Electric propeller and water area movable equipment

Abstract

An electric thruster includes a housing (10), a motor (20), a decelerator assembly (30), a pump assembly (40), and a propeller (50). The shell is provided with a first cavity (10a) and a second cavity (10b) isolated from the first cavity, the motor is arranged in the first cavity, and the speed reducer assembly and the pump assembly are arranged in the second cavity. The speed reducer assembly is coupled with the motor shaft (21). The pump assembly is also coupled with the motor shaft to pump liquid under the torque of the motor shaft. The electric propeller can cool and lubricate the speed reducer assembly, the service life of the speed reducer assembly is prolonged, and the fault rate of the electric propeller is reduced. In addition, the invention further provides the water area movable equipment (1000) comprising the electric propeller.

Description

Technical Field

[0001] The present application relates to the field of marine propulsion, and in particular to an electric propeller and a movable device in water areas. Background Art

[0002] As the power demand for marine propulsion systems increases, high-power motors are increasingly being used in marine propulsion systems. As the power of motors increases, in order to increase the torque of the propeller, a reducer needs to be configured between the motor and the propeller. Due to the mechanical coordination of multiple rotating parts of the reducer, the reducer is prone to high temperatures and high friction losses, so the service life of the reducer is relatively short, which increases the failure rate of marine propulsion systems. Summary of the invention

[0003] The purpose of the present application is to provide an electric propeller and a movable device in water areas, which can increase the service life of the reducer and reduce the failure rate.

[0004] The present application provides an electric propeller, comprising:

[0005] A shell, comprising a first cavity and a second cavity isolated from the first cavity, wherein the first cavity is used to contain a cooling lubricating liquid, and the cooling lubricating liquid can exchange heat with water outside the shell through the shell;

[0006] A motor is disposed in the first cavity, and the motor is provided with a motor shaft;

[0007] A reducer assembly, disposed in the second cavity and coupled to the motor shaft;

[0008] A pump assembly is disposed in the second cavity, the pump assembly is coupled to the motor shaft to pump liquid under the torque of the motor shaft, the cooling lubricating liquid can be pumped away from the bottom of the first cavity under the pumping of the pump assembly, and return to the bottom of the first cavity after contacting at least part of the reducer assembly;

[0009] A propeller is located outside the housing and is connected to the reducer assembly shaft.

[0010] The present application also provides a movable water area device, comprising a water area carrier and the electric propeller as described above, wherein the electric propeller is connected to the water area carrier.

[0011] The electric propeller and the movable device in water area provided by the present application are characterized in that the cooling lubricating liquid in the first cavity can be heat-exchanged with the water outside the housing through the housing to cool the cooling lubricating liquid. Since the pump assembly is located in the second cavity, the pump assembly can complete the pumping of liquid under the torque of the motor shaft, and pump the cooling lubricating liquid into contact with the reducer assembly to achieve cooling and lubrication of the reducer assembly. Stable cooling and lubrication of the reducer assembly can be achieved without the need for additional power structure and space. The electric propeller provided in the present application can achieve cooling and lubrication effects on the reducer assembly, increase the service life of the reducer assembly, and reduce the failure rate of the electric propeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0013] Figure 1 is a cross-sectional schematic diagram of an electric propeller provided in an embodiment of the present application;

[0014] Figure 2 This is one of the structural schematic diagrams of the electric propeller provided in the embodiment of the present application;

[0015] Figure 3 This is the second structural schematic diagram of the electric propeller provided in the embodiment of the present application;

[0016] Figure 4 This is the third structural schematic diagram of the electric propeller provided in the embodiment of the present application;

[0017] Figure 5 It is a schematic diagram of the installation structure of the pump assembly and the reducer assembly of the electric propeller provided in the embodiment of the present application;

[0018] Figure 6 yes Figure 1 The enlarged view of point A in the middle;

[0019] Figure 7 It is one of the structural schematic diagrams of the pump assembly of the electric propeller provided in the embodiment of the present application;

[0020] Figure 8 This is the second structural schematic diagram of the pump assembly of the electric propeller provided in the embodiment of the present application;

[0021] Fig. 9 is an exploded schematic diagram of a pump assembly of an electric propeller provided in an embodiment of the present application;

[0022] Fig.10 It is a schematic diagram of a movable device for use in water areas provided in an embodiment of the present application.

[0023] Description of Figure Numbers:

[0024] 1000: Mobile equipment in water area;

[0025] 100: electric propulsion;

[0026] 10: housing; 10a: first cavity; 10b: second cavity;

[0027] 20: Motor; 21: Motor shaft;

[0028] 30: reducer assembly; 31: torque input end; 311: input shaft; 312: input shaft bearing; 313: input gear;

[0029] 32: torque output end; 321: output shaft; 322: output shaft bearing; 323: output gear;

[0030] 331: intermediate transmission shaft; 332: intermediate shaft bearing; 333a: first intermediate gear; 333b: second intermediate gear;

[0031] 40: Pump assembly;

[0032] 40a: liquid inlet channel; 40b: liquid outlet channel; 40c: first liquid outlet hole; 40d: second liquid outlet hole;

[0033] 41: pump housing; 411: first housing; 412: second housing; 41a: first bearing mounting groove; 41b: second bearing mounting groove; 41c: third bearing mounting groove; 41d: fifth bearing mounting groove; 41e: fourth bearing mounting groove; 41f: sixth bearing mounting groove;

[0034] 401: rotor assembly; 42: first rotor shaft; 43: first rotor; 44: second rotor; 45: rotor limiting ring; 451: matching boss;

[0035] 46: blocking member;

[0036] 47: liquid guide tube; 471: first liquid spraying port; 472: second liquid spraying port; 473: third liquid spraying port;

[0037] 48: filter; 481: magnetic element;

[0038] 50: propeller;

[0039] 200: Water carrier. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0042] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or may be indirectly connected to the other element through an intermediate element.

[0043] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0044] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0045] like Figures 1 to 4 As shown, an electric propeller 100 provided in an embodiment of the present application includes a housing 10 , a motor 20 , a reducer assembly 30 , a pump assembly 40 and a propeller 50 .

[0046] 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 is used to contain cooling lubricating liquid. The cooling lubricating liquid can exchange heat with the water outside the housing 10 through the housing 10. The motor 20 is provided in the first cavity 10a. The motor 20 is provided with a motor shaft 21. The reducer assembly 30 is provided in the second cavity 10b and coupled with the motor shaft 21. The pump assembly 40 is provided in the second cavity 10b. The pump assembly 40 is coupled with the motor shaft 21 to pump liquid under the torque of the motor shaft 21. The cooling lubricating liquid can be pumped away from the bottom of the second cavity 10b under the pumping of the pump assembly 40, and return to the bottom of the second cavity 10b after at least partial contact with the reducer assembly 30. The propeller 50 is located outside the housing 10 and is connected to the reducer assembly 30 shaft.

[0047] It is understandable that the cooling lubricating liquid can be heat exchanged with the water outside the shell 10 through the shell 10 to reduce the temperature of the cooling lubricating liquid, so that the cooling lubricating liquid can be cooled and lubricated at the same time when it contacts the reducer assembly 30, for example, overheating damage caused by dry friction can be avoided. The stable operation of the reducer assembly 30 is guaranteed. For example, when the electric propeller 100 is running underwater, the water outside the shell 10 can be heat exchanged with the shell 10, and then heat exchanged with the cooling lubricating liquid through the shell 10 to cool the cooling lubricating liquid. Compared with other heat exchange methods, this method can directly utilize the water body, without the need to add additional heat dissipation devices, and will not increase the weight of the electric propeller 100. It has low cost and excellent heat exchange effect.

[0048] It can be understood that the reducer can reduce the rotation speed of the motor shaft 21 and increase the torque output by the motor shaft 21 to ensure uniform and stable rotation of the propeller 50, increase the thrust of the propeller 50, and enable the electric propeller 100 to operate stably.

[0049] It is understandable that, since the motor 20 is disposed in the first cavity 10a, and the first cavity 10a is isolated from the second cavity 10b, the cooling lubricating liquid will not contact the motor 20. Under the action of the pump assembly 40, the cooling lubricating liquid circulates in the second cavity 10b to cool and lubricate the reducer assembly 30.

[0050] It is understandable that, since the pump assembly 40 can pump liquid under the torque of the motor shaft 21, there is no need to set up an additional power structure in the housing 10, which can ensure that the structure in the housing 10 is simple and will not increase the space in the housing 10. Under the pumping of the pump assembly 40, the cooling lubricating liquid at the bottom of the second cavity 10b can be pumped to contact the reducer assembly 30 to cool and lubricate the reducer assembly 30 and ensure the stable operation of the reducer assembly 30. For example, the bearing shaft system in the reducer assembly 30 can be cooled and lubricated. In this way, the reducer assembly 30 provided in the present application does not need to be completely immersed in the cooling lubricating liquid to avoid excessive efficiency loss caused by stirring the oil. Of course, as needed, the reducer assembly 30 can also be partially immersed in the cooling lubricating liquid, so that the reducer assembly 30 can also stir the cooling lubricating liquid by its own rotation at the same time, and achieve cooling and lubrication by splashing.

