Folding type full-revolving propeller

Abstract

The invention discloses a folding type full-revolving propeller in the technical field of propellers. The folding type full-revolving propeller comprises a folding barrel and a steering oar body. The folding cylinder is provided with a fixed end of a folding oil cylinder, an extending end of the folding oil cylinder is connected with the steering oar body through a folding arm lifting lug, and the folding arm lifting lug drives the steering oar body to be lifted into the folding cylinder or put down along with stretching and retracting of the folding oil cylinder; the steering oar body comprises an upper gearbox assembly and a lower gearbox assembly which are connected to the main transmission vertical shaft assembly. A main transmission input shaft system and a steering input shaft system are arranged on the upper gearbox assembly; the output end of the main transmission input shaft system is connected with a propeller through a main transmission vertical shaft assembly. The output end of the steering input shaft system is connected with the lower gearbox assembly through a steering pipe. According to the invention, three functions of steering, speed regulation and folding are integrated, the overall structure integration degree is high, the adaptability is high, and a better scheme is provided for a DP dynamic positioning ship.

Description

Technical Field

[0001] The present invention belongs to the technical field of propellers, and more specifically, relates to a foldable full-rotation propeller. Background Art

[0002] For ships equipped with DP2 dynamic positioning, bow positioning requires thrusters to be achieved. The current solutions are either to add lateral thrusters or retractable full-rotation thrusters to achieve this.

[0003] In the current existing technology, lateral thrusters can only provide lateral force. Under the same positioning requirements, the input power of lateral thrusters will be greater and the number will be greater. Although telescopic azimuth thrusters can reduce the input power and the number of thrusters, the height of telescopic azimuth thrusters is relatively high, and general ships cannot meet the installation requirements of this type of thrusters. Summary of the invention

[0004] The purpose of the present invention is to provide a foldable full-rotation propeller in view of the above shortcomings, which integrates the three functions of steering, speed regulation and folding, has a high degree of integration and high adaptability.

[0005] To achieve the above object, the present invention is implemented by the following technical solutions: The present invention provides a foldable full-rotation propeller, comprising a foldable cylinder and a rudder propeller body; The fixed end of the folding cylinder is installed on the folding cylinder, and the extended end of the folding cylinder is connected to the steering propeller body through the folding arm lifting ear. The folding arm lifting ear drives the steering propeller body to be lifted into the folding cylinder or lowered as the folding cylinder is extended and retracted. The rudder propeller body includes an upper gearbox assembly and a lower gearbox assembly connected to the main transmission vertical shaft assembly; the upper gearbox assembly is provided with a main transmission input shaft system and a steering input shaft system; the input end of the main transmission input shaft system is connected to the prime mover through a shift fork coupling, and the output end is connected to the propeller through the main transmission vertical shaft assembly; the output end of the steering input shaft system is connected to the lower gearbox assembly through a steering tube.

[0006] Furthermore, the folding arm lifting ears are fixedly connected to both sides of the box body of the upper gear box assembly, and support members are provided on both sides of the box body of the upper gear box assembly, and the support members are connected to the hull through a rotating shaft.

[0007] Furthermore, a lifting limit mechanism and a lowering limit mechanism are provided in the folding cylinder to realize the positioning of the rudder propeller body in different states.

[0008] Furthermore, the lifting limit mechanism includes a lifting hydraulic latch, which connects the rudder propeller body and the upper base in the folding cylinder to achieve positioning of the rudder propeller body in the lifted state; The lowering limiting mechanism comprises a lowering hydraulic latch, and the lowering hydraulic latch connects the rudder propeller body and the side base in the folding cylinder to realize the positioning of the rudder propeller body in the lowering state.

[0009] Furthermore, the output end of the main transmission input shaft system is meshed with the main transmission output shaft system, and the main transmission output shaft system is connected to the main transmission vertical shaft assembly through a spline.

[0010] Furthermore, the main transmission vertical shaft assembly is connected to a lower gear shaft in a lower gear box assembly, and the lower gear shaft is meshed with a propeller shaft of a propeller through a spiral bevel gear.

[0011] Furthermore, the input end of the steering input shaft system is connected to the hydraulic motor, and the output end is connected to the steering tube; the steering tube is sleeved outside the main transmission vertical shaft assembly, the top of the steering tube is transmission-connected to the steering input shaft system, and the bottom is fixedly connected to the housing of the lower gear box assembly; driven by the hydraulic motor, the steering tube and the lower gear box assembly rotate 360° around the center of the main transmission vertical shaft assembly.

