Shallow draft water pump jet type full-revolving propeller

Abstract

The invention discloses a shallow draft water pump jet type full-revolving propeller, and relates to the technical field of marine instruments, the shallow draft water pump jet type full-revolving propeller comprises an upper gearbox assembly, a well box assembly and a rotating cylinder assembly which are sequentially arranged from top to bottom, a transmission assembly is arranged in the upper gearbox assembly, and the output end of the transmission assembly is connected with one end of a propeller shaft; the other end of the propeller shaft extends into the rotating cylinder assembly to be connected with a propeller, and the rotating cylinder assembly is provided with an opening; a water outlet is further formed in one side of the lower portion of the rotating cylinder assembly, an electric rotating unit is arranged on the well box assembly, a rotating gear is arranged in the well box assembly and connected with the rotating cylinder assembly, and the electric rotating unit can drive the rotating gear and the rotating cylinder assembly to rotate together so as to control the drainage direction of the water outlet. The minimum immersion depth of reliable operation under the full thrust is only 150-750 mm, 360-degree rotation can be achieved, all-directional thrust is provided, and stable and comfortable operation is achieved while excellent maneuvering performance is guaranteed.

Description

Technical Field

[0001] The invention relates to a shallow-draft pump-jet type full-rotation propeller, belonging to the technical field of marine equipment. Background Art

[0002] Traditional full-revolving propellers are often arranged in a horizontal direction, relying on the thrust generated by the propeller to achieve the forward and backward movement of the ship. They have good maneuverability and are widely used in DP ships. However, horizontally arranged propellers require that the center line of the propeller be a certain distance from the waterline. If the distance is not enough, cavitation and vibration are likely to occur, and the efficiency of the propeller will also be greatly affected.

[0003] Therefore, many ships sailing in shallow draft waters cannot use traditional azimuth thrusters, which are prone to run aground or hit reefs. Summary of the invention

[0004] The object of the present invention is to overcome the deficiencies in the prior art and to provide a shallow draft pump-jet fully revolving thruster which can operate reliably under full thrust with a minimum immersion depth of only 150 to 750 mm, can be driven by a diesel engine or an electric motor, and can also rotate 360° to provide all-round thrust, ensuring excellent maneuverability while running smoothly and comfortably.

[0005] To achieve the above object, the present invention is implemented by adopting the following technical solutions: The present invention provides a shallow draft pump-jet full-rotation propeller, comprising an upper gearbox assembly, a well box assembly and a rotating barrel assembly arranged in sequence from top to bottom, a transmission assembly is arranged inside the upper gearbox assembly, an output end of the transmission assembly is connected to one end of a propeller shaft, the other end of the propeller shaft extends to the inside of the rotating barrel assembly and is connected to a propeller, the rotating barrel assembly is provided with an opening, the transmission assembly can drive the propeller shaft and the propeller to rotate together, so that water flows into the inside of the rotating barrel assembly through the opening; A water outlet is also provided on one side of the lower part of the rotating drum assembly. An electric rotary unit is provided on the well box assembly, and a rotary gear is provided inside. The rotary gear is connected to the rotating drum assembly. The electric rotary unit can drive the rotary gear and the rotating drum assembly to rotate together to control the drainage direction of the water outlet.

[0006] Furthermore, the transmission assembly includes an input shaft and an output shaft, one end of the input shaft is arranged on the outside of the upper gear box assembly, and the other end passes through the side of the upper gear box assembly to extend to the interior of the upper gear box assembly and is connected to the first transmission wheel, the upper end of the output shaft is connected to the top of the upper gear box assembly, and a second transmission wheel is circumferentially sleeved, the first transmission wheel and the second transmission wheel are meshed, and the lower end of the output shaft is connected to the propeller shaft through a coupling.

[0007] Furthermore, a push-in bearing is sleeved on the propeller shaft, and the push-in bearing is connected to the upper gear box assembly.

[0008] Furthermore, a stern seal assembly is provided on the propeller shaft below the push-in bearing, and the stern seal assembly is used to seal the hydraulic oil in the upper gear box.

