CN219172645U - Water area movable equipment and propeller thereof - Google Patents

Abstract

The application relates to the field of movable equipment in water areas, and aims to solve the problems of low driving efficiency and thrust energy waste caused by large upstream surface of a propeller in the prior art. Wherein, the propeller includes mounting bracket, output shaft, screw, a plurality of motors, drive assembly and cooling lubricating oil. The mounting frame defines a containing space. One end of the output shaft is accommodated in the accommodating space, and the other end extends out of the accommodating space. The screw is connected to one end of the output shaft outside the accommodating space. The input shaft of each motor is rotationally matched with the mounting frame and is spaced side by side with the output shaft. The transmission assembly is accommodated in the accommodating space, and the plurality of input shafts are connected with the output shaft through transmission of the transmission assembly, so that power of the plurality of motors is transmitted to the propeller. The cooling lubricating oil is contained in the containing space, and the transmission assembly is cooled and lubricated. The beneficial effects of this application are that the upstream face is less, driving efficiency is higher, the safety in utilization is higher, cooling lubrication effect is good.

Description

Water area movable equipment and propeller thereof

Technical Field

The present application relates to the field of water area mobile devices, and in particular to a water area mobile device and a propeller thereof.

Background

The propeller of the water movable device is used for pushing the water movable device to move in water. In the known art, in order to obtain a larger driving force, a power machine with a larger power is often selected. Power machines with larger driving forces tend to have larger volumes, with the propeller of the propeller being shielded by the upstream face, resulting in lower driving efficiency and waste of thrust energy.

Disclosure of Invention

The application provides a water area movable device with high driving efficiency and a propeller thereof.

The present application provides a propeller for a water area mobile device, comprising:

the mounting frame is used for defining a containing space;

one end of the output shaft is accommodated in the accommodating space, and the other end of the output shaft extends out of the accommodating space;

the propeller is connected to one end of the output shaft, which is positioned outside the accommodating space, and can rotate along with the output shaft relative to the mounting frame;

a plurality of motors, each motor being provided with an input shaft for outputting torque; the input shaft is in running fit with the mounting frame and is spaced side by side with the output shaft;

the transmission assembly is accommodated in the accommodating space, and the plurality of input shafts are connected with the output shaft through transmission of the transmission assembly, so that power of the plurality of motors is transmitted to the propeller connected with the output shaft;

and the cooling lubricating oil is accommodated in the accommodating space and cools and lubricates the driving assembly.

The propeller is characterized in that the propeller is rotatably supported on the output shaft of the mounting frame and is connected with a plurality of motors through the transmission assembly, the structure is compact and reasonable, and the motors can be simultaneously started to obtain superimposed driving force when needed, so that the maximum driving force of the propeller for the movable equipment in the water area is large enough, and when the movable equipment in the water area is in a low-speed running state, only part of the motors can be closed. In addition, the cooling lubricating oil can be used for lubricating and cooling the transmission assembly, so that the abrasion can be reduced and the heat dissipation can be improved.

In addition, the plurality of motors are adopted to replace a single motor with larger power, so that the total volume of the motor can be reduced. For example, where the maximum power that can be provided is the same, the volume or water-facing cross-section of a single motor is greater than the total water-facing cross-section when implemented with multiple smaller motors. And the mode of adopting a plurality of smaller motors is beneficial to the arrangement of the motors and the full utilization of structural space, and is beneficial to reducing the total volume or the water facing section of the propeller for the movable equipment in the water area. And moreover, a mode that a plurality of motors are adopted to realize, so that even if part of motors fail, other motors can provide certain propelling force, and the use safety of movable equipment in a water area is improved.

The application also provides a waters mobile device, it includes:

a movable body; and

a propulsion device mounted to the movable body;

wherein the propulsion device comprises the propulsion device for the movable equipment in the water area.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly describe the drawings in the embodiments, it being understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a water area mobile device according to an embodiment of the present application;

FIG. 2 is a schematic structural view of an embodiment of a propeller for a water area mobile device according to an embodiment of the present application;

FIG. 3 is a schematic structural view of another embodiment of a propeller for a water area mobile device according to an embodiment of the present application;

fig. 4 is a schematic structural view of another implementation of the propeller for a water area mobile device according to the embodiment of the present application.

