Opening and closing type ship side thruster grating

Abstract

The utility model provides an open-close type ship side thruster grating which comprises an installation frame and a plurality of grating blades, rotating shafts in the same direction are fixed to the middles of the grating blades, the two ends of each rotating shaft are rotationally connected with the installation frame, the open-close type ship side thruster grating further comprises a control assembly working synchronously with a propeller, and the control assembly controls rotation of the grating blades. According to the side thruster, when the side thruster works, the grating blades rotate and open the end of the pipeline, so that water flow can enter and exit normally, and the side thrusting effect is achieved; when the ship runs normally, the grating blades rotate and seal the two ends of the pipeline. In this way, sundries such as ropes, plastic garbage and aquatic plants encountered by the ship in the running process cannot enter the pipeline through the grating structure to be wound on the propeller, and normal work of the propeller is guaranteed. Meanwhile, no cavity structure exists at the position of the ship bow to influence the water flow direction, so that no extra resistance is generated, the ship propulsion efficiency is prevented from being reduced, and correspondingly, the oil consumption can be prevented from being increased.

Description

Technical Field

[0001] This utility model relates to the field of marine equipment technology, and in particular to an openable / closeable marine thruster grille. Background Technology

[0002] When ships are approaching or leaving docks, passing through canals, entering or exiting locks, navigating narrow channels, or navigating congested waterways, they must maintain a slow speed and frequently use the rudder to change course. However, the slower the ship's speed, the less effective the rudder becomes, making ship handling difficult. This is especially true for container ships, roll-on / roll-off ships, and timber ships with large windward areas; at low speeds, relying solely on the rudder to change course is often insufficient, necessitating the assistance of tugboats.

[0003] A side thruster is a device that assists in the steering of a ship. It is usually a propeller driven by an electric motor, located in a transverse duct at the bow. It can push water from one side to the other, using the reaction force of the water to help the ship turn. When a ship is leaving or approaching a dock or sailing at low speed, the rudder has little effect, and the side thruster can improve the ship's maneuverability.

[0004] To protect the propeller inside the thruster, grates are typically installed at opposite ends of the thruster's cross tube to prevent foreign objects from entering and damaging the propeller. The thruster's grates are generally made of strip steel in a crisscross mesh structure, thus sealing both ends of the cross tube. However, this grating structure can only block larger debris; it is ineffective at preventing thin, flexible objects such as ropes and weeds. Therefore, ropes and weeds may enter the tube and become entangled in the propeller, affecting its operation.

[0005] In addition, the transverse pipes and grates below the bow change the direction of water flow. When the ship is traveling at high speed, the grating structure may generate additional resistance, thereby reducing the ship's propulsion efficiency and increasing fuel consumption. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an openable / closeable ship thruster grille, which solves the problem that existing technologies cannot block flexible debris, thus affecting the propeller. At the same time, the grille affects water flow, increasing additional resistance and reducing ship propulsion efficiency.

[0007] According to an embodiment of the present invention, an openable / closeable ship side thruster grid is provided. The ship side thruster includes a transverse pipe disposed at the bow of the ship, and a propeller is disposed inside the pipe. The grid is respectively disposed at both ends of the pipe. The grid includes an installation frame surrounding the inner wall of the pipe end and a plurality of grid blades rotatably disposed inside the installation frame. The grid blades are arranged in parallel and parallel in sequence. A rotating shaft in the same direction is fixed in the middle of the grid blade. Both ends of the rotating shaft are rotatably connected to the installation frame, so that the grid blades can rotate inside the installation frame and make the grid blades parallel or perpendicular to the plane of the installation frame.

[0008] It also includes a control component embedded in the hull on one side of the mounting frame. The control component controls the rotation of the grid blades. The control component works synchronously with the propeller. When the propeller rotates, the control component drives the grid blades to rotate to a state perpendicular to the mounting frame, opening both ends of the pipe. When the propeller stops, the control component drives the grid blades to rotate to a state parallel to the mounting frame, closing both ends of the pipe.

[0009] Furthermore, the propeller is connected to a motor, which is connected to the top of the pipe via a support member, thus being coaxially positioned in the middle of the pipe. The motor controls the propeller to rotate perpendicular to the pipe axis.

[0010] Furthermore, the mounting frame is a ring structure, the grid blades are of the same width, and when the grid blades are parallel to the mounting frame, they are laid in sequence to fill the internal area of ​​the mounting frame.

[0011] Furthermore, the control component includes an adjusting shaft and a telescopic push rod disposed at one end of the adjusting shaft. The two ends of the adjusting shaft are fixed and rotatable. The adjusting shaft is threaded on the outside of the push rod end, and an adjusting nut is threaded onto the adjusting shaft. The telescopic push rod is parallel to the adjusting shaft and drives the nut to move along the adjusting shaft, thereby driving the adjusting shaft to rotate. The unthreaded part of the adjusting shaft is sequentially connected to the rotating shaft of each grid blade, thereby simultaneously controlling the rotation of all grid blades.

