CN218489887U - Propeller assembly, marine propeller and ship - Google Patents

Abstract

The application provides a screw subassembly, marine propeller and boats and ships. Wherein, the screw subassembly includes drive assembly and screw, drive assembly connects the screw for with rotating the moment of torsion transmission extremely the screw, drive assembly is equipped with first variable speed subassembly, transmission protection piece, first box and lubricating oil pump on transmission path, and the first box intussuseption is filled with lubricating oil, first variable speed subassembly the transmission protection piece with the lubricating oil pump set up in the first box, just the lubricating oil pump is connected first variable speed subassembly's axis of rotation, transmission protection piece set up in first variable speed subassembly with on the transmission path of screw, transmission protection piece is used for the screw disconnection transmission when transshipping reduces transmission subassembly and screw and produces the risk of transshipping the damage, realizes the protection to transmission structure and screw.

Description

Propeller assembly, marine propeller and ship

Technical Field

The application relates to the technical field of ship equipment, particularly, relate to screw subassembly, marine propeller and boats and ships.

Background

The existing electric propeller assembly has a single speed change structure, is more used in a low-power propeller assembly, is suitable for small ships, can only provide relatively low power and is limited in applicable machines. And the existing speed change structure lacks a protection device, so that when the ship moves in water, the situation that the ship touches a reef or bumps other harder objects is inevitable because the underwater situation is unclear. Therefore, the transmission mechanism of the propeller assembly is greatly damaged, and even transmission failure can be directly caused, and finally, the operation of the ship is greatly influenced.

SUMMERY OF THE UTILITY MODEL

The application provides improve screw subassembly, marine propeller and boats and ships of security.

The embodiment of the application provides a propeller assembly, including drive assembly and screw, drive assembly connects the screw for transmit the torque of will rotating extremely the screw, drive assembly is equipped with first variable speed subassembly, transmission protection piece, first box and lubricating oil pump on transmission path, and the first box intussuseption is filled with lubricating oil, first variable speed subassembly transmission protection piece with the lubricating oil pump set up in the first box, just the lubricating oil pump is connected first variable speed subassembly's axis of rotation, transmission protection piece set up in first variable speed subassembly with on the transmission path of screw, transmission protection piece is used for the screw disconnection transmission when transshipping reduces drive assembly and screw and produces the risk of transshipping the damage, realizes the protection to drive structure and screw.

The embodiment of the application also provides a marine propeller, which comprises a motor and the propeller assembly, wherein the motor is connected with the transmission assembly of the propeller assembly.

Embodiments of the present application also provide a ship, including a hull and the marine propulsor of the above embodiments, wherein the marine propulsor is detachably connected to the hull.

The utility model provides a screw subassembly, marine propeller and boats and ships are through setting up transmission protection piece in transmission assembly, and when the screw was twined or when striking obstacles such as reefs, transmission protection piece can in time break off the transmission to reduce the moment of torsion that screw and variable speed subassembly received, play the guard action. After the barrier is clear away, the transmission protection piece can resume the transmission between screw and the variable speed subassembly and be connected, continues the rotation moment of torsion of transmission motor output, effectively promotes screw's safety in utilization and life. Still through the axis of rotation with first variable speed subassembly is connected to the lubricating oil pump, realize the pump of first box internal lubricating oil and go into with the pump, let first variable speed subassembly, transmission protection piece etc. can be fully soaked by lubricating oil in the operation process, reduce the frictional resistance between the mechanism, noise reduction promotes transmission stability.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a marine propeller having a propeller assembly in one embodiment.

Fig. 2 is a schematic structural view of a marine propeller having a propeller assembly in one embodiment.

Fig. 3 is a schematic structural view of a marine propeller having a propeller assembly in one embodiment.

Fig. 4 is a schematic structural view of a marine propeller having a propeller assembly in one embodiment.

Fig. 5 is a schematic structural view of a ship in the embodiment of the present application.

Description of the main element symbols:

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Some embodiments of the present application are described in detail. In the following embodiments and features of the embodiments may be combined with each other without conflict.

