Liftable ship propeller

Abstract

The invention discloses a liftable ship propeller, belongs to the field of ship propelling equipment, and aims to solve the problems of low thrust efficiency and inconvenience in reversing caused by fixed depth and direction of a traditional propeller. And a horizontal and vertical rotating gear linkage mechanism is arranged to realize 180-degree horizontal overturning. The device is mainly used for ship propulsion and backing under various load conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of ship propulsion equipment, and in particular to a liftable ship propeller. Background Art

[0002] Chinese patent CN118455159A discloses a hydraulic control system and control device for a lifting thruster. This solution uses a hydraulic cylinder to directly drive the thruster to rise and fall, and can adapt to different drafts. However, because the hydraulic system seal relies on high-precision matching, it is prone to leakage or jamming after seawater corrosion. In addition, the hydraulic components are expensive and require frequent maintenance, and the response speed cannot meet the needs of rapid scene switching.

[0003] Chinese utility model patent CN212373631U discloses a hydraulic lifting electric full-rotation thruster, which realizes lifting and full-rotation functions through the combination of hydraulic cylinders and electric motors. However, it uses separate hydraulic and electric drive systems, with low system integration, insufficient energy conversion efficiency, and complex coordinated control of multiple power sources, which increases the difficulty of ship electrical and hydraulic layout and failure points.

[0004] Therefore, the existing technology still lacks a solution with simple structure, mechanical reliability, and the ability to achieve propeller lifting and horizontal reverse flipping while ensuring sealing, which is particularly suitable for high-frequency start-stop and shallow water operation environments of small and medium-sized ships. Summary of the Invention

[0005] Traditional ship thrusters have a fixed structure, and the propeller cannot flexibly adjust its depth under different load conditions, resulting in reduced thrust efficiency and susceptibility to cavitation. Existing adjustable thrusters mostly rely on hydraulic or electric push rods, which are complex in structure, high in cost, and prone to failure, making them difficult to use reliably for a long time in the marine environment. At the same time, they lack a simple and reliable reverse function, which limits their maneuverability.

[0006] In view of the above technical problems, the present invention provides the following technical solutions: A liftable ship propeller comprises a propeller body (10), a lifting assembly (20) and a rotating assembly (30); the lifting assembly (20) is composed of a guide tube (21), a lifting guide frame (22), left and right racks (24L, 24R) and a center gear (23), and the center gear drives the two racks to move up and down synchronously, so as to realize the lifting and lowering of the propeller body (10) in the vertical direction; the rotating assembly (30) is arranged below the lifting guide frame (22), and comprises a horizontal rotating gear (31) and a vertical rotating gear (32), wherein the vertical rotating gear (32) is meshed with the horizontal rotating gear (31) on the side, and the horizontal rotating gear (31) is flipped around the horizontal axis by driving the vertical rotating gear (32), so that the propeller body (10) can realize 180° horizontal backward movement; the positioning locking mechanism (27) is used to lock the lifting guide frame (22) when the propeller is lifted or flipped to a predetermined position; The sealing member (28) is arranged between the guide conduit (21) and the lifting guide frame (22) to prevent seawater leakage.

[0007] Preferably, the guide conduit (21) is a rigid cylinder with an inner diameter slightly larger than the outer diameter of the lifting guide frame (22), and a sliding ring and a lubrication cavity are provided between the conduit and the guide frame to reduce friction and improve sealing performance.

[0008] Preferably, the positioning locking mechanism (27) comprises a plurality of positioning holes distributed on the side wall of the lifting guide frame and a latch with a spring return, which is inserted into the positioning hole manually or electrically to achieve rapid positioning and locking.

[0009] Preferably, the central gear (23), the horizontal rotating gear (31) and the vertical rotating gear (32) are all made of high-strength alloy material resistant to seawater corrosion, and are heat-treated and precisely ground to ensure meshing accuracy.

[0010] Preferably, an auxiliary guide rod can be provided to enhance the lateral stability of the lifting guide frame (22), so as to be suitable for use in severe sea conditions; preferably, the rotating assembly (30) can cooperate with a limit switch and a controller to realize electric automatic flipping and in-position shutdown control. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of the liftable ship propeller from a 45° perspective.

[0012] Figure 2 It is a schematic structural diagram of the lifting assembly (20) of the present invention.

[0013] Figure 3 It is a schematic structural diagram of the rotating assembly (30) of the present invention.

[0014] Figure 4 It is the front view of the propeller of the present invention.

