Support device for rim propulsion motor rotor and ship propulsion system

Abstract

The present invention relates to the technical field of ship propulsion systems, and provides a support device for a rim-propulsion motor rotor and a ship propulsion system. The support device for the rim-propulsion motor rotor comprises: a main shaft, a rotor, a rotor thrust plate, an elastic body, a first thrust pad assembly and a second thrust pad assembly; the rotor is rotatably arranged on the main shaft, and the rotor is used to be connected to a propeller; the rotor thrust plate is arranged between the rotor and the main shaft, and the rotor thrust plate has a first end face and a second end face that are separated from each other along the axial direction of the main shaft; the elastic body is arranged between the rotor and the rotor thrust plate, and the elastic body is respectively connected to the rotor and the rotor thrust plate; the first end face is connected to the main shaft through the first thrust pad assembly; the second end face is connected to the main shaft through the second thrust pad assembly; the present invention realizes vibration reduction and buffering of the rotor and the main shaft by arranging an elastic body between the rotor thrust plate and the rotor through the deformation of the elastic body.

Description

Technical Field

[0001] The present invention relates to the technical field of ship propulsion systems, and in particular to a support device for a rim propulsion motor rotor and a ship propulsion system. Background Art

[0002] Compared with traditional motors, rim motors have a more compact structure, smaller size and weight. Therefore, rim motors have broad application prospects.

[0003] When the rim motor is used in a ship propulsion system, the rim motor is used to generate thrust for the ship's navigation, so it is called a rim propulsion motor. During the operation of the rim propulsion motor, the rotor of the rim propulsion motor is rotatably installed on the main shaft. The main shaft not only needs to support the weight of the rim propulsion motor rotor, but also needs to transmit the axial thrust generated by the propeller. Moreover, the working environment of the rim propulsion motor is harsh, and the main shaft and the rim propulsion motor will produce impact vibration, which can easily cause damage to the main shaft and the rotor of the rim propulsion motor. Summary of the invention

[0004] The invention provides a support device for a rim propulsion motor rotor and a ship propulsion system, which are used to solve or improve the problem of poor anti-impact vibration performance of the rim propulsion motor in the existing ship propulsion system.

[0005] The present invention provides a supporting device for a rim propulsion motor rotor, comprising: a main shaft, a rotor, a rotor thrust plate, an elastic body, a first thrust pad assembly and a second thrust pad assembly; the rotor is rotatably arranged on the main shaft; the rotor is used to be connected to a propeller; the rotor thrust plate is arranged between the rotor and the main shaft, and the rotor thrust plate has a first end face and a second end face that are opposite to each other along the axial direction of the main shaft; the elastic body is arranged between the rotor and the rotor thrust plate, and the elastic body is respectively connected to the rotor and the rotor thrust plate; the first end face is connected to the main shaft through the first thrust pad assembly; the second end face is connected to the main shaft through the second thrust pad assembly.

[0006] According to a support device for a rim-propelled motor rotor provided by the present invention, the elastomer is annular, and the elastomer is provided with a plurality of vibration-damping holes along the axial direction of the main shaft. The plurality of vibration-damping holes are arranged along the circumference of the elastomer.

[0007] According to a support device for a rim-propulsion motor rotor provided by the present invention, the support device for a rim-propulsion motor rotor further comprises: a bearing assembly; the main shaft is connected to the rotor thrust plate via the bearing assembly.

[0008] According to a supporting device for a rim-propulsion motor rotor provided by the present invention, the supporting device for a rim-propulsion motor rotor also includes: a cover cylinder; the cover cylinder is detachably connected to the first end face of the rotor thrust plate; the outer wall of the cover cylinder is connected to the elastomer; the bearing assembly includes: a bearing sleeve and a bearing bushing; the main shaft is connected to the bearing sleeve, the bearing sleeve is connected to the bearing bushing, and the bearing bushing forms a preset gap with the inner wall of the cover cylinder.