Referring to fig. 1, an embodiment of the present application provides a marine propulsor 100 comprising a motor 1 and a propeller assembly comprising a transmission assembly 3 and a propeller 2. The transmission assembly 3 is connected to the propeller 2 and a motor 1, the motor 1 outputs rotation torque, and the transmission assembly 3 is used for transmitting the rotation torque output by the motor 1 to the propeller 2. The transmission assembly 3 is provided with a first box 31, a lubricating oil pump 32, a first speed changing assembly 5 and a transmission protection member 4 on a transmission path, the first box 31 is filled with lubricating oil, and the lubricating oil pump 32, the first speed changing assembly 5 and the transmission protection member 4 are arranged in the first box 31. The first speed changing assembly 5 is used for converting the rotating speed output by the motor 1, the lubricating oil pump 32 is connected with the rotating shaft of the first speed changing assembly 5, and the transmission protection piece 4 is used for disconnecting transmission when the propeller 2 is overloaded, so that the problem that the first speed changing assembly 5 and the propeller 2 are damaged due to overlarge torque is solved.

The disconnection transmission includes various types such as a slip transmission, a friction transmission, a cushion transmission, and the like, and is not limited to the type in which the transmission protector 4 is disconnected from the propeller 2. When the torque received by the propeller 2 returns to normal, the transmission protection member 4 can restore the transmission connection relationship between the transmission assembly 3 and the propeller 2, so that the transmission assembly 3 can continuously transmit the rotation torque to the propeller 2.

Specifically, the first transmission assembly 5 is a gear transmission assembly, and the first transmission assembly 5 is connected to the motor 1. The transmission assembly 3 is further provided with a second speed change assembly 6 on the transmission path, and the second speed change assembly 6 is a gear speed change assembly for converting the rotation speed output by the first speed change assembly 5, thereby adjusting the rotation speed of the propeller 2. The transmission guard 4 is provided with a clutch 41 connecting the first transmission assembly 5 and the second transmission assembly 6.

In the practice of the present application, the clutch 41 includes, but is not limited to, an overload clutch, and when the propeller 2 is wound or hit a reef or other obstruction, the clutch 41 can slip when the propeller 2 is overloaded, thereby reducing the torque experienced by the propeller 2 and the first transmission assembly 5 for protection. When the obstacle is cleared, the transmission protection piece 4 can recover the transmission connection between the propeller 2 and the first speed change assembly 5, the rotation torque output by the motor 1 is continuously transmitted, and the use safety and the service life of the propeller assembly are effectively improved.

In the practice of the present application, the propeller assembly further includes a frame 90 on which the first and second speed change assemblies 5 and 6 are mounted. The first and second transmission assemblies 5 and 6 operate stably on the frame 90 to achieve an effective slew rate.

Further, the first speed changing assembly 5 includes a first driving gear 51 and a first driven gear 52 engaged with each other. The first driving gear 51 is coaxially arranged with the motor 1 and fixedly connected with an output shaft of the motor 1. The second speed change assembly 6 includes a second driving gear 61 and a second driven gear 62 that mesh with each other. The second driving gear 61 is connected to the first driven gear 52, and is configured to receive the rotation torque of the first driven gear 52 and drive the second driven gear 62 to rotate, so as to realize conversion of the rotation rate output by the first speed changing assembly 5.

In the embodiment of the present application, the first driving gear 51 is provided with a first driving gear shaft 511, and the first driving gear shaft 511 is rotatably connected to the frame 90. Specifically, the frame 90 may be provided with a shaft hole and a bearing fixed in the shaft hole, and the first driving gear shaft 511 may stably rotate relative to the frame 90 by being engaged with the bearing. The output shaft of the motor 1 is fixedly connected with the first driving gear shaft 511. When the output shaft of the motor 1 rotates, the first driving gear shaft 511 can stably rotate on the frame 90 so as to transmit the output torque of the motor 1. It is understood that the first driven gear 52 is provided with a first driven gear shaft 521, the second driving gear 61 is provided with a second driving gear shaft 611, and the second driven gear 62 is provided with a second driven gear shaft 621. First driven gear shaft 521, second driven gear shaft 611, and second driven gear shaft 621 can be mounted on frame 90 in the same manner as first driven gear shaft 511, thereby achieving stable operation of first and second speed changing assemblies 5 and 6 on frame 90.