[0015] Figure 5 It is a side view of the propeller of the present invention. DETAILED DESCRIPTION

[0016] The following describes in detail the structures and working principles of the three parts of the propeller body (10), the lifting assembly (20) and the rotating assembly (30) of the present invention in combination with the accompanying drawings and embodiments.

[0017] The propeller body (10) is connected to the ship's power system via a drive interface, and a propeller is fixedly mounted at the output end for converting power into propulsion. The present invention does not impose any specific restrictions on the power source and is compatible with internal combustion engines, electric motors, or hybrid power systems.

[0018] The lifting assembly (20) includes a guide tube (21), a lifting guide frame (22), a central gear (23), left and right racks (24L, 24R), a positioning locking mechanism (27) and a sealing member (28). The guide tube (21) is a vertically arranged rigid cylinder rigidly connected to the hull; the lifting guide frame (22) is sleeved in the guide tube (21) and rigidly connected to the lower end of the propeller body (10) through a flange or connecting bolts. The side walls of the lifting guide frame (22) are symmetrically mounted with racks (24L, 24R). The central gear (23) is installed between the two racks at the lower end of the guide frame. Its tooth surface engages with the left and right racks at the same time. After being driven, it can synchronously drive the lifting guide frame to move up and down along the guide tube, thereby realizing the lifting and lowering adjustment of the propeller body (10).

[0019] The rotating assembly (30) is installed below the lifting guide frame (22) and includes a horizontal rotating gear (31) and a vertical rotating gear (32). The horizontal rotating gear (31) is connected to the propeller body (10) through a bearing support, and is used to bear the weight of the propeller and realize the rotation output; the vertical rotating gear (32) is meshed with the side of the horizontal rotating gear (31). After being driven, the horizontal gear can be rotated 180 degrees around the horizontal axis to realize the horizontal reverse function of the propeller body (10).

[0020] The lifting assembly (20) and the rotating assembly (30) can be driven manually, mechanically or electrically, and can be automatically controlled in conjunction with limit switches and controllers to meet different operating requirements.

[0021] Those skilled in the art may make equivalent replacements or improvements to the above structures without departing from the spirit of the present invention, and all of these should be included in the protection scope of the present invention.

Claims

1. A liftable ship propeller, characterized in that: include: A propeller body (10), a lifting assembly (20), and a rotating assembly (30); the propeller body (10) includes a propeller and a drive interface connected to the propeller; the lifting assembly (20) includes a guide duct (21), a lifting guide frame (22), a center gear (23), left and right racks (24L, 24R), a positioning locking mechanism (27), and a sealing member (28); the guide duct (21) is arranged in a vertical direction and is rigidly connected to the hull structure; the lifting guide frame (22) is sleeved in the guide duct (21) and is rigidly connected to the lower end of the propeller body (10), and a rack (24L, 24R) arranged in a vertical direction is provided on each side of the lifting guide frame (22); the center gear (23) is located between the two racks (24L, 24R) and meshes with the left and right racks at the same time, and the center gear (23) drives the left and right racks to move synchronously to control the lifting and lowering of the propeller body (10); The rotating assembly (30) is arranged below the lifting guide frame (22), and includes a horizontal rotating gear (31) and a vertical rotating gear (32), wherein the vertical rotating gear (32) is engaged with the side of the horizontal rotating gear (31). By controlling the rotation of the vertical rotating gear (32), the horizontal rotating gear (31) is rotated around the horizontal axis, thereby realizing the horizontal 180° rotation of the propeller body (10); the positioning locking mechanism (27) includes a plurality of positioning holes and latches arranged on the outside of the lifting guide frame (22); the sealing member (28) is arranged between the inner wall of the guide tube (21) and the outside of the lifting guide frame (22).

2. The liftable ship propulsion device according to claim 1, characterized in that: The guide conduit (21) is a cylindrical tube with an inner diameter slightly larger than the outer diameter of the lifting guide frame (22). The lifting guide frame (22) and the guide conduit (21) are matched through a sliding ring and a lubrication cavity is reserved.

3. The liftable ship propulsion device according to claim 1, characterized in that: The positioning holes are distributed equidistantly in the vertical direction outside the lifting guide frame (22), and the latch is a cylindrical pin rod.

4. The liftable ship propulsion device according to claim 1, characterized in that: The central gear (23), the horizontal rotating gear (31) and the vertical rotating gear (32) are all made of high-strength alloy material.

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