Description of main reference numerals:

water area mobile device 100

The movable body 110

Frame 111

Propulsion device 120

Propeller 300

Output shaft 11

Propeller 12

Transmission assembly 13

Electric motor 14

First axle center 15

First face 16

Input shaft 17

Second axle center 18

First motor 19

Second motor 20

First gear 21

Second gear 22

Mounting frame 23

First bearing member 241

Second bearing member 242

Tapered roller bearing 25

Angular contact ball bearing 26

Thrust self-aligning bearing 27

Accommodation space 28

Cover 29

Housing 30

First through hole 31

First groove 32

Second through hole 33

Second groove 34

First seal ring 35

Second seal ring 36

Static seal ring 44

Cooling lubricating oil 50

Detailed Description

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

It will be understood that when an element is referred to as being "fixed 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 are used herein 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 application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.

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

The embodiment provides a propeller for water area movable equipment, which comprises a mounting frame, an output shaft, a propeller, a plurality of motors, a transmission assembly and cooling lubricating oil. The mounting frame defines a containing space; one end of the output shaft is accommodated in the accommodating space, and the other end extends out of the accommodating space; the screw propeller is connected to one end of the output shaft, which is positioned outside the accommodating space, and can rotate along with the output shaft relative to the mounting frame; each motor is provided with an input shaft for outputting torque; the input shaft is in running fit with the mounting frame and is spaced side by side with the output shaft; the transmission assembly is accommodated in the accommodating space, and the plurality of input shafts are connected with the output shaft through transmission of the transmission assembly, so that power of the plurality of motors is transmitted to the propeller connected with the output shaft; and the cooling lubricating oil is accommodated in the accommodating space and cools and lubricates the driving assembly.

According to the embodiment, the motors are adopted to drive the propeller through the transmission assembly arranged on the mounting frame, the motors can be started simultaneously to obtain the superimposed driving force when needed, so that the maximum driving force of the propeller of the water area movable equipment is large enough, when the water area movable equipment is in a low-speed running state, only part of the motors can be closed, and meanwhile, cooling lubricating oil in the accommodating space where the transmission assembly is arranged can provide cooling and lubricating effects for the transmission assembly, so that abrasion is reduced, and heat dissipation capacity is improved.

In addition, the plurality of motors are adopted to replace a single motor with larger power, so that the total volume of the motor can be reduced. The volume or water-facing section of a single motor is greater than the total water-facing section when implemented with a plurality of smaller motors, with the maximum power that can be provided being the same. And the mode of adopting a plurality of smaller motors is beneficial to the arrangement of the motors and the full utilization of structural space, and is beneficial to reducing the total volume or the water facing section of the propeller for the movable equipment in the water area. And moreover, a mode that a plurality of motors are adopted to realize, so that even if part of motors fail, other motors can provide certain propelling force, and the use safety of movable equipment in a water area is improved.

The following is described in connection with fig. 1-4.

Referring to fig. 1, the present embodiment provides a water area movable apparatus 100, which includes a movable body 110 and a propulsion device 120, wherein the propulsion device 120 is mounted on the movable body 110 and is used for driving the movable body 110 to move in the water area. The propulsion device 120 may be an outboard motor or an inboard motor. In this embodiment, propulsion device 120 includes a propeller 300. Optionally, the movable body 110 includes a frame 111 for mounting the mover 300.

Fig. 2 illustrates one implementation of a propeller 300 in an embodiment of the present application.

Referring to fig. 2, the propeller 300 includes a mounting frame 23, an output shaft 11, a propeller 12, a transmission assembly 13, and a plurality of motors 14. The motor 14 is mounted on a frame 111 (see fig. 1). The output shaft 11 has a first hub 15. The propeller 12 is fixed to the output shaft 11 and rotatable about a first axis 15. The motor 14 is respectively connected with the output shaft 11 in a transmission way through the transmission component 13. The motors 14 are respectively arranged in a staggered manner relative to the first axis 15 in the first surface 16, wherein the first surface 16 is a surface perpendicular to the first axis 15. The offset arrangement in this embodiment means that the motor 14 and the first shaft center 15 are offset from each other in the first surface 16, so as to reduce the overlapping area of the projections of the motor 14 and the first shaft center in the first surface 16, and reduce the blocking effect of the motor 14 on the propeller 12. For example, the motor 14 may be offset in the first surface 16 so as to be completely offset from the propeller 12 without facing portions, or the motor 14 may be offset so as to reduce the facing areas of both, which is not limited herein.

