A permanent magnet motor propulsion device for a pure electric tugboat with good waterproof effect

Abstract

The utility model discloses a permanent magnet motor propulsion device for a pure electric tugboat with good waterproof effect, comprising a main body shell, a connecting arm fixed on the main body shell, a rotating part connected to a flange on the connecting arm, a shroud installed on both sides of the main body shell, a rotor shell arranged on the inner side of the main body shell, a blade fixed on the inner side of the rotor shell, and a rotating shaft fixed in the middle of the blade. The permanent magnet motor propulsion device is provided with a stator protective cover at the connection between the main body shell and the shroud, and the stator protective cover is connected to the shroud and the coil base through a sealing gasket, which can effectively ensure the stability of the state of the sealed environment where the stator coil is located, and through the connection between the shroud and the stator protective cover, and the connection between the stator protective cover and the coil base, a double sealing effect can be formed, which effectively improves the waterproof effect of the permanent magnet motor propulsion device.

Description

Technical Field

[0001] The utility model relates to the technical field of tugboat propulsion devices, in particular to a permanent magnet motor propulsion device for a pure electric tugboat with good waterproof effect. Background Art

[0002] Tugboats, also known as tugboats, are mainly used to tow ships that are not self-propulsive or to rescue ships in distress at sea. The propulsion device of a tugboat is the part of the tugboat that provides thrust and power, which determines the maneuverability and operating capacity of the tugboat. Different types of tugboat propulsion devices are suitable for different operating environments and needs. The permanent magnet motor propulsion device is a device that uses permanent magnets to generate a magnetic field, drive the motor to rotate, and then propel the ship forward. It has the advantages of energy saving, environmental protection, low noise, and high efficiency, and is particularly suitable for offshore vessels, military ships, and various special-purpose ships.

[0003] Since traditional permanent magnet motor propulsion devices are mostly immersed in water together with the propeller, water will easily enter the propeller during long-term use, which will cause the permanent magnet motor propulsion device to fail to drive normally. Therefore, we propose a permanent magnet motor propulsion device for a pure electric tugboat with good waterproof effect to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a permanent magnet motor propulsion device for a pure electric tugboat with good waterproof effect, so as to solve the problem of poor waterproof effect of the current permanent magnet motor propulsion device proposed in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a permanent magnet motor propulsion device for a pure electric tugboat with good waterproof effect, comprising a main body shell, a connecting arm is fixed on the main body shell, a rotating part is flange-connected on the connecting arm, a fairing is installed on both sides of the main body shell, a rotor shell is arranged on the inner side of the main body shell, a blade is fixed on the inner side of the rotor shell, a rotating shaft is fixed at the middle position of the blade, a support assembly for supporting the blade is also fixed on the inner side of the fairing, and the support assembly is connected to both ends of the rotating shaft, a coil base is fixed inside the main body shell, a stator coil is installed on the coil base, a magnet seat is fixed inside the rotor shell, a permanent magnet is installed on the magnet seat, a stator protective cover is installed on the inner side of the main body shell, a magnet protective cover is arranged on the rotor shell, the stator protective cover and the magnet protective cover are located between the main body shell and the rotor shell, and a water-lubricated bearing is arranged between the stator protective cover and the magnet protective cover.

[0006] Preferably, the main body shell and the coil base are an integrated structure, and the air guide cover is installed on both sides of the coil base by fixing bolts.

[0007] Preferably, the stator shield is also fixed to the coil base by fixing bolts, and the fixing position of the stator shield is located between the air guide cover and the coil base, and a sealing gasket is provided at the connection between the stator shield, the air guide cover and the coil base.

[0008] Preferably, the support assembly includes a support rod, the support rod and the air deflector are an integrated structure, and the support rod and the rotating shaft are connected by a bearing.

[0009] Preferably, the stator protective cover is an inwardly concave arc-shaped structure, and the magnet protective cover on the rotor housing is an outwardly convex arc-shaped structure, and the shape of the magnet protective cover matches the shape of the stator protective cover.

[0010] Preferably, the stator coil is distributed in an arc shape on the inner side of the stator protective cover, and the permanent magnet is also distributed in an arc shape on the inner side of the magnet protective cover, and the positions of the stator coil and the permanent magnet correspond to each other.