[0051] It can be understood that since the pump assembly 40 is arranged in the second cavity 10b, only the input shaft 311 and the output shaft 321 of the reducer assembly 30 in the second cavity 10b are connected to the outside of the second cavity 10b. Therefore, there is no need to provide an interface connected to the pump assembly 40 on the cavity wall of the second cavity 10b. The structure is simple and convenient for installation and manufacturing.

[0052] In the electric propeller 100 provided in the embodiment of the present application, the cooling lubricating liquid located in the first cavity 10a can be heat-exchanged with the water outside the housing 10 through the housing 10 to cool the cooling lubricating liquid. Since the pump assembly 40 is located in the second cavity 10b, the pump assembly 40 can complete the pumping of liquid under the torque of the motor shaft 21, and pump the cooling lubricating liquid to contact the reducer assembly 30 to achieve cooling and lubrication of the reducer assembly 30. Stable cooling and lubrication of the reducer assembly 30 can be achieved without additional power structure and space. The electric propeller 100 provided in the present application can achieve cooling and lubrication effects on the reducer assembly 30, increase the service life of the reducer assembly 30, and reduce the failure rate of the electric propeller 100.

[0053] Exemplarily, the cooling lubricant is oil, so that efficient heat exchange can be achieved, and when it contacts the reducer assembly 30, it will not affect the operation of the reducer assembly 30, and can lubricate the reducer assembly 30. The cooling lubricant can also be other heat exchange fluids with lubrication effects, without limitation.

[0054] In the present application, the first cavity 10a and the second cavity 10b are both disposed in the underwater portion of the housing 10, and the first cavity 10a is adjacent to the second cavity 10b, thereby reducing the distance from the motor 20 to the reducer assembly 30, facilitating the output of the rotational torque of the motor 20 to the reducer assembly 30 and the pump assembly 40, and improving the propulsion efficiency of the electric propeller 100. Since the first cavity 10a is disposed in the underwater portion of the housing 10, the motor 20 can directly exchange heat with the water outside the housing 10 through the housing 10, thereby realizing cooling of the motor 20, without the need for an additional cooling system to cool the motor 20, and reducing the volume and cost of the electric propeller 100.

[0055] like Figures 1 to 4 As shown, in some embodiments, the reducer assembly 30 is provided with a torque input end 31 and a torque output end 32, the torque input end 31 receives the torque of the motor 20, the torque output end 32 outputs the torque to the propeller 50, and the pump assembly 40 is configured at the torque input end 31 or the torque output end 32, or configured at the portion between the torque input end 31 and the torque output end 32. It can be understood that the pump assembly 40 is configured at different positions of the reducer assembly 30, and can pump liquid under different torques. For example, when the pump assembly 40 is configured at the torque input end 31, it can pump liquid under a larger rotation speed and a smaller torque. When the pump assembly 40 is configured at the torque output end 32, it can pump liquid under a smaller rotation speed and a larger torque. When the pump assembly 40 is configured at the portion between the torque input end 31 and the torque output end 32, it can pump liquid under a moderate rotation speed and a moderate torque. In this way, the pump assembly 40 can be configured at different positions according to different pumping requirements to improve the cooling and lubrication effect of the reducer assembly 30. In this embodiment, the pump assembly 40 is arranged at different positions of the reducer assembly 30, and can pump liquid under the torque of the reducer assembly 30, so that the reducer assembly 30 and the pump assembly 40 can be more compactly arranged in the second cavity 10b without occupying additional space.

[0056] like Figures 1 to 4As shown, in some embodiments, the torque input end 31 is provided with an input shaft 311 that can receive the torque of the motor 20, an input shaft bearing 312 that cooperates with the input shaft 311 and is fixed in the housing 10, and an input gear 313 that is fixed to the input shaft 311; the torque output end 32 is provided with an output shaft 321 that can output torque to the propeller 50, an output shaft bearing 322 that cooperates with the output shaft 321 and is fixed in the housing 10, and an output gear 323 that is fixed to the output shaft 321, and the output gear 323 receives the rotational torque from the input gear 313. The input shaft bearing 312 can be used to support the input shaft 311 so that the input shaft 311 can rotate stably, and the output shaft bearing 322 can be used to support the output shaft 321 so that the output shaft 321 can rotate stably. The input shaft 311 can drive the input gear 313 to rotate during the rotation process, and transmit the rotational torque to the output gear 323 through the input gear 313, thereby driving the output shaft 321 to rotate. In this way, the torque can be transmitted to the propeller 50 through the speed reducer assembly 30 to achieve stable propulsion of the propeller 50 .

[0057] Exemplarily, the axis of the motor shaft 21, the axis of the input shaft 311 and the axis of the output shaft 321 are located in the same straight line. The motor 20 and the reducer assembly 30 are arranged as close to the axial direction of the motor shaft 21 as possible, so as to extend along the axial direction of the motor shaft 21 corresponding to the bottom of the housing 10 of the electric propeller 100, so that the structure inside the electric propeller 100 is more reasonable and compact. Under this structure, the volume of the reducer assembly 30 is miniaturized, so that the volume of the underwater part of the electric propeller 100 can be reduced, that is, the water-facing area of ​​the underwater part of the electric propeller 100 (the area blocked by the propeller 50 disk) is reduced, the water-facing resistance of the electric propeller 100 is reduced, and the propulsion efficiency is improved. Of course, as needed, the motor shaft 21, the input shaft 311 and the output shaft 321 can also be non-coaxial, as long as the torque transmission can be achieved.

[0058] like Figure 1 and Figure 2As shown, in some embodiments, the cooling lubricating liquid pumped out by the pump assembly 40 flows through the input shaft 311. In this way, the cooling lubricating liquid can cool or lubricate the input shaft 311 to ensure that the input shaft 311 can rotate stably. In this embodiment, the cooling lubricating liquid pumped out by the pump assembly 40 can flow through part or all of the input shaft 311. For example, the cooling lubricating liquid pumped out by the pump assembly 40 can flow through one end of the input shaft 311. It can be understood that the pump liquid outlet of the pump assembly 40 can be set close to one end of the input shaft 311, so that the cooling lubricating liquid pumped out by the pump assembly 40 flows through the input shaft 311. The pump liquid outlet of the pump assembly 40 can be close to one end of the input shaft 311 through a pipeline or a housing flow channel, and this embodiment is not limited. Of course, the pump liquid outlet of the pump assembly 40 can also be close to both ends of the input shaft 311, or close to the position between the two ends of the input shaft 311, and this embodiment is not limited.

[0059] like Figure 1 and Figure 2 As shown, in some embodiments, the cooling lubricant pumped out by the pump assembly 40 flows through the input shaft bearing 312. It can be understood that both ends of the input shaft 311 are provided with input shaft bearings 312, that is, both input shaft bearings 312 can be cooled and lubricated under the cooling lubricant. Of course, it is also possible to set the cooling lubricant pumped out by the pump assembly 40 to cool and lubricate only one of the input shaft bearings 312 as needed to increase the cooling and lubrication efficiency, while the other input shaft bearing 312 can be contacted and cooled and lubricated by the cooling lubricant that is rotated and stirred in the second cavity 10b. In this way, the cooling lubricant can cool or lubricate the input shaft bearing 312 to ensure that the input shaft 311 rotates stably relative to the input shaft bearing 312. In this embodiment, the cooling lubricant pumped out by the pump assembly 40 can flow through one or more input shaft bearings 312. For example, the cooling lubricant pumped out by the pump assembly 40 can flow through the input shaft bearing 312 at one end of the input shaft 311.

[0060] In some embodiments, the cooling lubricant pumped out by the pump assembly 40 flows through the input gear 313. In this way, the cooling lubricant can cool or lubricate the input gear 313 to ensure that the input gear 313 can stably transmit torque. In this embodiment, the cooling lubricant pumped out by the pump assembly 40 can flow through part or all of the input gear 313, for example, the cooling lubricant pumped out by the pump assembly 40 can flow through the position where the input gear 313 meshes with other gears in the reducer assembly 30.