Specifically, the diameter of the first driving gear 51 is smaller than that of the first driven gear 52, and the diameter of the second driving gear 61 is smaller than that of the second driven gear 62, so as to convert the rotation rate output from the motor 1 into a relatively low rotation rate and transmit the relatively low rotation rate to the propeller 2, so that the propeller 2 obtains a large rotation torque, thereby generating a sufficient propulsive force to provide power for the ship to travel. It will be appreciated that in other embodiments, the diameter of the second driving gear 61 can be larger than the diameter of the second driven gear 62 to convert the rotational speed output by the first transmission assembly 5 to a relatively high output speed. The type of each gear includes but not limited to straight gear, helical gear etc. and the ratio between the gear tooth number also can be selected according to actual need, satisfies the transmission demand can, and this application does not limit this.

In the present embodiment, the first driving gear 51 and the first driven gear 52 are disposed substantially in parallel with each other, the second driving gear 61 and the first driven gear 52 are disposed coaxially, and the transmission protector 4 is connected between the second driving gear 61 and the first driven gear 52. Specifically, the transmission protector 4 is disposed at a connection between the first driven gear shaft 521 and the second driving gear shaft 611, and the transmission protector 4 disconnects the transmission connection between the first driven gear shaft 521 and the second driving gear shaft 611 when the propeller 2 is overloaded. The axis of the second driven gear 62 is substantially parallel to the axis of the second driving gear 61, and the second driven gear 62 is staggered from the first driving gear 51, so that on one hand, when the second speed change assembly 6 is installed, the installation accuracy between the second driving gear 61 and the first driven gear 52 can meet the design requirement, the installation position relation between the second driven gear 62 and the first speed change assembly 5 does not need to be considered, the assembly difficulty of the transmission assembly 3 is favorably reduced, and the subsequent maintenance and replacement are convenient; on the other hand, the second driven gear 62 and the first driving gear 51 are arranged in a staggered mode, so that the distance between the rotating shaft of the propeller 2 and the rotating shaft of the motor 1 can be increased, and the propeller assembly is suitable for the situation that the mounting position of the propeller assembly in a ship is higher than the water surface.

Further, the transmission assembly 3 is provided with a belt transmission assembly 33 on the transmission path for transmitting the rotation torque of the second speed changing assembly 6 to the propeller 2 and performing slip transmission when the propeller 2 is overloaded. The transmission assembly 3 further comprises a first casing 31, the first casing 31 being part of the frame 90. The first transmission assembly 5, the transmission protection member 4 and the second transmission assembly 6 are disposed in the first case 31, and the belt transmission assembly 33 is connected to the second transmission assembly 6 outside the first case 31. The first tank 31 is at least partially located on the water surface to facilitate reducing the sailing resistance. Of course, in other embodiments, the belt drive assembly 33 may be connected to the second transmission assembly 6 in the first housing 31.

Specifically, the belt driving assembly 33 includes a first driving wheel 331, a second driving wheel 332, and a driving belt 333. The transmission belt 333 is sleeved on the first transmission wheel 331 and the second transmission wheel 332. The first driving wheel 331 is connected to the second driven gear 62 for receiving the rotational torque. The first driving wheel 331 is coaxial with the second driven gear 62, and the rotating shaft of the first driving wheel 331 is fixedly connected with the second driven gear shaft 621 of the second driven gear 62. The second transmission wheel 332 is used for outputting a rotation torque, the second transmission wheel 332 is connected with the propeller 2, and the second transmission wheel 332 drives the propeller 2 to rotate. Specifically, the rotating shaft of the second transmission wheel 332 is fixedly connected with the rotating shaft of the propeller 2, and when the transmission belt 333 drives the second transmission wheel 332 to rotate, the propeller 2 rotates synchronously with the second transmission wheel 332.