[0009] According to a supporting device for a rim-propulsion motor rotor provided by the present invention, the supporting device for a rim-propulsion motor rotor also includes: a sealing ring and a sealing cover; the rotor thrust plate is arranged close to one end of the main shaft, the end of the cover tube facing away from the rotor thrust plate is detachably connected to the sealing ring, and the inner side wall of the sealing ring is connected to the outer side wall of the main shaft; the sealing cover is detachably connected to the second end face.

[0010] According to a supporting device for a rim propulsion motor rotor provided by the present invention, the first thrust pad assembly includes: a first thrust pad and a first thrust pad disc; the first thrust pad is connected to the main shaft, the first thrust pad disc is connected to the first end face, the first thrust pad and the first thrust pad disc are arranged opposite to each other, and a preset gap is formed between the first thrust pad and the first thrust pad disc.

[0011] According to a supporting device for a rim-propulsion motor rotor provided by the present invention, the first thrust pad includes: a plurality of first thrust pads; the first thrust pad is in a fan-shaped ring, and the plurality of first thrust pads are evenly distributed around the center of the first thrust pad, and a first gap is formed between two adjacent first thrust pads.

[0012] According to a supporting device for a rim propulsion motor rotor provided by the present invention, the second thrust pad assembly includes: a second thrust pad and a second thrust pad disc; the second thrust pad is connected to the main shaft, the second thrust pad disc is connected to the second end face, the second thrust pad and the second thrust pad disc are arranged opposite to each other, and a preset gap is formed between the second thrust pad and the second thrust pad disc.

[0013] According to a supporting device for a rim-propulsion motor rotor provided by the present invention, the second thrust pad includes: a plurality of second thrust pads; the second thrust pad is in a fan-shaped ring, and the plurality of second thrust pads are evenly distributed around the center of the second thrust pad, and a second gap is formed between two adjacent second thrust pads.

[0014] The present invention also provides a ship propulsion system, comprising: a propeller and the supporting device for the rotor of the rim propulsion motor as described above; the propeller is connected to the rotor of the supporting device for the rotor of the rim propulsion motor.

[0015] The support device for the rotor of the rim propulsion motor and the ship propulsion system provided by the present invention provide an elastic body between the rotor thrust plate and the rotor, and the elastic body can reduce vibration and buffer the vibration and impact transmitted from the propeller to the rotor; during the operation of the rim propulsion motor, the thrust generated by the propeller is along the axial direction of the main shaft. When the rotor drives the propeller to rotate in the opposite direction, the thrust generated by the propeller is to the left, that is, the rotor is subjected to a leftward force, and the force is transmitted to the main shaft through the elastic body, the rotor thrust plate and the first thrust washer assembly in sequence, so as to realize the leftward driving of the ship, that is, to realize the leftward driving of the ship. Reversing; when the rotor drives the propeller to rotate forward, the thrust generated by the propeller is to the right, that is, the rotor is subjected to a force to the right, and the force is transmitted to the main shaft through the elastomer, the rotor thrust plate and the second thrust pad assembly in sequence, so as to realize the ship's rightward travel, that is, to realize the ship's forward travel; when the propeller is subjected to the vibration impact of the fluid along the radial direction of the main shaft, the elastomer close to the impact side is compressed by force. Since the elastomer has a certain deformation capacity, it can achieve vibration reduction and buffering of radial vibration impact, reduce the vibration of the rotor and the main shaft, and improve the working stability of the rim propulsion motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of a support device for a rim propulsion motor rotor provided by the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the elastomer provided by the present invention;

[0019] Figure 3 is a structural schematic diagram of a bearing assembly provided by the present invention;

[0020] Figure 4 It is a structural schematic diagram of a first thrust pad provided by the present invention;

[0021] Figure 5 It is a structural schematic diagram of a second thrust pad provided by the present invention;

[0022] Reference numerals:

[0023] 1: main shaft; 11: positioning retaining ring; 2: rotor; 3: rotor thrust plate; 4: elastomer; 41: vibration reduction hole; 5: first thrust pad assembly; 51: first thrust pad; 511: first thrust pad; 52: first thrust pad disc; 53: first thrust pad seat; 6: second thrust pad assembly; 61: second thrust pad; 611: second thrust pad; 62: second thrust pad disc; 63: second thrust pad seat; 7: stator support component; 8: bearing assembly; 81: bearing bushing; 82: bearing bushing; 83: positioning sleeve; 9: cover cylinder; 91: sealing ring; 92: sealing cover. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the embodiments of the present invention, it should be noted that the terms "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of 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 therefore cannot be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0027] Combine the following Figures 1 to 5 The invention describes a support device for a rim-propulsion motor rotor and a ship propulsion system.