[0061] like Figure 1 and Figure 2As shown, in some embodiments, the cooling lubricant pumped out by the pump assembly 40 flows through the output shaft 321. In this way, the cooling lubricant can cool or lubricate the output shaft 321 to ensure that the output shaft 321 can rotate stably. In this embodiment, the cooling lubricant pumped out by the pump assembly 40 can flow through part or all of the output shaft 321. For example, the cooling lubricant pumped out by the pump assembly 40 can flow through one end of the output shaft 321. It can be understood that the pump liquid outlet of the pump assembly 40 can be set close to one end of the output shaft 321, so that the cooling lubricant pumped out by the pump assembly 40 flows through the output shaft 321. The pump liquid outlet of the pump assembly 40 can be close to one end of the output shaft 321 through a pipeline or a housing flow channel, and this embodiment is not limited. Of course, the pump liquid outlet of the pump assembly 40 can also be close to both ends of the output shaft 321, or close to the position between the two ends of the output shaft 321, and this embodiment is not limited.

[0062] like Figure 1 and Figure 2 As shown, in some embodiments, the cooling lubricant pumped out by the pump assembly 40 flows through the output shaft bearing 322. It can be understood that both ends of the output shaft 321 are provided with output shaft bearings 322, that is, both output shaft bearings 322 can be cooled and lubricated under the cooling lubricant. Of course, the cooling lubricant pumped out by the pump assembly 40 can also be set as needed to cool and lubricate only one of the output shaft bearings 322 to increase the cooling and lubrication efficiency, while the other output shaft bearing 322 can be contacted with the cooling lubricant that is rotated and stirred in the second cavity 10b for cooling and lubrication. In this way, the cooling lubricant can cool or lubricate the output shaft bearing 322 to ensure that the output shaft 321 rotates stably relative to the output shaft bearing 322. In this embodiment, the cooling lubricant pumped out by the pump assembly 40 can flow through one or more output shaft bearings 322. For example, the cooling lubricant pumped out by the pump assembly 40 can flow through the output shaft bearing 322 at one end of the output shaft 321.

[0063] In some embodiments, the cooling lubricant pumped out by the pump assembly 40 flows through the output gear 323. In this way, the cooling lubricant can cool or lubricate the output gear 323 to ensure that the output gear 323 can stably transmit torque. In this embodiment, the cooling lubricant pumped out by the pump assembly 40 can flow through part or all of the output gear 323, for example, the cooling lubricant pumped out by the pump assembly 40 can flow through the position where the output gear 323 meshes with other gears in the reducer assembly 30.

[0064] like Figures 1 to 4As shown, in some embodiments, the reducer assembly 30 is further provided with an intermediate transmission shaft 331 connected between the torque input end 31 and the torque output end 32, and an intermediate shaft bearing 332 matched with the intermediate transmission shaft 331 and fixed in the housing 10, and a first intermediate gear 333a and a second intermediate gear 333b fixed to the intermediate transmission shaft 331, the first intermediate gear 333a is meshed with the input gear 313, and the second intermediate gear 333b is meshed with the output gear 323. The outer diameter of the first intermediate gear 333a is greater than the outer diameter of the second intermediate gear 333b. The first intermediate gear 333a rotates synchronously with the second intermediate gear 333b. The intermediate shaft bearing 332 can be used to support the intermediate shaft so that the intermediate shaft can rotate stably. The input shaft 311 can drive the input gear 313 to rotate during the rotation process, and transmit the rotation torque to the first intermediate gear 333a through the input gear 313. The first intermediate gear 333a drives the intermediate transmission shaft 331 to rotate, and the intermediate transmission shaft 331 drives the second intermediate gear 333b to rotate. The second intermediate gear 333b transmits the rotational torque to the output gear 323, thereby driving the output shaft 321 to rotate. In this way, the torque can be transmitted to the propeller 50 through the reducer assembly 30 to achieve stable propulsion of the propeller 50. It can be understood that in this embodiment, the torque can be transmitted between the torque input end 31 and the torque output end 32 through only one intermediate transmission shaft 331. In other embodiments, multiple intermediate transmission shafts 331 can also be set to transmit torque, as long as the required torque can be output through the reducer assembly 30.

[0065] It can be understood that the transmission ratio of the input gear 313 to the first intermediate gear 333a is greater than 1, that is, the instantaneous rotation angle of the input gear 313 is much greater than the instantaneous rotation angle of the first intermediate gear 333a, and the instantaneous rotation angle of the first intermediate gear 333a is equal to the instantaneous rotation angle of the second intermediate gear 333b. The transmission ratio of the second intermediate gear 333b to the output gear 323 is less than 1, that is, the instantaneous rotation angle of the second intermediate gear 333b is much smaller than the instantaneous rotation angle of the output gear 323, thereby effectively meeting the output torque deceleration requirement of the motor 20.

[0066] like Figure 3 and Figure 4As shown, in some embodiments, the cooling lubricant pumped out by the pump assembly 40 flows through the intermediate transmission shaft 331. In this way, the cooling lubricant can cool or lubricate the intermediate transmission shaft 331 to ensure that the intermediate transmission shaft 331 can rotate stably. In this embodiment, the cooling lubricant pumped out by the pump assembly 40 can flow through part or all of the intermediate transmission shaft 331. For example, the cooling lubricant pumped out by the pump assembly 40 can flow through one end of the intermediate transmission shaft 331. It can be understood that the pump liquid outlet of the pump assembly 40 can be set close to one end of the intermediate transmission shaft 331, so that the cooling lubricant pumped out by the pump assembly 40 flows through the intermediate transmission shaft 331. The pump liquid outlet of the pump assembly 40 can be close to one end of the intermediate transmission shaft 331 through a pipeline or a housing flow channel, and this embodiment is not limited. Of course, the pump liquid outlet of the pump assembly 40 can also be close to both ends of the intermediate transmission shaft 331, or close to the position between the two ends of the intermediate transmission shaft 331, and this embodiment is not limited.

[0067] like Figure 3 and Figure 4 As shown, the cooling lubricant pumped out by the pump assembly 40 flows through the intermediate shaft bearing 332. It can be understood that the intermediate shaft bearings 332 are provided at both ends of the intermediate transmission shaft 331, that is, the two intermediate shaft bearings 332 can be cooled and lubricated by the cooling lubricant. Of course, it is also possible to set the cooling lubricant pumped out by the pump assembly 40 to cool and lubricate only one of the intermediate shaft bearings 332 as needed to increase the cooling and lubrication efficiency, while the other intermediate shaft bearing 332 can be contacted and cooled and lubricated by the cooling lubricant that is rotated and stirred in the second cavity 10b. In this way, the cooling lubricant can cool or lubricate the intermediate shaft bearing 332 to ensure that the intermediate shaft rotates stably relative to the intermediate shaft bearing 332. In this embodiment, the cooling lubricant pumped out by the pump assembly 40 can flow through one or more intermediate shaft bearings 332. For example, the cooling lubricant pumped out by the pump assembly 40 can flow through the intermediate shaft bearing 332 at one end of the intermediate shaft.

[0068] In some embodiments, the cooling lubricant pumped out by the pump assembly 40 flows through the first intermediate gear 333a and / or the second intermediate gear 333b. In this way, the cooling lubricant can cool or lubricate the first intermediate gear 333a and / or the second intermediate gear 333b to ensure that the intermediate gear 333 can stably transmit torque. In this embodiment, the cooling lubricant pumped out by the pump assembly 40 can flow through part or all of the first intermediate gear 333a and / or the second intermediate gear 333b. For example, the cooling lubricant pumped out by the pump assembly 40 can flow through the position where the first intermediate gear 333a and / or the second intermediate gear 333b meshes with other gears in the reducer assembly 30, for example, the position meshing with the input gear 313, or the position meshing with the output gear 323.

[0069] like Figure 2As shown, in some embodiments, the pump assembly 40 is connected to the input shaft 311 to pump liquid under the torque of the input shaft 311. The input shaft 311 has a large rotation speed and a small torque, so the pump assembly 40 can pump liquid under a large rotation speed and a small torque, so that a large amount of cooling and lubricating liquid can be quickly pumped to the reducer assembly 30, thereby achieving efficient cooling and lubrication effects on the reducer assembly 30.

[0070] like Figure 1 and Figure 2 As shown, in some embodiments, the pump assembly 40 is connected to the output shaft 321 to pump liquid under the torque of the output shaft 321. The input shaft 311 has a low speed and a large torque, so the pump assembly 40 can pump liquid under a relatively low speed and a relatively large torque, so that the cooling lubricating liquid can be pumped to the reducer assembly 30 under a relatively large thrust, thereby stably achieving cooling and lubricating effects on the reducer assembly 30. In addition, in this embodiment, the pump assembly 40 emits less noise, and the operating life of the pump assembly 40 can also be longer.

