Underwater power assembly of propeller

Abstract

The utility model discloses an underwater power assembly of a thruster. The underwater power assembly comprises a machine shell, a power motor arranged in the machine shell and a propeller connected with the power motor and driven by the power motor to rotate. The power motor is provided with a rotatable power shaft; the underwater power assembly of the propeller further comprises a speed reducer arranged in the machine shell, and the speed reducer is connected with a power shaft of the power motor. One end of the speed reduction shaft is connected with the speed reducer, the other end of the speed reduction shaft is fixedly connected with the propeller, and the propeller rotates along with the speed reduction shaft; the speed reducer outputs rotation of the power shaft to the speed reduction shaft and enables the rotation speed of the speed reduction shaft to be smaller than that of the power shaft. The utility model has the advantages of small volume and low cost.

Description

Technical Field

[0001] The utility model relates to a marine propeller, more specifically an underwater power assembly of a propeller. Background Art

[0002] The power for a ship to travel on water comes from a propeller. Commonly used propellers include pod-type propellers. The pod-type propeller includes a steering assembly and an underwater power assembly connected to the steering assembly. The steering assembly is fixed on the shipboard, and the underwater power assembly is placed in the water. The propeller of the underwater power assembly rotates to drive the ship forward. In addition, the direction of the ship is also controlled by the rudder blade. However, the underwater power assembly of the existing pod-type propeller usually uses a motor to directly drive the propeller to rotate. Since the driving force required for the rotation of the propeller is relatively large, the motor output torque is required to be relatively large, resulting in a large size of the motor, which makes the size of the underwater power assembly very large, which is not only inconvenient to install, but also costly. Utility Model Content

[0003] The utility model provides an underwater power assembly of a propeller in order to solve the technical problem that the underwater power assembly in the prior art is large in size, inconvenient to install and high in cost.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is to design an underwater power assembly of a propeller, including a housing, a power motor arranged in the housing, and a propeller connected to the power motor and rotating under the drive of the power motor; the power motor has a rotatable power shaft; the underwater power assembly of the propeller also includes:

[0005] A reducer, which is arranged in the housing and connected to the power shaft of the power motor;

[0006] A reduction shaft, one end of which is connected to the reducer and the other end of which is fixedly connected to the propeller, and the propeller rotates with the reduction shaft; the reducer outputs the rotation of the power shaft to the reduction shaft and makes the rotation speed of the reduction shaft smaller than the rotation speed of the power shaft.

[0007] The surface of the output end of the power shaft is provided with power teeth, and the reducer comprises:

[0008] A fixing ring, which is fixedly connected to the housing, a hollow deceleration hole is arranged at the center of the fixing ring, and a fixing tooth is arranged on the inner side wall of the deceleration hole; the output end of the power shaft is inserted into the deceleration hole;

[0009] reduction gears, comprising at least two, the reduction gears being arranged outside the power shaft and located in the reduction hole, the reduction gears being arranged on the outer side of the reduction gears with reduction teeth, the reduction teeth of the reduction gears being meshed with the power teeth of the power shaft and the fixed teeth;

[0010] A fixed sleeve, which is fixedly connected to one end of the reduction shaft; the reduction gear is arranged on the fixed sleeve and can rotate relative to the fixed sleeve, the reduction gear is arranged on the outer side of the reduction shaft, and the reduction gear drives the fixed sleeve and the reduction shaft to rotate relative to the fixed ring.

[0011] The reduction shaft comprises:

[0012] A boss, which is arranged on the outer side of the reduction shaft and protrudes outward;

[0013] A fixed thread, which is arranged on the outer side surface of the reduction shaft and located on one side of the boss;

[0014] The underwater power assembly of the thruster also includes:

[0015] An angular contact ball bearing, comprising a pair, wherein the inner ring of the angular contact ball bearing is sleeved on the reduction shaft, and the outer ring is fixedly connected to the housing;

[0016] A locking nut, which is sleeved on the reduction shaft and threadedly connected with the fixed thread; the locking nut locks the angular contact ball bearing between the boss and the locking nut; a locking groove penetrating the axis of the locking nut is provided in the middle of the side surface of the locking nut, and a first locking surface and a second locking surface are formed on both sides of the locking groove, and axially arranged locking holes are provided on the first locking surface and the second locking surface;

[0017] A locking screw passes through the locking hole of the first locking surface and the locking groove to lock the first locking surface on the second locking surface.

[0018] The outer side surface of the reduction shaft is also provided with a fixing groove located on one side of the fixing thread;

[0019] The underwater power assembly of the thruster also includes:

[0020] A locking ring is clamped in the fixing groove and blocks the opposite surface of the locking nut and the contact surface of the angular contact ball bearing.

[0021] The underwater power assembly of the thruster also includes:

[0022] A TC sealing ring is sleeved on the reduction shaft and is located in the housing. The TC sealing ring is located on a side of the locking ring away from the locking nut.