[0028] like Figure 1 As shown, the supporting device for the rim propulsion motor rotor shown in this embodiment includes: a main shaft 1, a rotor 2, a rotor thrust plate 3, an elastic body 4, a first thrust pad assembly 5 and a second thrust pad assembly 6.

[0029] The rotor 2 is rotatably arranged on the main shaft 1, and the rotor 2 is used to be connected to the propeller; the rotor thrust plate 3 is arranged between the rotor 2 and the main shaft 1, and the rotor thrust plate 3 has a first end face and a second end face that are opposite to each other along the axial direction of the main shaft 1; the elastomer 4 is arranged between the rotor 2 and the rotor thrust plate 3, and the elastomer 4 is connected to the rotor 2 and the rotor thrust plate 3 respectively; the first end face is connected to the main shaft 1 through the first thrust pad assembly 5; the second end face is connected to the main shaft 1 through the second thrust pad assembly 6; wherein the main shaft 1 is connected to the stator support component 7 of the rim propulsion motor.

[0030] Specifically, the support device for the rotor of the rim propulsion motor shown in this embodiment is configured with an elastic body 4 between the rotor thrust plate 3 and the rotor 2. The elastic body 4 can reduce vibration and buffer the vibration and impact transmitted from the propeller to the rotor 2. During the operation of the rim propulsion motor, the thrust generated by the propeller is along the axial direction of the main shaft 1. When the rotor 2 drives the propeller to rotate in the opposite direction, the thrust generated by the propeller is to the left, that is, the rotor 2 is subjected to a leftward force. The force is transmitted to the main shaft 1 through the elastic body 4, the rotor thrust plate 3 and the first thrust washer assembly 5 in sequence, so as to realize the leftward movement of the ship, that is, to realize the leftward movement of the ship. Reverse; when the rotor 2 drives the propeller to rotate forward, the thrust generated by the propeller is to the right, that is, the rotor 2 is subjected to a force acting to the right, and the force is transmitted to the main shaft 1 through the elastomer 4, the rotor thrust plate 3 and the second thrust pad assembly 6 in sequence, so as to realize the ship's rightward movement, that is, to realize the ship's forward steering; when the propeller is subjected to the vibration impact of the fluid along the radial direction of the main shaft 1, the elastomer 4 close to the impact side is compressed by force. Since the elastomer 4 has a certain deformation capacity, it can achieve vibration reduction and buffering of the radial vibration impact, reduce the vibration of the rotor 2 and the main shaft 1, and improve the stability of the rim propulsion motor.

[0031] It should be noted that the first thrust pad assembly 5 is used to bear the thrust when reversing, and the second thrust pad assembly 6 is used to bear the thrust when forwarding, that is, the first thrust pad assembly 5 and the second thrust pad assembly 6 are used to bear the force along the axial direction of the main shaft 1; when the rotor 2 drives the rotor thrust plate 3 to rotate relative to the main shaft 1, the first thrust pad assembly 5 and the second thrust pad assembly 6 are lubricated with water, thereby reducing the sliding friction between the rotor thrust plate 3 and the main shaft 1; the above-mentioned directional words left and right are based on Figure 1 perspective.

[0032] In some embodiments, Figure 2 As shown, the elastic body 4 shown in this embodiment is annular, and a plurality of vibration-damping holes 41 are opened in the elastic body 4 along the axial direction of the main shaft 1 . There are a plurality of vibration-damping holes 41 , and the plurality of vibration-damping holes 41 are arranged along the circumferential direction of the elastic body 4 .

[0033] Specifically, by opening a plurality of vibration-damping holes 41 on the annular elastic body, the thickness of the elastic body 4 is reduced to a certain extent, so that the elastic body 4 has good deformation ability when subjected to radial impact, thereby achieving vibration reduction and buffering of radial impact through the deformation of the elastic body 4.