[0071] like Figure 3 and Figure 4 As shown, in some embodiments, the pump assembly 40 is connected to the intermediate transmission shaft 331 to pump liquid under the torque of the intermediate transmission shaft 331. The intermediate shaft has a moderate speed and a moderate torque, so the pump assembly 40 can pump liquid under a moderate speed and a moderate torque, so that a large amount of cooling lubricating liquid can be quickly pumped to the reducer assembly 30 under a large thrust, thereby achieving a stable and efficient cooling and lubrication effect on the reducer assembly 30. In addition, in this embodiment, the noise emitted by the pump assembly 40 will not be too loud, and the pump assembly 40 can also maintain a long service life.

[0072] like Figures 7 to 9 As shown, in some embodiments, 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 coupled to the motor shaft 21, the rotor assembly 401 is connected to 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 is at least configured to form a portion of the liquid inlet path, the liquid outlet channel 40b is at least configured to form a portion of the liquid outlet path, the pump housing 41 is disposed in the housing 10, and the rotor assembly 401 can pump the cooling lubricating liquid in the liquid inlet channel 40a to the liquid outlet channel 40b. Under the torque of the motor shaft 21, the rotor assembly 401 can pump the cooling lubricating liquid in the first cavity 10a along the liquid inlet path to the liquid outlet path, and the cooling lubricating liquid can flow to the reducer assembly 30 through the liquid outlet path to cool and lubricate the reducer assembly 30. Since the rotor assembly 401 is disposed in the pump housing 41 , when the pump assembly 40 is installed, the pump housing 41 can be directly installed in the second cavity 10 b . Such a structure is easy to install and compact.

[0073] It can be understood that the inlet channel 40a and the outlet channel 40b are structures on the pump housing 41, and the inlet channel 40a can form part or all of the inlet path, and the outlet channel 40b can form part or all of the outlet path. For example, the pump assembly 40 can directly pump the cooling lubricating liquid from the bottom of the first cavity 10a through the opening at one end of the inlet channel 40a, and the pump assembly 40 can also be connected to a pipeline through the inlet channel 40a to pump the cooling lubricating liquid from the bottom of the first cavity 10a; the pump assembly 40 can directly pump the cooling lubricating liquid to the reducer assembly 30 through the opening of the outlet channel 40b, and the pump assembly 40 can also pump the cooling lubricating liquid to the reducer assembly 30 through a pipeline.

[0074] like Figure 1 , Figure 2 , Figure 5 as well as Figure 6 As shown, in some embodiments, the pump housing 41 is disposed between the input shaft 311 and the output shaft 321. In this way, the pump housing 41 can be close to the input shaft 311 and the output shaft 321, so that the pump assembly 40 can pump cooling lubricating liquid to the shaft system position of the input shaft 311 and the shaft system position of the output shaft 321. And when the cooling lubricating liquid can be pumped to the shaft system position of the input shaft 311 or the shaft system position of the output shaft 321, cooling and lubrication can be achieved more efficiently.

[0075] like Figure 1 , Figure 2 , Figure 5 as well as Figure 6 As shown, in some embodiments, the pump housing 41 is disposed between the input shaft 311 and the output shaft 321, and the pump housing 41 is provided with a first bearing mounting groove 41a close to 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 structure can be used to mount the input shaft bearing 312 at one end of the input shaft 311. When the pump housing 41 is installed in the second cavity 10b, it can share the outer shell with the reducer assembly 30 installed in the second cavity 10b, so that the pump assembly 40 and the reducer assembly 30 can be installed in the second cavity 10b more reasonably and compactly, without taking up additional space. Exemplarily, the input shaft bearing 312 at the other end of the input shaft 311 is fixed in the mounting groove formed by the housing 10 to stably support the input shaft 311 and realize the stable rotation of the input shaft 311.

[0076] like Figure 2 , Figure 5 as well as Fig. 9As shown, in some embodiments, the pump housing 41 is disposed between the input shaft 311 and the output shaft 321, and the input shaft 311 passes through the pump housing 41 and is connected to the rotor assembly 401. In this way, the aforementioned pump assembly 40 can pump liquid through the torque of the input shaft 311. And the pump assembly 40 can also be reasonably and compactly arranged in the second cavity 10b where the reducer assembly 30 is installed, without occupying additional 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 input shaft 311 facing the pump housing 41 to achieve coaxial fixed connection.

[0077] like Figure 2 , Figure 8 as well as Fig. 9 As shown, in some embodiments, the pump housing 41 is provided with a first liquid outlet 40c, the first liquid outlet 40c is connected to the first bearing mounting groove 41a and the liquid outlet channel 40b, and the cooling lubricating liquid can flow along the first liquid outlet 40c to at least one of the end of the input shaft 311 matched with the first bearing mounting groove 41a and the input shaft bearing 312. The cooling lubricating liquid pumped to the liquid outlet channel 40b can flow along the first liquid outlet 40c to the torque input end 31 to cool or lubricate at least one of the end of the input shaft 311 matched with the first bearing mounting groove 41a and the input shaft bearing 312.

[0078] like Figure 1 , Figure 2 , Figure 5 as well as Figure 6 As shown, in some embodiments, the pump housing 41 is arranged between the input shaft 311 and the output shaft 321, and the pump housing 41 is provided with a second bearing mounting groove 41b close to the torque output end 32, and the output shaft bearing 322 is fixed to the second bearing mounting groove 41b. The second bearing mounting groove 41b formed by the pump housing 41 structure can be used to mount the output shaft bearing 322 at one end of the output end. When the pump housing 41 is installed in the second cavity 10b, it can share the outer shell with the reducer assembly 30 installed in the second cavity 10b, so that the pump assembly 40 and the reducer assembly 30 can be more reasonably and compactly installed in the second cavity 10b without taking up additional space. Exemplarily, the output shaft bearing 322 at the other end of the output shaft 321 is fixed in the mounting groove formed by the housing 10 to stably support the output shaft 321 and realize the stable rotation of the output shaft 321.

[0079] like Figure 1 , Figure 2 , Figure 5 as well as Figure 6As shown, in some embodiments, the pump housing 41 is disposed between the input shaft 311 and the output shaft 321, and the output shaft 321 passes through the pump housing 41 and is connected to the rotor assembly 401. In this way, the aforementioned pump assembly 40 can pump liquid through the torque of the output shaft 321. And the pump assembly 40 can also be reasonably and compactly arranged in the second cavity 10b where the reducer assembly 30 is installed, without occupying additional 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 facing the pump housing 41 to achieve coaxial fixed connection.

[0080] like Figure 2 , Figure 7 as well as Fig. 9 As shown, in some embodiments, the pump housing 41 is provided with a second liquid outlet 40d, and the second liquid outlet 40d is connected to the second bearing mounting groove 41b and the liquid outlet channel 40b, and the cooling lubricating liquid can flow along the second liquid outlet 40d to at least one of the end of the output shaft 321 matched with the second bearing mounting groove 41b and the output shaft bearing 322. The cooling lubricating liquid pumped to the liquid outlet channel 40b can flow along the second liquid outlet 40d to the torque output end 32 to cool or lubricate at least one of the end of the output shaft 321 matched with the second bearing mounting groove 41b and the output shaft bearing 322.

[0081] It is understandable that if Figure 2 , Figure 7 as well as Figure 8 As shown, in this embodiment, when the pump housing 41 is disposed between the input shaft 311 and the output shaft 321, the first bearing mounting groove 41a and the second bearing mounting groove 41b can be respectively disposed on both sides of the pump housing 41, so that both sides of the pump assembly 40 can share the housing with the reducer assembly 30, thereby enabling the pump assembly 40 and the reducer assembly 30 to be more reasonably and compactly installed in the second cavity 10b without occupying additional space. Of course, as required, the first bearing mounting groove 41a and the second bearing mounting groove 41b can also be selectively disposed on either side of the pump housing 41.

[0082] It is understandable that if Figure 2 , Figure 7 as well as Figure 8 As shown, in this embodiment, when the pump housing 41 is arranged between the input shaft 311 and the output shaft 321, the first bearing mounting groove 41a and the second bearing mounting groove 41b can be respectively provided on both sides of the pump housing 41, and the first liquid outlet hole 40c and the second liquid outlet hole can be respectively provided on both sides of the pump housing 41, so that when the cooling lubricating liquid is pumped to the liquid outlet channel 40b, it can cool or lubricate the end of the input shaft 311 matched with the first bearing mounting groove 41a and at least one of the input shaft bearing 312, and cool or lubricate the end of the output shaft 321 matched with the second bearing mounting groove 41b and at least one of the output shaft bearing 322.

[0083] like Figure 2 as well as Figures 7 to 9 As shown, in some embodiments, the pump housing 41 is disposed between the input shaft 311 and the output shaft 321, and the pump assembly 40 further includes a liquid guide tube 47 fixed to the pump housing 41, the liquid guide tube 47 is docked with the liquid outlet channel 40b, and is provided with a liquid spray port away from the pump housing 41, and the liquid spray port is used to spray cooling lubricating liquid to the position of the reducer away from the pump housing 41. It can be understood that the liquid guide tube 47 can be understood as a part of the liquid outlet path. The cooling lubricating liquid can be pumped to the liquid spray port through the liquid guide tube 47, so as to spray cooling lubricating liquid to the position of the reducer away from the pump housing 41, thereby cooling and lubricating the position of the reducer away from the pump housing 41.

