A marine waterjet bow thruster

Abstract

The utility model discloses a kind of ship water-jet bow side thrust devices, the utility model relates to ship side thrust technical field.This ship water-jet bow side thrust device includes mounting plate, the upper portion of the mounting plate is provided with side thrust mechanism, for providing lateral force, the side thrust mechanism includes: drive assembly, including fixedly installed in the bearing of mounting plate center, the inside fixed mounting of the bearing has support disc, the upper portion fixed mounting of the support disc has water pump, the water inlet of the water pump is fixedly installed with water inlet pipe, the bottom of the water inlet pipe is embedded with filter element, the steering motor of device, fine adjustment motor and water pump are all installed on the upper portion of support disc, support disc is connected with mounting plate by bearing and overall is in the water area above mounting plate, completely separates from underwater environment.Steering motor is fixed by support frame and mounting plate, fine adjustment motor and water pump are directly fixed on support disc, all power and control class core components are in the range of ship deck accessible.

Description

Technical Field

[0001] This utility model relates to the field of ship side thrust technology, specifically a ship waterjet bow side thrust device. Background Technology

[0002] A ship is a means of transportation capable of navigating or anchoring in waterways for transport or operations. Depending on the specific requirements, ships possess different technical specifications, equipment, and structural forms. A ship is a man-made means of transportation primarily operating in geographical waterways. A bow thruster, or bow propeller, is a special type of propulsion device mounted at the bow of a ship to improve its maneuverability and precisely maintain its position. It is used in marine engineering vessels and ferries.

[0003] The existing utility model patent with publication number CN222713720U discloses a ship's waterjet bow thruster device, including a thruster motor. A mounting base is bolted to the outside of the thruster motor, and a lifting hydraulic cylinder is mounted on the upper side of the mounting base. One end of the thruster motor's drive shaft has a thrust head. Blades are provided on both sides of the thrust head via an angle adjustment mechanism and a connecting shaft. The angle adjustment mechanism includes a slider with a horizontal threaded screw in the middle of the thrust head, and one end of the blade is connected to the slider via a gear and rack assembly. Because the thrust head has blades on both sides via the angle adjustment mechanism and connecting shaft, and the blades can be adjusted to swing back and forth at an angle of 120°, the angle adjustment mechanism can control the swing angle of one end of the blades, enabling forward or backward adjustment and control of different thrust magnitudes.

[0004] The aforementioned side thrust device motor needs to be placed in water. The sealing of the motor housing decreases over time, and water pressure can cause water to seep into the motor housing, affecting the normal use of the device. Furthermore, the fact that the motor is underwater makes maintenance very inconvenient. Also, the blades used to generate thrust may become entangled in aquatic plants and debris during rotation, preventing them from rotating properly. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a ship waterjet bow thruster that solves the problems of propeller blades being jammed by debris and unable to generate thrust, as well as the inconvenience of maintenance and operation due to the motor being located underwater.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A ship's waterjet bow thruster includes a mounting plate, and a thrust mechanism is disposed above the mounting plate to provide lateral force. The thrust mechanism includes: The drive assembly includes a bearing fixedly mounted at the center of a mounting plate, a support plate fixedly mounted inside the bearing, a water pump fixedly mounted above the support plate, an inlet pipe fixedly mounted at the inlet of the water pump, a filter element fitted into the bottom of the inlet pipe, a limit sleeve movably mounted on the outside of the inlet pipe, a drain pipe fixedly mounted at the outlet of the water pump, a guide pipe fixedly mounted at the bottom of the drain pipe, and a guide plate movably mounted at the front end of the guide pipe. An adjustment component, located above the mounting plate, is used to adjust the direction of lateral forces.

[0007] Preferably, the adjustment assembly includes a support frame fixedly mounted above the mounting plate, a steering motor fixedly mounted above the support frame, a gear fixedly mounted below the shaft of the steering motor, a gear ring fixedly mounted on the outer side of the support plate, a fine-tuning motor fixedly mounted above the support plate, and a connecting rod fixedly mounted below the shaft of the fine-tuning motor.

[0008] Preferably, the support plate is rotatably connected to the mounting plate via a bearing, the water inlet pipe and the drain pipe pass through the support plate, and the inner wall of the bottom end of the limiting sleeve is provided with an annular protrusion structure.

[0009] Preferably, the limiting sleeve and the water inlet pipe are connected by threads, the filter element is cylindrical, and the filter element is installed at the bottom end of the water inlet pipe through the limiting sleeve, and the guide plate and the guide pipe are rotatably connected.

[0010] Preferably, the steering motor is fixedly connected to the mounting plate via a support frame, the gear and the gear ring mesh with each other, the connecting rod passes through the support plate, and the connecting rod and the support plate are rotatably connected.

[0011] Preferably, the bottom end of the connecting rod is fixedly connected to the front end of the guide plate, the vertical part of the connecting rod is on the same straight line as the cylindrical protrusion structure at the rear end of the guide plate, and the rotation axis of the connecting rod and the support plate coincides with the rotation axis of the guide plate.