[0034] Among them, the size and number of the vibration-damping holes 41 need to be designed according to the actual stress conditions and the excitation characteristics of the rim propulsion motor. At the same time, after the vibration-damping holes 41 are opened, it is necessary to ensure that the elastomer 4 still has a certain structural strength to ensure that the elastomer 4 has good load-bearing performance, thereby ensuring the stability of the rotation of the rotor 2.

[0035] In some embodiments, Figure 1 As shown, the supporting device for the rim propulsion motor rotor shown in this embodiment also includes: a bearing assembly 8; the main shaft 1 is connected to the rotor thrust plate 3 through the bearing assembly 8.

[0036] Specifically, by arranging the bearing assembly 8 between the main shaft 1 and the rotor thrust plate 3 , the smoothness of the rotor 2 when driving the rotor thrust plate 3 to rotate is improved, and the sliding friction between the rotor thrust plate 3 and the main shaft 1 is also reduced.

[0037] In some embodiments, Figure 1 and Figure 3 As shown, the supporting device for the rim propulsion motor rotor shown in this embodiment also includes: a cover tube 9; the cover tube 9 is detachably connected to the first end face of the rotor thrust plate 3, and the outer wall of the cover tube 9 is connected to the elastomer 4; the bearing assembly 8 includes: a bearing sleeve 81 and a bearing bushing 82; the main shaft 1 is connected to the bearing sleeve 81, the bearing sleeve 81 is connected to the bearing bushing 82, and the bearing bushing 82 forms a preset gap with the inner wall of the cover tube 9.

[0038] Specifically, by arranging the bearing sleeve 81 and the bearing bushing 82 in the cover cylinder 9, the cover cylinder 9 can protect the bearing sleeve 81 and the bearing bushing 82; the preset gap between the bearing bushing 82 and the inner wall of the cover cylinder 9 is used to form a water film, and when the bearing bushing 82 and the cover cylinder 9 rotate relative to each other, the water film plays a lubricating role, thereby reducing the sliding friction between the bearing bushing 82 and the cover cylinder 9.

[0039] Among them, the cover cylinder 9 can be connected to the rotor thrust plate 3 by screws; when water lubrication is used between the bearing bushing 82 and the cover cylinder 9, the material of the bearing bushing 82 is preferably a polymer material such as PEEK, so as to enhance the water lubrication effect of the bearing bushing 82.

[0040] In some embodiments, Figure 1As shown, there are two bearing assemblies 8, which are arranged at intervals along the axial direction of the main shaft 1, one bearing assembly 8 is located in the stern cabin, and the other bearing assembly 8 is located in the bow cabin. A positioning sleeve 83 is provided between the bearing bushings 81 of the two bearing assemblies 8, thereby ensuring the relative distance between the two bearing assemblies 8, thereby improving the stability of the main shaft 1 support.

[0041] In some embodiments, Figure 1 As shown, the supporting device for the rim propulsion motor rotor shown in this embodiment also includes: a sealing ring 91 and a sealing cover 92; the rotor thrust plate 3 is arranged at one end close to the main shaft 1, and the end of the cover tube 9 facing away from the rotor thrust plate 3 is detachably connected to the sealing ring 91, and the inner wall of the sealing ring 91 is connected to the outer wall of the main shaft 1; the sealing cover 92 is detachably connected to the second end face of the rotor thrust plate 3.

[0042] Specifically, the bearing bushing 82 and the cover cylinder 9, the first thrust pad assembly 5 and the second thrust pad assembly 6 are all lubricated by water. In order to prevent the mud and sand in the water from affecting the lubrication performance, the cover cylinder 9 needs to be sealed. The sealing ring 91, the cover cylinder 9 and the sealing cover 92 form a relatively sealed cavity, wherein the sealing ring 91 is preferably a sand-proof ring, so that water can enter the cavity through the sand-proof ring to achieve water lubrication. At the same time, the mud and sand in the water can be filtered to prevent the mud and sand from entering the cavity.

