CN221214537U - Electric propeller and movable equipment for water area - Google Patents

Abstract

The application is suitable for the field of marine propulsion, and discloses an electric propeller and movable equipment in a water area. The electric propeller comprises a shell, a motor, a speed reducer assembly, a pump assembly and a propeller. The shell is provided with a first cavity and a second cavity isolated from the first cavity, and the second cavity is used for containing cooling lubricating liquid. The motor is arranged in the first cavity. The speed reducer assembly is arranged in the second cavity and is provided with an input shaft and an output shaft. The pump assembly is arranged in the second cavity and connected with the output shaft so as to pump liquid under the torque action of the output shaft. The electric propeller provided by the application can pump the cooling and lubricating liquid to the speed reducer assembly under larger thrust, so that the cooling and lubricating effects on the speed reducer assembly can be stably realized, the service life of the speed reducer assembly is prolonged, and the failure rate of the electric propeller is reduced.

Description

Electric propeller and movable equipment for water area

Technical Field

The application relates to the field of marine propulsion, in particular to an electric propeller and movable equipment in a water area.

Background

As the power demand of marine propulsion increases, high power motors are increasingly being used in marine propulsion. As the power of the motor increases, a speed reducer needs to be disposed between the motor and the propeller in order to increase the torque of the propeller. Because a plurality of rotating parts of the speed reducer are mechanically matched, the speed reducer is easy to generate high temperature and has large friction loss, so the service life of the speed reducer is relatively low, and the failure rate of the marine propeller is increased.

Disclosure of utility model

The application aims to provide an electric propeller and water area movable equipment, which can prolong the service life of a speed reducer and reduce the failure rate.

The application provides an electric propeller, comprising:

the shell is provided with a first cavity and a second cavity isolated from the first cavity, the second cavity is used for containing cooling lubricating liquid, and the cooling lubricating liquid can exchange heat with the shell;

the motor is arranged in the first cavity and is provided with a motor shaft

The speed reducer assembly is arranged in the second cavity and is provided with an input shaft and an output shaft, and the input shaft is connected with the motor shaft;

The pump assembly is arranged in the second cavity, is connected with the output shaft and is used for pumping liquid under the torque action of the output shaft, and the cooling lubricating liquid can be pumped away from the bottom of the second cavity under the pumping liquid of the pump assembly and flows back to the bottom of the second cavity after being contacted with at least part of the speed reducer assembly;

and the propeller is positioned outside the shell and connected with the output shaft.

In the electric propeller, the pump assembly is further provided with an input shaft bearing which is matched with the input shaft and fixed in the shell, and an input gear which is fixed with the input shaft; the pump assembly is further provided with an output shaft bearing which is matched with the output shaft and fixed in the shell, and an output gear which is fixed with the output shaft and receives rotation torque from the input gear.

In the electric propeller disclosed by the application, the pump assembly comprises a pump shell, a rotor assembly, a liquid inlet channel and a liquid outlet channel, wherein the rotor assembly is arranged in the pump shell, the rotor assembly is connected with the output shaft, the rotor assembly is communicated with the liquid inlet channel and the liquid outlet channel, the pump shell is provided with a liquid inlet channel and a liquid outlet channel, the liquid inlet channel at least forms part of the liquid inlet channel, the liquid outlet channel at least forms part of the liquid outlet channel, the pump shell is arranged in the shell, and the rotor assembly can pump the cooling and lubricating liquid of the liquid inlet channel to the liquid outlet channel.

In the electric propeller of the present application, the pump housing is provided between the input shaft and the output shaft.

In the electric propeller of the present application, the pump housing is provided with a first bearing mounting groove near the input shaft, and the input shaft bearing is fixed to the first bearing mounting groove.

In the electric propeller of the present application, the pump housing is provided with a first liquid outlet hole, the first liquid outlet hole is communicated with the first bearing mounting groove and the liquid outlet channel, and the cooling and lubricating liquid can flow to at least one of the end part of the input shaft and the input shaft bearing matched with the first bearing mounting groove along the first liquid outlet hole.

In the electric propeller, the pump shell is provided with a second bearing mounting groove close to the output shaft, and the output shaft bearing is fixed in the second bearing mounting groove.

In the electric propeller of the application, the pump housing is provided with a second liquid outlet hole, the second liquid outlet hole is communicated with the second bearing mounting groove and the liquid outlet channel, and the cooling lubricating liquid can flow to at least one of the end part of the output shaft and the output shaft bearing matched with the second bearing mounting groove along the second liquid outlet hole.

In the electric propeller of the present application, the output shaft passes through the pump housing and is connected to the rotor assembly.

In the electric propeller disclosed by the application, the rotor assembly comprises a first rotor shaft, a first rotor and a second rotor, wherein the first rotor shaft is connected with the output shaft, the first rotor is concentrically connected with the first rotor shaft, an eccentric hole is formed in the second rotor, the first rotor is eccentrically matched with the eccentric hole, and cooling lubricating liquid is pumped to the liquid outlet channel from the liquid inlet channel through a gap between the eccentric hole and the first rotor.

In the electric propeller, the rotor assembly further comprises a rotor limiting ring, and the rotor limiting ring is sleeved on the outer peripheral side of the second rotor so as to limit the offset position of the second rotor relative to the first rotor.

In the electric propeller disclosed by the application, the liquid outlet channel is provided with at least one forward rotation liquid outlet channel and at least one reverse rotation liquid outlet channel, when the output shaft rotates forward, the liquid outlet rate of the forward rotation liquid outlet channel is larger than that of the reverse rotation liquid outlet channel, and when the output shaft rotates reversely, the liquid outlet rate of the reverse rotation liquid outlet channel is larger than that of the forward rotation liquid outlet channel.