[0012] Furthermore, a spiral bevel gear is provided on the steering input shaft system, and a steering output bevel gear is provided on the top of the steering tube. The spiral bevel gear meshes with the steering output bevel gear to transmit torque.

[0013] Furthermore, the upper gear box assembly also includes a screw pump and a well pipe. The screw pump is mounted on the main transmission vertical shaft assembly to transport the lubricating oil of the lower gear box assembly to the well pipe. The lubricating oil in the well pipe drops into the lower gear box assembly by gravity, forming an up and down circulation. During the circulation process, heat is exchanged between the box body of the lower gear box assembly and the seawater to achieve cooling of the lubricating oil.

[0014] Furthermore, a stern seal assembly is provided between the propeller shaft and the housing of the lower gearbox assembly, and the stern seal assembly includes a seal housing and a stern shaft lip seal, the seal housing is of a split type, and the stern shaft lip seal is of a split type.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The foldable full-rotation propeller of the present invention integrates the three functions of steering, speed regulation and folding through the layout and connection of various components. It can rotate 360 ​​degrees around the vertical axis and be propelled by a propeller. The thrust can be changed by adjusting the motor speed of the power input. It can be folded 90 degrees and put down to be used as a rudder propeller when in use, and folded into the hull structure when not in use. The overall structure has a high degree of integration and high adaptability, providing a better solution for DP dynamic positioning ships. The present invention has a high degree of integration. The foldable full-rotation propeller includes a foldable cylinder. After delivery, the foldable cylinder is welded to the hull and powered on for use. Except for the connection part of the prime mover in the engine room, other parts are underwater, occupying little space in the engine room. The overall height is low, the requirements for ship installation are low, and the application range is wide. In the present invention, the shaft systems are meshed with spiral bevel gears, and the steering actuator is a spiral bevel gear with high load-bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the appearance structure of a foldable full-rotation propeller provided in an embodiment of the present invention; Figure 2 for Figure 1 A side view of the foldable azimuth thruster shown; Figure 3 It is a schematic diagram of the internal structure of the rudder propeller body described in the embodiment.

[0017] In the figure: 1. Folding cylinder; 2. Folding cylinder; 3. Lifting hydraulic latch; 4. Lowering hydraulic latch; 5. Folding arm lifting eye; 6. Fork coupling; 7. Upper gearbox assembly; 8. Well casing pipe; 9. Lower gearbox assembly; 10. Stern seal assembly; 11. Propeller; 12. Main transmission input shaft system; 13. Main transmission output shaft system; 14. Main transmission vertical shaft assembly; 15. Screw pump; 16. Steering input shaft system; 17. Steering output bevel gear; 18. Steering tube. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention will be described in more detail below in conjunction with the accompanying drawings and specific examples.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0021] Example 1 like Figure 1 and Figure 2 As shown, this embodiment provides a foldable full-turn propeller, including a foldable cylinder 1 and a steering propeller body. The fixed end of the foldable cylinder 2 is installed on the foldable cylinder 1, and the extended end of the foldable cylinder 2 is connected to the steering propeller body through a folding arm ear 5. The folding arm ear 5 drives the steering propeller body to be lifted into the foldable cylinder 1 or lowered as the folding cylinder 2 is extended and retracted; the foldable cylinder 1 is provided with a lifting hydraulic latch 3 and a lowering hydraulic latch 4; the steering propeller body is connected to the prime mover through a fork coupling 6.

[0022] In this embodiment, the folding cylinder 1 is not only a foldable and fully rotating recovery cylinder, but also a part of the hull. After delivery, the folding cylinder 1 is welded to the hull; the bottom and side of the steering propeller body are provided with connecting ears, and the folding cylinder 1 is provided with an upper base and a side base corresponding to the position of the connecting ears when the steering propeller body is folded and lowered. When in use, release and lift the hydraulic latch 3, the folding cylinder 2 is actuated, and the steering propeller body is folded 90° through the folding arm lifting ear 5. After reaching the position, the hydraulic latch 4 is lowered and actuated, and the latch connects the connecting ears at the bottom of the steering propeller body and the upper base in the folding cylinder 1 together, and the fork coupling 6 is engaged, and it can be used after the prime mover is connected; when not in use, the fork coupling 6 is disengaged, the hydraulic latch 4 is lowered and the pin is pulled out, the folding cylinder 2 is actuated, and the steering propeller body is folded 90° upward into the folding cylinder 1 through the folding arm lifting ear 5, and the hydraulic latch 3 is lifted and actuated, and the latch connects the connecting ears on the side of the steering propeller body and the side base in the folding cylinder 1 together.