[0084] like Figure 2 as well as Figures 7 to 9 As shown, for example, the liquid guide tube 47 can be combined with the aforementioned first liquid outlet and / or second liquid outlet. In this way, the pump assembly 40 can cool and lubricate the reducer assembly 30 near the pump housing 41, and can also cool and lubricate the reducer assembly 30 far from the pump housing 41. Therefore, the reducer assembly 30 can be fully cooled and lubricated to ensure the stable operation of the reducer assembly 30.

[0085] like Figure 2 as well as Figures 7 to 9 As shown, in some embodiments, the pump housing 41 is disposed between the input shaft 311 and the output shaft 321, and the liquid guide tube 47 is provided with a first liquid spray port 471, and the first liquid spray port 471 is close to the end of the input shaft 311 away from the pump housing 41, so as to spray cooling lubricating liquid to the end of the input shaft 311 and the corresponding input shaft bearing 312. The cooling lubricating liquid can be sprayed from the first liquid spray port 471 along the liquid guide tube 47 to cool or lubricate at least one of the end of the input shaft 311 away from the pump housing 41 and the corresponding input shaft bearing 312. When combined with the aforementioned first liquid outlet, comprehensive cooling and lubrication of the shaft system position of the input shaft 311 can be achieved.

[0086] like Figure 2 as well as Figures 7 to 9 As shown, in some embodiments, the pump housing 41 is disposed between the input shaft 311 and the output shaft 321, and the liquid guide tube 47 is provided with a second liquid spray port 472, and the second liquid spray port 472 is close to the end of the output shaft 321 away from the input shaft 311, so as to spray cooling lubricating liquid to the end of the output shaft 321 and the corresponding output shaft bearing 322. The cooling lubricating liquid can be sprayed from the second liquid spray port 472 along the liquid guide tube 47 to cool or lubricate at least one of the end of the output shaft 321 away from the pump housing 41 and the corresponding output shaft bearing 322. When combined with the aforementioned second liquid outlet, comprehensive cooling and lubrication of the shaft system position of the output shaft 321 can be achieved.

[0087] It is understandable that the liquid conduit 47 can be provided with both the first liquid spray port 471 and the second liquid spray port 472 to simultaneously cool and lubricate the shaft system position of the input shaft 311 and the shaft system position of the output shaft 321. Of course, as required, the liquid conduit 47 can also selectively be provided with either the first liquid spray port 471 or the second liquid spray port 472.

[0088] like Figure 2 as well as Figures 7 to 9 As shown, in some embodiments, the pump housing 41 is disposed 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, and the third liquid spray port 473 is close to between the torque input end 31 and the torque output end 32 to spray cooling lubricating liquid between the torque input end 31 and the torque output end 32. The cooling lubricating liquid can be sprayed from the third liquid spray port 473 along the liquid guide tube 47 to cool or lubricate the portion of the reducer assembly 30 located between the torque input end 31 and the torque output end 32.

[0089] like Figure 3 and Figure 7 As shown, in other embodiments, the pump housing 41 is disposed between the input shaft 311 and the intermediate transmission shaft 331. In this way, the pump housing 41 can be close to the input shaft 311 and the intermediate transmission shaft 331, so that the pump assembly 40 can pump cooling lubricating liquid to the shaft system position of the input shaft 311 and the shaft system position of the intermediate transmission shaft 331. And when the cooling lubricating liquid can be pumped to the shaft system position of the input shaft 311 or the shaft system position of the intermediate transmission shaft 331, cooling and lubrication can be achieved more efficiently.

[0090] like Figure 3 and Figure 7 As shown, in some embodiments, the pump housing 41 is arranged between the input shaft 311 and the intermediate transmission shaft 331, and the pump housing 41 is provided with a third bearing installation groove 41c close to the intermediate transmission shaft 331, and the intermediate shaft bearing 332 close to the torque input end 31 is fixed in the third bearing installation groove 41c. The third bearing installation groove 41c formed by the pump housing 41 structure can install and fix the intermediate shaft bearing 332 at one end of the intermediate transmission shaft 331. When the pump housing 41 is installed in the second cavity 10b, it can share the outer shell with the reducer assembly 30 installed in the second cavity 10b, so that the pump assembly 40 and the reducer assembly 30 can be installed in the second cavity 10b more reasonably and compactly, without occupying additional space. Exemplarily, the intermediate shaft bearing 332 at the other end of the intermediate transmission shaft 331 is fixed in the installation groove formed by the housing 10 to stably support the input shaft 311 and realize the stable rotation of the intermediate shaft bearing 332.

[0091] like Figure 3 and Figure 7As shown, in some embodiments, the pump housing 41 is arranged between the input shaft 311 and the intermediate transmission shaft 331, and the pump housing 41 is also provided with a fifth bearing installation groove 41d close to the input shaft 311, and the input shaft bearing 312 on the side away from the output shaft 321 is fixed to the fifth bearing installation groove 41d. The fifth bearing installation groove 41d formed by the pump housing 41 structure can be installed to fix the input shaft 311 bearing at one end of the input shaft 311. When the pump housing 41 is installed in the second cavity 10b, it can share the housing with the reducer assembly 30 installed in the second cavity 10b, so that the pump assembly 40 and the reducer assembly 30 can be installed in the second cavity 10b more reasonably and compactly, without taking up extra space. Exemplarily, the input shaft 311 bearing at the other end of the input shaft 311 is fixed in the installation groove formed by the housing 10 to stably support the input shaft 311 and realize the stable rotation of the input shaft 311.

[0092] like Figure 3 and Figure 7 as well as Fig. 9 As shown, in some embodiments, the pump housing 41 is disposed between the input shaft 311 and the intermediate transmission shaft 331, and one end of the intermediate transmission shaft 331 close to the input shaft 311 penetrates the pump housing 41 and is connected to the rotor assembly 401. In this way, the aforementioned pump assembly 40 can pump liquid through the torque action of the intermediate transmission shaft 331. And the pump assembly 40 can also be reasonably and compactly arranged in the second cavity 10b where the reducer assembly 30 is installed, without occupying additional 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 intermediate transmission shaft 331 facing the pump housing 41 to achieve coaxial fixed connection.

[0093] like Figure 3 and Figure 7 as well as Fig. 9 As shown, in some embodiments, the pump housing 41 is disposed between the input shaft 311 and the intermediate transmission shaft 331, and the pump housing 41 is provided with a third liquid outlet, which is connected to the third bearing mounting groove 41c and the liquid outlet channel 40b, and the cooling lubricating liquid can flow along the third liquid outlet to at least one of the end of the intermediate transmission shaft 331 matched with the third bearing mounting groove 41c and the intermediate shaft bearing 332. The cooling lubricating liquid pumped to the liquid outlet channel 40b can flow along the third liquid outlet to the shaft system position of the intermediate transmission shaft 331 to cool or lubricate at least one of the end of the intermediate transmission shaft 331 matched with the third bearing mounting groove 41c and the intermediate shaft bearing 332.

[0094] like Figure 3 and Figure 7 as well as Fig. 9As shown, in some embodiments, the pump housing 41 is disposed between the input shaft 311 and the intermediate transmission shaft 331, and the pump assembly 40 further includes a liquid guide tube 47 fixed to the pump housing 41, the liquid guide tube 47 is docked with the liquid outlet channel 40b, and can spray cooling lubricating liquid to the end of the intermediate transmission shaft 331 away from the pump housing 41 through the liquid spray port. Combined with the third liquid outlet hole, the shaft position of the intermediate transmission shaft 331 can be fully cooled and lubricated. In addition, when the shaft position of the intermediate transmission shaft 331 is located above the torque input end 31 and the torque output end 32, the cooling lubricating liquid flowing to the two ends of the intermediate transmission shaft 331 can also flow to the torque input end 31 and the torque output end 32 at the same time, so that the reducer assembly 30 can be fully cooled and lubricated to ensure the stable operation of the reducer assembly 30.

[0095] like Figure 4 and Figure 7 As shown, in some other embodiments, the pump housing 41 is disposed between the output shaft 321 and the intermediate transmission shaft 331. In this way, the pump housing 41 can be close to the output shaft 321 and the intermediate transmission shaft 331, so that the pump assembly 40 can pump cooling lubricating liquid to the shaft system position of the output shaft 321 and the shaft system position of the intermediate transmission shaft 331. And when the cooling lubricating liquid can be pumped to the shaft system position of the output shaft 321 or the shaft system position of the intermediate transmission shaft 331, cooling and lubrication can be achieved more efficiently.