In the electric propeller disclosed by the application, the pump assembly is provided with the blocking piece, the rotor limiting ring is in concentric running fit with the second rotor, and the blocking piece is used for positioning the rotating position of the rotor limiting ring so as to position the second rotor relative to the offset direction of the first rotor.

In the electric propeller, when the output shaft rotates positively, the rotor limiting ring rotates to a first position and is in interference with the blocking piece, and a gap offset between the second rotor and the first rotor is communicated with the forward rotation liquid outlet channel; when the output shaft rotates reversely, the rotor limiting ring rotates to a second position and is in interference with the blocking piece, and a gap offset between the second rotor and the first rotor is communicated with the reverse liquid outlet channel.

The application also provides a water movable device, which comprises a water carrier and the electric propeller, wherein the electric propeller is connected with the water carrier.

The electric propeller and the water area movable equipment provided by the application can be used for enabling the cooling lubricating liquid in the first cavity to exchange heat with the shell so as to cool the cooling lubricating liquid. Because the pump assembly is located in the second cavity and is connected with the output shaft, the pump assembly can finish pumping liquid under the torque action of the output shaft, and the cooling and lubricating liquid is pumped to be in contact with the speed reducer assembly so as to cool and lubricate the speed reducer assembly. The stable cooling and lubrication of the speed reducer assembly can be realized without additional power structure and space. The electric propeller provided by the application can pump the cooling and lubricating liquid to the speed reducer assembly under larger thrust, so that the cooling and lubricating effects on the speed reducer assembly can be stably realized, the service life of the speed reducer assembly is prolonged, and the failure rate of the electric propeller is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of an electric propulsion device according to an embodiment of the present application;

Fig. 2 is a schematic structural view of an electric propeller according to an embodiment of the present application;

FIG. 3 is an enlarged view at A in FIG. 1;

FIG. 4 is a schematic view of the mounting structure of the pump assembly and the decelerator assembly of the electric propeller provided by the embodiment of the present application;

FIG. 5 is one of the schematic structural views of the pump assembly of the electric propeller provided by the embodiment of the present application;

FIG. 6 is a second schematic view of a pump assembly of an electric propulsion provided in an embodiment of the present application;

FIG. 7 is an exploded schematic view of a pump assembly of an electric propulsion provided in an embodiment of the present application;

Fig. 8 is a schematic view of a water area mobile device according to an embodiment of the present application.

Reference numerals illustrate:

1000: a water area movable device;

100: an electric propeller;

10: a housing; 10a: a first cavity; 10b: a second cavity;

20: a motor; 21: a motor shaft;

30: a decelerator assembly; 311: an input shaft; 312: an input shaft bearing; 313: an input gear;

321: an output shaft; 322: an output shaft bearing; 323: an output gear;

40: a pump assembly;

40a: a liquid inlet channel; 40b: a liquid outlet channel; 40c: a first liquid outlet hole; 40d: a second liquid outlet hole;

41: a pump housing; 411: a first housing; 412: a second housing; 41a: a first bearing mounting groove; 41b: a second bearing mounting groove;

401: a rotor assembly; 42: a first rotor shaft; 43: a first rotor; 44: a second rotor; 45: a rotor limit ring; 451: a mating boss;

46: a blocking member;

47: a catheter; 471: a first liquid spraying port; 472: a second liquid spraying port; 473: a third liquid spraying port;

48: a filter; 481: a magnetic attraction piece; 50: a propeller;

200: and (5) a water area carrier.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship between the components, the movement condition, etc. in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.

It will also be understood that when an element is referred to as being "mounted" or "disposed" on 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 be indirectly connected to the other element through intervening elements.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.

Some embodiments of the present application are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

As shown in fig. 1 and 2, an electric propeller 100 according to an embodiment of the present application includes a housing 10, a motor 20, a decelerator assembly 30, a pump assembly 40, and a propeller 50.

The housing 10 is provided with a first cavity 10a and a second cavity 10b isolated from the first cavity 10a, the second cavity 10b being for containing a cooling and lubricating liquid which can exchange heat with the housing 10. The motor 20 is disposed in the first cavity 10a, and the motor 20 is provided with a motor shaft 21. The speed reducer assembly 30 is disposed in the second cavity 10b, and the speed reducer assembly 30 is provided with an input shaft 311 and an output shaft 321, the input shaft 311 being connected to the motor shaft 21. The pump assembly 40 is disposed in the second cavity 10b, the pump assembly 40 is connected to the output shaft 321 to pump the liquid under the torque of the output shaft 321, and the cooling and lubricating liquid can be pumped away from the bottom of the second cavity 10b under the pump liquid of the pump assembly 40 and flows back to the bottom of the second cavity 10b after contacting at least part of the reducer assembly 30. The propeller 50 is located outside the housing 10 and is connected to the output shaft 321.

It will be appreciated that the cooling and lubrication fluid is capable of heat exchanging with the housing 10 to reduce the temperature of the cooling and lubrication fluid so that the cooling and lubrication fluid is capable of both cooling and lubrication when in contact with the retarder assembly 30, for example, to avoid overheating damage due to dry friction. Further ensuring stable operation of the reducer assembly 30.

It should be noted that, in order to cool the cooling and lubricating liquid through the casing 10, a water body outside the casing 10 may be used to cool the cooling and lubricating liquid, for example, when the electric propeller 100 operates underwater, the water body outside the casing 10 may exchange heat with the casing 10, and then exchange heat with the cooling and lubricating liquid through the casing 10 to cool the cooling and lubricating liquid. Or a water cooling structure or an air cooling structure can be arranged in the shell 10, and after the air cooling or the heat exchange between the cooling liquid and the shell 10, the cooling lubricating liquid is cooled through the heat exchange between the shell 10 and the cooling lubricating liquid, so that the electric propeller 100 can be ensured to stably cool the cooling lubricating liquid under any condition.

