CN210143612U - Frame type flexible trawl net expanding device - Google Patents
Frame type flexible trawl net expanding device Download PDFInfo
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- CN210143612U CN210143612U CN201920508193.XU CN201920508193U CN210143612U CN 210143612 U CN210143612 U CN 210143612U CN 201920508193 U CN201920508193 U CN 201920508193U CN 210143612 U CN210143612 U CN 210143612U
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- frame
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- trawl
- rigid frame
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000013013 elastic material Substances 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000007790 scraping Methods 0.000 abstract description 15
- 239000000463 material Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 241001233242 Lontra Species 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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Abstract
The utility model relates to a device field is catched in the ocean, especially relates to a flexible trawl net extension fixture of frame-type. The screen plate comprises a rigid frame, wherein the rigid frame is hexahedral, flexible screen plates are laid on the left frame and the right frame of the rigid frame, a water flow channel is formed by a channel between the front frame and the rear frame of the rigid frame, and in the left frame or the right frame of the rigid frame: the rigid frame comprises a front bent frame and a back straight frame, and the flexible screen plates laid on the front bent frame and the flexible screen plates laid on the back straight frame are distributed in a streamline mode together. The utility model discloses a method of rigid material and flexible material combination, the flexible material quality is light, can alleviate whole weight, and the resistance is little when dragging the operation, easy and simple to handle, has can oil consumption reduction and alleviate characteristics such as intensity of labour, reduces labour cost, and the scraping condition to the seabed can be alleviated in whole quality reduction simultaneously.
Description
Technical Field
The utility model relates to a device field is catched in the ocean, especially relates to a flexible trawl net extension fixture of frame-type.
Background
China is a big ocean country, and the ocean fishery is a traditional ocean basic industry and plays an important role in ocean economy. Trawl fishing is an important production operation mode in marine fishery production in China, and in trawl operation, in order to increase the sea sweeping area of trawl operation, the trawl fishing mainly improves the technology of a transverse and vertical expansion device of a net mouth.
When the trawl is in operation at present, the transverse expansion of a net port depends on the rigid net plate, and the rigid net plate is large in size, heavy to operate, high in oil consumption, large in manpower required during folding and unfolding, and also accompanied with certain dangerousness, and causes serious ecological damage and severe fouling to the seabed due to scraping when the trawl is dragged.
As disclosed in chinese patent application publication No. CN 108347910 a, published as 2018.07.31, entitled "airfoil shaped trawl door", a hollow trawl door having one or more chambers and an airfoil shaped cross section is disclosed, comprising: a first side panel having a curvature forming a rear surface, a second side panel having a curvature forming a front surface, and an upper panel forming a top of the trawl door and a bottom panel forming a bottom of the trawl door, wherein the first and second side panels are connected at a leading edge and a trailing edge of the airfoil cross-section, and wherein the trawl door includes one or more openings to enable water to flow into and out of the trawl door.
The technology still has some problems, such as large volume, heavy operation, more oil consumption, large manpower needed during retraction and storage, certain danger, and possibility of causing ecological damage to seabed scraping during towing.
Disclosure of Invention
Based on the rigidity otter board weight that exists among the prior art is big, the operation is heavy, the oil consumption is many, needs a large amount of manpowers when receiving and releasing, still accompanies certain danger, probably causes ecological destruction to seabed scraping when dragging simultaneously not enough, the utility model provides a flexible trawl extension fixture of frame-type adopts the method of rigid material and flexible material combination, and the flexible material quality is light, can alleviate whole weight, and the resistance is little when dragging the operation, easy and simple to handle, has can reduce the oil consumption and alleviate characteristics such as intensity of labour, reduces labour cost, and whole quality alleviates simultaneously can alleviate the scraping condition to the seabed.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a frame type flexible trawl net expanding device comprises a rigid frame, wherein the rigid frame is hexahedral, flexible net plates are laid on a left frame and a right frame of the rigid frame, a water flow channel is formed by a channel between a front frame and a rear frame of the rigid frame, and in the left frame or the right frame of the rigid frame: the rigid frame comprises a front bent frame and a back straight frame, and the flexible screen plates laid on the front bent frame and the flexible screen plates laid on the back straight frame are distributed in a streamline mode together.
