CN104839103A

CN104839103A - Vertical V-surface grid plate

Info

Publication number: CN104839103A
Application number: CN201510261868.1A
Authority: CN
Inventors: 梁振林; 姜昭阳; 邓跃
Original assignee: Shandong University Weihai
Current assignee: Shandong University Weihai
Priority date: 2015-05-21
Filing date: 2015-05-21
Publication date: 2015-08-19
Anticipated expiration: 2035-05-21
Also published as: CN104839103B

Abstract

The invention relates to a vertical V-surface grid plate comprising an upper guide plate, a plurality of V-surface wing plates, a warp reinforcing plate and a lower guide plate. Each V-surface wing plate has a high span-chord ratio and has a receding angle. The V-surface wing plates are disposed at equal intervals between the upper guide plate and the lower guide plate and are arranged backward at equal intervals; the warp reinforcing plate is connected with the V-surface wing plate, forming a grid whole. The vertical V-surface grid plate is suitable for fishing vessels different in total tonnage, is good in extensibility, is higher in hydropower efficiency and meets the needs of surface, middle and bottom trawling operations.

Description

A kind of vertical type curved face V-arrangement grid web plate

Technical field

The invention belongs to sea fishery and fish for technical field of tools, particularly relate to a kind of vertical type curved face V-arrangement grid web plate.

Background technology

The Main Function of trawl board is the horizontal expansion expanding netting gear, and the sea of sweeping increasing trawlnet is amassed, and is the important accessory in single boat trawl fishing operation.Web plate type common in current trawl-net fishing has rectangle, ellipse, V-arrangement, vertical type curved face, vertical type curved face V-arrangement, split etc.Wherein, vertical type curved face V-arrangement web plate adopts the high aspect ratio structural design of certain upper counterangle and receding angle, and feature is that expansionary force is large, and horizontal stability is good, is applicable to middle and bottom layers trawlnet.But owing to being subject to the impact of the weight of web plate own and structure, when carrying out surface trawl operation, being comparatively difficult to ensure that card makes web plate be in target water layer, in addition, needing fishing boat to have higher towing tension and towing speed, be not suitable for middle-size and small-size trawler and use.

Summary of the invention

The object of the present invention is to provide one to be applicable to different gross ton fishing boat to use, spreading performance is good, is applicable to table, middle and bottom layers trawling, the vertical type curved face V-arrangement grid web plate that hydrodynamic efficiency is higher.

Object of the present invention is achieved through the following technical solutions: it is by baffle upper plate, high aspect ratio and there is the V-arrangement curved surface wing plate of receding angle, drag guiding principle stiffener, chin spoiler is formed, it is characterized in that between baffle upper plate and chin spoiler, arrange multiple high aspect ratio and there is the V-arrangement curved surface wing plate of receding angle, equidistantly to arrange backward between each wing plate, arrange drag guiding principle stiffener with each high aspect ratio and the V-arrangement curved surface wing plate with receding angle be connected, overall in grid, baffle upper plate is identical with chin spoiler specification, front end is wedge shape, and the length of wedge shape outer arcuate and the radius of curvature arc with high aspect ratio and outside the upper and lower two ends of V-wing plate with receding angle is identical.

Compared to prior art, remarkable result of the present invention is:

1) a kind of web plate main body of vertical type curved face V-arrangement grid web plate by multiple high aspect ratio and the V-arrangement curved surface wing plate with receding angle form, it is low that this combination can give full play to high aspect ratio structure induced resistance on the one hand, the advantage that expansionary force is large, curved is made in wing plate plate face on the other hand, wing plate back eddy current can be reduced, improve web plate hydrodynamic performance;

2) a kind of web plate main body of vertical type curved face V-arrangement grid web plate by multiple high aspect ratio and the V-arrangement curved surface wing plate with receding angle combine, this structure is except the advantage performance with high aspect ratio web plate, can also play that low aspect ratio web plate mobility is good, operation feature easily, thus horizontal stability when improving web plate operation and restoration;

3) a kind of vertical type curved face V-arrangement grid web plate adopts multiple high aspect ratio and the V-arrangement curved surface wing plate with receding angle is combined into the web plate main body of a low aspect ratio, can make web plate under the condition obtaining equal expansionary force, overall dimension is miniaturized, so both can be suitable for medium and small fishing boat to use, the demand to board spread force when table, middle level water body operation can have been met again;

4) vertical type curved face V-arrangement grid web plate adopts multiple high aspect ratio and the V-arrangement curved surface wing plate with receding angle is combined into the web plate main body of a low aspect ratio, can according to the number of the condition adjustment wing plate of fishing boat, netting gear, receding angle, the upper counterangle, curve form and setting angle to adapt to different trawling needs;

5) a kind of vertical type curved face V-arrangement grid web plate is in operation process, and guide functions is played equally in the gap between grid, can reduce the impact of web plate back eddy current further, improves the lift-drag ratio of web plate, can maintain higher hydrodynamic performance in wider range of angles of attack.

Accompanying drawing explanation

Fig. 1 is the structural representation of an embodiment of the present invention;

Fig. 2 is inner side view of the present invention;

Fig. 3 is outer side view of the present invention.

Label declaration: 1: baffle upper plate, 2: high aspect ratio and there is the V-arrangement curved surface wing plate, 3 of receding angle: drag guiding principle stiffener, 4: chin spoiler.

Embodiment

Illustrate below in conjunction with accompanying drawing and be described in further detail embodiments of the invention, but the present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar change thereof, all should list protection scope of the present invention in.