[0009] Furthermore, the electric rotary unit includes a driving motor, a reducer and a rotary spur gear, the output end of the driving motor is connected to the reducer, the output end of the reducer is connected to the rotary spur gear, and the rotary spur gear is meshed with the rotary gear.

[0010] Furthermore, the slewing gear is sleeved on a slewing bearing, and the slewing bearing is arranged in the well box assembly through bolts.

[0011] Furthermore, a first steering bushing is connected between the slewing gear and the rotating cylinder assembly by bolts, a second steering bushing is sleeved inside the first steering bushing, and the second steering bushing is connected to the well box assembly by bolts.

[0012] Furthermore, an outer rudder seal is provided on the outside of the first rudder bushing, and an inner rudder seal is provided on the outside of the second rudder bushing. The outer rudder seal is used to prevent water from penetrating into the propeller, and the inner rudder seal is used to prevent hydraulic oil leakage inside the propeller.

[0013] Furthermore, the opening is provided with a water inlet grille, and the water inlet grille is used to prevent foreign matter in the water from entering the interior of the rotating drum assembly.

[0014] Furthermore, the water flow from the water outlet is discharged at an angle of 15°.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The pump-jet azimuth propeller provided by the present invention can realize hull propulsion and steering, and can meet the requirements of sailing in extremely shallow waters. The minimum immersion depth of reliable operation under full thrust is only 150-750 mm; The propeller of the present invention absorbs water from bottom to top through the water inlet grid into the rotating drum assembly, converting kinetic energy into pressure energy. As the water collected in the rotating drum assembly continues to increase, the pressure gradually increases, and the water is finally discharged from the water outlet at an angle of 15°, thereby generating a 360° steering thrust, which cooperates with the control of the electric slewing unit to achieve hull propulsion and steering; The present invention is provided with multiple seals, such as rudder seals on the inside and outside, which effectively protect the propeller as a whole, can prevent the hydraulic oil inside the propeller from leaking, and can prevent water from penetrating into the inside of the propeller, and has a good sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a shallow draft pump-jet type full-rotation propeller in one embodiment of the present invention; Figure 2 It is a partial enlarged structural schematic diagram of the connection between the slewing bearing and the rotating cylinder assembly of a shallow draft pump-jet type full-slewing propeller in one embodiment of the present invention; Figure 3 It is a schematic diagram of the water flow intake start stage of a shallow draft pump-jet type full-revolving propeller in one embodiment of the present invention; Figure 4 It is a schematic diagram of the water flow operation phase I of a shallow draft pump-jet azimuth propeller in one embodiment of the present invention; Figure 5 It is a schematic diagram of the water flow operation stage II of a shallow draft pump-jet azimuth propeller in one embodiment of the present invention; Figure 6 It is a schematic diagram of the water outflow stage of a shallow draft pump-jet type full-rotation propeller in one embodiment of the present invention; In the figure: 1-upper gearbox assembly, 2-well box assembly, 3-rotating cylinder assembly, 4-input shaft, 5-output shaft, 6-first transmission wheel, 7-second transmission wheel, 8-coupling, 9-propeller shaft, 10-propeller, 11-electric slewing unit, 111-driving motor, 112-reducer, 113-slewing spur gear, 12-slewing gear, 13-first steering bushing, 14-second steering bushing, 15-outer steering seal, 16-inner steering seal, 17-stern seal assembly, 18-push-in bearing, 19-water inlet grille, 20 slewing bearing. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention. Example 1

[0018] like Figure 1 As shown, an embodiment of the present invention provides a shallow draft pump-jet full-rotation propeller, comprising an upper gearbox assembly 1, a well box assembly 2 and a rotating cylinder assembly 3 arranged in sequence from top to bottom, wherein the well box assembly 2 is connected to the hull.

