An electric drive hatch opening device for ships

Abstract

The present invention relates to the technical field of ships, and discloses an electric drive hatch opening device for ships, which includes an inner rotor motor, comprising an outer housing, an outer stator and an inner rotor provided on the outer housing; a planetary reducer, comprising a first planetary reduction assembly, a second planetary reduction assembly and a third planetary reduction assembly that are sequentially connected for reduction, the first planetary reduction assembly includes a first housing and a first planetary gear set provided in the first housing, the inner rotor is in transmission connection with the first planetary gear set, one end of the first housing is covered with a first support disk, the other end is covered with a second support disk, the first support disk seals the opening of the outer housing, the first support disk and the second support disk are respectively rotatably supported and cooperated with the first planetary gear set, and the first support disk is a disk-shaped magnetic isolation structure. It adopts an integrated electromechanical design, can achieve high torque output, the first support disk and the second support disk share the radial load, can reduce the impact between teeth, improve the service life, and the pure electric drive does not require hydraulic oil, which is beneficial to energy conservation and low carbon emissions.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and particularly to an electric drive hatch opening device for ships. Background Art

[0002] Many of the original equipment on ships operate in an old-fashioned manner, consuming energy and being unfriendly to the environment, and urgently need to be upgraded.

[0003] Specifically, the hatch opening device of a ship is an important part of the ship. At present, the hatch opening devices of ships all rely on an electric drive hydraulic pump to generate high-pressure oil, and then the high-pressure oil drives related equipment to operate. There are quite a few problems in this process: First, there are many energy conversion links in the hydraulic drive device, resulting in extremely large energy losses; Second, the hatch opening points of the ship are distributed, the hydraulic pipelines are extremely complex, and the hydraulic oil of the supporting hydraulic drive device has a high pollution risk; Third, there are many auxiliary equipment corresponding to the hydraulic drive, the hydraulic control link is complex, and the failure rate is quite high.

[0004] In view of this, it is necessary to provide an electric drive hatch opening device for ships, which has a simple structure, low manufacturing cost, and at the same time does not have the problem of pollution caused by oil leakage, and is beneficial to energy conservation and environmental protection. Summary of the Invention

[0005] Based on this, it is necessary to provide an electric drive hatch opening device for ships in view of the existing problems, which has a simple structure, low manufacturing cost, and at the same time does not have the problem of pollution caused by oil leakage, and is beneficial to energy conservation and environmental protection.

[0006] The present application provides an electric drive hatch opening device for ships, which includes:

[0007] An inner rotor motor, including a housing with an open end and an outer stator and an inner rotor arranged in the housing;

[0008] A planetary reducer, including a first planetary reduction assembly, a second planetary reduction assembly and a third planetary reduction assembly that are sequentially connected for reduction drive. The first planetary reduction assembly includes a first housing with two open ends and a first planetary gear set arranged in the first housing. The inner rotor is in transmission connection with the first planetary gear set. One end of the first housing is covered with a first support disk, and the other end is covered with a second support disk. The first support disk seals the opening of the housing. The first support disk and the second support disk are respectively rotatably supported and cooperated with the first planetary gear set. The first support disk is a magnetic separation disk-shaped structure.

[0009] In some embodiments, the first planetary gear set includes:

[0010] A first planetary carrier;

[0011] The first planet gear is rotatably arranged on the first planet carrier;

[0012] The first sun gear meshes with the first planet gear;

[0013] The first input shaft is coaxially fixed with the first sun gear;

[0014] The first internal gear ring is formed on the inner wall of the first housing, and the first internal gear ring meshes with the first planet gear;

[0015] Wherein, one end of the first input shaft is rotatably matched with the first support disk through a first shaft sleeve, the other end is rotatably matched with the first planet carrier through a second shaft sleeve, and the first planet carrier is rotatably installed on the second support disk through a third shaft sleeve.

[0016] In some embodiments, the second planetary reduction assembly includes:

[0017] The second sub-housing has openings at both ends;

[0018] The second planetary gear set is arranged in the second sub-housing. The second planetary gear set includes a second planet carrier, a second planet gear rotatably arranged on the second planet carrier, a second sun gear meshing with the second planet gear, a second input shaft coaxially fixed with the second sun gear, and a second internal gear ring formed on the inner wall of the second sub-housing, and the second internal gear ring meshes with the second planet gear;

[0019] Wherein, the second support disk covers one end of the second sub-housing, the other end of the second sub-housing is covered with a third support disk, the second support disk and the third support disk are respectively rotatably supported and matched with the second planetary gear set, the third planetary reduction assembly is installed and matched with the third support disk, one end of the second input shaft is coaxially fixed with the first planet carrier, the other end is rotatably matched with the second planet carrier through a fourth shaft sleeve, and the second planet carrier is rotatably installed on the third support disk through a fifth shaft sleeve.