[0023] The reduction gears include four.

[0024] The underwater power assembly of the thruster also includes:

[0025] A steering shaft, the lower end of which is fixedly connected to the housing; the steering shaft is provided with a hollow steering shaft cavity which is vertically arranged along the axis of the steering shaft and penetrates the upper and lower surfaces of the steering shaft; the steering shaft cavity is communicated with one end of the power motor in the housing.

[0026] The power motor comprises:

[0027] a stator, which is fixed in the casing;

[0028] A rotor, which is arranged on the inner side of the stator and is fixedly connected to the power shaft;

[0029] The stator is formed by splicing a plurality of evenly distributed sub-stators.

[0030] The power motor is a permanent magnet synchronous motor.

[0031] The underwater power assembly of the thruster also includes:

[0032] A rudder blade is arranged below the casing and fixedly connected to the casing.

[0033] The utility model provides a speed reducer and a speed reduction shaft in the underwater power assembly, and outputs the rotation of the power shaft of the motor motor to the speed reduction shaft through the speed reducer, so that the rotation speed of the speed reduction shaft is less than the rotation speed of the power shaft, thereby driving the propeller to rotate after the speed reduction is reduced by the speed reduction shaft. Therefore, the output of the high-speed rotating power motor can be converted into a low-speed output through the speed reducer and the speed reduction shaft, so that the size of the power motor can be made very small, so that the underwater power assembly is small in size and light in weight, which is conducive to increasing the endurance, and is not only very convenient to install, but also low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention is described in detail below with reference to the embodiments and drawings, wherein:

[0035] Figure 1 It is a structural diagram of the propeller of the utility model;

[0036] Figure 2 It is a structural diagram of the underwater power assembly of the thruster of the utility model;

[0037] Figure 3 It is a cross-sectional view of the underwater power assembly of the thruster of the utility model;

[0038] Figure 4 It is a structural diagram of the power motor of the underwater power assembly of the propeller of the utility model;

[0039] Figure 5yes Figure 4 Structural diagram of neutron stator;

[0040] Figure 6 It is a structural diagram of the reducer and the reduction shaft of the underwater power assembly of the thruster of the utility model;

[0041] Figure 7 It is a structural diagram of the reducer and the reduction shaft of the underwater power assembly of the thruster of the utility model from another perspective;

[0042] Figure 8 It is a structural diagram of a locking nut of an underwater power assembly of a propeller of the utility model. DETAILED DESCRIPTION

[0043] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings:

[0044] Please also see Figures 1 to 8 The underwater power assembly of the propeller of the utility model comprises a housing 11, a power motor 12, a propeller 13, a reducer 14 and a reduction shaft 15. Among them:

[0045] The casing 11 mainly has a protective function. The various parts of the casing 11 are welded by laser welding technology, so that not only the connection is more firm, but also the sealing is better. The casing 11 is made of 316 stainless steel material, so as to prevent seawater corrosion.

[0046] The power motor 12 is arranged in the casing, and the power motor 12 has a rotatable power shaft 121. The power motor is mainly used to provide power for the propeller. In this specific embodiment, the power motor is a permanent magnet synchronous motor, which uses the high efficiency of the permanent magnet synchronous motor in the low speed stage to ensure the effective use of energy consumption.

[0047] The propeller 13 is connected to the power motor and rotates under the drive of the power motor.

[0048] The reducer 14 is arranged in the housing, and the reducer is connected to the power shaft of the power motor.

[0049] One end of the reduction shaft 15 is connected to the reducer, and the other end is fixedly connected to the propeller, and the propeller rotates with the reduction shaft; the reducer outputs the rotation of the power shaft to the reduction shaft and makes the rotation speed of the reduction shaft lower than the rotation speed of the power shaft.

[0050] The utility model provides a speed reducer and a speed reduction shaft in the underwater power assembly, and outputs the rotation of the power shaft of the motor motor to the speed reduction shaft through the speed reducer, so that the rotation speed of the speed reduction shaft is less than the rotation speed of the power shaft, thereby driving the propeller to rotate after the speed reduction is reduced by the speed reduction shaft. Therefore, the output of the high-speed rotating power motor can be converted into a low-speed output through the speed reducer and the speed reduction shaft, so that the size of the power motor can be made very small, so that the underwater power assembly is small in size and light in weight, which is conducive to increasing the endurance, and is not only very convenient to install, but also low in cost.

[0051] In this specific embodiment, a power tooth 1211 is disposed on the surface of the output end of the power shaft 121 .

[0052] The reducer 14 includes a fixing ring 141, a reduction gear 142 and a fixing sleeve 143.