The left frame and the right frame are in streamline design, resistance of the expansion device during underwater dragging operation can be greatly reduced according to the fluid dynamics principle, the lift-drag ratio is increased, internal and external pressure difference is formed during dragging operation to generate transverse expansion force, so that a net opening is transversely expanded, and compared with a traditional rigid net plate, the left frame and the right frame increase the stress area in the expansion direction and increase the transverse expansion force; in addition, the rigid frame keeps the streamline structural shape and hydrodynamic characteristics, avoids the flexible screen plate from generating vortex due to easy deformation, has the advantage of reducing water resistance, has light weight, small resistance in dragging operation, is simple and convenient to operate, has the characteristics of reducing oil consumption, reducing labor intensity and the like, reduces labor cost, reduces the overall quality and can also reduce the scraping degree to the seabed.
Preferably, the ratio of the length of the front curved frame to the length of the rear straight frame is 0.7 to 1.2. Compared with the full bending of the left frame or the right frame, the resistance can be greatly reduced, and the energy consumption is reduced.
Preferably, the flexible mesh plate is made of canvas to provide a sufficient bearing surface in the transverse expansion direction. The water permeability of the canvas is poor, and a sufficient stress surface in the transverse expansion direction can be provided.
Preferably, the upper frame and the lower frame of the rigid frame are respectively provided with a flexible mesh plate. Controlling the water flow to flow at the left frame or the right frame.
Preferably, the lower end of the rigid frame is provided with an anti-collision device, the anti-collision device comprises a sling, the lower end of the sling is provided with a ball seat, and an anti-collision ball is arranged in the ball seat in a rolling mode. The anti-collision ball can roll on the seabed, so that scraping with the seabed is further reduced, and the seabed ecology is protected.
Preferably, the anti-collision ball is made of an elastic material. The anti-collision ball is made of elastic materials such as rubber, and can reduce collision and scraping to the seabed.
Preferably, the number of the anti-collision devices is 4, and the four anti-collision devices are respectively positioned at four corners of the lower frame of the rigid frame. The 4 anti-collision devices uniformly relieve the scraping to the seabed and are stressed uniformly.
The utility model has the advantages that: 1) the rigid frame keeps the streamline structural shape and hydrodynamic characteristics, avoids vortex generation caused by easy deformation of the flexible screen plate, has the advantage of reduced water resistance, has light weight, small resistance in dragging operation, is simple and convenient to operate, has the characteristics of reducing oil consumption, labor intensity and the like, reduces labor cost, reduces the overall quality and can also reduce the scraping degree to the seabed; 2) the anti-collision ball can roll on the seabed, and scraping on the seabed is further relieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the following drawings without inventive work.
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is an exploded view of the rigid frame of the present invention.
Reference numerals: the anti-collision net plate comprises a rigid frame 1, an upper frame 11, a lower frame 12, a left frame 13, a right frame 14, a front frame 15, a rear frame 16, a front bent frame 17, a rear straight frame 18, a flexible net plate 2, a water flow channel 3, a sling 4, a ball seat 5 and an anti-collision ball 6.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
A frame-type flexible trawl door expanding device according to an embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1 and 2, a frame-type flexible trawl net expanding device comprises a rigid frame 1, the rigid frame is hexahedron, the upper frame 11, the lower frame 12, the left frame 13 and the right frame 14 of the rigid frame are all provided with flexible net plates 2, the flexible net plates are made of canvas, the canvas has poor water permeability and can provide sufficient stress surfaces in the transverse expanding direction, a water flow channel 3 is formed by a channel between the front frame 15 and the rear frame 16 of the rigid frame, and in the left frame or the right frame of the rigid frame: the rigid frame comprises a front bending frame 17 and a rear straight frame 18, and the flexible screen plates laid on the front bending frame and the flexible screen plates laid on the rear straight frame are distributed in a streamline shape together.