[0020] In some embodiments, the second support disk is provided with a plurality of first through holes, and the first through holes communicate the inner cavity of the first housing with the inner cavity of the second sub-housing.

[0021] In some embodiments, the third planetary reduction assembly includes:

[0022] The third sub-housing has openings at both ends;

[0023] The third planetary gear set is disposed in the third sub-housing. The third planetary gear set includes a third planet carrier, third planet gears rotatably disposed on the third planet carrier, a third sun gear meshing with the third planet gears, a third input shaft coaxially fixed to the third sun gear, and a third internal gear ring formed on the inner wall of the third sub-housing. The third internal gear ring meshes with the third planet gears;

[0024] Wherein, a third support disk covers one end of the third sub-housing, and a flange end cover covers the other end of the third sub-housing. The third support disk and the flange end cover are respectively in rotatable support cooperation with the third planetary gear set. The output end of the third planetary gear set is used to output rotational power. One end of the third input shaft is coaxially fixed to the second planet carrier, and the other end is rotatably fitted with the third planet carrier through a sixth bushing. The third planet carrier is rotatably mounted on the flange end cover through a seventh bushing. The third planet carrier is integrally formed with a tapered shaft penetrating the flange end cover.

[0025] In some embodiments, the third planetary gear set further includes:

[0026] A plurality of rolling wheels, each of the rolling wheels is rotatably mounted on the third planet carrier and is arranged at intervals in a circular array around the third input shaft;

[0027] Wherein, a circular ring track surrounding the plurality of rolling wheels is further formed on the inner wall of the third sub-housing, and each of the rolling wheels is in rolling cooperation with the circular ring track.

[0028] In some embodiments, the third support disk is provided with a plurality of second through holes, and the second through holes communicate the inner cavity of the second sub-housing with the inner cavity of the third sub-housing.

[0029] In some embodiments, the marine electric drive hatch opening device further includes:

[0030] A magnetic isolation protective shell, the magnetic isolation protective shell is disposed on the planetary speed reducer and covers the inner rotor motor;

[0031] A cooling fan, a cooling fan is installed at one end of the inner rotor facing away from the planetary speed reducer and protruding from the outer housing;

[0032] Wherein, the magnetic isolation protective shell is provided with an air extraction hole and an air exhaust hole. The air extraction hole is axially opposite to the cooling fan along the axis of the cooling fan, and the air exhaust hole is in the radial direction of the cooling fan.

[0033] In some embodiments, the outer wall of the outer housing protrudes outward to form a first housing portion and a second housing portion. A power control component is accommodated in the first housing portion, and a servo control component is accommodated in the second housing portion;

[0034] Wherein, a plurality of heat dissipation fin portions are further protruded on the outer peripheral wall of the outer housing. The first housing portion and the second housing portion are arranged at intervals, and the heat dissipation fin portions are arranged between the first housing portion and the second housing portion.

[0035] In some embodiments, the air extraction hole is a centrifugal fan. An annular insertion cylinder portion is convexly provided inside the magnetic shielding housing, and the annular insertion cylinder portion is inserted and sleeved on the outer housing;

[0036] Wherein, the annular insertion cylinder portion divides the interior of the magnetic shielding housing into a first internal space inside the annular insertion cylinder portion and a second internal space outside the annular insertion cylinder portion. The heat dissipation fan is accommodated in the first internal space. The annular insertion cylinder portion has a side wall facing away from the air exhaust hole, and air guiding holes are formed on the side wall of the annular insertion cylinder portion facing away from the air exhaust hole. The air extraction hole is sequentially communicated with the air exhaust hole through the first internal space, the air guiding holes, and the second internal space.

[0037] Advantages of the present invention:

