Energy-saving and resistance-reducing fairing of ship propeller

Abstract

The utility model relates to an energy-saving anti-drag type fairing of a ship propeller, which comprises a connecting piece and a shearing device, the connecting piece is connected with a driver, the surface of the driver is fixedly provided with a fairing, the outer wall of the fairing is provided with a first protective cover covering the outer sides of a driving disc and teeth, and the shearing device is connected with the connecting piece. And a second protection cover for protecting the motor is mounted on the outer wall of the flow guide cover. When in use, the first protective cover mounted on the outer wall of the flow guide cover can cover the outer sides of the driving disc and the teeth, so that the driving disc and the teeth are prevented from being directly exposed in water flow, and the problem that the motor is overloaded and burnt or transmission fails due to the fact that sundries in water are clamped between the driving disc and the teeth is effectively prevented; and the motor can be protected and is prevented from being collided by sundries in water, so that the service life of the motor is effectively prolonged.

Description

Technical Field

[0001] This utility model relates to the field of propeller technology, and in particular to an energy-saving and drag-reducing fairing for a ship propeller. Background Technology

[0002] Propellers are key propulsion devices for ships, aircraft, and other vehicles, typically consisting of blades and a hub. Their working principle involves an engine driving the blades to rotate, utilizing hydrodynamic principles to create a pressure difference between the front and rear of the blades, thereby generating forward thrust or pull. Marine propellers are usually mounted at the stern and must adapt to the complex underwater environment; therefore, they are often made of corrosion-resistant copper alloys or stainless steel. Their performance directly affects the vehicle's power efficiency.

[0003] In the prior art, Chinese patent CN202321640676.8 discloses a propeller guide device for ships. This utility model includes a connector and a shearing device. A driver is fixedly mounted on the surface of the connector, and a guide shield is fixedly mounted on the surface of the driver. The shearing device is provided on the surface of the guide shield. The shearing device includes a ring, the sidewall of which is fixedly connected to the sidewall of the guide shield. A retaining ring is rotatably connected to the surface of the ring, and a placement ring is fixedly connected to the sidewall of the retaining ring. A cutter is fixedly connected to the inner surface of the placement ring. Multiple bolts are threadedly connected to the surfaces of the connector and the driver. A protective device is provided on the surfaces of the connector and the driver, including a main sleeve that fits over the surfaces of the connector and the driver, and a secondary sleeve that fits over the surfaces of the connector and the driver. However, the above patent has the following shortcomings: the drive disc and teeth are directly exposed, making them susceptible to being jammed by debris in the water during use, leading to motor overload and burnout or transmission failure. Furthermore, the cutter is fixedly connected to the inner surface of the placement ring, making it inconvenient to disassemble for grinding or replacement after wear.

[0004] Therefore, this utility model proposes an energy-saving and drag-reducing fairing for ship propellers to solve the above problems. Summary of the Invention

[0005] The purpose of this utility model is to solve the problems in the prior art where the drive disc and teeth are directly exposed, making them easy to be stuck by debris in the water during use, leading to motor overload and burnout or transmission failure. In addition, the cutter is fixedly connected to the inner surface of the placement ring, making it inconvenient to disassemble and grind or replace it after wear. Therefore, this utility model proposes an energy-saving and drag-reducing flow guide for ship propellers.

[0006] The purpose of this utility model is achieved as follows:

[0007] An energy-saving and drag-reducing fairing for a ship propeller includes a connector and a shearing device. A driver is connected to the connector, and the fairing is fixedly mounted on the surface of the driver. A first protective cover covering the drive disc and teeth is installed on the outer wall of the fairing. A second protective cover for protecting the motor is installed on the outer wall of the fairing. The second protective cover is located on one side of the first protective cover. Two mounting seats are symmetrically installed on the inner wall of the placement ring, and a cutter is detachably installed between the two mounting seats.

[0008] As a preferred technical solution of this utility model, the first protective cover includes a first shell and a second shell arranged symmetrically, and both the first shell and the second shell are provided with a first groove that cooperates with the output shaft of the motor.

[0009] As a preferred technical solution of this utility model, the side walls of the first housing and the second housing are each fixedly connected with a plurality of connecting pieces, and a first bolt that is threadedly connected to the guide shield is installed through the connecting pieces.

[0010] As a preferred embodiment of the present invention, the second protective cover includes a base fixedly connected to the top of the guide shield and two third housings symmetrically arranged on the outside of the base, and the motor is mounted on the top of the base.

[0011] As a preferred technical solution of this utility model, the third housing is provided with a second groove that cooperates with the motor output shaft, the third housing is threaded with a plurality of second bolts, and the side wall of the base is provided with a threaded hole that cooperates with the second bolts.