It will be appreciated that the speed reducer may reduce the rotational speed of the motor shaft 21 and increase the torque output from the motor shaft 21 to ensure uniform and stable rotation of the propeller 50 and increase the thrust of the propeller 50, so that the electric propeller 100 can stably operate.

It will be appreciated that since the motor 20 is disposed within the first cavity 10a, the first cavity 10a is isolated from the second cavity 10b, and therefore, the cooling lubricant does not contact the motor 20. The cooling and lubricating fluid circulates in the second chamber 10b under the influence of the pump assembly 40 to cool and lubricate the speed reducer assembly 30.

It will be appreciated that since the pump assembly 40 is capable of pumping fluid under the torque of the output shaft 321, no additional power structure is required in the housing 10, and a simple structure in the housing 10 is ensured without additionally increasing the space in the housing 10. Under the pumping of the pump assembly 40, the cooling and lubrication fluid at the bottom of the second chamber 10b can be pumped into contact with the decelerator assembly 30 to cool and lubricate the decelerator assembly 30, ensuring stable operation of the decelerator assembly 30. For example, the bearing shaft system in the reducer may be cooled and lubricated. Thus, the present application also provides a speed reducer assembly 30 that does not require complete immersion in the cooling lubricant to avoid excessive efficiency losses due to churning. Of course, the speed reducer assembly 30 may also be partially immersed in the cooling and lubrication fluid, as desired, such that the speed reducer assembly 30 may also agitate the cooling and lubrication fluid by rotation of itself.

Compared with other positions of the speed reducer assembly 30, the rotation speed of the output shaft 321 is small, and the torque is large, so that the pump assembly 40 can pump liquid under the action of the small rotation speed and the large torque, so that the cooling and lubricating effect can be stably realized on the speed reducer assembly 30 by pumping the cooling and lubricating liquid to the speed reducer assembly 30 under the action of the large thrust. Also, in this embodiment, the pump assembly 40 emits less noise and the operational life of the pump assembly 40 can be longer.

It can be appreciated that, since the pump assembly 40 is disposed in the second cavity 10b, only the input shaft 311 and the output shaft 321 of the reducer assembly 30 are connected to the outside of the second cavity 10b in the second cavity 10b, and therefore, no interface is required to be disposed on the cavity wall of the second cavity 10b, and the structure is simple and the installation and the manufacturing are convenient.

In the electric propulsion device 100 provided by the embodiment of the application, the cooling and lubrication liquid in the first cavity 10a can exchange heat with the casing 10, so that the cooling and lubrication liquid is cooled. Since the pump assembly 40 is located in the second chamber 10b and is connected to the output shaft 321, the pump assembly 40 is capable of completing pumping of the fluid under the torque of the output shaft 321, pumping the cooling and lubrication fluid into contact with the speed reducer assembly 30, so as to cool and lubricate the speed reducer assembly 30. Stable cooling and lubrication of the reducer assembly 30 is achieved without additional power structure and space. The electric propeller 100 provided by the application can pump the cooling and lubricating liquid to the speed reducer assembly 30 under larger thrust, so that the cooling and lubricating effects on the speed reducer assembly 30 can be stably realized, the service life of the speed reducer assembly 30 is prolonged, and the failure rate of the electric propeller 100 is reduced.

The cooling and lubricating fluid is illustratively an oil fluid, which may not only enable efficient heat exchange, but also not affect the operation of the motor 20 and/or the reduction gear when in contact therewith, and may also enable lubrication of the motor 20 and/or the reduction gear. The cooling and lubricating liquid may be other heat exchange liquid having insulation and lubricating effects, and is not limited.

In the present application, at least the first cavity 10a is disposed at a portion of the housing 10 under water, and the first cavity 10a is adjacent to the second cavity 10b, so as to reduce the distance from the motor 20 to the reducer assembly 30, facilitate the output of the rotational torque of the motor 20 to the reducer assembly 30, and improve the propulsion efficiency of the electric propulsion 100. Because the first cavity 10a is disposed at the underwater portion of the housing 10, the motor 20 can directly exchange heat with water outside the housing 10 through the housing 10, so as to cool the motor 20 without an additional cooling system, thereby reducing the volume and cost of the electric propeller 100.

As shown in fig. 1 and 2, in some embodiments, the pump assembly 40 is further provided with an input shaft bearing 312 that mates with the input shaft 311 and is fixed within the housing 10, and an input gear 313 that is fixed with the input shaft 311; the pump assembly 40 is further provided with an output shaft bearing 322 fitted with the output shaft 321 and fixed in the housing 10, and an output gear 323 fixed with the output shaft 321, the output gear 323 receiving rotational torque from the input gear 313. The input shaft bearing 312 may be used to support the input shaft 311 so that the input shaft 311 can stably rotate, and the output shaft bearing 322 may be used to support the output shaft 321 so that the output shaft 321 can stably rotate. The input shaft 311 may drive the input gear 313 to rotate during rotation, and transmit rotational torque to the output gear 323 via the input gear 313, thereby driving the output shaft 321 to rotate. In this manner, torque may be transferred to the propeller 50 through the decelerator assembly 30 to achieve stable propulsion of the propeller 50.