[0053] The fixing ring 141 is fixedly connected to the housing, a hollow reduction hole 1411 is provided at the center of the fixing ring 141, and a fixing tooth 1412 is provided on the inner wall of the reduction hole; the output end of the power shaft is inserted into the reduction hole.

[0054] The reduction gear 142 includes at least two reduction gears, which are arranged on the outside of the power shaft and located in the reduction hole. The outer surface of the reduction gear is provided with a reduction gear 1421, and the reduction gear of the reduction gear is meshed with the power teeth of the power shaft and the fixed teeth. In this specific embodiment, the reduction gear includes four. Four reduction gears can make the force better.

[0055] The fixed sleeve 143 is fixedly connected to one end of the reduction shaft; the reduction gear is arranged on the fixed sleeve and can rotate relative to the fixed sleeve, and the reduction gear is arranged on the outside of the reduction shaft, and the reduction gear drives the fixed sleeve and the reduction shaft to rotate relative to the fixed ring.

[0056] By meshing the reduction teeth of the reduction gear with the power teeth of the power shaft and the fixed teeth, the reduction gear can rotate relative to the fixed sleeve, thereby reducing the rotation speed of the power shaft and outputting it to the reduction shaft. In addition, a structure in which at least two reduction gears are arranged in the fixed ring not only makes the structure more solid, simple and compact, but also makes the rotation smoother.

[0057] In this specific embodiment, the deceleration shaft 15 includes a boss 151 and a fixing thread 152. Wherein:

[0058] The boss 151 is disposed on the outer side of the reduction shaft and protrudes outward.

[0059] The fixing thread 152 is disposed on the outer surface of the reduction shaft and is located on one side of the boss.

[0060] The underwater power assembly of the thruster further includes an angular contact ball bearing 16, a locking nut 17 and a locking screw 18. Among them:

[0061] The angular contact ball bearing 16 comprises a pair, wherein the inner ring of the angular contact ball bearing is sleeved on the reduction shaft, and the outer ring is fixedly connected to the housing.

[0062] The locking nut 17 is sleeved on the reduction shaft and is threadedly connected to the fixing thread 152; the locking nut locks the angular contact ball bearing between the boss and the locking nut; a locking groove 171 penetrating the axis of the locking nut is provided in the middle of the side surface of the locking nut 17, and a first locking surface 172 and a second locking surface 173 are formed on both sides of the locking groove, and an axially arranged locking hole 174 is provided on the first locking surface and the second locking surface.

[0063] The locking screw 18 passes through the locking hole of the first locking surface and the locking groove to lock the first locking surface on the second locking surface. The locking screw locks the first locking surface on the second locking surface, which can cause slight deformation of the thread of the locking nut, thereby preventing the locking nut from loosening.

[0064] By setting up angular contact ball bearings, it can not only bear the axial weight of the power motor, but also the radial force of the power motor's forward, backward and steering. The locking nut is slotted, and locking the locking screw can prevent the locking nut from moving forward and backward.

[0065] In this specific embodiment, a fixing groove 153 located on one side of the fixing thread is further provided on the outer side surface of the reduction shaft 15 .

[0066] The underwater power assembly of the thruster further comprises a locking ring 19. The locking ring 19 is stuck in the fixing groove and blocks the opposite surface of the locking nut and the contact surface of the angular contact ball bearing, and the locking ring can further prevent the locking nut from loosening.

[0067] In this specific embodiment, the underwater power assembly of the thruster further includes a TC sealing ring 10, which is sleeved on the reduction shaft and located in the housing, and is located on the side of the locking ring away from the locking nut. The TC sealing ring is mainly used for sealing to prevent water from entering the reducer.

[0068] In this specific embodiment, the underwater power assembly of the propeller further includes a steering shaft 91, the lower end of which is fixedly connected to the housing; the steering shaft is provided with a hollow steering shaft cavity 911 which is vertically arranged along the axis of the steering shaft and penetrates the upper and lower surfaces of the steering shaft; the steering shaft cavity is communicated with one end of the power motor in the housing. The upper end of the steering shaft is connected to the steering assembly 2, so that the underwater power assembly can be fixed on the ship. The steering shaft cavity can be used to pass the cable of the power motor to prevent the cable from being exposed.

[0069] In this specific embodiment, the power motor 12 further includes a stator 122 and a rotor 123, wherein:

[0070] The stator 122 is fixed in the housing. The stator 122 is formed by splicing a plurality of evenly distributed sub-stators 1221. Thus, winding can be conveniently performed, and the splicing can be performed after the winding is completed.

[0071] The rotor 123 is disposed inside the stator and fixedly connected to the power shaft.

[0072] In this specific embodiment, the underwater power assembly of the thruster further includes a rudder blade 92, which is disposed below the casing and fixedly connected to the casing, and the rudder blade plays a steering balancing role.