[0023] Under the action of hydraulic oil, the outer gear sleeve of the fork coupling 6 can be moved into the inner gear sleeve (closed), and the prime mover can drive the propeller 11 to rotate; when folding is required, the hydraulic oil drives the outer gear sleeve to move out of the inner gear sleeve (disengaged), and the motor (prime mover) is not affected during the folding process.

[0024] In this embodiment, Figure 3As shown, the rudder propeller body includes an upper gearbox assembly 7 and a lower gearbox assembly 9 connected to a main transmission vertical shaft assembly 14; the upper gearbox assembly 7 is provided with a main transmission input shaft system 12 and a steering input shaft system 16; the input end of the main transmission input shaft system 12 is connected to the prime mover through a shift fork coupling 6, and the output end is connected to the propeller 11 through the main transmission vertical shaft assembly 14; the input end of the steering input shaft system 16 is connected to a hydraulic motor, and the output end is connected to the lower gearbox assembly 9 through a steering tube 18, and the steering tube 18 is sleeved outside the main transmission vertical shaft assembly 14.

[0025] After the shift fork coupling 6 is arranged, the torque of the prime mover is transmitted to the propeller 11 through the main transmission input shaft system 12 and the main transmission vertical shaft assembly 14, and the thrust of the propeller is adjusted by changing the speed of the prime mover; the hydraulic motor drives the steering input shaft system 16, and then drives the steering tube 18 and the lower gear box assembly 9 to rotate 360° around the center of the main transmission vertical shaft assembly 14.

[0026] Example 2 This embodiment provides a foldable full-rotation propeller. On the basis of Embodiment 1, the technical solution is further refined to achieve a more beneficial technical effect. For the contents not fully described in this embodiment, please refer to Embodiment 1.

[0027] like Figure 1 As shown, in this embodiment, the folding arm lifting ears 5 are fixedly connected to both sides of the box body of the upper gear box assembly 7. Support members are provided on both sides of the box body of the upper gear box assembly 7. The support members are connected to the hull through a rotating shaft. When folding is required, the fork coupling 6 is disengaged, the lowered hydraulic pin 4 is disengaged, and the folding cylinder 2 pushes the two folding arm lifting ears 5 around the rotating shaft to fold the entire rudder propeller 90°.

[0028] like Figure 3 As shown, in this embodiment, the output end of the main transmission input shaft system 12 is meshed with the main transmission output shaft system 13 through a spiral bevel gear, and the main transmission output shaft system 13 is connected to the main transmission vertical shaft assembly 14 through a spline, and the main transmission vertical shaft assembly 14 is connected to the lower gear shaft in the lower gear box assembly 9, and the lower gear shaft is meshed with the propeller shaft of the propeller 11 through a spiral bevel gear. The prime mover torque is transmitted to the propeller 11 through the main transmission input shaft system 12, the main transmission output shaft system 13, the main transmission vertical shaft assembly 14, the lower gear shaft and the propeller shaft, so as to change the thrust of the propeller 11 by adjusting the motor speed of the prime mover.

[0029] In this embodiment, a spiral bevel gear is provided on the steering input shaft system 16, and a steering output bevel gear is provided on the top of the steering tube 18. The spiral bevel gear is meshed with the steering output bevel gear to transmit torque. The steering tube 18 is connected to the lower gear box assembly 9 by bolts, so that the hydraulic motor can drive the steering tube 18 and the lower gear box assembly 9 to rotate 360° around the center of the main transmission vertical shaft assembly 14.

[0030] In this embodiment, the upper gearbox assembly 7 further includes a screw pump 15 and a well surrounding pipe 8. The screw pump 15 (oil pressure screw, equivalent to a pump) is mounted on the main transmission vertical shaft assembly 14. After the main transmission vertical shaft assembly 14 rotates, the screw pump 15 generates pressure to press the lubricating oil of the lower gearbox assembly 9 into the well surrounding pipe 8 through the inner hole of the steering tube 18. The lubricating oil in the well surrounding pipe 8 falls into the lower gearbox assembly 9 by gravity, forming an up-and-down circulation. The housing of the lower gearbox assembly 9 contacts the seawater, and heat is exchanged between the housing of the lower gearbox assembly 9 and the seawater during the circulation process to achieve cooling of the lubricating oil.

[0031] In this embodiment, a stern seal assembly 10 is provided between the propeller shaft of the propeller 11 and the housing of the lower gear box assembly 9. The stern seal assembly 10 includes a sealing shell and a stern shaft lip seal. The sealing shell adopts a split type, and the stern shaft lip seal adopts a split seal. Without removing the propeller shaft or the propeller 11, the lip seal at any position can be replaced, thereby improving the sealing reliability and the removal and replacement efficiency.