Illustratively, the axis of the motor shaft 21, the axis of the input shaft 311, and the axis of the output shaft 321 are collinear. So that the motor 20 and the decelerator assembly 30 are disposed as close to the axial direction of the motor shaft 21 as possible, so as to correspond to the bottom of the housing 10 of the electric propulsion device 100 extending along the axial direction of the motor shaft 21, and the structure in the electric propulsion device 100 is more reasonable and compact. With this structure, the volume of the decelerator assembly 30 is miniaturized, so that the volume of the underwater portion of the electric propulsion device 100 can be reduced, that is, the water facing area (the area of the disk surface of the propeller 50 shielded by the disk surface) of the underwater portion of the electric propulsion device 100 is reduced, the water facing resistance of the electric propulsion device 100 is reduced, and the propulsion efficiency is improved. Of course, the motor shaft 21, the input shaft 311, and the output shaft 321 may be different from each other as needed, as long as torque transmission is possible.

As shown in fig. 3 and 7, in the electric propeller 100 of the present application, the pump assembly 40 includes a pump housing 41, a rotor assembly 401 disposed in the pump housing 41, a liquid inlet path and a liquid outlet path, the rotor assembly 401 is connected to the output shaft 321, the rotor assembly 401 is communicated with the liquid inlet path and the liquid outlet path, the pump housing 41 is provided with a liquid inlet channel 40a and a liquid outlet channel 40b, the liquid inlet channel 40a at least forms part of the liquid inlet path, the liquid outlet channel 40b at least forms part of the liquid outlet path, the pump housing 41 is disposed in the housing 10, and the rotor assembly 401 can pump the cooling lubricant of the liquid inlet channel 40a to the liquid outlet channel 40b. The rotor assembly 401 can pump the cooling and lubrication fluid in the first cavity 10a to the fluid outlet along the fluid inlet path under the torque action of the output shaft 321, and the cooling and lubrication fluid can flow to the speed reducer assembly 30 through the fluid outlet path so as to cool and lubricate the speed reducer assembly 30. Since the rotor assembly 401 is provided in the pump housing 41, the pump housing 41 can be directly mounted to the second chamber 10b when the pump assembly 40 is mounted, and thus the structure is convenient to mount and compact.

It will be appreciated that the liquid inlet channel 40a and the liquid outlet channel 40b are configured on the pump casing 41, and the liquid inlet channel 40a may form part or all of the liquid inlet channel, and the liquid outlet channel 40b may form part or all of the liquid outlet channel. For example, the pump assembly 40 can pump the cooling and lubricating liquid from the bottom of the first cavity 10a directly through an opening at one end of the liquid inlet channel 40a, and the pump assembly 40 can pump the cooling and lubricating liquid from the bottom of the first cavity 10a through the liquid inlet channel 40a and an additional connecting pipeline; the pump assembly 40 may pump the cooling and lubrication fluid to the retarder assembly 30 directly through the opening of the fluid outlet passage 40b, and the pump assembly 40 may also pump the cooling and lubrication fluid to the retarder assembly 30 through a pipe.

As shown in fig. 3 and 4, in some embodiments, a pump housing 41 is provided between the input shaft 311 and the output shaft 321. This allows the pump housing 41 to be brought close to the input shaft 311 and the output shaft 321 so that the pump assembly 40 pumps the cooling lubricant to the shafting position of the input shaft 311 and the shafting position of the output shaft 321. And cooling and lubrication can be more efficiently achieved when the cooling and lubrication liquid can be pumped to the shafting position of the input shaft 311 or the shafting position of the output shaft 321.

As shown in fig. 3, 4 and 5, in some embodiments, a pump housing 41 is provided between the input shaft 311 and the output shaft 321, the pump housing 41 is provided with a first bearing mounting groove 41a near the torque input end 31, and the input shaft bearing 312 is fixed to the first bearing mounting groove 41a. The first bearing mounting groove 41a formed by the pump housing 41 can mount the input shaft bearing 312 for fixing one end of the input shaft 311, and the pump housing 41 can share the housing with the decelerator assembly 30 mounted in the second chamber 10b when mounted in the second chamber 10b, so that the pump assembly 40 and the decelerator assembly 30 can be mounted in the second chamber 10b more reasonably and compactly without occupying additional space. Illustratively, an input shaft bearing 312 at the other end of the input shaft 311 is fixed in a mounting groove formed in the housing 10 to stably support the input shaft 311, achieving stable rotation of the input shaft 311.

As shown in fig. 3, 4 and 5, in some embodiments, the pump housing 41 is provided with a first liquid outlet hole 40c, the first liquid outlet hole 40c communicates with the first bearing mounting groove 41a and the liquid outlet passage 40b, and the cooling lubricating liquid can flow along the first liquid outlet hole 40c to at least one of the end portion of the input shaft 311 and the input shaft bearing 312 that are engaged with the first bearing mounting groove 41 a. The cooling and lubrication fluid pumped to the fluid outlet passage 40b may flow along the first fluid outlet hole 40c to the torque input end 31 to cool or lubricate at least one of the end of the input shaft 311 and the input shaft bearing 312 that are fitted with the first bearing mounting groove 41 a.

As shown in fig. 3, 4, and 6, in some embodiments, a pump housing 41 is provided between the input shaft 311 and the output shaft 321, the pump housing 41 is provided with a second bearing mounting groove 41b near the torque output end 32, and an output shaft bearing 322 is fixed to the second bearing mounting groove 41b. The second bearing mounting groove 41b formed by the construction of the pump housing 41 can mount the output shaft bearing 322 fixed at one end of the output end, and the pump housing 41 can share the housing with the decelerator assembly 30 mounted in the second chamber 10b when mounted in the second chamber 10b, so that the pump assembly 40 and the decelerator assembly 30 can be mounted in the second chamber 10b more reasonably and compactly without occupying additional space. Illustratively, an output shaft bearing 322 at the other end of the output shaft 321 is fixed in a mounting groove formed in the housing 10 to stably support the output shaft 321, achieving stable rotation of the output shaft 321.