[0038] The shipboard electric drive hatch opening device of the present invention includes an inner rotor motor and a planetary reducer. The inner rotor motor includes a housing with an open end, an outer stator and an inner rotor disposed in the housing. The planetary reducer includes a first planetary reduction assembly, a second planetary reduction assembly, and a third planetary reduction assembly that are sequentially connected for reduction drive. The first planetary reduction assembly includes a first housing with open ends and a first planetary gear set disposed in the first housing. The inner rotor is drivingly connected to the first planetary gear set. A first support disk is provided on one end cover of the first housing, and a second support disk is provided on the other end cover of the first housing. The first support disk seals the opening of the housing. The first support disk and the second support disk are respectively rotatably supported and cooperated with the first planetary gear set. The first support disk is a magnetic isolation disk-shaped structure. Its advantages are that the inner rotor motor and the planetary reducer adopt an integrated electromechanical design. Specifically, the housing of the inner rotor motor does not have an end cover, and the first support disk is fixedly connected to the housing and seals the opening, which can realize an integrated structural design and reduce the number of parts. The inner rotor motor cooperates with the planetary reducer for the third reduction power output, which can achieve high power and high torque output. In addition, the first support disk and the second support disk are respectively rotatably cooperated with the first planetary gear set, thereby sharing the radial load of the first planetary gear set. After the first planetary gear set is accurately positioned, the tooth clearance is constant, which can reduce the tooth impact, reduce noise, and is beneficial to improving the service life. Moreover, the inner rotor motor is directly driven without the need for supporting hydraulic oil, which is beneficial to low-carbon emissions. At the same time, compared with the hydraulic method, the direct drive of the inner rotor motor can reduce the energy conversion process and reduce the energy loss in the energy conversion link, which is beneficial to energy conservation. In addition, the first support disk is a magnetic isolation disk-shaped structure, which plays a role in isolating the magnetism of the inner rotor, thereby suppressing the magnetization pollution to the first planetary reduction assembly, the second planetary reduction assembly, and the third planetary reduction assembly. In addition, the magnetic field distribution of the inner rotor motor is concentrated, the energy conversion efficiency is high, and the overall structure is compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only one embodiment of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0040] Figure 1 A three-dimensional schematic diagram of the shipboard electric drive hatch opening device provided for some embodiments of the present application;

[0041] Figure 2 For Figure 1 A cross-sectional schematic diagram of the shipboard electric drive hatch opening device along the B-B direction in

[0042] Figure 3 Exploded view of the marine electric drive hatch opening device provided for some embodiments of the present application;

[0043] Figure 4 Stereoscopic view of the inner rotor motor and the cooling fan of the marine electric drive hatch opening device provided for some embodiments of the present application;

[0044] Figure 5 Stereoscopic view of the magnetic isolation protective shell of the marine electric drive hatch opening device provided for some embodiments of the present application.

[0045] Reference numerals:

[0046] 1. Inner rotor motor; 11. Outer housing; 111. Heat conduction fin part; 112. First bin part; 113. Second bin part; 12. Outer stator; 13. Inner rotor;

[0047] 2. Planetary reducer;

[0048] 21. First planetary reduction assembly; 211. First housing; 212. First planetary gear set; 2121. First planet carrier; 2122. First planet gear; 2123. First sun gear; 2124. First input shaft; 2125. First internal gear ring; 2126. First shaft sleeve; 2127. Second shaft sleeve; 2128. Third shaft sleeve; 213. First support disc; 214. Second support disc; 2141. First through hole;

[0049] 22. Second planetary reduction assembly; 221. Second sub-housing; 222. Second planetary gear set; 2221. Second planet carrier; 2222. Second planet gear; 2223. Second sun gear; 2224. Second input shaft; 2225. Second internal gear ring; 2226. Fourth shaft sleeve; 2227. Fifth shaft sleeve; 223. Third support disc; 2231. Second through hole;

[0050] 23. Third planetary reduction assembly; 231. Third sub-housing; 2311. Circular ring track; 232. Third planetary gear set; 2321. Third planet carrier; 2322. Third planet gear; 2323. Third sun gear; 2324. Third input shaft; 2325. Third internal gear ring; 2326. Sixth shaft sleeve; 2327. Seventh shaft sleeve; 2328. Tapered shaft; 2329. Rolling wheel; 233. Flange end cover;

[0051] 3. Magnetic isolation protective shell; 31. Air extraction hole; 32. Air exhaust hole; 33. Annular insertion cylinder part; 331. Air guiding hole; 34. First internal space; 35. Second internal space;

[0052] 4. Cooling fan. Detailed implementation manners

[0053] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0054] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention.

[0055] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0056] In the present invention, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present invention, unless otherwise clearly specified or limited, a feature may be in direct contact with a second feature or indirectly in contact with the second feature through an intermediate medium when it is "on" or "under" the second feature. Moreover, a feature being "above", "over" or "on top of" a second feature may mean that the feature is directly above or obliquely above the second feature, or simply indicates that the feature has a higher horizontal height than the second feature. A feature being "under", "below" or "beneath" a second feature may mean that the feature is directly below or obliquely below the second feature, or simply indicates that the feature has a lower horizontal height than the second feature.

[0058] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation manner.