[0019] The upper gearbox assembly 1 is provided with a transmission assembly, which specifically includes an input shaft 4 and an output shaft 5. The input shaft 4 is horizontally arranged on the side of the upper gearbox assembly 1, one end of which is arranged outside the upper gearbox assembly 1, and the other end is arranged inside the upper gearbox assembly 1 and connected to the first transmission wheel 6. The output shaft 5 is vertically arranged inside the upper gearbox assembly 1, and its upper end is connected to the inner top of the upper gearbox assembly 1, and the lower end is connected to the propeller shaft 9 through a coupling 8. A second transmission wheel 7 is circumferentially sleeved on the side of the output shaft 5, and the first transmission wheel 6 and the second transmission wheel 7 are meshed. A propeller 10 is arranged at the lower end of the propeller shaft 9, and the propeller 10 is finally rotated by the input shaft 4, the first transmission wheel 6, the second transmission wheel 7, the output shaft 5, the propeller shaft 9, and the propeller 10.

[0020] The propeller 10 is located in the rotating cylinder assembly 3, and a push-in bearing 18 is sleeved on the propeller shaft 9 located above the propeller 10, and the upper gearbox assembly 1 is connected to the push-in bearing 18. In some embodiments, a stern seal assembly 17 is provided on the propeller shaft below the push-in bearing 18, and the stern seal assembly 17 can seal the contact surface between the push-in bearing 18 and the propeller shaft 9 to prevent leakage of hydraulic oil in the upper gearbox assembly 1.

[0021] The well box assembly 2 is provided with an electric rotary unit 11, which includes a driving motor 111, a reducer 112 and a rotary spur gear 113. The output end of the driving motor 111 is connected to the reducer 112, and the output end of the reducer 112 is connected to the rotary spur gear 113. The rotary gear 12 is arranged in the well box assembly 2 and sleeved on the rotary bearing 20. In this embodiment, the rotary bearing 20 is connected to the well box assembly 2 by bolts, and the rotary spur gear 113 is meshed with the rotary gear 12. The rotary gear 12 is connected to the rotating drum assembly 3, driven by the driving motor 111, and transmitted by the reducer 112 and the rotary spur gear 113, so that the rotary gear 12 and the rotating drum assembly 3 can be driven to rotate together.

[0022] The interior of the rotating drum assembly 3 presents a symmetrical structure, with a water outlet on one side of the lower part, and an opening directly below the propeller, which is used to facilitate the propeller 10 to suck water through the opening. In some embodiments, the opening is equipped with a water inlet grille 19, which can effectively prevent foreign matter in the water from flowing into the rotating drum assembly 3 and affecting the operation of the propeller 10. Example 2

[0023] like Figure 2 As shown, based on Example 1, this embodiment provides a first steering bushing 13 between the slewing gear 12 and the rotating cylinder assembly 3. In this embodiment, the upper and lower parts of the first steering bushing 13 are connected to the slewing gear 12 and the rotating cylinder assembly 3 respectively by bolts.

[0024] A second steering bushing 14 is provided inside the first steering bushing 13, and the second steering bushing 14 is connected to the well box assembly 2 by bolts. An outer steering seal 15 is provided outside the first steering bushing 13, and an inner steering seal 16 is provided outside the second steering bushing 14, wherein the outer steering seal 15 can prevent water from penetrating into the propeller, and the inner steering seal 16 can prevent hydraulic oil leakage inside the propeller, and the sealing effect is significantly improved compared with the traditional propeller which is only provided with a single layer of seal.

[0025] The working principle of the present invention is: Combination Figures 3 to 6 , driving the input shaft 4 to rotate, and then transmitting in sequence through the first transmission wheel 6, the second transmission wheel 7, the output shaft 5, and the propeller shaft, thereby driving the propeller 10 to rotate and controlling the speed of the propeller 10. The higher the speed, the greater the thrust, thereby changing the forward and backward speeds of the ship.

[0026] The rotation of the propeller 10 causes the water flow to be sucked in from the bottom to the top through the opening, and then flows to both sides through the gap between the propeller 10 and the rotating drum assembly 3. As the water collected in the rotating drum assembly 3 continues to increase, the pressure gradually increases, and finally the water is discharged from the water outlet at an angle of 15°. During the water flow operation, the operator drives the driving motor 111, which is driven by the reducer 112, the rotary spur gear 113, and the rotary bearing 12, so that the rotary bearing 12 and the rotating drum assembly 3 rotate together, thereby generating a 360° steering thrust to achieve the steering of the propulsion device.