[0096] like Figure 4 and Figure 7 As shown, in some embodiments, the pump housing 41 is arranged between the output shaft 321 and the intermediate transmission shaft 331, and the pump housing 41 is provided with a fourth bearing installation groove 41e close to the intermediate transmission shaft 331, and the intermediate shaft bearing 332 close to the torque output end 32 is fixed in the fourth bearing installation groove 41e. The fourth bearing installation groove 41e formed by the pump housing 41 structure can be installed and fixed with the intermediate shaft bearing 332 at one end of the intermediate transmission shaft 331. When the pump housing 41 is installed in the second cavity 10b, it can share the outer shell with the reducer assembly 30 installed in the second cavity 10b, so that the pump assembly 40 and the reducer assembly 30 can be installed in the second cavity 10b more reasonably and compactly, without occupying additional space. Exemplarily, the intermediate shaft bearing 332 at the other end of the intermediate transmission shaft 331 is fixed in the installation groove formed by the housing 10 to stably support the input shaft 311 and realize the stable rotation of the intermediate shaft bearing 332.

[0097] like Figure 4 and Figure 7As shown, in some embodiments, the pump housing 41 is arranged between the output shaft 321 and the intermediate transmission shaft 331, and the pump housing 41 is also provided with a sixth bearing installation groove 41f close to the output shaft 321, and the output shaft bearing 322 on the side away from the input shaft 311 is fixed to the sixth bearing installation groove 41f. The sixth bearing installation groove 41f formed by the pump housing 41 structure can be installed to fix the output shaft 321 bearing at one end of the output shaft 321. When the pump housing 41 is installed in the second cavity 10b, it can share the housing with the reducer assembly 30 installed in the second cavity 10b, so that the pump assembly 40 and the reducer assembly 30 can be installed in the second cavity 10b more reasonably and compactly, without taking up extra space. Exemplarily, the output shaft 321 bearing at the other end of the output shaft 321 is fixed in the installation groove formed by the housing 10 to stably support the output shaft 321 and realize the stable rotation of the output shaft 321.

[0098] like Figure 4 and Figure 7 as well as Fig. 9 As shown, in some embodiments, the pump housing 41 is arranged between the output shaft 321 and the intermediate transmission shaft 331, and one end of the intermediate transmission shaft 331 close to the output shaft 321 penetrates the pump housing 41 and is connected to the rotor assembly 401. In this way, the aforementioned pump assembly 40 can pump liquid through the torque action of the intermediate transmission shaft 331. And the pump assembly 40 can also be reasonably and compactly arranged in the second cavity 10b where the reducer assembly 30 is installed, without occupying additional 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 intermediate transmission shaft 331 facing the pump housing 41 to achieve coaxial fixed connection.

[0099] like Figure 4 and Figure 7 as well as Fig. 9 As shown, in some embodiments, the pump housing 41 is disposed between the output shaft 321 and the intermediate transmission shaft 331, and the pump housing 41 is provided with a fourth liquid outlet, which is connected to the third bearing mounting groove 41c and the liquid outlet channel 40b, and the cooling lubricating liquid can flow along the fourth liquid outlet to at least one of the end of the intermediate transmission shaft 331 matched with the third bearing mounting groove 41c and the intermediate shaft bearing 332. The cooling lubricating liquid pumped to the liquid outlet channel 40b can flow along the fourth liquid outlet to the shaft system position of the intermediate transmission shaft 331 to cool or lubricate at least one of the end of the intermediate transmission shaft 331 matched with the third bearing mounting groove 41c and the intermediate shaft bearing 332.

[0100] like Figure 4 and Figure 7 as well as Fig. 9As shown, in some embodiments, the pump housing 41 is disposed between the output shaft 321 and the intermediate transmission shaft 331, and the pump assembly 40 further includes a liquid guide tube 47 fixed to the pump housing 41, the liquid guide tube 47 is docked with the liquid outlet channel 40b, and can spray cooling lubricating liquid to the end of the intermediate transmission shaft 331 away from the pump housing 41 through the liquid spray port. Combined with the fourth liquid outlet hole, the shaft position of the intermediate transmission shaft 331 can be fully cooled and lubricated. In addition, when the shaft position of the intermediate transmission shaft 331 is located above the torque input end 31 and the torque output end 32, the cooling lubricating liquid flowing to both ends of the intermediate transmission shaft 331 can also flow to the torque input end 31 and the torque output end 32 at the same time, so that the reducer assembly 30 can be fully cooled and lubricated to ensure the stable operation of the reducer assembly 30.

[0101] like Figures 1 to 4 As shown, in some embodiments, the pump assembly 40 can pump liquid under the forward torque or reverse torque of the motor shaft 21. It can be understood that when the motor shaft 21 rotates forward or reversely, it will drive the propeller 50 to rotate in different directions. Regardless of whether the motor shaft 21 rotates forward or reversely, it can pump liquid, that is, as long as the motor 20 is running, it can pump liquid. In any operating state of the electric propeller 100, it can ensure that the pump assembly 40 stably pumps liquid, and realizes cooling and lubrication of the reducer under any circumstances.

[0102] like Figure 1 as well as Figures 7 to 9 As shown, 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 coupled to the motor shaft 21, 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 the cooling lubricating liquid is pumped from the liquid inlet channel 40a to the liquid outlet channel 40b through the gap between the eccentric hole and the first rotor 43. When the motor 20 is running, the first rotor shaft 42 is driven to rotate under the action of the torque of the motor shaft 21, and then the first rotor 43 is driven to rotate. Since the first rotor 43 and the eccentric hole are eccentrically matched, when the first rotor 43 rotates eccentrically relative to the eccentric hole, the cooling lubricating liquid is continuously pumped from the gap between the eccentric hole and the first rotor 43 from the liquid inlet channel 40a to the liquid outlet channel 40b, thereby completing the pumping. The structure is simple and efficient.

[0103] like Figures 7 to 9As shown, in addition, the rotor assembly 401 further includes a rotor stop ring 45, which is sleeved on the outer peripheral side of the second rotor 44 to limit the offset position of the second rotor 44 relative to the first rotor 43. After limiting the offset position of the second rotor 44, the first rotor 43 can stably rotate eccentrically at the eccentric hole at a specific position to complete the pumping of liquid. It can be understood that the offset position of the second rotor 44 needs to ensure that the eccentric hole is connected to the liquid inlet channel 40a and the liquid outlet channel 40b, so as to ensure the stable pumping of liquid by the first rotor 43.

[0104] like Figure 1 as well as Figures 7 to 9 As shown, in some embodiments, the liquid outlet path is provided with at least one forward liquid outlet channel 40b and at least one reverse liquid outlet channel 40b, and both the forward liquid outlet channel 40b and the reverse liquid outlet channel 40b are connected to the rotor assembly 401. When the motor 20 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 motor 20 rotates reversely, the liquid outlet rate of the reverse liquid outlet channel 40b is greater than the liquid outlet rate of the forward liquid outlet channel 40b. When the motor 20 rotates forward, the forward liquid outlet channel 40b can stably discharge liquid, and when the motor 20 rotates reversely, the reverse liquid outlet channel 40b can stably discharge liquid, so as to ensure that the motor 20 can stably pump liquid in both forward and reverse rotations. For example, when the motor 20 rotates forward, the rotor limit ring 45 can bias the second rotor 44 so that the liquid output rate of the forward rotation liquid outlet channel 40b is greater than the liquid output rate of the reverse rotation liquid outlet channel 40b; when the motor 20 rotates reversely, the rotor limit ring 45 can bias the second rotor 44 so that the liquid output rate of the reverse rotation liquid outlet channel 40b is greater than the liquid output rate of the forward rotation liquid outlet channel 40b.

[0105] like Figures 7 to 9 As shown, illustratively, the pump assembly 40 is provided with a blocking member 46, and the rotor limiting ring 45 is coaxially rotated with the second rotor 44, and the blocking member 46 is used to position the rotational position of the rotor limiting ring 45, so as to position the offset direction of the second rotor 44 relative to the first rotor 43. It can be understood that when the first rotor 43 rotates, the first rotor 43 will contact the second rotor 44, and will also drive the second rotor 44 to rotate in the same direction. Since the rotor limiting ring 45 is coaxially rotated with the second rotor 44, it will also drive the rotor limiting ring 45 to rotate. After the rotor limiting ring 45 rotates, the blocking member 46 positions the rotational position of the rotor limiting ring 45, and then the offset direction of the second rotor 44 can be positioned.