By the above structure, the plurality of motors 14 are respectively driven by the transmission assembly 13 to drive the propeller 12, that is, the plurality of motors 14 are connected in parallel in a transmission manner, so that the motors 14 can be simultaneously started to obtain superimposed driving force when needed, the maximum driving force of the propeller 300 is enough, and when the movable equipment 100 in the water area is in a low-speed running state, only part of the motors 14 can be turned off. In addition, the use of multiple motors 14 instead of a single, higher power motor 14 can also reduce the overall volume of the motor 14. The volume or upstream face of a single motor 14 is greater than the total upstream face when implemented with a plurality of smaller motors 14, with the same maximum power that can be provided. And the use of a plurality of smaller motors 14 facilitates the placement of the motors 14 and the full use of structural space, which facilitates the reduction of the overall volume or upstream surface of the propeller 300 for the water area mobile device 100. In addition, the mode of realizing a plurality of motors 14 is adopted, so that even if part of motors 14 fail, other motors 14 can provide certain propelling force, and the use safety of the movable water area equipment 100 is improved.

While the known technique for increasing power by increasing the diameter or length of the individual motors 14 has the following problems: increasing the radius of the motor 14 easily causes large water resistance and reduces the driving efficiency; increasing the length of the motor 14 results in high manufacturing costs and increased manufacturing difficulties.

The motor 14 may be any type of motor such as a brush motor, a brushless motor, a permanent magnet motor, a synchronous motor, an asynchronous motor, etc., and when energized, the rotor of the motor 14 and the motor shaft rotate to output torque. The motor shaft serves as an input shaft 17 to input torque to the transmission assembly 13. The input shaft 17 has a second axis 18, and is capable of being driven to rotate about the second axis 18 to output torque. The input shaft 17 is drivingly connected to the output shaft 11 through the drive assembly 13.

In this embodiment, the input shaft 17 is spaced parallel to the output shaft 11 such that the first axis 15 is parallel to the second axis 18. In other embodiments, the input shaft 17 and the output shaft 11 may be disposed at a set angle.

In this embodiment, the plurality of input shafts 17 are symmetrically distributed about the first axial center 15. For example, as shown in fig. 2, there are two motors 14, a first motor 19 and a second motor 20, respectively. The first motor 19 and the second motor 20 are circumferentially distributed around the central shaft first axis 15 of the output shaft 11. In other embodiments, the motor 14 may be other numbers, such as three, four, etc.

In this embodiment, the transmission assembly 13 includes a first gear 21 and a plurality of second gears 22. The first gear 21 is connected to the output shaft 11, and the plurality of second gears 22 are correspondingly connected to the plurality of input shafts 17. The connection mode of the first gear 21 and the output shaft 11 may be a key connection, an interference fit connection or other connection modes, and only the two are required to be transmitted and twisted; the connection between the second gear 22 and the input shaft 17 may be a keyed connection, an interference fit connection or other connection, as long as the two are torsionally transmitted. In this way, the rotation output by each input shaft 17 can drive the first gear 21 to rotate through the second gear 22 connected with each input shaft, and further drive the output shaft 11 and the propeller 12 to rotate. The plurality of second gears 22 are respectively engaged with the first gears 21. In the embodiment in which the plurality of input shafts 17 are symmetrically distributed about the first axial center 15, the plurality of second gears 22 are symmetrically distributed about the first gear 21. In this way, each motor 14 can be started simultaneously, so that the corresponding second gear 22 drives the first gear 21 to rotate and then drives the propeller 12 to rotate, superposition of output power is realized, and larger total output power is obtained; it is also possible to shut down part of the motor 14 as required and to drive the propeller 12 with only part of the motor 14, so that a smaller total output power is obtained.

The second axis 18 is shown in this embodiment as being spaced from the first axis 15 by a distance less than the radius of the propeller 12 but away from the center of the propeller 12.

In other implementations of this embodiment, the distance from the second axis 18 to the first axis 15 is greater than the radius of the propeller 12 and less than the sum of the radius of the propeller 12 and the radius of the motor 14. The radius of the propeller 12 is the radius of the circle where the track of the rotary blade tip is located when the propeller 12 does not advance, and the radius of the motor 14 refers to the radius of the circle where the outer cylindrical surface of the cylindrical shell of the motor 14 is located. In this way, the shielding surface of the motor 14 against the propeller 12 can be reduced while avoiding an excessive overall size of the propeller 300.