By shown in Fig. 1 to Fig. 3, a kind of vertical type curved face V-arrangement grid web plate that the embodiment of the present invention provides, its by baffle upper plate 1, high aspect ratio and have receding angle V-arrangement curved surface wing plate 2, drag guiding principle stiffener 3, chin spoiler 4 is formed, equally spacedly between baffle upper plate 1 and chin spoiler 4 be provided with multiple high aspect ratio and there is the V-arrangement curved surface wing plate 2 of receding angle, equidistantly to arrange backward between each wing plate, and arrange drag guiding principle stiffener 3 with each high aspect ratio and the V-arrangement curved surface wing plate 2 with receding angle be connected, overall is grid.

Described baffle upper plate 1 is identical with chin spoiler 4 specification, and front end is wedge shape, and rear end is curved.The outside of front end wedge shape is arc, and its size and the radius of curvature arc with high aspect ratio and outside the V-arrangement curved surface wing plate 2 with receding angle is identical, and the radius of curvature of baffle upper plate 1 and chin spoiler 4 rear end arc is significantly lower than the arc outside the wedge shape of front end.

Described each high aspect ratio and to have the specification of the V-arrangement curved surface wing plate 2 of receding angle identical, structure is V-arrangement, upper and lower symmetry, upper counterangle degree is between 10 ° ~ 15 °, the radius of curvature of plate face arc is suitable with the chord length of web plate, and meet flow path direction at wing plate there is certain retrogressing angle, angle is between 10 ° ~ 15 °.

Described drag guiding principle stiffener 3 is equipped with drag guiding principle support, hold minor face to be arc in face of plate, the similar parallelogram sturcutre of other parts.The curved angle draging guiding principle stiffener 3 front end minor face and baffle upper plate 1 are identical with chin spoiler 4 front end wedge shape outer arcuate, terminate from draging the front end of guiding principle stiffener 3 to rear end, connect each high aspect ratio in turn and have the V-arrangement curved surface wing plate 2 of receding angle.

As shown in Figure 1 to Figure 3, high aspect ratio and to have V-arrangement curved surface wing plate 2 induced resistance of receding angle low, lift-drag ratio is high, by multiple high aspect ratio and after the V-arrangement curved surface wing plate 2 with receding angle is combined into the web plate main body of a low aspect ratio, the advantage performance of high aspect ratio web plate can be embodied in different gross ton fishing boat and water layer water body trawling operation, mobility and the operation convenience of web plate can be improved again.

As shown in Figure 1 to Figure 3, by adjusting each high aspect ratio and there is the number of the V-arrangement curved surface wing plate 2 of receding angle, distance between wing plate, the receding angle in curved surface wing plate plate face, the upper counterangle, curve form and setting angle, can adjust the impact of web plate back eddy current on web plate hydrodynamic performance, horizontal stability and lodging resistance (vertical stability).

As shown in Figure 1 to Figure 3, high aspect ratio in the present invention and the curve form with the V-arrangement curved surface wing plate 2 of receding angle can be set to the shapes such as wing, circular arc, non-radiused, needs according to practical structures or intensity can arrange 3-10, drag guiding principle stiffener 3 and can arrange 1-3.

Claims

1. a vertical type curved face V-arrangement grid web plate, it is characterized in that: it by baffle upper plate (1), high aspect ratio and have receding angle V-arrangement curved surface wing plate (2), drag guiding principle stiffener (3), chin spoiler (4) is formed, equally spacedly between baffle upper plate (1) and chin spoiler (4) be provided with multiple high aspect ratio and there is the V-arrangement curved surface wing plate (2) of receding angle, equidistantly to arrange backward between each wing plate, and arrange drag guiding principle stiffener (3) with each high aspect ratio and the V-arrangement curved surface wing plate (2) with receding angle be connected, overall is grid.

2. a kind of vertical type curved face V-arrangement grid web plate according to claim 1, it is characterized in that, described baffle upper plate (1) is identical with chin spoiler (4) specification, front end is wedge shape, rear end is curved, the outside of front end wedge shape is arc, its size and radius of curvature with high aspect ratio and have receding angle V-arrangement curved surface wing plate (2) outside arc identical, the radius of curvature of baffle upper plate (1) and chin spoiler (4) rear end arc is significantly lower than the arc outside the wedge shape of front end.

3. a kind of vertical type curved face V-arrangement grid web plate according to claim 1, it is characterized in that, the specification of described each high aspect ratio curved surface wing plate (2) is identical, structure is V-arrangement, upper and lower symmetry, upper counterangle degree is between 10 ° ~ 15 °, and the radius of curvature of plate face arc is suitable with the chord length of web plate, and meet flow path direction at curved surface wing plate there is certain retrogressing angle, angle is between 10 ° ~ 15 °.

4. a kind of vertical type curved face V-arrangement grid web plate according to claim 1, is characterized in that, described in drag guiding principle stiffener (3) is equipped with and drag guiding principle support, hold minor face to be arc in face of plate, the similar parallelogram sturcutre of other parts.

5. a kind of vertical type curved face V-arrangement grid web plate according to claim 1, it is characterized in that, the described curved angle draging guiding principle stiffener (3) front and back end and baffle upper plate (1) are identical with chin spoiler (4) front end wedge shape outer arcuate, terminate to rear end from draging the front end of guiding principle stiffener (3), connect each high aspect ratio in turn and there is the V-arrangement curved surface wing plate (2) of receding angle.

6. a kind of vertical type curved face V-arrangement grid web plate according to claim 1, it is characterized in that, described high aspect ratio and the quantity with the V-arrangement curved surface wing plate (2) of receding angle can need to arrange 3-10 according to practical structures or intensity, drags guiding principle stiffener (3) and can arrange 1-3.