[0027] The steering angle control method includes: the actual steering angle is fed back to the remote control system, and the system proportionally adjusts the drive motor 111 electrically according to the difference between the actual position of the propulsion device and the required position, thereby realizing closed-loop control, that is, completing the predetermined steering of the hull.

[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A shallow draft pump-jet type full-rotation propeller, characterized in that: It includes an upper gearbox assembly, a well box assembly and a rotating drum assembly which are arranged in sequence from top to bottom, a transmission assembly is arranged inside the upper gearbox assembly, an output end of the transmission assembly is connected to one end of the propeller shaft, the other end of the propeller shaft extends to the inside of the rotating drum assembly and is connected to the propeller, the rotating drum assembly is provided with an opening, the transmission assembly can drive the propeller shaft and the propeller to rotate together, so that water flows into the inside of the rotating drum assembly through the opening; A water outlet is also provided on one side of the lower part of the rotating drum assembly. An electric rotary unit is provided on the well box assembly, and a rotary gear is provided inside. The rotary gear is connected to the rotating drum assembly. The electric rotary unit can drive the rotary gear and the rotating drum assembly to rotate together to control the drainage direction of the water outlet.

2. The shallow draft pump-jet azimuth propeller according to claim 1, characterized in that: The transmission assembly includes an input shaft and an output shaft, one end of the input shaft is arranged on the outside of the upper gear box assembly, and the other end passes through the side of the upper gear box assembly to extend to the inside of the upper gear box assembly and is connected to the first transmission wheel, the upper end of the output shaft is connected to the top of the upper gear box assembly, and a second transmission wheel is circumferentially sleeved, the first transmission wheel and the second transmission wheel are meshed, and the lower end of the output shaft is connected to the propeller shaft through a coupling.

3. The shallow draft pump-jet full-rotation propeller according to claim 1, characterized in that: A push-in bearing is sleeved on the propeller shaft, and the push-in bearing is connected to the upper gear box assembly.

4. The shallow draft pump-jet type full-rotation propeller according to claim 3, characterized in that: A stern seal assembly is provided on the propeller shaft below the push-in bearing, and the stern seal assembly is used to seal the hydraulic oil in the upper gear box assembly.

5. The shallow draft pump-jet azimuth propeller according to claim 1, characterized in that: The electric rotary unit comprises a driving motor, a reducer and a rotary spur gear, the output end of the driving motor is connected to the reducer, the output end of the reducer is connected to the rotary spur gear, and the rotary spur gear is meshed with the rotary gear.

6. The shallow draft pump-jet type full-rotation propeller according to claim 1, characterized in that: The rotary gear is sleeved on a rotary bearing, and the rotary bearing is arranged in the well box assembly through bolts.

7. The shallow draft pump-jet type full-rotation propeller according to claim 1, characterized in that: A first steering bushing is connected between the slewing gear and the rotating cylinder assembly via bolts, a second steering bushing is sleeved inside the first steering bushing, and the second steering bushing is connected to the well box assembly via bolts.

8. The shallow draft pump-jet type full-rotation propeller according to claim 7, characterized in that: An outer rudder seal is provided on the outside of the first rudder bushing, and an inner rudder seal is provided on the outside of the second rudder bushing. The outer rudder seal is used to prevent water from penetrating into the propeller, and the inner rudder seal is used to prevent hydraulic oil leakage inside the propeller.

9. The shallow draft pump-jet type full-rotation propeller according to claim 1, characterized in that: The opening is provided with a water inlet grille, and the water inlet grille is used to prevent foreign matter in the water from entering the interior of the rotating drum assembly.

10. The shallow draft pump-jet azimuth propeller according to claim 1, characterized in that: The water flow from the water outlet is discharged at an angle of 15°.

Images