As shown in fig. 3, 4 and 6, in some embodiments, the pump housing 41 is provided with a second liquid outlet hole 40d, the second liquid outlet hole 40d being communicated with the second bearing mounting groove 41b and the liquid outlet passage 40b, and the cooling lubricating liquid can flow along the second liquid outlet hole 40d to at least one of the end of the output shaft 321 and the output shaft bearing 322 that are engaged with the second bearing mounting groove 41 b. The cooling and lubrication fluid pumped to the fluid outlet passage 40b may flow to the torque output end 32 along the second fluid outlet hole 40d to cool or lubricate at least one of the end of the output shaft 321 and the output shaft bearing 322 that are engaged with the second bearing mounting groove 41 b.

As shown in fig. 3, 4, and 7, in some embodiments, the output shaft 321 is coupled to the rotor assembly 401 through the pump housing 41. In this way, the aforementioned torque-acting pumping of the pump assembly 40 through the output shaft 321 can be achieved. And the pump assembly 40 can be reasonably compactly disposed in the second chamber 10b where the decelerator assembly 30 is installed without additionally occupying space. For example, the first rotor shaft 42 of the rotor assembly 401 passes through the through hole of the pump housing 41 and is inserted and fixed in the mounting hole of the output shaft 321 toward the pump housing 41 to achieve coaxial fixation.

It will be appreciated that, as shown in fig. 1 to 3, in the present embodiment, when the pump housing 41 is disposed between the input shaft 311 and the output shaft 321, both sides of the pump assembly 40 and the reducer assembly 30 can share the housing, so that the pump assembly 40 and the reducer assembly 30 can be more reasonably and compactly mounted in the second cavity 10b without occupying additional space. Of course, the first bearing mounting groove 41a and the second bearing mounting groove 41b may be alternatively provided on both sides of the pump housing 41 as needed.

It will be appreciated that, in the present embodiment, as shown in fig. 3 to 6, when the pump housing 41 is provided between the input shaft 311 and the output shaft 321, both sides of the pump housing 41 may be provided with a first bearing mounting groove 41a and a second bearing mounting groove 41b, respectively, and both sides of the pump housing 41 may be provided with a first liquid outlet hole 40c and a second liquid outlet hole 40d, respectively, so as to be able to cool or lubricate at least one of the end of the input shaft 311 and the input shaft bearing 312, which are engaged with the first bearing mounting groove 41a, and at least one of the end of the output shaft 321 and the output shaft bearing 322, which are engaged with the second bearing mounting groove 41b, when the cooling and lubrication liquid is pumped to the liquid outlet passage 40 b.

As shown in fig. 4-7, in some embodiments, the pump assembly 40 further includes a liquid conduit 47 secured to the pump housing 41, the liquid conduit 47 interfacing with the liquid outlet passage 40b and being provided with a liquid spray outlet remote from the pump housing 41 for spraying cooling lubricant to a location of the reducer assembly 30 remote from the pump housing 41. It is understood that the catheter 47 may be understood as a part of the outlet channel. The liquid cooling and lubricating liquid can be pumped to the liquid spraying port through the liquid guide pipe 47 so as to spray the cooling and lubricating liquid on the position of the speed reducer, which is far away from the pump shell 41, and further realize cooling and lubricating on the position of the speed reducer, which is far away from the pump shell 41.

Illustratively, the catheter 47 may incorporate the aforementioned first and/or second exit apertures 40c, 40d. In this way, the pump assembly 40 can both cool and lubricate the speed reducer assembly 30 near the pump housing 41 and cool and lubricate the speed reducer assembly 30 far from the pump housing 41. Thus, complete cooling and lubrication of the retarder assembly 30 may be achieved to ensure stable operation of the retarder assembly 30.

As shown in fig. 4-7, in some embodiments, the pump housing 41 is disposed between the input shaft 311 and the output shaft 321, and the catheter 47 is provided with a first liquid spray port 471, the first liquid spray port 471 being proximate to an end of the input shaft 311 remote from the pump housing 41 to spray cooling lubricant onto the end of the input shaft 311 and the corresponding mating input shaft bearing 312. The cooling and lubrication fluid may be ejected from the first liquid ejection port 471 along the liquid guide tube 47 to cool or lubricate at least one of the end of the input shaft 311 remote from the pump housing 41 and the corresponding input shaft bearing 312. When the first liquid outlet 40c is combined, the entire cooling and lubrication of the shafting position of the input shaft 311 can be realized.

As shown in fig. 4-7, in some embodiments, a pump housing 41 is provided between the input shaft 311 and the output shaft 321, and the catheter 47 is provided with a second spray orifice 472, the second spray orifice 472 being proximate to the end of the output shaft 321 remote from the input shaft 311 to spray cooling lubricant to the end of the output shaft 321 and the corresponding mating output shaft bearing 322. The cooling and lubrication fluid may be ejected from the second liquid ejection port 472 along the liquid guide tube 47 to cool or lubricate at least one of the end of the output shaft 321 remote from the pump housing 41 and the corresponding output shaft bearing 322. When the second liquid outlet 40d is combined, the shaft system position of the output shaft 321 can be fully cooled and lubricated.

It will be appreciated that the catheter 47 may be provided with both a first fluid port 471 and a second fluid port 472 to simultaneously provide cooling and lubrication of the shafting position of the input shaft 311 and the shafting position of the output shaft 321. Of course, the catheter 47 may alternatively be provided with the first liquid ejection port 471 and the second liquid ejection port 472, as desired.