The belt transmission assembly 33 can increase the number of speed change stages on one hand, so that the motor 1 which is adapted to the larger power provides larger power for the propeller assembly, and on the other hand, when the propeller 2 is impacted, the belt transmission assembly 33 can provide certain buffer effect to protect other transmission structures. In addition, the belt transmission assembly 33 can also effectively reduce noise and improve the use comfort of the propeller assembly.

In this embodiment, the propeller assembly further includes a circulation pump 10, a first pipeline 11, a second pipeline 12, and a third pipeline 13, so as to realize heat dissipation of the structures such as the motor 1 and the transmission assembly 3, and reduce the problem of overheating failure of the equipment, the mechanical structure, and the like. The first pipe 11 connects the inlet end of the circulation pump 10 and the first tank 31, and the circulation pump 10 pumps the cooling liquid in the first tank 31 through the first pipe 11. The cooling liquid may be lubricating oil in the first tank 31. The second pipeline 12 and the third pipeline 13 are connected in parallel to the outlet end of the circulation pump 10, the third pipeline 13 is communicated with the motor 1, and the second pipeline 12 is sequentially communicated with the motor 1 and the first tank 31. The circulation pump 10 delivers the cooling liquid to the motor 1 and the first tank 31 through the second pipe 12 and the third pipe 13. In the embodiment of the present application, the first tank 31 is partially submerged under the water surface, so that the temperature of the part of the cooling liquid in the first tank 31 is kept consistent with the temperature of the surrounding water environment, and the temperature reduction of the cooling liquid is realized. The first pipeline 11 is used for extracting the cooling liquid in the water part of the first tank 31 to the circulating pump 10, and the cooling liquid is conveyed to the motor 1 and the transmission assembly 3 through the second pipeline 12 and the third pipeline 13 via the circulating pump 10, so that the cooling of the motor 1 and the transmission assembly 3 is realized. The shell of the motor 1 can be communicated with the first box 31, cooling liquid can flow into the first box 31 again after radiating heat of the motor 1 and flow to the underwater part of the first box 31 under the action of gravity, and the cooling liquid is cooled by utilizing the water area environment. Therefore, the propeller assembly can exchange heat for cooling liquid by utilizing the natural environment in the process of going on a ship, extra cooling equipment is not required to be arranged, and the production cost is saved.

It will be appreciated that in other embodiments the first tank 31 may also be arranged above the water surface with the first conduit 11 partially submerged below the water surface. When liquid in the first box 31 is pumped out to the part of the first pipeline 11 submerged under water, the liquid with higher temperature exchanges heat with the surrounding water area environment to realize the cooling of cooling liquid, and the liquid after being cooled is conveyed to the motor 1 and the first box 31 through the second pipeline 12 and the third pipeline 13 by the circulating pump 10, so that the heat dissipation of the structures of the motor 1, the transmission assembly 3 and the like is realized.

Further, the propeller assembly may further include a filter 14, and the filter 14 is disposed on the water surface and connected between the second and third pipes 12 and 13 and the circulation pump 10. The filter 14 is used for filtering impurities in the heat dissipation liquid, reducing the abrasion of the impurities to the motor 1 and the transmission assembly 3, and improving the motion stability of the motor 1 and the transmission assembly 3. Still be equipped with a plurality of spray 15 on second pipeline 12 and the third pipeline 13, spray 15 and be located motor 1 and first box 31 for the even spraying of cooling liquid after will cooling is in motor 1's casing and first box 31, is favorable to improving the radiating efficiency, reduces the too high problem of local temperature. In this embodiment, the first tank 31 is filled with a cooling liquid, the cooling liquid has a lubricating effect, the cooling liquid may be lubricating cooling machine oil, and the cooling liquid is used for lubricating the transmission assembly 3 and may be thermally coupled with the transmission assembly 3.