[0012] As a preferred technical solution of this utility model, the mounting base includes a mounting plate fixedly connected to the inner wall of the placement ring, a connecting rod fixedly connected to the front side of the mounting plate, a through hole that cooperates with the connecting rod on the cutter, a limit block threadedly connected to the connecting rod, and a washer fixedly connected to one end of the limit block.

[0013] Compared with the prior art, this utility model provides an energy-saving and drag-reducing fairing for ship propellers, which has the following beneficial effects:

[0014] (1) When this utility model is used, the first protective cover installed on the outer wall of the guide cover can cover the outside of the drive disc and teeth, preventing them from being directly exposed to the water flow. This effectively prevents debris in the water from getting stuck between the drive disc and teeth, causing the motor to overload and burn out or the transmission to fail. At the same time, the second protective cover can also protect the motor and prevent it from being hit by debris in the water, thereby effectively extending the service life of the motor.

[0015] (2) With two symmetrically arranged mounting bases, the cutter can be detachably installed on the inner wall of the placement ring during use, which makes it convenient to remove the cutter for grinding or replacement when it is worn, without having to remove it together with the placement ring. This makes maintenance more convenient and quick, and significantly reduces maintenance costs and time. Attached Figure Description

[0016] Figure 1 This is a front structural diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the back structure of this utility model.

[0018] Figure 3 This is an exploded view of the present invention.

[0019] Figure 4 for Figure 2 Enlarged view of the structure at point A.

[0020] Figure 5 for Figure 3 Enlarged view of the structure at point B.

[0021] In the picture:

[0022] 1. Connector; 2. Driver; 3. Draft shield; 4. First protective cover; 5. Second protective cover; 6. Mounting base; 7. Cutter; 8. Placement ring; 9. Motor; 10. Drive disc; 11. Tooth; 401. First housing; 402. Second housing; 403. Connecting piece; 404. First bolt; 405. First groove; 501. Base; 502. Third housing; 503. Second bolt; 504. Second groove; 601. Mounting plate; 602. Connecting rod; 603. Through hole; 604. Limiting block; 605. Washer. Detailed Implementation

[0023] To better understand the technical solution of this utility model, a detailed description will be provided below in conjunction with relevant illustrations. It should be understood that the specific embodiments described below are not intended to limit the specific implementation of the technical solution of this utility model, but are merely possible implementations of the technical solution of this utility model. It should be noted that the descriptions of the positional relationships of the components herein, such as component A being located above component B, are based on the relative positions of the components in the illustrations and are not intended to limit the actual positional relationships of the components. Example 1

[0024] See Figure 1-5 , Figure 1A schematic diagram of the structure of an energy-saving and drag-reducing fairing for a ship propeller according to Embodiment 1 is shown. As shown in the figure, the energy-saving and drag-reducing fairing for a ship propeller according to Embodiment 1 includes a connector 1 and a shearing device. A driver 2 is connected to the connector 1. A fairing 3 is fixedly installed on the surface of the driver 2. A first protective cover 4 is installed on the outer wall of the fairing 3, covering the drive disc 10 and the teeth 11. A second protective cover 5 for protecting the motor 9 is installed on the outer wall of the fairing 3. The second protective cover 5 is located on one side of the first protective cover 4. In use, the first protective cover 4 installed on the outer wall of the fairing 3 can cover the outside of the drive disc 10 and the teeth 11, preventing them from being directly exposed to the water flow. This effectively prevents debris in the water from getting stuck between the drive disc 10 and the teeth 11, causing the motor to overload and burn out or the transmission to fail.

[0025] Meanwhile, the second protective cover 5 can also protect the motor 9, preventing it from being hit by debris in the water, thereby effectively extending the service life of the motor 9.

[0026] Two mounting seats 6 are symmetrically installed on the inner wall of the placement ring 8. A cutter 7 is detachably installed between the two mounting seats 6. With the two mounting seats 6 symmetrically arranged, the cutter 7 can be detachably installed on the inner wall of the placement ring 8 during use. This makes it convenient to remove the cutter 7 separately for grinding or replacement when it is worn, without having to remove it together with the placement ring 8. This makes maintenance more convenient and faster, and significantly reduces maintenance costs and time.

[0027] like Figures 1-4 As shown, the first protective cover 4 includes a first housing 401 and a second housing 402 symmetrically arranged. Both the first housing 401 and the second housing 402 have a first groove 405 that mates with the output shaft of the motor 9. Multiple connecting pieces 403 are fixedly connected to the side walls of both the first housing 401 and the second housing 402. A first bolt 404, threadedly connected to the guide shield 3, is installed through each connecting piece 403. It should be noted that in use, the first housing 401 and the second housing 402 are spliced ​​onto the outside of the drive disc 10 and the teeth 11, and then the two are fixed to the outer wall of the guide shield 3 using the first bolt 404 and the connecting pieces 403, thus completing the installation of the first protective cover 4.