Adopt rigid frame structure, lay flexible canvas, provide the sufficient stress surface of horizontal expansion direction, left side frame and right frame are streamlined design, and streamlined adoption half length is crooked, half length straight line, can great reduction resistance with whole crooked comparison, reduce the power consumption, and left side frame and right frame design suitable interval for left side frame and right frame can all provide lift. The resistance of the expansion device in underwater dragging operation can be greatly reduced according to the fluid dynamics principle, the lift-drag ratio is increased, the pressure difference between the inner side and the outer side is formed in dragging operation, the transverse expansion force is generated, the net opening is transversely expanded, and the left frame and the right frame increase the stress area in the expansion direction and increase the transverse expansion force compared with the traditional rigid net plate.
Specifically, the lower extreme of rigid frame is equipped with buffer stop, and buffer stop includes hoist cable 4, and the lower extreme of hoist cable is equipped with ball seat 5, and the roll is provided with crashproof ball 6 in the ball seat. The anticollision ball adopts the elasticity material to make, and buffer stop's figure is 4, and four buffer stop are located four angles of rigid frame lower frame respectively. The anti-collision ball is made of elastic materials such as rubber and the like, can roll on the seabed, further reduces scraping with the seabed, is uniformly stressed by the 4 anti-collision devices, uniformly relieves scraping on the seabed, and protects seabed ecology.
The utility model has the advantages that: the rigid frame keeps the streamline structural shape and hydrodynamic characteristics, avoids vortex generation caused by easy deformation of the flexible screen plate, has the advantage of reduced water resistance, has light weight, small resistance in dragging operation, is simple and convenient to operate, has the characteristics of reducing oil consumption, labor intensity and the like, reduces labor cost, reduces the overall quality and can also reduce the scraping degree to the seabed; the anti-collision ball can roll on the seabed, and scraping on the seabed is further relieved.
The above is only the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (7)
1. The frame type flexible trawl net expanding device is characterized by comprising a rigid frame, wherein the rigid frame is hexahedral, flexible net plates are laid on a left frame and a right frame of the rigid frame, a water flow channel is formed by a channel between a front frame and a rear frame of the rigid frame, and in the left frame or the right frame of the rigid frame: the rigid frame comprises a front bent frame and a back straight frame, and the flexible screen plates laid on the front bent frame and the flexible screen plates laid on the back straight frame are distributed in a streamline mode together.
2. A frame-type flexible trawl expansion device according to claim 1, wherein the ratio of the length of the front curved frame to the length of the rear straight frame is 0.7-1.2.
3. A frame-type flexible trawl expansion device according to claim 1 or 2, wherein the flexible net is made of canvas to provide a sufficient force bearing surface in the transverse expansion direction.
4. A frame-type flexible trawl door spreading device according to claim 1 or 2, wherein the upper and lower rims of the rigid frame are coated with flexible mesh panels.
5. A frame-type flexible trawl expansion device according to claim 1 or 2, wherein the lower end of the rigid frame is provided with an anti-collision device, the anti-collision device comprises a sling, the lower end of the sling is provided with a ball seat, and an anti-collision ball is arranged in the ball seat in a rolling manner.
6. A frame-type flexible trawl expansion device according to claim 5, wherein the anti-collision ball is made of an elastic material.
7. A frame-type flexible trawl expansion means according to claim 5, wherein the number of the collision preventing means is 4, and four collision preventing means are respectively provided at four corners of the lower frame of the rigid frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920508193.XU CN210143612U (en) | 2019-04-15 | 2019-04-15 | Frame type flexible trawl net expanding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920508193.XU CN210143612U (en) | 2019-04-15 | 2019-04-15 | Frame type flexible trawl net expanding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210143612U true CN210143612U (en) | 2020-03-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920508193.XU Active CN210143612U (en) | 2019-04-15 | 2019-04-15 | Frame type flexible trawl net expanding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210143612U (en) |
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2019
- 2019-04-15 CN CN201920508193.XU patent/CN210143612U/en active Active
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