It is to be understood that the first transmission assembly 5 is not limited to the manner of the above-described embodiment, and the first transmission assembly 5 may also be constituted by three gears sequentially meshing with each other, or by four gears sequentially meshing with each other. In the embodiment of the present application, the number of gears of the first transmission assembly 5 is not limited. The first transmission assembly 5 may be formed by a plurality of damper wheels in sequence. Any speed change structure intended to enable a torque conversion rate of the motor 1 belongs to the embodiment of the present application.

The second transmission assembly 6 may also be formed by three or more gears meshed in sequence, and the number of gears of the second transmission assembly 6 is not limited in this application. In other embodiments, the second transmission assembly 6 may also be formed by a worm and gear structure, or by a plurality of damper wheels in turn. Any structure intended to be able to shift the torque conversion rate of the first transmission assembly 5 belongs to the embodiment of the present application.

The number of the transmission belts 333 in the belt transmission assembly 33 may be one or more, which is not limited in this application. In other embodiments, the belt drive assembly 33 may also be replaced with a chain drive arrangement. Any structure intended to be able to transmit the output torque of the second transmission assembly 6 belongs to the embodiment of the present application.

Referring to fig. 2, on the basis of the embodiment shown in fig. 1, the structural form of the second transmission assembly 6 is replaced, the belt transmission assembly 33 is eliminated, and the propeller 2 is connected with the second transmission assembly 6, so as to form the embodiment shown in fig. 2. In the embodiment shown in fig. 2, the second driving gear 61 and the second driven gear 62 are mutually engaged bevel gears, and the axis of the second driving gear 61 is perpendicular to the axis of the second driven gear 62. The transmission protector 4 is connected between the first driven gear 52 and the second driving gear 61. The second speed change assembly 6 with the bevel gear structure has the advantages of changing the transmission direction and improving the transmission stability.

It will be appreciated that the second transmission assembly 6 may also include a plurality of second driven gears 62, each of the plurality of second driven gears 62 being a bevel gear.

In the embodiment shown in fig. 2, the second speed change assembly 6 with a bevel gear structure is used for transmitting the output torque of the first speed change assembly 5 and driving the propeller 2 to rotate, which is beneficial to improving the transmission stability and transmission precision and reducing the noise when the machine is used. In addition, the second speed changing assembly 6 with the bevel gear structure is beneficial to reducing the volume of the underwater part of the machine and reducing the ship resistance.

Further, in the embodiment shown in fig. 2, the motor 1, the first speed changing assembly 5 and the second speed changing assembly 6 are changed from the left-right arrangement shown in fig. 1 to the up-down arrangement, the second driven gear 62 is connected with the propeller 2, the axis of the second driven gear 62 is coaxially arranged with the axis of the propeller 2, and the axis of the propeller 2 is vertically arranged with the axis of the motor 1. The lubricating oil pump 32, the first transmission assembly 5 and the transmission guard 4 are disposed within the first case 31, and the second transmission assembly 6 is disposed outside the first case 31. The second speed change assembly 6 is directly connected with the propeller 2, so that the axis of the propeller 2 is perpendicular to the axis of the motor 1, and the positions and the gear ratios of the first speed change assembly 5, the second speed change assembly 6 and the motor 1 are changed, so that different installation and use requirements are met, and the applicability of the propeller assembly is improved. In the propeller assembly of the embodiment shown in fig. 2, the propeller 2 is directly driven by the second speed change assembly 6 to rotate, so that the transmission levels are reduced, the transmission efficiency of the machine is improved, the energy loss is reduced, and the propulsion power is improved.