As shown in fig. 4 to 7, in some embodiments, the pump housing 41 is provided between the input shaft 311 and the output shaft 321, and the liquid guide tube 47 is provided with a third liquid spray port 473, the third liquid spray port 473 being adjacent between the torque input end 31 and the torque output end 32 to spray the cooling lubricant between the torque input end 31 and the torque output end 32. The cooling and lubrication fluid may be ejected from the third fluid ejection port 473 along the catheter 47 to cool or lubricate the portion of the reducer assembly 30 between the torque input end 31 and the torque output end 32.

As shown in fig. 1, 2 and 7, in some embodiments, the rotor assembly 401 includes a first rotor shaft 42, a first rotor 43 and a second rotor 44, the first rotor shaft 42 is connected to the output shaft 321, the first rotor 43 is concentrically connected to the first rotor shaft 42, an eccentric hole is provided in the second rotor 44, the first rotor 43 is eccentrically matched with the eccentric hole, and cooling and lubricating liquid is pumped from the liquid inlet channel 40a to the liquid outlet channel 40b through a gap between the eccentric hole and the first rotor 43. When the motor 20 is in operation, the first rotor shaft 42 is driven to rotate under the torque action of the output shaft 321, and then the first rotor 43 is driven to rotate, and because the first rotor 43 and the eccentric hole are eccentrically matched, when the first rotor 43 eccentrically rotates relative to the eccentric hole, cooling and lubricating liquid can be continuously pumped from the gap between the eccentric hole and the first rotor 43 to the liquid outlet channel 40b through the liquid inlet channel 40a, so that liquid pumping is completed. The structure is simple and the efficiency is high.

As shown in fig. 1, 2 and 7, the rotor assembly 401 further includes a rotor stop ring 45, and the rotor stop ring 45 is sleeved on the outer peripheral side of the second rotor 44, so as to define a position of the second rotor 44 offset relative to the first rotor 43. After defining the offset position of the second rotor 44, the first rotor 43 can be eccentrically rotated by stabilizing the eccentric hole at a specific position to complete pumping. It will be appreciated that the offset position of the second rotor 44 is required to ensure that the eccentric bores are in communication with both the inlet 40a and outlet 40b passages, thereby ensuring stable pumping of the first rotor 43.

As shown in fig. 1, 2 and 7, in some embodiments, the liquid outlet is provided with at least one forward liquid outlet channel 40b and at least one reverse liquid outlet channel 40b, where the forward liquid outlet channel 40b and the reverse liquid outlet channel 40b are both connected to the rotor assembly 401, and when the output shaft 321 rotates forward, the liquid outlet rate of the forward liquid outlet channel 40b is greater than the liquid outlet rate of the reverse liquid outlet channel 40b, and when the output shaft 321 rotates backward, the liquid outlet rate of the reverse liquid outlet channel 40b is greater than the liquid outlet rate of the forward liquid outlet channel 40 b. The forward rotation liquid outlet channel 40b can stabilize liquid outlet when the output shaft 321 rotates forward, and the reverse rotation liquid outlet channel 40b can stabilize liquid outlet when the output shaft 321 rotates reverse, so as to ensure that the output shaft 321 can stabilize pump liquid during both forward rotation and reverse rotation. For example, when the output shaft 321 rotates forward, the rotor stop ring 45 can bias the second rotor 44 such that the liquid outlet rate of the forward-rotation liquid outlet channel 40b is greater than the liquid outlet rate of the reverse-rotation liquid outlet channel 40 b; when the output shaft 321 is reversed, the rotor stopper 45 can bias the second rotor 44 such that the liquid outlet rate of the reversed liquid outlet channel 40b is greater than that of the normal liquid outlet channel 40 b.

As shown in fig. 1, 2 and 7, the pump assembly 40 is illustratively provided with a stop 46, the rotor stop ring 45 being in concentric rotational engagement with the second rotor 44, the stop 46 being adapted to position the rotational position of the rotor stop ring 45 to position the second rotor 44 in an offset direction relative to the first rotor 43. It will be appreciated that when the first rotor 43 rotates, the first rotor 43 will contact with the second rotor 44 and will also drive the second rotor 44 to rotate in the same direction, and since the rotor stop ring 45 is concentrically and rotatably engaged with the second rotor 44, and will further drive the rotor stop ring 45 to rotate, the blocking member 46 will position the rotational position of the rotor stop ring 45 after the rotor stop ring 45 rotates, and thus can position the offset direction of the second rotor 44.

As shown in fig. 1,2 and 7, for example, when the output shaft 321 rotates forward, the rotor limiter 45 rotates to the first position and collides with the stopper 46, and the gap bias between the second rotor 44 and the first rotor 43 is communicated with the forward rotation liquid outlet passage 40 b; when the output shaft 321 is reversed, the rotor stopper 45 rotates to the second position and abuts against the stopper 46, and the gap between the second rotor 44 and the first rotor 43 is biased to be in communication with the reversed liquid outlet passage 40 b. Thus, the rotor stopper ring 45 can be positioned at different positions by the stopper 46 when the output shaft 321 rotates forward and backward, and the second rotor 44 can be biased at different positions, and the first rotor 43 completes pumping at different positions when the output shaft 321 rotates forward and backward.