[0011] Preferably, the water-lubricated bearings are distributed at equal intervals between the stator protection cover and the magnet protection cover, and the water-lubricated bearings are located on the sides of the relative positions of the stator coil and the permanent magnet.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The permanent magnet motor propulsion device is provided with a stator protective cover at the connection between the main body shell and the air deflector, and the stator protective cover is connected to the air deflector and the coil base through a sealing gasket, which can effectively ensure the stability of the state of the sealed environment in which the stator coil is located. Through the connection between the air deflector and the stator protective cover, and the connection between the stator protective cover and the coil base, a double sealing effect can be formed, which effectively improves the waterproof effect of the permanent magnet motor propulsion device;

[0014] (2) The rotor housing of the permanent magnet motor propulsion device is embedded and serially mounted in the main housing and is connected through water-lubricated bearings. The arc-shaped connection between the rotor housing and the main housing enables each water-lubricated bearing to bear forces in different directions and also limits the position of the rotor housing in different directions, thereby improving the stable rotation state of the rotor housing and ensuring the efficient rotation effect of the blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the side section structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the main housing and the rotor housing of the utility model.

[0019] In the figure: 1. Main body shell; 2. Connecting arm; 3. Rotating part; 4. Fairing; 5. Rotor shell; 6. Blade; 7. Support rod; 8. Rotating shaft; 9. Stator coil; 10. Permanent magnet; 11. Coil base; 12. Stator protective cover; 13. Water-lubricated bearing; 14. Magnet seat; 15. Fixing bolt; 16. Sealing gasket. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The utility model provides a technical solution: a permanent magnet motor propulsion device for a pure electric tugboat with good waterproof effect, comprising a main body shell 1, a connecting arm 2 is fixed on the main body shell 1, a rotating part 3 is flange-connected to the connecting arm 2, and a deflector 4 is installed on both sides of the main body shell 1.

[0022] A rotor housing 5 is provided on the inner side of the main shell 1, a blade 6 is fixed on the inner side of the rotor housing 5, a rotating shaft 8 is fixed at the middle position of the blade 6, and a supporting assembly for supporting the blade 6 is also fixed on the inner side of the fairing 4, and the supporting assembly is connected to both ends of the rotating shaft 8.

[0023] Furthermore, the support assembly includes a support rod 7, the support rod 7 and the air deflector 4 are an integrated structure, and the support rod 7 and the rotating shaft 8 are connected by a bearing for reinforcing the rotating shaft 8 to ensure the stable rotation state of the blade 6.

[0024] A coil base 11 is fixed inside the main housing 1 , and a stator coil 9 is mounted on the coil base 11 . A magnet base 14 is fixed inside the rotor housing 5 , and a permanent magnet 10 is mounted on the magnet base 14 .

[0025] Furthermore, the main housing 1 and the coil base 11 are an integrated structure, and the air deflector 4 is installed on both sides of the coil base 11 by fixing bolts 15, which is convenient for disassembly and assembly of the air deflector 4, and further convenient for renovation of the internal structure of the main housing 1.

[0026] Furthermore, the stator shield 12 is also fixed to the coil base 11 by fixing bolts 15, and the fixed position of the stator shield 12 is located between the air deflector 4 and the coil base 11. A sealing gasket 16 is provided at the connection between the stator shield 12, the air deflector 4 and the coil base 11, which can form a double connection position between the air deflector 4 and the coil base 11. The sealing gasket 16 at the connection forms a double sealing structure, which can effectively improve the waterproof effect between the air deflector 4 and the coil base 11.

[0027] A stator shield 12 is installed inside the main shell 1, a magnet shield is provided on the rotor shell 5, the stator shield 12 and the magnet shield are located between the main shell 1 and the rotor shell 5, and a water-lubricated bearing 13 is provided between the stator shield 12 and the magnet shield.

[0028] Furthermore, the stator protective cover 12 is a concave arc-shaped structure, and the magnet protective cover on the rotor housing 5 is a convex arc-shaped structure. The shape of the magnet protective cover matches the shape of the stator protective cover 12, which can play a preliminary limiting effect on the rotation activity of the rotor housing 5.

[0029] Furthermore, the stator coil 9 is distributed in an arc shape inside the stator protective cover 12, and the permanent magnet 10 is also distributed in an arc shape inside the magnet protective cover, and the positions of the stator coil 9 and the permanent magnet 10 correspond to each other, which can ensure that the generated magnetic field is more stable to achieve a better driving effect.

[0030] Furthermore, the water-lubricated bearings 13 are evenly spaced between the stator protective cover 12 and the magnet protective cover, and the water-lubricated bearings 13 are located on the side of the relative position of the stator coil 9 and the permanent magnet 10, so that the water-lubricated bearings 13 can work in different directions and withstand forces in different directions. It can also limit the position of the rotor housing 5 in different directions to ensure the stable working state of the rotor housing 5.