In the embodiment shown in fig. 2, the lubricant pump 32 is disposed on a side of the first transmission assembly 5 facing away from the transmission protection member 4 for driving the lubricant in the first box 31 to circulate, thereby reducing the frictional resistance of the internal structure of the machine during operation. Specifically, a power mechanism (such as a gear, an impeller, and the like) of the lubricating oil pump 32 is in transmission connection with the first driven gear shaft 521, the power mechanism of the lubricating oil pump 32 rotates along with the first driven gear 52, and the lubricating oil pump 32 drives the cooling liquid to flow under the action of a rotation torque, so that the cooling liquid in the first box 31 is pumped out and pumped in, the first speed change assembly 5, the transmission protection piece 4, and the like can be fully soaked by the cooling liquid in the operation process, the friction resistance between the mechanisms is reduced, the noise is reduced, the transmission stability is improved, and meanwhile, the transmission assembly 3 is effectively cooled.

Referring to fig. 3, on the basis of the embodiment shown in fig. 2, the position of the lubricating oil pump 32 in the embodiment shown in fig. 2 is changed to form the embodiment shown in fig. 3. In the embodiment shown in fig. 3, the lubricating oil pump 32 is disposed on one side of the transmission protector 4 facing the second speed changing assembly 6, which is beneficial to improving the wetting effect of the transmission protector 4 and reducing the problem of transmission failure caused by the locking of the transmission protector 4 due to excessive friction resistance.

In other embodiments, the lubricating oil pump 32 can also be connected to the output shaft of the second driven gear 62, so that the rotating speed of the lubricating oil pump 32 can be reduced, the lubricating effect is ensured, the vibration and noise of the machine are reduced as much as possible, and the transmission stability is improved. It is understood that the lubricating oil pump 32 can also be connected to other rotating shafts of the transmission assembly 3 to meet the use requirement of the machine, which is not limited in the present application.

Further, the second transmission assembly 6 in the embodiment shown in fig. 3 can be replaced by a belt transmission assembly, and the structure of the belt transmission assembly is substantially the same as that of the embodiment shown in fig. 1, and will not be described again here.

Referring to fig. 4, on the basis of the embodiment shown in fig. 3, the clutch in the transmission protection member 4 of the embodiment shown in fig. 3 is replaced by a coupler or a damper, so as to form the embodiment shown in fig. 4. In the embodiment shown in fig. 4, the transmission guard 4 comprises either a flexible coupling or a damper connecting the first transmission assembly 5 and the second transmission assembly 6. When the propeller 2 is overloaded, the coupler or the shock absorber can provide a certain buffering effect, reduce the vibration of the transmission component 3 and achieve the purpose of protecting the transmission component 3. Specifically, the two ends of the flexible coupling or the damper are respectively connected to the rotating shaft of the first driven gear 52 and the rotating shaft of the second driving gear 61, and a flexible structure is arranged in the flexible coupling or the damper, and the flexible structure can be a rubber, a spring, an electromagnet, thermoplastic plastic and other structural members. When the propeller 2 is overloaded, the flexible structure in the flexible coupling or the shock absorber can absorb the overload torque returned by the propeller 2, and the mechanical damage of the gear structures in the first speed changing assembly 5 and the second speed changing assembly 6 caused by overlarge torque is avoided.

Furthermore, the manufacturing costs of the flexible couplings, dampers, etc. are relatively low compared to the clutches, so the choice of flexible couplings, dampers, etc. in the transmission protection 4 is advantageous for reducing the manufacturing costs of the propeller assembly. When the first driven gear 52 transmits the torque to the second driving gear 61 through the transmission protection member 4, the flexible structure in the flexible coupling or the damper can also help to buffer the mechanical vibration, reduce the noise of the machine, and maintain the transmission stability.

The marine propeller 100 provided by the embodiment of the present application comprises a motor 1 and a propeller assembly described in any embodiment or combination of embodiments, wherein the motor 1 is connected with a transmission assembly 3 of the propeller assembly.

Referring to fig. 5, an embodiment of the present application further provides a ship 200, which includes a hull 201 and the marine propulsor 100 according to any of the above embodiments, wherein the marine propulsor 100 is detachably connected to the hull 201 and is used for providing a ship-moving power for the hull 201.