[0043] The sealing ring 91 can be connected to the cover cylinder 9 by screws, and the sealing cover 92 can be connected to the rotor thrust plate 3 by screws.

[0044] In some embodiments, Figure 1 As shown, the first thrust washer assembly 5 shown in this embodiment includes: a first thrust washer 51 and a first thrust washer disc 52; the first thrust washer 51 is connected to the main shaft 1, and the first thrust washer disc 52 is connected to the first end face. The first thrust washer 51 and the first thrust washer disc 52 are arranged opposite to each other, and a preset gap is formed between the first thrust washer 51 and the first thrust washer disc 52.

[0045] Specifically, by setting a preset gap between the first thrust washer 51 and the first thrust disc 52, a water film can be formed between the first thrust washer 51 and the first thrust disc 52 to achieve water lubrication between the first thrust washer 51 and the first thrust disc 52, thereby reducing the sliding friction between the first thrust washer 51 and the first thrust disc 52 when the rotor 2 drives the first thrust washer 52 to rotate relative to the first thrust washer 51.

[0046] When water lubrication is used between the first thrust washer 51 and the first thrust washer disc 52 , the material of the first thrust washer 51 is preferably a polymer material such as PEEK, so as to enhance the water lubrication effect of the first thrust washer 51 .

[0047] In some embodiments, Figure 1 As shown, the first thrust washer assembly 5 shown in this embodiment also includes: a first thrust washer seat 53, the first thrust washer seat 53 is connected to the main shaft 1 and the first thrust washer 51 respectively, and the first thrust washer seat 53 is limited by the positioning clamp ring 11 on the main shaft 1.

[0048] In some embodiments, Figure 4 As shown, the first thrust pad 51 shown in this embodiment includes: a plurality of first thrust pads 511; the first thrust pad 511 is fan-shaped, and the plurality of first thrust pads 511 are evenly distributed around the center of the first thrust pad 511, and a first gap is formed between two adjacent first thrust pads 511.

[0049] Specifically, by configuring the first thrust washer 51 to be a plurality of first thrust washers 511 , with a first gap left between the plurality of first thrust washers 511 , when vibration is transmitted to the first thrust washer 51 , the first gap between two adjacent first thrust washers 511 can compensate for the vibration, thereby preventing the vibration from causing damage to the first thrust washer 51 .

[0050] In some embodiments, Figure 1 As shown, the second thrust washer assembly 6 shown in this embodiment includes: a second thrust washer 61 and a second thrust washer plate 62; the second thrust washer 61 is connected to the main shaft 1, the second thrust washer plate 62 is connected to the second end face, the second thrust washer 61 and the second thrust washer plate 62 are arranged opposite to each other, and a preset gap is formed between the second thrust washer 61 and the second thrust washer plate 62.

[0051] Specifically, by setting a preset gap between the second thrust washer 61 and the second thrust plate 62, a water film can be formed between the second thrust washer 61 and the second thrust plate 62 to achieve water lubrication between the second thrust washer 61 and the second thrust plate 62, thereby reducing the sliding friction between the second thrust washer 61 and the second thrust plate 62 in the process of the rotor 2 driving the second thrust washer 62 to rotate relative to the second thrust washer 61.

[0052] When water lubrication is used between the second thrust washer 61 and the second thrust washer plate 62 , the material of the second thrust washer 61 is preferably a polymer material such as PEEK, so as to enhance the water lubrication effect of the second thrust washer 61 .

[0053] In some embodiments, Figure 1 As shown, the second thrust washer assembly shown in this embodiment also includes: a second thrust washer seat 63 , the second thrust washer seat 63 is connected to the end surface of the main shaft 1 through screws, and the second thrust washer 61 is arranged on the second thrust washer seat 63 .

[0054] In some embodiments, Figure 5As shown, the second thrust pad 61 shown in this embodiment includes: a plurality of second thrust pads 611; the second thrust pad 611 is fan-shaped, and the plurality of second thrust pads 611 are evenly distributed around the center of the second thrust pad 611, and a second gap is formed between two adjacent second thrust pads 611.