[0059] Reference Figures 1-5 , an embodiment of the present application provides a marine electric drive hatch opening device. The marine electric drive hatch opening device includes an inner rotor motor 1 and a planetary reducer 2. The inner rotor motor 1 includes a housing 11 with an open end, an outer stator 12 fixed inside the housing 11, and an inner rotor 13 rotatably disposed in the housing 11. The inner rotor 13 has an output end extending out of the opening; the planetary reducer 2 includes a first planetary reduction assembly 21, a second planetary reduction assembly 22 and a third planetary reduction assembly 23 that are sequentially connected for reduction transmission; wherein, the first planetary reduction assembly 21 includes a first housing 211 with both ends open and a first planetary gear set 212 disposed in the first housing 211. The output end is in transmission connection with the first planetary gear set 212. One end of the first housing 211 is covered with a first support disk 213, and the other end is covered with a second support disk 214. The first support disk 213 is fixedly connected to the housing 11 and covers the opening. The first support disk 213 and the second support disk 214 are respectively in rotatable support cooperation with the first planetary gear set 212.

[0060] Compared with the traditional motor with hydraulic drive, the inner rotor motor 1 and the planetary reducer 2 of the on-board electric drive hatch opening device according to the embodiments of the present application adopt an integrated electromechanical design. The outer housing 11 of the inner rotor motor 1 does not have an end cover. The first support disk 213 is fixedly connected to the outer housing 11 and seals the opening to achieve sealing, enabling an integrated structural design and reducing the number of components. The inner rotor motor 1 cooperates with the planetary reducer 2 to output the third-stage decelerated power, enabling high-power and high-torque output. In addition, the first support disk 213 and the second support disk 214 are respectively rotatably matched with the first planetary gear set 212, thereby sharing the radial load of the first planetary gear set 212. After the first planetary gear set 212 is accurately positioned, the tooth clearance is constant, reducing tooth impact and noise, and being beneficial to improving the service life. Moreover, the inner rotor motor 1 is directly driven without the need for hydraulic oil-related accessories, being beneficial to low-carbon emissions. At the same time, the inner rotor motor 1 is directly driven, reducing the energy conversion process compared with hydraulic drive and reducing the energy loss in the energy conversion link, being beneficial to energy conservation. In addition, the first support disk 213 is a magnetic isolation disk-shaped structure, playing a role in isolating the magnetism of the inner rotor 13, thereby suppressing its magnetization pollution to the first planetary reduction assembly 21, the second planetary reduction assembly 22, and the third planetary reduction assembly 23. In addition, the magnetic field distribution of the inner rotor motor 1 is concentrated, with high energy conversion efficiency and a compact overall structure.

[0061] Reference Figures 1-5, in some embodiments, the first planetary gear set 212 includes a first planet carrier 2121, first planet gears 2122, a first sun gear 2123, a first input shaft 2124, a first internal gear ring 2125, a first bushing 2126, a second bushing 2127, and a third bushing 2128; the first planet gears 2122 are rotatably disposed on the first planet carrier 2121; the first sun gear 2123 meshes with the first planet gears 2122; the first input shaft 2124 is coaxially fixed to the first sun gear 2123; the inner wall of the first housing 211 forms the first internal gear ring 2125, and the first internal gear ring 2125 meshes with the first planet gears 2122; wherein, one end of the first input shaft 2124 is rotatably engaged with the first support disk 213 through the first bushing 2126, the other end of the first input shaft 2124 is rotatably engaged with the first planet carrier 2121 through the second bushing 2127, and the first planet carrier 2121 is rotatably mounted on the second support disk 214 through the third bushing 2128. Specifically, the first sun gear 2123 and the first input shaft 2124 can be connected by a key or integrally formed. By using the first bushing 2126, the second bushing 2127, and the third bushing 2128, the rotatable support fit between the first planet carrier 2121, the first input shaft 2124 and the corresponding first support disk 213 and the second support disk 214 can be realized, thereby being able to share the radial load of the first planetary gear set 212, reduce the tooth impact, reduce the noise, and improve the service life. The inner wall of the first housing 211 forms the first internal gear ring 2125, which adopts an integrally formed structure, can simplify the number of components, has a high integration degree, and simplifies the assembly process.

[0062] In some embodiments, referring to Figures 1-5 , the second planetary reduction assembly 22 includes a second sub-housing 221 with openings at both ends and a second planetary gear set 222 disposed in the second sub-housing 221. The first planet carrier 2121 is in decelerating transmission connection with the second planetary gear set 222. The second support disk 214 covers one end of the second sub-housing 221, and the other end of the second sub-housing 221 is covered with a third support disk 223. The second support disk 214 and the third support disk 223 are respectively in rotatable support fit with the second planetary gear set 222, and the third planetary reduction assembly 23 is disposed on the third support disk 223. Similarly, the second support disk 214 and the third support disk 223 are respectively in rotatable support fit with the second planetary gear set 222, which can also share the radial load of the second planetary gear set 222, further reduce the tooth impact, reduce the noise, and further improve the service life. The first planet carrier 2121 is in decelerating transmission connection with the second planetary gear set 222, and the second reduction is achieved through the second planetary gear set 222, which is beneficial to further increase the output torque.