[0028] like Figures 1-4As shown, the second protective cover 5 includes a base 501 fixedly connected to the top of the guide cover 3 and two third housings 502 symmetrically arranged on the outside of the base 501. The motor 9 is mounted on the top of the base 501. A second groove 504 is provided on the third housing 502 to cooperate with the output shaft of the motor 9. Multiple second bolts 503 are threaded onto the third housing 502. Threaded holes are provided on the side wall of the base 501 to cooperate with the second bolts 503. It should be noted that in use, the motor 9 is first mounted on the base 501, then the two third housings 502 are mounted on the outside of the base 501, and finally the second bolts 503 are passed through the third housings 502 and screwed into the threaded holes on the side wall of the base 501 to complete the fixation of the base 501. The third housings 502 prevent water flow and debris in the water flow from directly impacting the motor 9, thus protecting the motor 9.

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the mounting base 6 includes a mounting plate 601 fixedly connected to the inner wall of the placement ring 8. A connecting rod 602 is fixedly connected to the front side of the mounting plate 601. The cutter 7 has a through hole 603 that mates with the connecting rod 602. A limiting block 604 is threadedly connected to the connecting rod 602. A washer 605 is fixedly connected to one end of the limiting block 604. It should be noted that the connecting rod 602, the through hole 603, and the limiting block 604 facilitate the installation of the cutter 7. The washer 605 prevents water from entering the connection between the limiting block 604 and the connecting rod 602.

[0030] Working principle:

[0031] This utility model provides an energy-saving and drag-reducing fairing for a ship propeller. In use: the first housing 401 and the second housing 402 are spliced ​​onto the outside of the drive disc 10 and the teeth 11. Then, the two are fixed to the outer wall of the fairing 3 using the first bolt 404 and the connecting piece 403, thus completing the installation of the first protective cover 4. Next, two third housings 502 are installed on the outside of the base 501. Then, the second bolt 503 is passed through the third housing 502 and screwed into the screw hole on the side wall of the base 501, thus completing the fixation of the second protective cover 5. When installing the cutter 7, first align the through hole 603 on the cutter 7 with the connecting rod 602, install the cutter 7 on the connecting rod 602, and then screw the limiting block 604 onto the connecting rod 602, so that the washer 605 on the limiting block 604 abuts against the front of the cutter 7. If it is necessary to disassemble the cutter 7, unscrew the limiting block 604, and the cutter 7 can be removed from the connecting rod 602 for grinding or replacement.

[0032] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent transformations or equivalent substitutions fall within the scope of protection of this utility model.

Claims

1. An energy saving and drag reducing type of bossing for a marine propeller, characterised in that: Includes a connector (1) and a shearing device. A driver (2) is connected to the connector (1). A flow guide (3) is fixedly installed on the surface of the driver (2). A first protective cover (4) covering the drive disk (10) and teeth (11) is installed on the outer wall of the flow guide (3). A second protective cover (5) for protecting the motor (9) is installed on the outer wall of the flow guide (3). The second protective cover (5) is located on one side of the first protective cover (4). Two mounting seats (6) are symmetrically installed on the inner wall of the placement ring (8). A cutter (7) is detachably installed between the two mounting seats (6).

2. An energy saving and drag reducing type of bossing for a marine propeller as claimed in claim 1 wherein: The first protective cover (4) includes a first housing (401) and a second housing (402) arranged symmetrically. Both the first housing (401) and the second housing (402) are provided with a first groove (405) that cooperates with the output shaft of the motor (9).

3. An energy saving and drag reducing type of bossing for a marine propeller as claimed in claim 2 wherein: The sidewalls of the first housing (401) and the second housing (402) are fixedly connected with a plurality of connecting pieces (403), and a first bolt (404) that is threadedly connected to the flow guide (3) is installed through the connecting piece (403).

4. An energy saving and drag reducing type of bossing for a marine propeller as claimed in claim 1 wherein: The second protective cover (5) includes a base (501) fixedly connected to the top of the guide cover (3) and two third housings (502) symmetrically arranged on the outside of the base (501), and the motor (9) is mounted on the top of the base (501).

5. The energy-saving and drag-reducing fairing for a ship propeller according to claim 4, characterized in that: The third housing (502) has a second groove (504) that cooperates with the output shaft of the motor (9). The third housing (502) is threaded with a plurality of second bolts (503). The side wall of the base (501) has a screw hole that cooperates with the second bolts (503).

6. An energy saving and drag reducing type of bossing for a marine propeller as claimed in claim 1 wherein: The mounting base (6) includes a mounting plate (601) fixedly connected to the inner wall of the placement ring (8). A connecting rod (602) is fixedly connected to the front side of the mounting plate (601). A through hole (603) is provided on the cutter (7) to cooperate with the connecting rod (602). A limit block (604) is threadedly connected to the connecting rod (602). A washer (605) is fixedly connected to one end of the limit block (604).

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