[0012] Furthermore, the adjusting shaft is arranged perpendicular to the rotating shaft, and a drive gear is provided at the connection point of the adjusting shaft corresponding to each rotating shaft. A driven gear is provided at the end of the rotating shaft, and the drive gear and the driven gear are meshing bevel gears.

[0013] Furthermore, a connecting member is provided between the telescopic push rod and the adjusting nut. The connecting member includes a connecting plate and several support rods perpendicular to the connecting plate. The connecting plate is vertically arranged at the movable end of the telescopic push rod, and the support rods are arranged parallel to and around the outside of the adjusting shaft, and are fixedly connected to the connecting plate and the adjusting nut respectively.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In this invention, the grating blades are designed to be rotatable. When the thruster is working, the grating blades rotate to be perpendicular to the mounting frame, thus opening the pipe ends and allowing water to flow in and out normally, achieving the thrusting effect. When the ship is sailing normally and the thruster is not needed, the grating blades rotate and close both ends of the pipe. This prevents debris such as ropes, plastic waste, and seaweed encountered by the ship during navigation from passing through the grating structure and entering the pipe, thus preventing them from getting tangled on the propeller and ensuring the normal operation of the propeller. Simultaneously, there are no hollow structures at the bow that affect the direction of water flow, thus avoiding additional resistance and reducing the ship's propulsion efficiency, which also helps to prevent increased fuel consumption. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the ship installation according to an embodiment of the present utility model.

[0017] Figure 2 This is a detailed diagram of the grille structure in an embodiment of this utility model.

[0018] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle.

[0019] In the above attached figures: 1. Hull; 2. Pipeline; 3. Motor; 4. Propeller; 5. Mounting frame; 6. Grille blades; 7. Adjusting shaft; 8. Telescopic push rod; 9. Connecting piece; 61. Rotating shaft; 62. Driven gear; 71. Adjusting nut; 72. Drive gear; 91. Connecting plate; 92. Support rod. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0021] like Figure 1 As shown in the figure, this utility model embodiment proposes an openable and closable ship side thruster grid. The ship side thruster includes a transverse pipe 2 located at the bow of the hull 1. A propeller 4 is installed inside the pipe 2. The propeller 4 is connected to a motor 3. The motor 3 is connected to the top of the pipe 2 through a support member, so that it is coaxially arranged in the middle of the pipe 2. The motor 3 controls the propeller 4 to rotate perpendicular to the axial direction of the pipe 2.

[0022] like Figure 2As shown, the grilles are respectively installed at both ends of the pipe 2. The grilles include an installation frame 5 surrounding the inner wall of the end of the pipe 2 and a number of grille blades 6 rotatably installed inside the installation frame 5. The grille blades 6 are arranged in parallel and parallel. A rotating shaft 61 in the same direction is fixed in the middle of the grille blades 6. Both ends of the rotating shaft 61 are rotatably connected to the installation frame 5, so that the grille blades 6 can rotate inside the installation frame 5, so that the grille blades 6 are parallel or perpendicular to the plane of the installation frame 5.

[0023] Specifically, the mounting frame 5 is a ring structure, and the grid blades 6 have the same width. When the grid blades 6 are parallel to the mounting frame 5, they are laid sequentially to fill the internal area of ​​the mounting frame 5. That is, the adjacent side of the grid blade 6 is a straight edge, and the end position of the mounting frame 5 is an arc-shaped structure corresponding to the inner arc surface of the ring.

[0024] This embodiment also includes a control component embedded in the hull 1 on one side of the mounting frame 5. The control component controls the rotation of the grille blades 6 and operates synchronously with the propeller 4. When the propeller 4 rotates, the control component drives the grille blades 6 to rotate to a position perpendicular to the mounting frame 5, opening both ends of the pipe 2. When the propeller 4 stops, the control component drives the grille blades 6 to rotate to a position parallel to the mounting frame 5, closing both ends of the pipe 2. In this embodiment, synchronous operation can be achieved by connecting the motor 3 and the switch of the control component in series.