[0063] Referring to Figures 1-5, in some embodiments, the second planetary gear set 222 includes a second planet carrier 2221, second planet gears 2222, a second sun gear 2223, a second input shaft 2224, a second internal gear ring 2225, a fourth bushing 2226, and a fifth bushing 2227; the second planet gears 2222 are rotatably disposed on the second planet carrier 2221; the second sun gear 2223 meshes with the second planet gears 2222; the second input shaft 2224 is coaxially fixed to the second sun gear 2223; an inner wall of the second sub-housing 221 forms the second internal gear ring 2225, and the second internal gear ring 2225 meshes with the second planet gears 2222; wherein, one end of the second input shaft 2224 is coaxially fixed to the first planet carrier 2121, the other end of the second input shaft 2224 is rotatably mated with the second planet carrier 2221 through the fourth bushing 2226, and the second planet carrier 2221 is rotatably mounted on the third support disk 223 through the fifth bushing 2227.

[0064] Similarly, the second sun gear 2223 and the second input shaft 2224 can be connected by a key or integrally formed. In addition, by using the fourth bushing 2226 and the fifth bushing 2227, a rotatable support fit is achieved between the second planet carrier 2221, the second input shaft 2224 and the corresponding third support disk 223. The second input shaft 2224 is coaxially fixedly connected to the first planet carrier 2121, and a rotatable fit is achieved between the first planet carrier 2121 and the second support disk 214 through the third bushing 2128. Thus, it is equivalent to the second support disk 214 indirectly providing rotatable support for the second input shaft 2224, that is, the overall support for the second planetary gear set 222 is formed, which can share the radial load of the second planetary gear set 222, reduce the inter-tooth impact, reduce noise, and improve the service life. Similarly, the inner wall of the second sub-housing 221 forms the second internal gear ring 2225, which adopts an integrally formed structure, can simplify the number of components, has a high integration degree, and simplifies the assembly process.

[0065] In some embodiments, referring to Figures 1-5, the third planetary deceleration assembly 23 includes a third sub-housing 231 with openings at both ends and a third planetary gear set 232 disposed in the third sub-housing 231. The second planetary carrier 2221 is in decelerating transmission connection with the third planetary gear set 232. The third support disk 223 covers one end of the third sub-housing 231, and a flange end cover 233 covers the other end of the third sub-housing 231. The third support disk 223 and the flange end cover 233 are respectively in rotatable support cooperation with the third planetary gear set 232. The output end of the third planetary gear set 232 is used to output rotational power. Similarly, the third support disk 223 and the flange end cover 233 are respectively in rotatable support cooperation with the third planetary gear set 232, which can also share the radial load of the third planetary gear set 232, and thus can further reduce the impact between teeth, reduce noise, and further improve the service life. The second planetary carrier 2221 is in decelerating transmission connection with the third planetary gear set 232, and the third deceleration is achieved through the third planetary gear set 232, which is beneficial to further increase the output torque.

[0066] Reference Figures 1-5 , in some embodiments, the third planetary gear set 232 includes a third planetary carrier 2321, third planetary gears 2322, a third sun gear 2323, a third input shaft 2324, a third internal gear ring 2325, a sixth bushing 2326, and a seventh bushing 2327; the third planetary gears 2322 are rotatably disposed on the third planetary carrier 2321; the third sun gear 2323 meshes with the third planetary gears 2322; the third input shaft 2324 is coaxially fixed with the third sun gear 2323; the inner wall of the third sub-housing 231 forms a third internal gear ring 2325, and the third internal gear ring 2325 meshes with the third planetary gears 2322; wherein, one end of the third input shaft 2324 is coaxially fixed with the second planetary carrier 2221, the other end of the third input shaft 2324 is rotatably fitted with the third planetary carrier 2321 through the sixth bushing 2326, the third planetary carrier 2321 is rotatably mounted on the flange end cover 233 through the seventh bushing 2327, and the third planetary carrier 2321 integrally forms a tapered shaft 2328 passing through the flange end cover 233, and the tapered shaft 2328 is used to output rotational power.