[0055] Specifically, by configuring the second thrust washer 61 to be a plurality of second thrust washers 611 , with a second gap between the plurality of second thrust washers 611 , when vibration is transmitted to the second thrust washer 61 , the second gap between two adjacent second thrust washers 611 can compensate for the vibration, thereby preventing the vibration from causing damage to the second thrust washer 61 .

[0056] This embodiment also provides a ship propulsion system, comprising: a propeller and the supporting device for the rim propulsion motor rotor as described above; the propeller is connected to the rotor of the supporting device for the rim propulsion motor rotor.

[0057] Since the ship propulsion system adopts the supporting device for the rim propulsion motor rotor shown in the above-mentioned embodiment, the specific structure of the supporting device for the rim propulsion motor rotor refers to the above-mentioned embodiment. Since the ship propulsion system adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A support device for a rim-propelled motor rotor, characterized in that: include: Spindle; A rotor, the rotor being rotatably disposed on the main shaft; the rotor being used to be connected to the propeller; A rotor thrust plate, the rotor thrust plate being arranged between the rotor and the main shaft, the rotor thrust plate having a first end face and a second end face which are opposite to each other along the axial direction of the main shaft; An elastic body, wherein the elastic body is disposed between the rotor and the rotor thrust plate, and the elastic body is connected to the rotor and the rotor thrust plate respectively; a first thrust pad assembly, wherein the first end surface is connected to the main shaft through the first thrust pad assembly; a second thrust pad assembly, wherein the second end surface is connected to the main shaft through the second thrust pad assembly; The elastic body is annular, and a plurality of vibration-damping holes are opened on the elastic body along the axial direction of the main shaft. The plurality of vibration-damping holes are arranged along the circumference of the elastic body; The first thrust pad assembly comprises: a first thrust pad and a first thrust pad disc; The first thrust pad is connected to the main shaft, the first thrust pad disc is connected to the first end surface, the first thrust pad and the first thrust pad disc are arranged opposite to each other, and a preset gap is formed between the first thrust pad and the first thrust pad disc; The first thrust pad includes: a plurality of first thrust pads; The first thrust pad is in a fan-shaped ring, a plurality of the first thrust pads are evenly distributed around the center of the first thrust pad, and a first gap is formed between two adjacent first thrust pads; The second thrust pad assembly includes: a second thrust pad and a second thrust pad disc; The second thrust pad is connected to the main shaft, the second thrust pad disc is connected to the second end surface, the second thrust pad and the second thrust pad disc are arranged opposite to each other, and a preset gap is formed between the second thrust pad and the second thrust pad disc; The second thrust pad includes: a plurality of second thrust pads; The second thrust pad is in a fan-shaped ring, and a plurality of the second thrust pads are evenly distributed around the center of the second thrust pad, and a second gap is formed between two adjacent second thrust pads.

2. The support device for the rotor of a rim-propelled motor according to claim 1, characterized in that: The support device for the rim propulsion motor rotor also includes: a bearing assembly; The main shaft is connected to the rotor thrust plate through the bearing assembly.

3. The support device for the rotor of a rim-propelled motor according to claim 2, characterized in that: The support device for the rim propulsion motor rotor also includes: a cover cylinder; The cover cylinder is detachably connected to the first end surface of the rotor thrust plate; the outer side wall of the cover cylinder is connected to the elastic body; The bearing assembly comprises: a bearing bushing and a bearing bushing; The main shaft is connected to the bearing sleeve, the bearing sleeve is connected to the bearing bushing, and a preset gap is formed between the bearing bushing and the inner side wall of the cover cylinder.

4. The support device for the rotor of a rim-propelled motor according to claim 3, characterized in that: The support device for the rim propulsion motor rotor also includes: a sealing ring and a sealing cover; The rotor thrust plate is arranged near one end of the main shaft, the end of the cover tube away from the rotor thrust plate is detachably connected to the sealing ring, the inner wall of the sealing ring is connected to the outer wall of the main shaft; the sealing cover is detachably connected to the second end face.

5. A ship propulsion system, characterized in that: include: A propeller and a support device for a rotor of a rim propulsion motor as claimed in any one of claims 1 to 4; The propeller is connected to the rotor of the support device for the rotor of the rim propulsion motor.

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