[0106] For example, Figure 1 as well as Figures 7 to 9As shown, when the motor 20 rotates forward, the rotor limiting ring 45 rotates to the first position and contacts the blocking member 46, and the gap between the second rotor 44 and the first rotor 43 is offset and connected to the forward liquid outlet channel 40b; when the motor 20 rotates reversely, the rotor limiting ring 45 rotates to the second position and contacts the blocking member 46, and the gap between the second rotor 44 and the first rotor 43 is offset and connected to the reverse liquid outlet channel 40b. In this way, when the motor 20 rotates forward and reversely, the rotor limiting ring 45 can be positioned at different positions through the blocking member 46, and then the second rotor 44 is offset at different positions, and the first rotor 43 completes pumping liquid at different positions when the motor 20 rotates forward and reversely.

[0107] like Figure 1 as well as Figures 7 to 9 As shown, exemplarily, the rotor limiting ring 45 is provided with a matching boss 451, one side of the matching boss 451 forms a first blocking portion, and the other side of the matching boss 451 forms a second blocking portion. When the motor 20 rotates forward, the rotor limiting ring 45 rotates forward, and the first blocking portion abuts against the blocking member 46; when the motor 20 rotates reversely, the rotor limiting ring 45 rotates reversely, and the second blocking portion abuts against the blocking member 46. When the motor 20 rotates forward, the rotor limiting ring 45 rotates to the first position, and the first blocking portion abuts against the blocking member 46 to position the rotor limiting ring 45. When the motor 20 rotates reversely, the rotor limiting ring 45 rotates to the second position, and the second blocking portion abuts against the blocking member 46 to position the rotor limiting ring 45.

[0108] In some other embodiments, one liquid outlet channel 40b is provided, and when the motor 20 rotates forward or reversely, the cooling lubricating liquid in the liquid inlet channel 40a is pumped to the liquid outlet channel 40b. Such a structure is simple and can ensure stable liquid discharge. For example, the position of the aforementioned rotor limiting ring 45 can be fixed to ensure that the first rotor 43 can stably pump liquid regardless of whether it rotates forward or reversely.

[0109] like Figures 7 to 9 As shown, in some embodiments, the pump housing 41 includes a second housing 412 and a first housing 411 connected to each other, 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, the installation of the pump assembly 40 is achieved.

[0110] Exemplarily, the blocking member 46 is disposed on the first housing 411 to limit the rotor limiting ring 45 .

[0111] Exemplarily, 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 facing the pump housing 41 .

[0112] For example, Figures 6 to 9As shown, the second shell 412 is provided with a second bearing mounting groove 41b and a second liquid outlet 40d, and the other side of the second shell 412 and the first shell 411 are surrounded by a first bearing mounting groove 41a, and the first shell 411 is provided with a first liquid outlet 40c, so that when the cooling lubricating liquid is pumped to the liquid outlet channel 40b, it can cool or lubricate the end of the input shaft 311 and the input shaft bearing 312 that match the first bearing mounting groove 41a, and cool or lubricate at least one of the end of the output shaft 321 and the output shaft bearing 322 that match the second bearing mounting groove 41b.

[0113] like Figure 1 and Figure 6 As shown, in some embodiments, the pump housing 41 is fixedly connected to the housing 10. In this way, the pump assembly 40 is fixed in the second cavity 10b to ensure stable pumping of liquid.

[0114] like Figures 7 to 9 As shown, in some embodiments, a filter 48 is further included, and the filter 48 is arranged in the liquid inlet path to filter the cooling lubricating liquid entering the liquid inlet path. The cooling lubricating liquid sucked by the power pump system can be filtered by the filter 48 to prevent impurities from entering the pump cycle and affecting the cooling and lubricating effect of the reducer assembly 30.

[0115] Exemplarily, the filter 48 is provided with a magnetic member 481 for absorbing magnetically absorbable impurities in the cooling lubricating fluid. In this way, the magnetically absorbable impurities can be further prevented from entering the circulation. For example, the magnetic member is disposed adjacent to the outer wall of the filter 48, and when the cooling lubricating fluid enters the filter 48, the magnetically absorbable impurities in the cooling lubricating fluid can be absorbed.

[0116] Exemplarily, the filter 48 is an oil suction filter, which can prevent the suction of pollutants and impurities, ensure the cleanliness of the power pump system, and ensure the stable circulation of the cooling lubricant.

[0117] Exemplarily, the filter 48 is a pressure filter. The pressure filter can achieve different filtering effects according to the different filter media filled. For example, when filled with activated carbon, it can adsorb pigments, organic matter, residual chlorine, colloids, etc. in the cooling lubricating fluid to ensure stable circulation of the cooling lubricating fluid.

[0118] like Figures 7 to 9 As shown, in some embodiments, the filter 48 is detachably disposed in the liquid inlet path. In this way, the filter 48 can be removed as needed to facilitate replacement of a new filter 48 or cleaning the filter 48 to effectively filter the cooling lubricant entering the circulation. Exemplarily, the filter 48 is a plate filter 48, and the filter 48 can be fixed to the liquid inlet of the liquid inlet channel 40a by screws to complete the installation, and the aforementioned magnetic attraction member 481 can be fixed to the filter 48 by screws.

[0119] In other embodiments, the filter 48 is non-detachably disposed in the liquid inlet path. In this way, it is ensured that the power pump system can stably pump liquid, and the cooling lubricating liquid entering the liquid inlet path will pass through the filter 48 to achieve effective filtration of the cooling lubricating liquid. Exemplarily, a portion of the liquid inlet path can be detachably connected to the pump assembly 40, and the portion of the liquid inlet path can be directly removed to facilitate replacement or cleaning of the filter 48.

[0120] like Figures 1 to 4 as well as Fig.10 As shown, the embodiment of the present application further provides a movable device 1000 in a water area, including a water area carrier 200 and the electric propeller 100 mentioned above, and the electric propeller 100 is connected to the water area carrier 200. The electric propeller 100 can be connected to the water area carrier 200 via the housing 10, or via a clamp connected to the housing 10, or via a support assembly connected to the housing, so that the electric propeller 100 is installed on the water area carrier 200.

[0121] In the movable device 1000 for water area provided in the embodiment of the present application, the electric propeller 100 can propel the water area carrier 200 to move, so as to realize the movement of the movable device 1000 for water area on the water area. In the electric propeller 100, the cooling lubricating liquid in the first cavity 10a can be heat exchanged with the water outside the shell 10 through the shell 10, so as to cool the cooling lubricating liquid. Since the pump assembly 40 is located in the second cavity 10b, the pump assembly 40 can complete the pumping of liquid under the torque of the motor shaft 21, and pump the cooling lubricating liquid to contact the reducer assembly 30, so as to realize cooling and lubrication of the reducer assembly 30. Without the need for additional power structure and space, stable cooling and lubrication of the reducer assembly 30 can be realized. The movable device 1000 for water area provided in the present application can realize cooling and lubrication effect on the reducer assembly 30, increase the service life of the reducer assembly 30, and reduce the failure rate of the electric propeller 100.

[0122] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the application concept of the present application, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present application.

Claims

1. An electric propeller, characterized in that: include: A shell, comprising a first cavity and a second cavity isolated from the first cavity, wherein the second cavity is used to contain a cooling lubricating liquid, and the cooling lubricating liquid can exchange heat with water outside the shell through the shell; A motor is disposed in the first cavity, and the motor is provided with a motor shaft; A reducer assembly, disposed in the second cavity and coupled to the motor shaft; A pump assembly is disposed in the second cavity, the pump assembly is coupled to the motor shaft to pump liquid under the torque of the motor shaft, the cooling lubricating liquid can be pumped away from the bottom of the second cavity under the pumping of the pump assembly, and return to the bottom of the second cavity after contacting at least part of the reducer assembly; A propeller is located outside the housing and is connected to the reducer assembly shaft.

2. The electric propeller according to claim 1, characterized in that: The reducer assembly is provided with a torque input end and a torque output end, wherein the torque input end receives the torque of the motor, and the torque output end outputs the torque to the propeller, and the pump assembly is arranged at the torque input end or the torque output end, or at a portion between the torque input end and the torque output end.

3. The electric propeller according to claim 2, characterized in that: The torque input end is provided with an input shaft capable of receiving the motor torque, an input shaft bearing matched with the input shaft and fixed in the housing, and an input gear fixed to the input shaft; the torque output end is provided with an output shaft capable of outputting torque to the propeller, an output shaft bearing matched with the output shaft and fixed in the housing, and an output gear fixed to the output shaft, and the output gear receives the rotational torque from the input gear.

4. The electric propeller according to claim 3, characterized in that: The cooling lubricating fluid pumped out by the pump assembly flows through the input shaft.

5. The electric propeller according to claim 3, characterized in that: The cooling lubricating fluid pumped out by the pump assembly flows through the input shaft bearing.