As shown in fig. 1, 2 and 7, illustratively, the rotor stop ring 45 is provided with a mating boss 451, one side of the mating boss 451 forms a first blocking portion, the other side of the mating boss 451 forms a second blocking portion, and when the output shaft 321 rotates forward, the rotor stop ring 45 rotates forward, and the first blocking portion abuts against the blocking member 46; when the output shaft 321 rotates reversely, the rotor limiting ring 45 rotates reversely, and the second blocking part abuts against the blocking piece 46. When the output shaft 321 rotates forward, the rotor limiting ring 45 rotates to a first position, the first blocking part abuts against the blocking piece 46 to position the rotor limiting ring 45, and when the output shaft 321 rotates reversely, the rotor limiting ring 45 rotates to a second position, and the second blocking part abuts against the blocking piece 46 to position the rotor limiting ring 45.

In other embodiments, one liquid outlet channel 40b is provided, and the cooling and lubricating liquid in the liquid inlet channel 40a is pumped to the liquid outlet channel 40b when the output shaft 321 rotates forward or backward. The structure is simple, and stable liquid discharge can be ensured, for example, the position of the rotor limit ring 45 can be fixed, so that the first rotor 43 can be ensured to be stable in pumping liquid whether rotating positively or reversely.

As shown in fig. 1 and 5-7, in some embodiments, the pump housing 41 includes a second housing 412 and a first housing 411 that are connected, the rotor assembly 401 is disposed in the second housing 412, and the liquid inlet channel 40a and the liquid outlet channel 40b are disposed between the first housing 411 and the second housing 412. In this way, to effect the installation of the pump assembly 40.

Illustratively, the blocking member 46 is disposed on the first housing 411 to effect a limit of the rotor limit ring 45.

Illustratively, the first rotor shaft 42 passes through the through-hole of the second housing 412 and is inserted and fixed in the mounting hole of the output shaft 321 toward the pump housing 41.

Illustratively, the second housing 412 is provided with a second bearing mounting groove 41b and a second liquid outlet hole 40d, the other side of the second housing 412 and the first housing 411 are surrounded to form a first bearing mounting groove 41a, and the first housing 411 is provided with a first liquid outlet hole 40c to enable cooling or lubrication of at least one of the end of the input shaft 311 and the input shaft bearing 312, which are engaged with the first bearing mounting groove 41a, and at least one of the end of the output shaft 321 and the output shaft bearing 322, which are engaged with the second bearing mounting groove 41b, when the cooling and lubrication liquid is pumped to the liquid outlet passage 40 b.

As shown in fig. 1 and 3, in some embodiments, the pump housing 41 is fixedly attached to the housing 10. In this way, the pump assembly 40 is secured within the second chamber 10b to ensure stable pumping.

As shown in fig. 4 and 7, in some embodiments, a filter 48 is further included, the filter 48 being provided in the intake passage to filter the cooling and lubrication fluid that enters the intake passage. The cooling lubricant pumped by the power pump system may be filtered by a filter 48 to avoid contaminants entering the pump cycle that could affect the cooling and lubrication of the retarder assembly 30.

Illustratively, the filter 48 is provided with a magnetically attractable impurity 481 for attracting magnetically attractable impurities of the cooling lubricating liquid. In this way, the entry of magnetically attractable impurities into the cycle can be further avoided. For example, the magnetic member is disposed adjacent to the outer wall of the filter 48, and can adsorb magnetically attractable impurities in the cooling lubricant when the cooling lubricant enters the filter 48.

Illustratively, the filter 48 is an oil absorption filter 48. The oil suction filter 48 prevents the suction of contaminating impurities, and ensures the cleanliness of the power pump system, so as to ensure the stable circulation of the cooling lubricating liquid.

Illustratively, the filter 48 is a pressure filter 48. The pressure filter 48 may achieve different filtering effects depending on the filter medium to be filled, for example, may adsorb pigments, organic matters, residual chlorine, colloid, etc. in the cooling and lubricating liquid when the activated carbon is filled, so as to ensure stable circulation of the cooling and lubricating liquid.

As shown in fig. 4 and 7, in some embodiments, the filter 48 is removably disposed within the fluid intake. In this way, the filter 48 may be removed as needed to facilitate replacement of a new filter 48 or to clean the filter 48 to provide effective filtration of the cooling lubricant entering the circuit. Illustratively, the filter 48 is a plate filter 48, the filter 48 may be screwed to the liquid inlet of the liquid inlet channel 40a to complete the installation, and the magnetic attraction member 481 may be screwed to the filter 48.

In other embodiments, the filter 48 is non-removably disposed within the fluid intake. In this way, the power pump system can be ensured to stably pump liquid, and the cooling and lubricating liquid entering the liquid inlet path can pass through the filter 48, so that the cooling and lubricating liquid can be effectively filtered. Illustratively, a portion of the inlet passageway may be removably coupled to the pump assembly 40, and the portion of the inlet passageway may be directly removed to facilitate replacement or cleaning of the filter 48.

As shown in fig. 1 and 8, the embodiment of the present application further provides a water movable apparatus 1000, which includes a water carrier 200 and the electric propulsion device 100 described above, wherein the electric propulsion device 100 is connected to the water carrier 200. The electric propulsion 100 may be connected to the water carrier 200 via the housing 10, or via a clamp connected to the housing 10, or via a support assembly connected to the housing, to effect mounting of the electric propulsion 100 to the water carrier 200.

