CN217754065U

CN217754065U - Novel ship propeller cap fin

Info

Publication number: CN217754065U
Application number: CN202221764871.7U
Authority: CN
Inventors: 张钦尧; 江华
Original assignee: Changzhou Zhonghai Ship Propeller Co ltd
Current assignee: Changzhou Zhonghai Ship Propeller Co ltd
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2022-11-08
Anticipated expiration: 2032-07-08

Abstract

The utility model relates to the technical field of shipbuilding, in particular to a novel propeller cap fin for ships, which is characterized in that by arranging the device, a hub and a cap body are connected by adopting a mode of clamping a hexagonal slot and a hexagonal insert block and connecting a stud and a nut thread, thereby improving the connection stability of the cap body and the hub, ensuring the hub and the cap body to coaxially rotate and improving the effect of eliminating vortex; including power shaft, propeller hub, the multiunit paddle, the cap body, multiunit fin and connecting device, power shaft installs on boats and ships, and propeller hub and the cap body pass through connecting device and connect, and connecting device includes two sets of double-screw bolts, hexagonal inserted block, two sets of nuts and two sets of check washers, and the propeller hub left part is provided with the hexagonal slot, and the cap body and hexagonal inserted block all communicate and are provided with two sets of perforation, and two sets of perforation correspond with two sets of double-screw bolt positions, and threaded connection can be dismantled with two sets of double-screw bolts to two sets of nuts, and two sets of check washers are located between two sets of nuts and the cap body.

Description

Novel ship propeller cap fin

Technical Field

The utility model relates to a technical field of shipbuilding especially relates to a novel oar cap fin for boats and ships.

Background

The spinner fins are also known as propeller spinner fins. A propeller energy saving device is formed by installing a plurality of proper blades on the surface of a common propeller hub cap. On one hand, the rotating energy of the propeller wake flow is absorbed to generate positive torque, and on the other hand, the hub vortex of the propeller is eliminated or weakened to play a role in rectification, so that the hub vortex resistance is reduced, and the efficiency of the propeller is improved.

Patent number CN201820183938.5 discloses a propeller cap fin, its main design main points are, including screw, hub cap fin, be used for with the screw with hub cap fin coaxial fastening in integrative connecting rod, the screw include the propeller hub, evenly set up in a plurality of paddles of propeller hub outer wall, hub cap fin include the cap body, evenly set up in a plurality of fins of cap body outer wall, the connecting rod include the body of rod, coaxial setting in the ring body of rod outer wall, the body of rod is worn to establish the propeller hub with behind the cap body, the propeller hub with the cap body welded fastening respectively in ring body both ends lateral wall. The utility model discloses when the propeller hub is rotatory, the propeller hub drives the cap body rotatory, and the cap body drives the fin rotation, eliminates the rotatory swirl that produces of paddle through the fin, and then reduces the swirl resistance, has improved the work efficiency of screw.

Currently, the paddle hat fin disclosed in the above patent has the following technical disadvantages: the propeller and the spinner fins are connected through the connecting rods, the connection is unstable, and the connecting rods can rotate relatively, so that the propeller and the spinner fins are asynchronous, and the vortex eliminating effect of the propeller cap fins is greatly reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a mode through adopting hexagonal slot and hexagonal inserted block to clamp and double-screw bolt and nut threaded connection makes the propeller hub and the cap body be connected, has improved the stability of being connected of the cap body with the propeller hub, also can guarantee propeller hub and cap body coaxial rotation moreover, has improved the novel for boats and ships propeller cap fin of the effect that the disrotatory whirlpool was eliminated.

The utility model discloses a novel for boats and ships paddle cap fin, including the power shaft, the propeller hub, the multiunit paddle, the cap body, multiunit fin and connecting device, the power shaft is installed on boats and ships, the propeller hub is installed on the power shaft, the multiunit paddle is evenly installed in the propeller hub outside, multiunit fin is evenly installed in the external side of cap, propeller hub and the cap body pass through connecting device and connect, connecting device includes two sets of double-screw bolts, the hexagonal inserted block, two sets of nuts and two sets of check washers, the propeller hub left part is provided with the hexagonal slot, anterior and rear portion in the hexagonal slot are installed to two sets of double-screw bolts, the hexagonal inserted block corresponds with hexagonal slot shape, the hexagonal inserted block is installed at the cap body right-hand member, cap body and hexagonal inserted block all communicate and are provided with two sets of perforation, two sets of perforation correspond with two sets of double-screw bolt positions, threaded connection can be dismantled to two sets of nuts and two sets of double-screw bolts, two sets of check washers are located between two sets of nuts and the cap body.