[0067] Similarly, the third sun gear 2323 and the third input shaft 2324 can be connected by a key or integrally formed. In addition, the sixth bushing 2326 and the seventh bushing 2327 are used to achieve the rotatable support fit between the third planet carrier 2321, the third input shaft 2324 and the corresponding flange end cover 233. Specifically, the third planet carrier 2321 and the flange end cover 233 achieve rotatable fit through the seventh bushing 2327, the third input shaft 2324 and the flange end cover 233 achieve rotatable fit through the sixth bushing 2326. The third input shaft 2324 is coaxially and fixedly connected to the second planet carrier 2221, and the second planet carrier 2221 and the third support disk 223 achieve rotatable fit through the fifth bushing 2227. Thus, it is equivalent to the third support disk 223 indirectly achieving rotatable support for the third input shaft 2324, that is, the overall forms the support for the third planetary gear set 232, which can share the radial load of the third planetary gear set 232, reduce the tooth - to - tooth impact, reduce noise, and improve the service life. Similarly, the inner wall of the third sub - housing 231 forms a third internal gear ring 2325, which adopts an integrally formed structure, can simplify the number of parts, has a high degree of integration, and simplifies the assembly process.

[0068] Further, referring to Figures 1-5 , in some embodiments, the third planetary gear set 232 further includes a plurality of rolling wheels 2329. Each rolling wheel 2329 is rotatably installed on the third planet carrier 2321 and is arranged at intervals in a circular array around the third input shaft 2324. Among them, the inner wall of the third sub - housing 231 further forms an annular track 2311 surrounding the plurality of rolling wheels 2329, and each rolling wheel 2329 respectively rolls with the annular track 2311. Thus, the third sub - housing 231 can further achieve rotatable support for the third planet carrier 2321, making its stability and reliability higher.

[0069] Referring to Figures 1-5 , in some embodiments, the second support disk 214 is provided with a number of first through - holes 2141. The first through - holes 2141 communicate the inner cavity of the first housing 211 with the inner cavity of the second sub - housing 221. Such a design allows the lubricant to freely flow and lubricate between the inner cavity of the first housing 211 and the inner cavity of the second sub - housing 221 when filling with lubricant for lubrication.

[0070] Similarly, in some embodiments, the third support disk 223 is provided with a number of second through - holes 2231. The second through - holes 2231 communicate the inner cavity of the second sub - housing 221 with the inner cavity of the third sub - housing 231. Such a design allows the lubricant to freely flow and lubricate between the inner cavity of the second sub - housing 221 and the inner cavity of the third sub - housing 231 when filling with lubricant for lubrication.

[0071] In some embodiments, referring to Figures 1-5, the marine electric drive hatch opening device further includes a magnetic isolation protective shell 3 and a cooling fan 4. The magnetic isolation protective shell 3 is arranged on the planetary reducer 2 and covers the inner rotor motor 1. On the one hand, the magnetic isolation protective shell 3 plays a protective role. On the other hand, the magnetic isolation protective shell 3 plays a role of magnetic isolation, suppressing the magnetization influence of the permanent magnet of the inner rotor 13 on other components. One end of the inner rotor 13 facing away from the planetary reducer 2 extends out of the outer shell 11 and is installed with a cooling fan 4. Furthermore, the rotation of the inner rotor 13 drives the cooling fan 4 to rotate synchronously to realize blowing and cooling. Specifically, the magnetic isolation protective shell 3 is provided with an air extraction hole 31 and an air exhaust hole 32. The air extraction hole 31 is axially aligned with the cooling fan 4 along the axis of the cooling fan 4, and the air exhaust hole 32 is located in the radial direction of the cooling fan 4. The cooling fan 4 can be an existing structure, which can suck external air into the magnetic isolation protective shell 3 through the air extraction hole 31 to blow and cool the outer shell 11, and discharge the hot air through the air exhaust hole 32.

[0072] In some embodiments, referring to Figures 1-5 , the outer wall of the outer shell 11 protrudes to form a first bin part 112 and a second bin part 113. The first bin part 112 houses a power control component, and the second bin part 113 houses a servo control component. The structure is compact and has a high integration degree, belonging to a new type of motor structure. In addition, the power control component and the servo control component can refer to the electric vehicle drive module, with good speed regulation linearity and stable low-speed large torque load. Further, a plurality of heat conduction fin parts 111 also protrude from the outer peripheral wall of the outer shell 11. The first bin part 112 and the second bin part 113 are arranged at intervals, and the heat conduction fin parts 111 are arranged between the first bin part 112 and the second bin part 113. Thus, the heat dissipation area is increased through the heat conduction fin parts 111 to accelerate heat dissipation. Moreover, the heat conduction fin parts 111 are arranged between the first bin part 112 and the second bin part 113, so that the first bin part 112 and the second bin part 113 are arranged at intervals for heat dissipation, which is beneficial to reducing the excessive concentration of heat in one part and can dissipate heat better and faster.

[0073] In addition, in some embodiments, the inner rotor motor 1 can integrate two modes of AC frequency conversion and rectifier DC speed regulation for selection.