[0032] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Without departing from the scope and technical principles of the described embodiments, many modifications and changes are obvious to those of ordinary skill in the art, and these modifications and changes should also be regarded as the scope of protection of the present invention.

Claims

1. A foldable full-rotation propeller, characterized in that: It comprises a folding cylinder (1) and a steering propeller body; The fixed end of the folding cylinder (1) is mounted on the folding cylinder (1), and the extended end of the folding cylinder (1) is connected to the steering propeller body via a folding arm lifting ear (2). The folding arm lifting ear (2) drives the steering propeller body to be lifted into the folding cylinder (1) or lowered as the folding cylinder (1) is extended or retracted. The rudder propeller body comprises an upper gearbox assembly (7) and a lower gearbox assembly (9) connected to a main transmission vertical shaft assembly (14); the upper gearbox assembly (7) is provided with a main transmission input shaft system (12) and a steering input shaft system (16); the input end of the main transmission input shaft system (12) is connected to a prime mover via a shift fork coupling (6), and the output end is connected to a propeller (11) via the main transmission vertical shaft assembly (14); the output end of the steering input shaft system (16) is connected to the lower gearbox assembly (9) via a steering tube (18).

2. The foldable full-rotation propeller according to claim 1, characterized in that: The folding arm lifting ears (5) are fixedly connected to two sides of the box body of the upper gear box assembly (7), and support members are provided on both sides of the box body of the upper gear box assembly (7), and the support members are connected to the hull through a rotating shaft.

3. The foldable full-rotation propeller according to claim 1, characterized in that: The folding cylinder (1) is provided with a lifting limit mechanism and a lowering limit mechanism for realizing the positioning of the rudder propeller body in different states.

4. The foldable full-rotation propeller according to claim 3, characterized in that: The lifting limit mechanism comprises a lifting hydraulic latch (3), wherein the lifting hydraulic latch (3) connects the steering propeller body and the upper base in the folding cylinder (1) to achieve positioning of the steering propeller body in the lifted state; The lowering limiting mechanism comprises a lowering hydraulic latch (4), wherein the lowering hydraulic latch (4) connects the steering propeller body and a side base in the folding cylinder (1) to achieve positioning of the steering propeller body in the lowered state.

5. The foldable full-rotation propeller according to claim 1, characterized in that: The output end of the main transmission input shaft system (12) is meshed with the main transmission output shaft system (13), and the main transmission output shaft system (13) is connected to the main transmission vertical shaft assembly (14) via a spline.

6. The foldable full-rotation propeller according to claim 5, characterized in that: The main transmission vertical shaft assembly (14) is connected to a lower gear shaft in a lower gear box assembly (9), and the lower gear shaft is meshed with a propeller shaft of a propeller (11) via a spiral bevel gear.

7. The foldable full-rotation propeller according to claim 1, characterized in that: The input end of the steering input shaft system (16) is connected to the hydraulic motor, and the output end is connected to the steering tube (18); the steering tube (18) is sleeved outside the main transmission vertical shaft assembly (14), the top of the steering tube (18) is drivingly connected to the steering input shaft system (16), and the bottom is fixedly connected to the housing of the lower gear box assembly (9); under the drive of the hydraulic motor, the steering tube (18) and the lower gear box assembly (9) rotate 360 ​​degrees around the center of the main transmission vertical shaft assembly (14).

8. The foldable full-rotation propeller according to claim 7, characterized in that: A spiral bevel gear is provided on the steering input shaft system (16), a steering output bevel gear (17) is provided on the top of the steering tube (18), and the spiral bevel gear meshes with the steering output bevel gear (17) to transmit torque.

9. The foldable full-rotation propeller according to claim 1, characterized in that: The upper gearbox assembly (7) further comprises a screw pump (15) and a well surrounding pipe (8). The screw pump (15) is mounted on the main transmission vertical shaft assembly (14) to transport lubricating oil from the lower gearbox assembly (9) to the well surrounding pipe (8). The lubricating oil in the well surrounding pipe (8) descends into the lower gearbox assembly (9) by gravity, forming an up-and-down circulation.

10. The foldable full-rotation propeller according to claim 1, characterized in that: A stern seal assembly (10) is provided between the propeller shaft of the propeller (11) and the housing of the lower gearbox assembly (9), the stern seal assembly (10) comprising a seal housing and a stern shaft lip seal, the seal housing being of a split type, and the stern shaft lip seal being of a split type.

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