[0031] Specifically, when the permanent magnet motor propulsion device is used, first, the main housing 1 is installed on the rotating member 3 through a flange connection, and the stator coil 9 inside the main housing 1 passes through the connecting arm 2 and the rotating member 3 through a wire, and is electrically connected to the control system of the pure electric tugboat, so that the permanent magnet motor propulsion device can work normally;

[0032] When the stator coil 9 is energized, the stator coil 9 generates a magnetic field in turn to act on the aligned permanent magnets 10, so that the rotor housing 5 can rotate in the main housing 1, and then the blades 6 can rotate, providing power for the pure electric tugboat, so that the pure electric tugboat can travel and work. During the rotation of the rotor housing 5, since there is a water-lubricated bearing 13 between the stator protective cover 12 in the main housing 1 and the magnet protective cover outside the rotor housing 5, the water-lubricated bearing 13 can assist the rotation of the rotor housing 5, avoid the rotor housing 5 from being affected by friction resistance, and ensure the stable and efficient rotation state of the rotor housing 5;

[0033] When the permanent magnet motor propulsion device is working in water, a fairing 4 is installed on the main shell 1. If gaps appear at the interfaces after working for a long time, even if water leaks in from the interface on the outside of the fairing 4, the existence of the coil base 11 inside the main shell 1 can still prevent the water from directly contacting the stator coil 9. If water leaks in from the interface on the inside of the fairing 4, since the inside of the fairing 4 is in contact with the stator protective cover 12, and the stator protective cover 12 is in contact with the coil base 11, the water will still enter the space between the coil base 11 and the fairing 4 and will not directly contact the stator coil 9. In this way, the waterproof effect of the permanent magnet motor propulsion device can be effectively improved, and the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A permanent magnet motor propulsion device for a pure electric tugboat with good waterproof effect, comprising a main body shell (1), a connecting arm (2) fixed to the main body shell (1), a rotating member (3) flange-connected to the connecting arm (2), characterized in that: Air guide covers (4) are installed on both sides of the main body shell (1); A rotor housing (5) is arranged on the inner side of the main housing (1), a blade (6) is fixed on the inner side of the rotor housing (5), a rotating shaft (8) is fixed at the middle position of the blade (6), and a supporting assembly for supporting the blade (6) is also fixed on the inner side of the deflector (4), and the supporting assembly is connected to both ends of the rotating shaft (8); A coil base (11) is fixed inside the main housing (1), a stator coil (9) is mounted on the coil base (11), a magnet seat (14) is fixed inside the rotor housing (5), a permanent magnet (10) is mounted on the magnet seat (14); A stator protective cover (12) is installed inside the main housing (1), a magnet protective cover is provided on the rotor housing (5), the stator protective cover (12) and the magnet protective cover are located between the main housing (1) and the rotor housing (5), and a water-lubricated bearing (13) is provided between the stator protective cover (12) and the magnet protective cover.

2. A permanent magnet motor propulsion device for a pure electric tugboat with good waterproof effect according to claim 1, characterized in that: The main body shell (1) and the coil base (11) are an integrated structure, and the air guide cover (4) is mounted on both sides of the coil base (11) via fixing bolts (15).

3. A permanent magnet motor propulsion device for a pure electric tugboat with good waterproof effect according to claim 2, characterized in that: The stator shield (12) is also fixed to the coil base (11) by means of fixing bolts (15), and the fixing position of the stator shield (12) is located between the air guide cover (4) and the coil base (11), and a sealing gasket (16) is provided at the connection between the stator shield (12), the air guide cover (4) and the coil base (11).

4. A permanent magnet motor propulsion device for a pure electric tugboat with good waterproof effect according to claim 1, characterized in that: The support assembly comprises a support rod (7), the support rod (7) and the air deflector (4) are an integrated structure, and the support rod (7) and the rotating shaft (8) are connected by a bearing.

5. The permanent magnet motor propulsion device for a pure electric tugboat with good waterproof effect according to claim 1, characterized in that: The stator protection cover (12) is an inwardly concave arc-shaped structure, and the magnet protection cover on the rotor housing (5) is an outwardly convex arc-shaped structure. The shape of the magnet protection cover matches the shape of the stator protection cover (12).

6. A permanent magnet motor propulsion device for a pure electric tugboat with good waterproof effect according to claim 1, characterized in that: The stator coil (9) is distributed in an arc shape inside the stator protective cover (12), and the permanent magnet (10) is also distributed in an arc shape inside the magnet protective cover, and the positions of the stator coil (9) and the permanent magnet (10) correspond to each other.

7. A permanent magnet motor propulsion device for a pure electric tugboat with good waterproof effect according to claim 1, characterized in that: The water-lubricated bearings (13) are distributed at equal intervals between the stator protection cover (12) and the magnet protection cover, and the water-lubricated bearings (13) are located on the side of the relative positions of the stator coil (9) and the permanent magnet (10).

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