[0074] In some embodiments, referring to Figures 1-5, the air extraction hole 31 is a centrifugal fan. The magnetic shielding housing 3 is convexly provided with an annular insertion cylinder portion 33, and the annular insertion cylinder portion 33 is inserted and sleeved on the outer housing 11. Among them, the annular insertion cylinder portion 33 divides the interior of the magnetic shielding housing 3 into a first internal space 34 located within the annular insertion cylinder portion 33 and a second internal space 35 located outside the annular insertion cylinder portion 33. The cooling fan 4 is accommodated in the first internal space 34. The annular insertion cylinder portion 33 has a side wall facing away from the air exhaust hole 32, and a wind guiding hole 331 is opened on the side wall of the annular insertion cylinder portion 33 facing away from the air exhaust hole 32. The air extraction hole 31 is communicated with the air exhaust hole 32 through the first internal space 34, the wind guiding hole 331, and the second internal space 35 in sequence. In heat dissipation, this design structure can effectively increase the air flow path, thereby increasing the heat dissipation effect and achieving more comprehensive and efficient heat dissipation for the inner rotor motor 1.

[0075] In addition, referring to Figure 2 and Figure 4 , in some embodiments, a manual driving jack 131 is opened at one end of the inner rotor 13 of the marine electric drive module where the cooling fan 4 is installed. Thus, when the marine electric drive module fails to be electrically driven, the magnetic shielding housing 3 can be removed, and then an existing rotating swing rod can be inserted into the manual driving jack 131 for emergency manual rotation. The rotating swing rod is an existing auxiliary tool and will not be elaborated here. The manual driving jack 131 can be a hexagonal prism hole or a prism hole of other shapes.

[0076] The marine electric drive hatch opening device provided by the embodiment of the present application can adjust the reduction ratio and the power size design of the inner rotor motor 1, achieving a maximum output torque of 17000 N·m, and can meet the needs of the general hatch opening driving force. In addition, it can be expanded and designed in this structural form when multi-purpose needs arise, such as further changing the reduction ratio and further changing the input motor power.

[0077] Finally, it should be noted that the technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as these combinations of technical features do not conflict, they should be considered as the scope described in this specification.

[0078] The above embodiments only represent one implementation manner of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A marine electric drive hatch opening device, characterized in that, Comprising: An inner rotor motor (1), including a housing (11) with an open end, and an outer stator (12) and an inner rotor (13) arranged on the housing (11); A planetary reducer (2), including a first planetary reduction assembly (21), a second planetary reduction assembly (22), and a third planetary reduction assembly (23) that are sequentially connected for reduction drive. The first planetary reduction assembly (21) includes a first housing (211) with open ends at both ends and a first planetary gear set (212) arranged in the first housing (211). The inner rotor (13) is in drive connection with the first planetary gear set (212). One end of the first housing (211) is covered with a first support disk (213), and the other end is covered with a second support disk (214). The first support disk (213) seals the opening of the housing (11). The first support disk (213) and the second support disk (214) are respectively in rotatable support cooperation with the first planetary gear set (212). The first support disk (213) is a magnetic isolation disk-shaped structure; The first planetary gear set (212) includes: A first planetary carrier (2121); A first planetary gear (2122), rotatably arranged on the first planetary carrier (2121); A first sun gear (2123), meshing with the first planetary gear (2122); A first input shaft (2124), coaxially fixed with the first sun gear (2123); A first internal gear ring (2125), the inner wall of the first housing (211) forms the first internal gear ring (2125), and the first internal gear ring (2125) meshes with the first planetary gear (2122); Wherein, one end of the first input shaft (2124) is in rotatable cooperation with the first support disk (213) through a first shaft sleeve (2126), and the other end is in rotatable cooperation with the first planetary carrier (2121) through a second shaft sleeve (2127). The first planetary carrier (2121) is rotatably installed on the second support disk (214) through a third shaft sleeve (2128); The marine electric drive hatch opening device further includes: A magnetic isolation protective shell (3), the magnetic isolation protective shell (3) is arranged on the planetary reducer (2) and covers the inner rotor motor (1); A cooling fan (4), one end of the inner rotor (13) facing away from the planetary reducer (2) extends out of the housing (11) and is installed with the cooling fan (4); Wherein, the magnetic isolation protective shell (3) is provided with an air extraction hole (31) and an air exhaust hole (32). The air extraction hole (31) is axially aligned with the cooling fan (4) along the axis of the cooling fan (4), and the air exhaust hole (32) is located in the radial direction of the cooling fan (4); The air extraction hole (31) is a centrifugal fan. An annular insertion cylinder part (33) protrudes inside the magnetic isolation protective shell (3), and the annular insertion cylinder part (33) is inserted and sleeved on the housing (11); Among them, the annular insertion tube part (33) divides the interior of the magnetic isolation protection shell (3) into a first internal space (34) located within the annular insertion tube part (33) and a second internal space (35) located outside the annular insertion tube part (33). The cooling fan (4) is accommodated in the first internal space (34). The annular insertion tube part (33) has a side wall facing away from the exhaust hole (32). A wind guiding hole (331) is formed in the side wall of the annular insertion tube part (33) facing away from the exhaust hole (32). The air extraction hole (31) is communicated with the exhaust hole (32) through the first internal space (34), the wind guiding hole (331), and the second internal space (35) in sequence.