6. The electric propeller according to claim 3, characterized in that: The cooling lubricating fluid pumped out by the pump assembly flows through the input gear.

7. The electric propeller according to claim 3, characterized in that: The cooling lubricating fluid pumped out by the pump assembly flows through the output shaft.

8. The electric propeller according to claim 3, characterized in that: The cooling lubricating fluid pumped out by the pump assembly flows through the output shaft bearing.

9. The electric propeller according to claim 3, characterized in that: The cooling lubricating fluid pumped out by the pump assembly flows through the output gear.

10. The electric propulsion device according to claim 3, characterized in that: The reducer assembly is also provided with an intermediate transmission shaft connected between the torque input end and the torque output end, an intermediate shaft bearing cooperating with the intermediate transmission shaft and fixed in the housing, and a first intermediate gear and a second intermediate gear fixed to the intermediate transmission shaft, the first intermediate gear meshing with the input gear, and the second intermediate gear meshing with the output gear.

11. The electric propulsion device according to claim 10, characterized in that: The cooling lubricating fluid pumped out by the pump assembly flows through the intermediate transmission shaft.

12. The electric propulsion device according to claim 10, characterized in that: The cooling lubricating fluid pumped out by the pump assembly flows through the intermediate shaft bearing.

13. The electric propulsion device according to claim 10, characterized in that: The cooling lubricating fluid pumped out by the pump assembly flows through the first intermediate gear and / or the second intermediate gear.

14. The electric propulsion device according to claim 3, characterized in that: The pump assembly is connected to the input shaft to pump fluid under the torque of the input shaft.

15. The electric propulsion device according to claim 3, characterized in that: The pump assembly is connected to the output shaft to pump fluid under the torque of the output shaft.

16. The electric propulsion device according to claim 10, characterized in that: The pump assembly is connected to the intermediate transmission shaft to pump fluid under the torque of the intermediate transmission shaft.

17. The electric propulsion device according to claim 10, characterized in that: The pump assembly includes a pump housing, a rotor assembly arranged in the pump housing, a liquid inlet path and a liquid outlet path, the rotor assembly is coupled to the motor shaft, the rotor assembly is connected to the liquid inlet path and the liquid outlet path, the pump housing is provided with a liquid inlet channel and a liquid outlet channel, the liquid inlet channel is at least configured to form a portion of the liquid inlet path, the liquid outlet channel is at least configured to form a portion of the liquid outlet path, the pump housing is arranged in the casing, and the rotor assembly can pump the cooling lubricating liquid in the liquid inlet channel to the liquid outlet channel.

18. The electric propulsion device according to claim 17, characterized in that: The pump housing is disposed between the input shaft and the output shaft.

19. The electric propulsion device according to claim 18, characterized in that: The pump housing is provided with a first bearing mounting groove close to the torque input end, and the input shaft bearing is fixed in the first bearing mounting groove.

20. The electric propulsion device according to claim 19, characterized in that: The input shaft passes through the pump housing and is connected to the rotor assembly.

21. The electric propulsion device according to claim 19, characterized in that: The pump housing is provided with a first liquid outlet hole, which is connected to the first bearing mounting groove and the liquid outlet channel, and the cooling lubricating liquid can flow along the first liquid outlet hole to at least one of the end of the input shaft matched with the first bearing mounting groove and the input shaft bearing.

22. The electric propulsion device according to claim 18, characterized in that: The pump housing is provided with a second bearing mounting groove close to the torque output end, and the output shaft bearing is fixed in the second bearing mounting groove.

23. The electric propulsion device according to claim 22, characterized in that: The output shaft passes through the pump housing and is connected to the rotor assembly.

24. The electric propulsion device according to claim 22, characterized in that: The pump housing is provided with a second liquid outlet hole, which is connected to the second bearing mounting groove and the liquid outlet channel, and the cooling lubricating liquid can flow along the second liquid outlet hole to at least one of the end of the output shaft and the output shaft bearing that cooperates with the second bearing mounting groove.

25. The electric propulsion device according to claim 18, characterized in that The pump assembly also includes a liquid guide tube fixed to the pump housing, the liquid guide tube is connected to the liquid outlet channel, and is provided with a liquid spray port away from the pump housing, and the liquid spray port is used to spray the cooling lubricating liquid to a position of the reducer assembly away from the pump housing.

26. The electric propulsion device according to claim 25, characterized in that The liquid guide pipe is provided with a first liquid spray port, which is close to the end of the input shaft away from the pump housing, so as to spray the cooling lubricating liquid to the end of the input shaft and the corresponding matching input shaft bearing.

27. The electric propulsion device according to claim 25, characterized in that The liquid guide pipe is provided with a second liquid spray port, and the second liquid spray port is close to the end of the output shaft away from the pump housing, so as to spray the cooling lubricating liquid to the end of the output shaft and the corresponding output shaft bearing.

28. The electric propulsion device according to claim 17, characterized in that: The pump housing is arranged between the input shaft and the intermediate transmission shaft.

29. The electric propulsion device according to claim 28, characterized in that The pump housing is provided with a third bearing installation groove close to the intermediate transmission shaft, and the intermediate shaft bearing close to the torque input end is fixed in the third bearing installation groove.

30. The electric propulsion device according to claim 29, characterized in that One end of the intermediate transmission shaft close to the input shaft penetrates into the pump housing and is connected to the rotor assembly.

31. The electric propulsion device according to claim 17, characterized in that: The pump housing is arranged between the output shaft and the intermediate transmission shaft.

32. The electric propulsion device according to claim 31, characterized in that The pump housing is provided with a fourth bearing mounting groove close to the intermediate transmission shaft, and the intermediate shaft bearing close to the torque output end is fixed in the fourth bearing mounting groove.

33. The electric propulsion device according to claim 32, characterized in that One end of the intermediate transmission shaft close to the output shaft penetrates into the pump housing and is connected to the rotor assembly.

34. The electric propulsion device according to claim 1, characterized in that: The pump assembly can pump liquid under either the forward torque or the reverse torque of the motor shaft.

35. The electric propulsion device according to claim 17, characterized in that: The rotor assembly includes a first rotor shaft, a first rotor and a second rotor. The first rotor shaft is coupled to the motor shaft. The first rotor is concentrically connected to the first rotor shaft. An eccentric hole is provided in the second rotor. The first rotor is eccentrically matched with the eccentric hole. The cooling lubricating liquid is pumped from the liquid inlet channel to the liquid outlet channel through the gap between the eccentric hole and the first rotor.

36. The electric propulsion device according to claim 35, characterized in that The rotor assembly further includes a rotor limiting ring, which is sleeved on the outer circumference of the second rotor to limit the offset position of the second rotor relative to the first rotor.

37. The electric propulsion device according to claim 36, characterized in that The liquid outlet path is provided with at least one forward liquid outlet channel and at least one reverse liquid outlet channel, and both the forward liquid outlet channel and the reverse liquid outlet channel are connected to the rotor assembly. When the motor rotates forward, the liquid outlet rate of the forward liquid outlet channel is greater than the liquid outlet rate of the reverse liquid outlet channel. When the motor rotates reversely, the liquid outlet rate of the reverse liquid outlet channel is greater than the liquid outlet rate of the forward liquid outlet channel.

38. The electric propulsion device according to claim 37, characterized in that The pump assembly is provided with a blocking member, the rotor limiting ring is coaxially rotated with the second rotor, and the blocking member is used to locate the rotational position of the rotor limiting ring to locate the offset direction of the second rotor relative to the first rotor.

39. The electric propulsion device according to claim 38, characterized in that When the motor rotates forward, the rotor limit ring rotates to the first position and conflicts with the blocking member, and the gap offset between the second rotor and the first rotor is connected to the forward liquid outlet channel; when the motor rotates reversely, the rotor limit ring rotates to the second position and conflicts with the blocking member, and the gap offset between the second rotor and the first rotor is connected to the reverse liquid outlet channel.

40. The electric propulsion device according to claim 39, characterized in that The rotor limiting ring is provided with a matching boss, one side of the matching boss forms a first blocking portion, and the other side of the matching boss forms a second blocking portion. When the motor rotates forward, the rotor limiting ring rotates forward, and the first blocking portion abuts against the blocking member; when the motor rotates reversely, the rotor limiting ring reverses, and the second blocking portion abuts against the blocking member.

41. The electric propulsion device according to claim 17, characterized in that: It also includes a filter, which is arranged in the liquid inlet path to filter the cooling lubricating liquid entering the liquid inlet path.

42. The electric propulsion device according to claim 41, characterized in that The filter is provided with a magnetic attraction member for absorbing magnetically attractable impurities of the cooling lubricating fluid.

43. A movable device in water area, characterized in that: It comprises a water area carrier and an electric propeller as described in any one of claims 1 to 42, wherein the electric propeller is connected to the water area carrier.

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