[0012] Beneficial effects This invention provides a ship's waterjet bow thruster device. Compared with the prior art, it has the following advantages: (1) The ship's waterjet bow thruster uses a thrust mode where a water pump draws water to generate a reaction force. The filter element is fitted into the bottom of the inlet pipe, and the limiting sleeve is connected to the inlet pipe by threads, which not only ensures the stable installation of the filter element but also facilitates subsequent disassembly and replacement. When the water pump starts to draw water, the water flow will first pass through the filter element, which can effectively intercept water plants, debris, and other impurities in the water, preventing them from entering the device and contacting the core power components. The cylindrical design of the filter element increases the filtration contact area, improving filtration efficiency while ensuring smooth water flow. The annular protrusion structure at the bottom of the limiting sleeve can firmly hold the filter element in place, preventing the filter element from shifting or falling off due to water flow impact, ensuring a continuous and stable filtration process, and blocking the possibility of debris entanglement in the core components from the source, thus avoiding thrust interruption due to jamming.

[0013] (2) The ship's waterjet bow thruster, including its steering motor, fine-tuning motor, and water pump, is mounted above a support plate. The support plate is connected to the mounting plate via bearings and is entirely located above the mounting plate in the water surface area, completely detached from the underwater environment. The steering motor is fixed to the mounting plate via a support frame, while the fine-tuning motor and water pump are directly fixed to the support plate. All core power and control components are within the reach of the ship's deck. During maintenance, operators do not need to go into the water and can directly inspect, maintain, or replace the motor and water pump on board. For filter elements that require regular cleaning, simply unscrew the limiting sleeve connected to the inlet pipe to remove the filter element for cleaning or replacement. The entire process does not require contact with the underwater parts. The reasonable coordination between the components, the mounting plate, and the support plate ensures that the core maintenance components are in easily accessible and operable positions, completely avoiding the maintenance difficulties caused by underwater motor installation and significantly reducing maintenance difficulty and operational risks. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the filter element installation structure of this utility model; Figure 3 This is a schematic diagram of the guide plate installation structure of this utility model; Figure 4 This is a schematic diagram of the connecting rod installation structure of this utility model; In the diagram: 1. Mounting plate; 2. Side push mechanism; 21. Drive assembly; 211. Bearing; 212. Support plate; 213. Water pump; 214. Inlet pipe; 215. Filter element; 216. Limiting sleeve; 217. Drain pipe; 218. Guide pipe; 219. Guide plate; 22. Adjustment assembly; 221. Support frame; 222. Steering motor; 223. Gear; 224. Gear ring; 225. Fine-tuning motor; 226. Connecting rod. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution: a ship's waterjet bow thruster includes a mounting plate 1, and a thrust mechanism 2 is arranged above the mounting plate 1 to provide lateral force. The thrust mechanism 2 includes: The drive assembly 21 includes a bearing 211 fixedly installed at the center of the mounting plate 1. A support plate 212 is fixedly installed inside the bearing 211. A water pump 213 is fixedly installed above the support plate 212. A water inlet pipe 214 is fixedly installed at the water inlet of the water pump 213. A filter element 215 is fitted into the bottom of the water inlet pipe 214. A limit sleeve 216 is movably installed on the outside of the water inlet pipe 214. A drain pipe 217 is fixedly installed at the water outlet of the water pump 213. A guide pipe 218 is fixedly installed at the bottom of the drain pipe 217. A guide plate 219 is movably installed at the front end of the guide pipe 218. The support plate 212 is rotatably connected to the mounting plate 1 via the bearing 211. The water inlet pipe 214 and the drain pipe 217 pass through the support plate 212. The inner wall of the bottom end of the limiting sleeve 216 is provided with an annular protrusion structure. The limiting sleeve 216 and the water inlet pipe 214 are connected by threads. The filter element 215 is cylindrical and is installed at the bottom end of the water inlet pipe 214 via the limiting sleeve 216. The guide plate 219 and the guide pipe 218 are rotatably connected.

[0017] Specifically, water is pumped in through the inlet pipe 214 by the water pump 213 above the support plate 212 and discharged into the guide pipe 218 through the drain pipe 217. The guide pipe 218 restricts the water flow to be discharged horizontally on the side of the ship, and the reaction force of the water flow on the drain pipe 217 when it is discharged provides lateral thrust to the ship.

[0018] Adjustment component 22, located above mounting plate 1, is used to adjust the direction of lateral force. Adjustment component 22 includes a support frame 221 fixedly mounted above mounting plate 1, a steering motor 222 fixedly mounted above support frame 221, a gear 223 fixedly mounted below the shaft of steering motor 222, a gear ring 224 fixedly mounted on the outer side of support plate 212, a fine-tuning motor 225 fixedly mounted above support plate 212, and a connecting rod 226 fixedly mounted below the shaft of fine-tuning motor 225. The steering motor 222 is fixedly connected to the mounting plate 1 via the support frame 221. The gear 223 meshes with the gear ring 224. The connecting rod 226 passes through the support plate 212 and is rotatably connected to the support plate 212. The bottom end of the connecting rod 226 is fixedly connected to the front end of the guide plate 219. The vertical part of the connecting rod 226 is on the same straight line as the cylindrical protrusion at the rear end of the guide plate 219. The rotation axis of the connecting rod 226 and the support plate 212 coincides with the rotation axis of the guide plate 219.