The utility model discloses a novel oar cap fin for boats and ships, hexagonal inserted block right-hand member are provided with the lead angle.

The utility model discloses a novel for boats and ships oar cap fin, propeller hub, paddle, double-screw bolt, hexagonal inserted block, the cap body, fin and nut all adopt the carbide material, and its surface scribbles the paint vehicle.

The utility model discloses a novel oar cap fin for boats and ships, the contained angle between paddle central line and the fin central line is 17-18.

The utility model discloses a novel oar cap fin for boats and ships, fin pitch is 0.75 times of paddle.

Compared with the prior art, the beneficial effects of the utility model are that: the hexagonal inserting block is rotated, two groups of through holes in the hexagonal inserting block correspond to two groups of stud positions in the hexagonal inserting block, then the hexagonal inserting block is inserted into the hexagonal inserting block, the two groups of studs penetrate through the hexagonal inserting block and the two groups of through holes in the cap body to extend out, then two groups of anti-loosening gaskets penetrate through the two groups of studs, then two groups of nuts are in threaded connection with the two groups of studs, and therefore the installation of the cap body is completed.

Drawings

FIG. 1 is an isometric view of the present invention;

FIG. 2 is a front view of the structure of FIG. 1;

FIG. 3 is a schematic left side view of the structure of FIG. 1;

in the drawings, the reference numbers: 1. a power shaft; 2. a hub; 3. a paddle; 4. a hexagonal socket; 5. a stud; 6. a hexagonal insert block; 7. a cap body; 8. a fin; 9. perforating; 10. a nut; 11. a lock washer; 12. and (6) guiding the angle.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 3, the utility model discloses a novel propeller cap fin for ship, including power shaft 1, hub 2, multiunit paddle 3, cap body 7, multiunit fin 8 and connecting device, power shaft 1 installs on the ship, hub 2 installs on power shaft 1, multiunit paddle 3 evenly installs in the hub 2 outside, multiunit fin 8 evenly installs in the cap body 7 outside, hub 2 and cap body 7 are connected through connecting device, connecting device includes two sets of double-screw bolts 5, hexagonal inserted block 6, two sets of nuts 10 and two sets of anti-loosening gaskets 11, hub 2 left part is provided with hexagonal slot 4, two sets of double-screw bolts 5 install anterior and rear portion in hexagonal slot 4, hexagonal inserted block 6 corresponds with hexagonal slot 4 shape, hexagonal inserted block 6 installs at cap body 7 right-hand member, cap body 7 and hexagonal inserted block 6 all communicate and are provided with two sets of perforation 9, two sets of perforation 9 correspond with two sets of double-screw bolts 5 position, two sets of nuts 10 and two sets of anti-loosening threaded connection of double-screw bolts 5 can dismantle, two sets of anti-loosening gaskets 11 are located between two sets of nuts 10 and cap body 7; the hexagonal plug 6 is rotated to enable two groups of through holes 9 in the hexagonal plug 6 to correspond to two groups of studs 5 in the hexagonal slot 4, then the hexagonal plug 6 is inserted into the hexagonal slot 4, the two groups of studs 5 penetrate through the hexagonal plug 6 and the two groups of through holes 9 in the cap body 7 to extend out, then two groups of anti-loosening gaskets 11 penetrate through the two groups of studs 5, and then two groups of nuts 10 are in threaded connection with the two groups of studs 5, so that the cap body 7 is installed.

The utility model relates to a novel ship propeller cap fin, the right end of a hexagonal insert 6 is provided with a guide angle 12; by arranging the guide angle 12, the hexagonal insertion block 6 can be conveniently inserted into the hexagonal insertion groove 4.