[0025] In a further embodiment, the control component includes an adjusting shaft 7 and a telescopic push rod 8 disposed at one end of the adjusting shaft 7. The two ends of the adjusting shaft 7 are fixed and rotatable. The adjusting shaft 7 has threads on the exterior corresponding to the push rod end, and an adjusting nut 71 is threaded onto the adjusting shaft 7. In this embodiment, the adjusting shaft 7 and the adjusting nut 71 are connected via a lead screw drive. Since the two ends of the adjusting shaft 7 are fixed and can only rotate, when the adjusting nut 71 moves linearly, the adjusting shaft 7 rotates axially. The telescopic push rod 8 is parallel to the adjusting shaft 7 and drives the nut to move along the adjusting shaft 7, thereby driving the adjusting shaft 7 to rotate. The unthreaded portion of the adjusting shaft 7 is sequentially connected to the rotating shaft 61 of each grid blade 6, thereby simultaneously controlling the rotation of all grid blades 6. Figure 3 As shown, the adjusting shaft 7 is set perpendicular to the rotating shaft 61. The adjusting shaft 7 is provided with a drive gear 72 at the connection point of each rotating shaft 61, and the end of the rotating shaft 61 is provided with a driven gear 62. The drive gear 72 and the driven gear 62 are bevel gears that mesh with each other.

[0026] Preferably, a connecting member 9 is provided between the telescopic push rod 8 and the adjusting nut 71. The connecting member 9 includes a connecting plate 91 and two support rods 92 perpendicular to the connecting plate 91. The connecting plate 91 is vertically disposed at the movable end of the telescopic push rod 8, and the support rods are arranged parallel to and surrounding the outside of the adjusting shaft 7, and are fixedly connected to the connecting plate 91 and the adjusting nut 71 respectively. In this way, when the telescopic push rod 8 is working, it drives the adjusting nut 71 to move through the connecting plate 91 and the support rods 92.

[0027] In this embodiment, when the propeller 4 is not working, the motor 3 is off, the bar screen blades 6 are in a closed state, and the telescopic push rod 8 is also in a retracted state. When side thrust is required, the motor 3 starts, and the telescopic push rod 8 starts working, pushing the adjusting nut 71 to move, thereby controlling the rotation of the adjusting rod. The drive shaft 61 and the bar screen blades 6 rotate simultaneously through the bevel gear connection. When the telescopic push rod 8 moves to the maximum distance, the bar screen blades 6 rotate to be perpendicular to the mounting frame 5 and open the end of the pipe 2, thus realizing normal water flow and completing the side thrust operation.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A closable bar screen for a ship's side thruster, the side thruster comprising a transverse duct disposed at the bow, a propeller disposed within the duct, and bar screens respectively disposed at both ends of the duct, characterized in that: The grille includes an installation frame surrounding the inner wall of the pipe end and several grille blades rotatably disposed inside the installation frame. The grille blades are arranged in parallel and parallel order. A rotating shaft in the same direction is fixed in the middle of the grille blade. Both ends of the rotating shaft are rotatably connected to the installation frame, so that the grille blades can rotate inside the installation frame and make the grille blades parallel or perpendicular to the plane of the installation frame. It also includes a control component embedded in the hull on one side of the mounting frame. The control component controls the rotation of the grid blades. The control component works synchronously with the propeller. When the propeller rotates, the control component drives the grid blades to rotate to a state perpendicular to the mounting frame, opening both ends of the pipe. When the propeller stops, the control component drives the grid blades to rotate to a state parallel to the mounting frame, closing both ends of the pipe.

2. The openable / closable ship side thruster grille as described in claim 1, characterized in that: The propeller is connected to a motor, which is connected to the top of the pipe via a support member, thus being coaxially positioned in the middle of the pipe. The motor controls the propeller to rotate perpendicular to the pipe axis.

3. The openable / closable ship side thruster grille as described in claim 1, characterized in that: The mounting frame is a ring structure. The grid blades are of the same width and are laid in sequence to fill the internal area of ​​the mounting frame when they are parallel to the mounting frame.

4. The openable / closable ship side thruster grille as described in claim 1, characterized in that: The control component includes an adjusting shaft and a telescopic push rod disposed at one end of the adjusting shaft. The two ends of the adjusting shaft are fixed and rotatable. The external part of the adjusting shaft corresponding to the push rod end is threaded, and an adjusting nut is threadedly connected to the adjusting shaft. The telescopic push rod is parallel to the adjusting shaft and drives the nut to move along the adjusting shaft, thereby driving the adjusting shaft to rotate. The unthreaded part of the adjusting shaft is sequentially connected to the rotating shaft of each grid blade, thereby simultaneously controlling the rotation of all grid blades.

5. The openable / closable ship side thruster grille as described in claim 4, characterized in that: The adjusting shaft is set perpendicular to the rotating shaft. A drive gear is provided at the connection point of the adjusting shaft corresponding to each rotating shaft, and a driven gear is provided at the end of the rotating shaft. The drive gear and the driven gear are meshing bevel gears.

6. The openable / closable ship side thruster grille as described in claim 4, characterized in that: A connecting component is also provided between the telescopic push rod and the adjusting nut. The connecting component includes a connecting plate and several support rods perpendicular to the connecting plate. The connecting plate is vertically arranged at the movable end of the telescopic push rod, and the support rods are arranged parallel to and around the outside of the adjusting shaft, and are fixedly connected to the connecting plate and the adjusting nut respectively.

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