the rigid net (5) is fixed on the framework (12) to form an integrated net structure, the net body is in a conical cylindrical structure, a net opening (4) is arranged at the front end of the net body, a float net and a sinker net are arranged on the net opening (4), a plurality of floating balls (7) are arranged on the float net, a plurality of metal rollers (8) are arranged on the sinker net, the net opening (4) is in an open state under the action of the float net and the sinker net, guide ropes are fixedly arranged at the left end and the right end of the opening of the net body and comprise a first guide rope (9) and a second guide rope (3), the first guide rope (9) is fixed at the left end of the net opening (4), the second guide rope (3) is fixed at the right end of the net opening (4), a net plate is fixed at the other end of the guide ropes and comprises a first net plate (10) and a second net plate (2), the end part of the other end of the first guide rope (9) is connected with the first net plate (10), the end part of the other end of the second guide rope (3) is connected with the second net plate (2), the traction rope comprises a first traction rope (11) and a second traction rope (1), the first traction rope (11) and the second traction rope (1) are respectively connected with the first net plate (10) and the second net plate (2), a sealing rope (13) is further arranged on the net opening (4), and a net bag lock (6) and a balancing weight (14) are arranged at the rear end part of the net body.

2. The integrated benthonic trawl according to claim 1, wherein the towing rope and the guiding rope are made of steel wire ropes.

3. An integrated benthonic trawl according to claim 1, wherein the counterweight (14) is prepared using galvanized iron blocks.

4. An integrated benthonic towing net according to claim 1, wherein the port closing rope (13) is buried around the net port (4), and the net port (4) can be tightened by drawing the port closing rope (13) after the net body is towed ashore.

5. An integrated benthonic towing net according to claim 1, wherein the float and sinker nets each occupy half the circumference of the net mouth (4).