The utility model relates to a novel ship propeller cap fin, the propeller hub 2, the propeller blade 3, the stud 5, the hexagonal insert 6, the cap body 7, the fins 8 and the nut 10 are all made of hard steel alloy materials, and the surfaces of the fins are coated with paint vehicle; the hard steel alloy material has high structural strength and is not easy to deform and damage, and the paint coated on the surface of the hard steel alloy material can play a role in resisting corrosion and rusting.

The novel ship propeller cap fin of the utility model has the advantages that the included angle between the central line of the propeller blade 3 and the central line of the fin 8 is 17-18 degrees; through the multi-angle selectivity test, when the included angle is 17-18 degrees, the fins 8 can better eliminate vortexes, and further the working efficiency of the propeller is improved.

The utility model relates to a novel ship propeller cap fin, the pitch of the fin 8 is 0.75 times of that of the blade 3; by setting the pitch of 0.75 times, the deflection angles of the fins 8 and the blades 3 are different, so that the vortex eliminating capability of the fins 8 is improved, and the working efficiency of the propeller is improved.

The utility model discloses a novel oar cap fin for boats and ships, it is at the during operation, at first rotate hexagonal inserted block 6, two sets of perforation 9 on making hexagonal inserted block 6 correspond with two sets of double-screw bolts 5 positions in the hexagonal slot 4, then insert hexagonal inserted block 6 to the hexagonal slot 4 in, two sets of double-screw bolts 5 then pass two sets of perforation 9 in hexagonal inserted block 6 and the cap body 7 and stretch out, later make two sets of check washers 11 pass two sets of double-screw bolts 5, then make two sets of

nuts

10 and 5 threaded connection of two sets of double-screw bolts, thereby the completion to the installation of the cap body 7 can.

The novel ship propeller cap fin has the advantages that the installation mode, the connection mode or the arrangement mode are common mechanical modes, and the novel ship propeller cap fin can be implemented as long as the beneficial effects can be achieved; the utility model discloses a novel power shaft 1 of oar cap fin for boats and ships for purchase on the market, this industry technical staff only need according to its subsidiary service instruction install and operate can.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A novel ship propeller cap fin comprises a power shaft (1), a propeller hub (2), a plurality of groups of blades (3), a cap body (7), a plurality of groups of fins (8) and a connecting device, wherein the power shaft (1) is installed on a ship, the propeller hub (2) is installed on the power shaft (1), the plurality of groups of blades (3) are uniformly installed on the outer side of the propeller hub (2), the plurality of groups of fins (8) are uniformly installed on the outer side of the cap body (7), and the propeller hub (2) is connected with the cap body (7) through the connecting device;

the novel propeller hub is characterized in that the connecting device comprises two sets of studs (5), a hexagonal inserting block (6), two sets of nuts (10) and two sets of anti-loosening gaskets (11), a hexagonal inserting groove (4) is formed in the left portion of the propeller hub (2), the two sets of studs (5) are installed in the front portion and the rear portion of the hexagonal inserting groove (4), the hexagonal inserting block (6) corresponds to the hexagonal inserting groove (4) in shape, the hexagonal inserting block (6) is installed at the right end of the helmet body (7), the helmet body (7) and the hexagonal inserting block (6) are both communicated and provided with two sets of through holes (9), the two sets of through holes (9) correspond to the two sets of studs (5) in position, the two sets of nuts (10) are connected with the two sets of studs (5) in a detachable mode through threads, and the two sets of anti-loosening gaskets (11) are located between the two sets of nuts (10) and the helmet body (7).

2. A novel marine rowcap fin in accordance with claim 1, characterized in that the right end of the hexagonal block (6) is provided with a lead angle (12).

3. The novel marine propeller cap fin according to claim 1, wherein the hub (2), the blades (3), the studs (5), the hexagonal inserts (6), the cap body (7), the fins (8) and the nuts (10) are made of hard steel alloy, and the surfaces of the blades, the studs, the hexagonal inserts and the nuts are coated with paint.

4. A new type of ship's cap fin as claimed in claim 1, characterized in that the angle between the blade (3) centerline and the fin (8) centerline is 17 ° -18 °.

5. A new watercraft-paddle-hat fin according to claim 1, characterised in that the pitch of said fins (8) is 0.75 times the pitch of the blades (3).