[0073] The utility model provides a speed reducer and a speed reduction shaft in the underwater power assembly, and outputs the rotation of the power shaft of the motor motor to the speed reduction shaft through the speed reducer, so that the rotation speed of the speed reduction shaft is less than the rotation speed of the power shaft, thereby driving the propeller to rotate after the speed reduction is reduced by the speed reduction shaft. Therefore, the output of the high-speed rotating power motor can be converted into a low-speed output through the speed reducer and the speed reduction shaft, so that the size of the power motor can be made very small, so that the underwater power assembly is small in size and light in weight, which is conducive to increasing the endurance, and is not only very convenient to install, but also low in cost.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An underwater power assembly of a propeller, comprising a housing, a power motor disposed in the housing, and a propeller connected to the power motor and driven to rotate by the power motor; The power motor has a rotatable power shaft; the characteristics are: The underwater power assembly of the thruster also includes: A reducer, which is arranged in the housing and connected to the power shaft of the power motor; A reduction shaft, one end of which is connected to the reducer and the other end of which is fixedly connected to the propeller, and the propeller rotates with the reduction shaft; the reducer outputs the rotation of the power shaft to the reduction shaft and makes the rotation speed of the reduction shaft smaller than the rotation speed of the power shaft.

2. The underwater power assembly of the propeller according to claim 1, characterized in that: The surface of the output end of the power shaft is provided with power teeth, and the reducer comprises: A fixing ring, which is fixedly connected to the housing, a hollow deceleration hole is arranged at the center of the fixing ring, and a fixing tooth is arranged on the inner side wall of the deceleration hole; the output end of the power shaft is inserted into the deceleration hole; reduction gears, comprising at least two, the reduction gears being arranged outside the power shaft and located in the reduction hole, the reduction gears being arranged on the outer side of the reduction gears with reduction teeth, the reduction teeth of the reduction gears being meshed with the power teeth of the power shaft and the fixed teeth; A fixed sleeve, which is fixedly connected to one end of the reduction shaft; the reduction gear is arranged on the fixed sleeve and can rotate relative to the fixed sleeve, the reduction gear is arranged on the outer side of the reduction shaft, and the reduction gear drives the fixed sleeve and the reduction shaft to rotate relative to the fixed ring.

3. The underwater power assembly of the propeller according to claim 2, characterized in that: The reduction shaft comprises: A boss, which is arranged on the outer side of the reduction shaft and protrudes outwards; A fixed thread, which is arranged on the outer side surface of the reduction shaft and located on one side of the boss; The underwater power assembly of the thruster also includes: An angular contact ball bearing, comprising a pair, wherein the inner ring of the angular contact ball bearing is sleeved on the reduction shaft, and the outer ring is fixedly connected to the housing; A locking nut, which is sleeved on the reduction shaft and threadedly connected with the fixed thread; the locking nut locks the angular contact ball bearing between the boss and the locking nut; a locking groove penetrating the axis of the locking nut is provided in the middle of the side surface of the locking nut, and a first locking surface and a second locking surface are formed on both sides of the locking groove, and axially arranged locking holes are provided on the first locking surface and the second locking surface; A locking screw passes through the locking hole of the first locking surface and the locking groove to lock the first locking surface on the second locking surface.

4. The underwater power assembly of the propeller according to claim 3, characterized in that: The outer side surface of the reduction shaft is also provided with a fixing groove located on one side of the fixing thread; The underwater power assembly of the thruster also includes: A locking ring is clamped in the fixing groove and blocks the opposite surface of the locking nut and the contact surface of the angular contact ball bearing.

5. The underwater power assembly of the propeller according to claim 4, characterized in that: The underwater power assembly of the thruster also includes: A TC sealing ring is sleeved on the reduction shaft and is located in the housing. The TC sealing ring is located on a side of the locking ring away from the locking nut.

6. The underwater power assembly of the propeller according to claim 2, characterized in that: The reduction gears include four.

7. The underwater power assembly of the propeller according to claim 1, characterized in that: The underwater power assembly of the thruster also includes: A steering shaft, the lower end of which is fixedly connected to the housing; the steering shaft is provided with a hollow steering shaft cavity which is vertically arranged along the axis of the steering shaft and penetrates the upper and lower surfaces of the steering shaft; the steering shaft cavity is communicated with one end of the power motor in the housing.

8. The underwater power assembly of the propeller according to claim 1, characterized in that: The power motor comprises: a stator, which is fixed in the casing; A rotor, which is arranged on the inner side of the stator and is fixedly connected to the power shaft; The stator is formed by splicing a plurality of evenly distributed sub-stators.

9. The underwater power assembly of the propeller according to claim 8, characterized in that: The power motor is a permanent magnet synchronous motor.

10. The underwater power assembly of the propeller according to claim 1, characterized in that: The underwater power assembly of the thruster also includes: A rudder blade is arranged below the casing and fixedly connected to the casing.

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