In other embodiments of the present embodiment, the distance from the second axis 18 to the first axis 15 may be greater than or equal to the sum of the radius of the propeller 12 and the radius of the motor 14, so that the motor 14 does not shade the propeller 12 at all, the water-facing section is reduced to the greatest extent, and the driving efficiency is ensured.

In this embodiment, the propeller 300 further includes a mounting frame 23, and the transmission assembly 13 is mounted on the mounting frame 23. The output shaft 11 is rotatably mounted to the mounting frame 23 via a first bearing member 241, and the first gear 21 is mounted to the output shaft 11 and is rotatable with the output shaft 11 by means of a key transmission or the like. Each input shaft 17 is rotatably mounted to the mounting frame 23 by a second bearing member 242, respectively, and the second gear 22 is mounted to the corresponding input shaft 17 and is rotatable with the input shaft 17 by a key transmission or the like. The first bearing member 241 and the second bearing member 242 may each be a tapered roller bearing or an angular contact ball bearing or a thrust self-aligning bearing. In other embodiments, the first bearing member 241/second bearing member 242 may also eliminate or employ other rotational engagement structures.

In this embodiment, the mounting frame 23 is provided with a receiving space 28, and the input shaft 17 and the output shaft 11 extend into the receiving space 28 respectively. The first gear 21 is mounted on a portion of the output shaft 11 extending into the accommodating space 28, and is accommodated in the accommodating space 28. The second gear 22 is mounted on a portion of the input shaft 17 extending into the accommodating space 28, and is accommodated in the accommodating space 28. Optionally, the mounting frame 23 includes a cover 29 and a housing 30 that are detachably connected, and the cover 29 and the housing 30 together define the accommodating space 28. Optionally, a static seal ring 44 is provided at the mating face of the cover 29 and the housing 30 to improve the contact tightness of the two. One end of the input shaft 17 passes through the housing 30 in clearance fit with the cover 29, and the output shaft 11 passes through the cover 29 in clearance fit with the housing 30. As such, the propeller 12 and the motor 14 are located on both sides of the mounting frame 23, respectively.

In this embodiment, the accommodating space 28 is a sealed space, and contains cooling lubricant 50 therein for cooling and lubricating the transmission assembly 13, such as the first gear 21 and the second gear 22. Compared with air cooling, water cooling and the like adopted in the prior art, the scheme adopts the cooling lubricating oil 50 arranged in the accommodating space 28 enclosed by the transmission assembly 13 for cooling and lubricating, has higher cooling effect, and has the effect of reducing friction through interval lubrication.

In this embodiment, optionally, the cover 29 is provided with a first through hole 31, and the housing 30 is provided with a first groove 32 corresponding to the first through hole 31. The first through hole 31 and the first groove 32 are respectively provided with a first bearing member 241, and the output shaft 11 passes through the first through hole 31 and then extends into the first groove 32, and rotates the bearing member 24 mounted at the first through hole 31 and the first groove 32. In the mounting, the first bearing member 241 may be mounted to the output shaft 11 first, and then the output shaft 11 mounted with the first bearing member 241 may be rotatably supported at the first recess 32 and the first through hole 31 of the mounting frame 23. Similarly, the housing 30 is provided with a plurality of second through holes 33, and the cover 29 is provided with a second groove 34 corresponding to the second through holes 33; the second through hole 33 and the second groove 34 are respectively provided with a second bearing piece 242, and the input shaft 17 passes through the second through hole 33 and then extends into the second groove 34, and rotates the second bearing piece 242 which is provided at the second through hole 33 and the second groove 34. In the mounting, the second bearing member 242 may be mounted to the input shaft 17 first, and then the input shaft 17 with the second bearing member 242 mounted thereon may be rotatably supported at the second recess 34 and the second through hole 33 of the mounting frame 23.

In this embodiment, the first bearing member 241 for rotationally mounting the output shaft 11 may be the tapered roller bearing 25 shown in fig. 2, or may be the angular contact ball bearing 26 shown in fig. 3 or the thrust self-aligning bearing 27 shown in fig. 4, or may be a hybrid of the above-mentioned bearings, while securing the axial load-bearing capacity of the first bearing member 241.