The propeller assembly, marine propeller 100 and boats and ships 200 of this application are through setting up transmission protection piece 4 in transmission assembly 3, and when screw 2 was twined or when strikeing obstacles such as reef, transmission protection piece 4 can in time break off the transmission to reduce the moment of torsion that screw 2 and variable speed assembly received, play the guard action. When the obstacle is cleared, the transmission protection piece 4 can recover the transmission connection between the propeller 2 and the speed change assembly, the rotation torque output by the motor 1 is continuously transmitted, and the use safety and the service life of the propeller assembly are effectively improved. The lubricating oil pump 32 is connected with the rotating shaft of the first speed change assembly 5, so that the lubricating oil in the first box body 31 is pumped out and pumped in, the first speed change assembly 5, the transmission protection piece 4 and the like can be fully soaked by the lubricating oil in the operation process, the friction resistance between mechanisms is reduced, the noise is reduced, and the transmission stability is improved.

Although the present application has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the present application.

Claims (16)

1. The utility model provides a propeller assembly, its characterized in that, includes drive assembly and screw, drive assembly connects the screw for with rotate the moment of torsion transmission extremely the screw, drive assembly is equipped with first variable speed subassembly, transmission protection piece, first box and lubricating oil pump on transmission path, and first box intussuseption is filled with lubricating oil, first variable speed subassembly transmission protection piece with the lubricating oil pump set up in the first box, just the lubricating oil pump is connected first variable speed subassembly's axis of rotation, transmission protection piece set up in first variable speed subassembly with on the transmission path of screw, transmission protection piece is used for disconnection transmission when the screw transships.

2. The propeller assembly of claim 1, wherein the first speed change assembly is a gear speed change assembly.

3. The propeller assembly of claim 1, wherein:

the transmission assembly is provided with a second speed change assembly on a transmission path, and the second speed change assembly is used for converting the rotation speed output by the first speed change assembly.

4. The propeller assembly of claim 3, wherein the second speed change assembly is a gear speed change assembly.

5. The propeller assembly of claim 3 wherein the transmission guard is provided with a clutch connecting the first and second transmission assemblies.

6. The propeller assembly of claim 3, wherein the transmission protector comprises any one of a flexible coupling, a damper, and the coupling or the damper connects the first and second speed change assemblies.

7. The propeller assembly of claim 3, wherein:

the first speed change assembly comprises a first driving gear and a first driven gear which are meshed with each other, and the transmission protection piece is arranged on a transmission path between the first driven gear and the propeller.

8. The propeller assembly of claim 7, wherein the first driving gear has a diameter smaller than that of the first driven gear, and the lubricating oil pump is connected to a rotating shaft of the first driven gear.

9. The propeller assembly of claim 7, wherein:

the second speed change assembly comprises a second driving gear and a second driven gear which are meshed with each other, the second driving gear is connected with the first driven gear, and the second driving gear is used for receiving the rotating torque of the first driven gear.

10. The propeller assembly of claim 9 wherein the axis of the second drive gear is perpendicular to the axis of the second driven gear.

11. The propeller assembly of claim 10, wherein the axis of the second driven gear is disposed coaxially with the axis of the propeller.

12. The propeller assembly of claim 1,

the transmission assembly is provided with a belt transmission assembly on a transmission path, the belt transmission assembly is connected between the transmission protection piece and the propeller, and the belt transmission assembly is used for slip transmission when the propeller is overloaded.

13. The propeller assembly of claim 12, wherein the belt drive assembly includes a first drive wheel, a second drive wheel and a drive belt, the first drive wheel is configured to receive a rotational torque, the second drive wheel is configured to output a rotational torque, the drive belt is sleeved on the first drive wheel and the second drive wheel, and the second drive wheel is connected to the propeller.

14. The propeller assembly of claim 1, wherein: the first tank section is located above the water surface.

15. A marine propulsor comprising an electric motor and a propeller assembly as claimed in any one of claims 1 to 14, said electric motor being connected to a drive assembly of said propeller assembly.

16. A marine vessel comprising a hull and the marine propulsor of claim 15, said marine propulsor being connected to said hull.

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