In the water area movable device 1000 provided by the embodiment of the application, the electric propeller 100 can push the water area carrier 200 to move so as to realize that the water area movable device 1000 moves on the water area, and in the electric propeller 100, the cooling and lubricating liquid in the first cavity 10a can exchange heat with the shell 10 so as to cool the cooling and lubricating liquid. Since the pump assembly 40 is located in the second chamber 10b and is connected to the output shaft 321, the pump assembly 40 is capable of completing pumping of the fluid under the torque of the output shaft 321, pumping the cooling and lubrication fluid into contact with the speed reducer assembly 30, so as to cool and lubricate the speed reducer assembly 30. Stable cooling and lubrication of the reducer assembly 30 is achieved without additional power structure and space. The water area movable equipment 1000 provided by the application can pump the cooling and lubricating liquid to the speed reducer assembly 30 under larger thrust, so that the cooling and lubricating effects on the speed reducer assembly 30 can be stably realized, the service life of the speed reducer assembly 30 is prolonged, and the failure rate of the electric propeller 100 is reduced.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the application, and all equivalent structural changes made by the specification and drawings of the present application or direct/indirect application in other related technical fields are included in the scope of the present application.

Claims (15)

1. An electric propulsion device, comprising:

the shell is provided with a first cavity and a second cavity isolated from the first cavity, the second cavity is used for containing cooling lubricating liquid, and the cooling lubricating liquid can exchange heat with the shell;

the motor is arranged in the first cavity and is provided with a motor shaft

The speed reducer assembly is arranged in the second cavity and is provided with an input shaft and an output shaft, and the input shaft is connected with the motor shaft;

The pump assembly is arranged in the second cavity, is connected with the output shaft and is used for pumping liquid under the torque action of the output shaft, and the cooling lubricating liquid can be pumped away from the bottom of the second cavity under the pumping liquid of the pump assembly and flows back to the bottom of the second cavity after being contacted with at least part of the speed reducer assembly;

and the propeller is positioned outside the shell and connected with the output shaft.

2. The electric propeller of claim 1, wherein the pump assembly is further provided with an input shaft bearing mated with the input shaft and secured within the housing, and an input gear secured with the input shaft; the pump assembly is further provided with an output shaft bearing which is matched with the output shaft and fixed in the shell, and an output gear which is fixed with the output shaft and receives rotation torque from the input gear.

3. The electric propulsion device as claimed in claim 2, wherein the pump assembly comprises a pump housing, a rotor assembly disposed in the pump housing, a liquid inlet passage and a liquid outlet passage, the rotor assembly being connected to the output shaft, the rotor assembly being in communication with the liquid inlet passage and the liquid outlet passage, the pump housing being provided with a liquid inlet passage and a liquid outlet passage, the liquid inlet passage being at least partially configured to form part of the liquid inlet passage, the liquid outlet passage being at least partially configured to form part of the liquid outlet passage, the pump housing being disposed in the housing, the rotor assembly being capable of pumping the cooling lubricant of the liquid inlet passage to the liquid outlet passage.

4. The electric propulsion device of claim 3, wherein the pump housing is disposed between the input shaft and the output shaft.

5. The electric propeller of claim 4, wherein the pump housing is provided with a first bearing mounting groove adjacent the input shaft, the input shaft bearing being secured to the first bearing mounting groove.

6. The electric propeller of claim 5, wherein the pump housing is provided with a first outlet hole that communicates with the first bearing mounting groove and the outlet passage, the cooling and lubrication fluid being able to flow along the first outlet hole to at least one of an end of the input shaft and the input shaft bearing that mate with the first bearing mounting groove.

7. The electric propeller of claim 4, wherein the pump housing is provided with a second bearing mounting groove adjacent the output shaft, the output shaft bearing being secured to the second bearing mounting groove.

8. The electric propeller of claim 7, wherein the pump housing is provided with a second outlet hole that communicates with the second bearing mounting groove and the outlet passage, the cooling and lubrication fluid being able to flow along the second outlet hole to at least one of an end of the output shaft and the output shaft bearing that mate with the second bearing mounting groove.

9. The electric propulsion device of claim 4, wherein the output shaft is coupled to the rotor assembly through the pump housing.

10. The electric propeller of claim 3, wherein the rotor assembly comprises a first rotor shaft, a first rotor and a second rotor, the first rotor shaft is connected to the output shaft, the first rotor is concentrically connected to the first rotor shaft, an eccentric hole is arranged in the second rotor, the first rotor is eccentrically matched with the eccentric hole, and the cooling and lubricating liquid is pumped from the liquid inlet channel to the liquid outlet channel through a gap between the eccentric hole and the first rotor.

11. The electric propeller of claim 10, wherein the rotor assembly further comprises a rotor stop collar that is sleeved on the outer peripheral side of the second rotor to define the offset position of the second rotor relative to the first rotor.

12. The electric propeller of claim 11, wherein the fluid outlet is provided with at least one forward fluid outlet channel and at least one reverse fluid outlet channel, the fluid outlet rate of the forward fluid outlet channel being greater than the fluid outlet rate of the reverse fluid outlet channel when the output shaft is forward rotated, the fluid outlet rate of the reverse fluid outlet channel being greater than the fluid outlet rate of the forward fluid outlet channel when the output shaft is reverse rotated.

13. The electric propeller of claim 12, wherein the pump assembly is provided with a stop, the rotor stop ring being in concentric rotational engagement with the second rotor, the stop being adapted to position the rotational position of the rotor stop ring to position the second rotor in an offset direction relative to the first rotor.

14. The electric propeller of claim 13, wherein when the output shaft is rotated forward, the rotor stop ring rotates to a first position and abuts the blocking member, the gap offset between the second rotor and the first rotor being in communication with the forward-rotation outlet passage; when the output shaft rotates reversely, the rotor limiting ring rotates to a second position and is in interference with the blocking piece, and a gap offset between the second rotor and the first rotor is communicated with the reverse liquid outlet channel.

15. A water mobile device comprising a water carrier and an electric propulsion apparatus according to any one of claims 1 to 14, said electric propulsion apparatus being connected to said water carrier.