Optionally, the propeller 300 in this embodiment further includes a first seal ring 35 sealed between the mounting frame 23 and the output shaft 11, where the first seal ring 35 is attached to the outer peripheral surface of the output shaft 11 on the inner side, attached to the end surface of the mounting frame 23 near the first through hole 31 on the outer side, or attached to the end surface of the outer ring of the first bearing 241. The propeller 300 further includes a second seal ring 36 sealed between the mounting frame 23 and the input shaft 17, and an outer ring of the second seal ring 36 is fitted to an inner surface of the second through hole 33 and an inner ring is fitted to a peripheral surface of the input shaft 17. The accommodating space 28 can be a closed space by the sealing action of the first sealing ring 35 and the second sealing ring 36. The first seal ring 35 and the second seal ring 36 can block the cooling lubricant 50 from leaking out or prevent external liquid (such as water) from entering the accommodating space 28.

The embodiment of the present application also provides a water area mobile device control method, which is based on the propeller 300 for a water area mobile device, and the water area mobile device control method includes:

the total power output to the output shaft 11 and the rotational speed are controlled by controlling the output power of each motor 14 and/or the transmission efficiency of the transmission assembly 13, respectively. Control of the transmission efficiency of the transmission assembly 13 may be achieved by switching different transmission ratios.

In some embodiments, the water area mobile device control method may include the steps of:

upon receipt of a control signal to operate the water movable apparatus 100 at a greater overall power and rotational speed, more or all of the motors 14 are controlled to be simultaneously activated to drive the propeller 12 to rotate and/or, in combination with controlling the transmission assembly 13 to switch to a greater acceleration gear ratio;

upon receipt of a control signal that causes the water movable apparatus 100 to operate at a lower overall power and rotational speed, the control section motor 14 is turned off and/or, in combination with the control transmission assembly 13, is switched to a lower acceleration gear ratio.

In view of the above description, the propeller 300 for a water area movable apparatus in the embodiment of the present application has the advantages of small water-facing area, high driving efficiency, and high use safety.

The above embodiments are only for illustrating the technical solution of the present application and not for limiting, and although the present application has been described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or substituted without departing from the spirit and scope of the technical solution of the present application.

Claims (10)

1. A propeller for a water movable apparatus, the propeller comprising:

the mounting frame is used for defining a containing space;

one end of the output shaft is accommodated in the accommodating space, and the other end of the output shaft extends out of the accommodating space;

the propeller is connected to one end of the output shaft, which is positioned outside the accommodating space, and can rotate along with the output shaft relative to the mounting frame;

a plurality of motors, each of which is provided with an input shaft for outputting torque; the input shaft is in running fit with the mounting frame and is spaced side by side with the output shaft;

the transmission assembly is accommodated in the accommodating space, and the plurality of input shafts are in transmission connection with the output shaft through the transmission assembly, so that the power of the plurality of motors is transmitted to a propeller connected with the output shaft;

and the cooling lubricating oil is accommodated in the accommodating space and cools and lubricates the transmission assembly.

2. The propeller as recited in claim 1, wherein:

the input shaft is spaced parallel to the output shaft.

3. The propeller as recited in claim 2, wherein:

the plurality of input shafts are circumferentially distributed with the output shaft as a center.

4. The propeller as recited in claim 1, wherein:

the transmission assembly includes a first gear and a plurality of second gears;

the first gears are connected to the output shafts, and the plurality of second gears are correspondingly connected to the plurality of input shafts;

the second gears are respectively meshed with the first gears.

5. The propeller of claim 4, wherein:

a plurality of the second gears are circumferentially distributed about the first gear.

6. The propeller as recited in claim 1, wherein:

the propeller comprises a first sealing ring sealed between the mounting frame and the output shaft and a second sealing ring sealed between the mounting frame and the input shaft, so that the accommodating space is a closed space.

7. The propeller as recited in claim 2, wherein:

the distance from the output shaft to the input shaft is larger than the radius of the propeller and smaller than the sum of the radius of the propeller and the radius of the motor.

8. The propeller as recited in claim 2, wherein:

the distance from the output shaft to the input shaft is greater than or equal to the sum of the radius of the propeller and the radius of the motor.

9. A water area mobile device, comprising:

a movable body; and

a propulsion device mounted to the movable body;

wherein the propulsion device comprises a propeller according to any one of claims 1-8.

10. A water area mobile device according to claim 9, wherein:

the propelling device comprises a frame, the frame is connected with the movable main body, and the motor is arranged on the frame.

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