[0019] Specifically, since gear 223 and gear ring 224 mesh with each other, the steering motor 222 drives gear 223 to rotate, which in turn drives gear ring 224 to drive support disk 212 to rotate, thereby adjusting the overall orientation of drive assembly 21; the fine-tuning motor 225 drives connecting rod 226 to rotate, which in turn drives guide plate 219 to rotate, thereby achieving fine-tuning of the orientation of guide plate 219, further precisely adjusting the direction of water flow discharge, and ultimately changing the direction of lateral thrust. At the same time, all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0020] During operation, the side-pushing mechanism 2 above the mounting plate 1 is activated. The support plate 212 in the drive assembly 21 is rotatably connected to the mounting plate 1 via the bearing 211. The water pump 213 draws water in through the inlet pipe 214. The filter element 215 at the bottom of the inlet pipe 214 filters the water flow. The limiting sleeve 216 fixes the filter element 215 by threading it into the inlet pipe 214. The filtered water flows through the drain pipe 217 into the guide pipe 218. The steering motor 222 in the adjustment assembly 22 is fixed above the mounting plate 1 via the support frame 221. The steering motor 222 drives... Gear 223 rotates and meshes with the gear ring 224 on the outer side of the support disk 212, driving the support disk 212 to rotate as a whole to adjust the overall orientation of the drive assembly 21. At the same time, the fine-tuning motor 225 above the support disk 212 drives the connecting rod 226 to rotate. The connecting rod 226 is fixedly connected to the front end of the guide plate 219 and the rotation axis coincides, thereby driving the guide plate 219 to rotate at the front end of the guide pipe 218, accurately adjusting the direction of water flow discharge. The reaction force generated when the water flows out of the guide pipe 218 provides lateral force for the ship, realizing the lateral propulsion of the ship.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ship's waterjet bow thruster, comprising a mounting plate (1), characterized in that: A side-pushing mechanism (2) is provided above the mounting plate (1) to provide lateral force. The side-pushing mechanism (2) includes: The drive assembly (21) includes a bearing (211) fixedly installed at the center of the mounting plate (1). A support plate (212) is fixedly installed inside the bearing (211). A water pump (213) is fixedly installed above the support plate (212). A water inlet pipe (214) is fixedly installed at the inlet of the water pump (213). A filter element (215) is fitted into the bottom of the water inlet pipe (214). A limiting sleeve (216) is movably installed on the outside of the water inlet pipe (214). A drain pipe (217) is fixedly installed at the outlet of the water pump (213). A guide pipe (218) is fixedly installed at the bottom of the drain pipe (217). A guide plate (219) is movably installed at the front end of the guide pipe (218). Adjustment component (22), located above mounting plate (1), is used to adjust the direction of lateral force.

2. The ship's waterjet bow thruster according to claim 1, characterized in that: The adjustment assembly (22) includes a support frame (221) fixedly installed above the mounting plate (1), a steering motor (222) fixedly installed above the support frame (221), a gear (223) fixedly installed below the shaft of the steering motor (222), a gear ring (224) fixedly installed on the outer side of the support plate (212), a fine-tuning motor (225) fixedly installed above the support plate (212), and a connecting rod (226) fixedly installed below the shaft of the fine-tuning motor (225).

3. A ship waterjet bow thruster according to claim 1, characterized in that: The support plate (212) is rotatably connected to the mounting plate (1) via the bearing (211), and the water inlet pipe (214) and the drain pipe (217) pass through the support plate (212). The inner wall of the bottom end of the limiting sleeve (216) is provided with an annular protrusion structure.

4. A ship waterjet bow thruster according to claim 1, characterized in that: The limiting sleeve (216) and the water inlet pipe (214) are connected by threads. The filter element (215) is cylindrical and is installed at the bottom of the water inlet pipe (214) through the limiting sleeve (216). The guide plate (219) and the guide pipe (218) are connected by rotation.

5. A ship waterjet bow thruster according to claim 2, characterized in that: The steering motor (222) is fixedly connected to the mounting plate (1) via the support frame (221), the gear (223) meshes with the gear ring (224), the connecting rod (226) passes through the support plate (212), and the connecting rod (226) and the support plate (212) are rotatably connected.

6. A ship waterjet bow thruster according to claim 2, characterized in that: The bottom end of the connecting rod (226) is fixedly connected to the front end of the guide plate (219). The vertical part of the connecting rod (226) is on the same straight line as the columnar protrusion structure at the rear end of the guide plate (219), and the rotation axis of the connecting rod (226) and the support plate (212) coincides with the rotation axis of the guide plate (219).

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