2. The shipboard electric drive hatch opening device according to claim 1, characterized in that, The second planetary reduction assembly (22) includes: A second sub-shell (221) with openings at both ends; A second planetary gear set (222) disposed in the second sub-shell (221). The second planetary gear set (222) includes a second planetary carrier (2221), second planetary gears (2222) rotatably disposed on the second planetary carrier (2221), a second sun gear (2223) meshing with the second planetary gears (2222), a second input shaft (2224) coaxially fixed with the second sun gear (2223), and a second internal gear ring (2225) formed on the inner wall of the second sub-shell (221). The second internal gear ring (2225) meshes with the second planetary gears (2222); Among them, the second support disk (214) covers one end of the second sub-shell (221), and a third support disk (223) covers the other end of the second sub-shell (221). The second support disk (214) and the third support disk (223) are respectively in rotatable support cooperation with the second planetary gear set (222). The third planetary reduction assembly (23) is installed and cooperated with the third support disk (223). One end of the second input shaft (2224) is coaxially fixed with the first planetary carrier (2121), and the other end is rotatably cooperated with the second planetary carrier (2221) through a fourth bushing (2226). The second planetary carrier (2221) is rotatably installed on the third support disk (223) through a fifth bushing (2227).

3. The shipboard electric drive hatch opening device according to claim 2, wherein The second support disk (214) is provided with a plurality of first through holes (2141), and the first through holes (2141) communicate the inner cavity of the first shell (211) with the inner cavity of the second sub-shell (221).

4. The shipboard electric drive hatch opening device according to claim 2, wherein, The third planetary reduction assembly (23) includes: A third sub-shell (231) with openings at both ends; The third planetary gear set (232) is disposed in the third sub-housing (231). The third planetary gear set (232) includes a third planet carrier (2321), third planet gears (2322) rotatably disposed on the third planet carrier (2321), a third sun gear (2323) meshing with the third planet gears (2322), a third input shaft (2324) coaxially fixed to the third sun gear (2323), and a third internal gear ring (2325) formed on the inner wall of the third sub-housing (231). The third internal gear ring (2325) meshes with the third planet gears (2322). Wherein, the third support disk (223) covers one end of the third sub-housing (231), and a flange end cover (233) covers the other end of the third sub-housing (231). The third support disk (223) and the flange end cover (233) are respectively in rotatable support cooperation with the third planetary gear set (232). The output end of the third planetary gear set (232) is used to output rotational power. One end of the third input shaft (2324) is coaxially fixed to the second planet carrier (2221), and the other end is rotatably mated with the third planet carrier (2321) through a sixth bushing (2326). The third planet carrier (2321) is rotatably mounted on the flange end cover (233) through a seventh bushing (2327). The third planet carrier (2321) is integrally formed with a tapered shaft (2328) passing through the flange end cover (233).

5. The shipboard electric drive hatch opening device according to claim 4, wherein, The third planetary gear set (232) further includes: A plurality of rolling wheels (2329), each of the rolling wheels (2329) is rotatably mounted on the third planet carrier (2321) and is arranged at intervals in a circular array around the third input shaft (2324); Wherein, a circular ring track (2311) surrounding the plurality of rolling wheels (2329) is further formed on the inner wall of the third sub-housing (231), and each of the rolling wheels (2329) is respectively in rolling cooperation with the circular ring track (2311).

6. The shipboard electric drive hatch opening device according to claim 4, wherein The third support disk (223) is provided with a number of second through holes (2231), and the second through holes (2231) communicate the inner cavity of the second sub-housing (221) with the inner cavity of the third sub-housing (231).

7. The shipboard electric drive hatch opening device according to claim 1, characterized in that, An outer wall of the outer housing (11) protrudes to form a first housing portion (112) and a second housing portion (113). A power control component is accommodated in the first housing portion (112), and a servo control component is accommodated in the second housing portion (113); Wherein, a plurality of heat dissipation fin portions (111) are further protruded on the outer peripheral wall of the outer housing (11). The first housing portion (112) and the second housing portion (113) are arranged at intervals, and the heat dissipation fin portions (111) are arranged between the first housing portion (112) and the second housing portion (113).

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