Pod propeller motor working cabin for ice region ship

Abstract

The utility model discloses an ice region ship pod propeller motor working bin, which comprises an outer shell and an inner shell, radial baffles are arranged on both sides in the outer shell, axial limiting components are arranged in the radial baffles, the inner shell is arranged between the two radial baffles, two symmetrically arranged motors are arranged in the inner shell, and the two motors are arranged in the inner shell. Output shafts of the motors face the corresponding radial baffles respectively, transmission parts are arranged on the output shafts of the motors, the transmission parts sequentially penetrate through the radial baffles and the outer shell, the moving ends of the axial limiting assemblies abut against the transmission parts, and the side wall of the inner shell is connected with the side wall of the outer shell. A radial limiting assembly capable of buffering impact force generated by the side wall of the outer shell on the motor is arranged between the side wall of the inner shell and the side wall of the outer shell. The device is provided with the axial limiting assembly, so that radial displacement generated by radial impact force can be prevented; the radial limiting assemblies can buffer most impact force on the side wall of the shell through magnetic pole repulsive force.

Description

Technical Field

[0001] This utility model belongs to the field of marine propeller technology, specifically relating to a working chamber for a marine podded propulsion motor in ice-covered areas. Background Technology

[0002] With the increasing demand for polar resource development and ice-covered shipping, podded propulsion systems for ice-covered vessels have become the mainstream power configuration for icebreakers and polar ships due to their advantages such as high maneuverability, high space utilization, and flexible operation. However, when navigating in ice-covered areas, podded propulsion systems are constantly immersed in waters with dense ice floes, and the motor casing must directly face the continuous impact and compression of floating ice and ice fragments. Especially when the ship is breaking ice or sailing at high speed, the dynamic impact load of the ice layer can reach several tons, placing stringent requirements on the protection of the motor.

[0003] Currently, protective designs for podded propulsion motors mainly focus on strengthening the outer shell material and reinforcing local structures. For example, high-strength steel or composite materials are used to increase the shell's hardness, or anti-collision ribs are welded to critical areas to disperse impact energy. However, existing technologies suffer from insufficient impact resistance and poor adaptability to dynamic loads. Static protection designs are ill-suited to handle the transient impacts of random ice collisions, easily leading to hidden damage such as stator eccentricity and permanent magnet demagnetization. Therefore, a working chamber for the motor of a marine podded propulsion system for ice-covered environments is proposed to address these issues. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to solve the problems in the prior art mentioned above, and to provide a working chamber for a marine pod propulsion motor in ice-covered areas, which can limit the motor axially and radially, improve the stability of the motor, and also play a role in shock absorption and buffering.

[0005] This utility model is achieved through the following technical solution:

[0006] A working chamber for a marine podded propulsion motor in ice-covered areas includes an outer shell and an inner shell. Radial baffles are provided on both sides of the inner shell, and axial limiting components are installed inside the radial baffles. The inner shell is positioned between the two radial baffles, and two symmetrically arranged motors are installed inside the inner shell. The output shafts of the motors face the corresponding radial baffles, and transmission components are installed on the output shafts of the motors. The transmission components pass sequentially through the radial baffles and the outer shell. The moving end of the axial limiting components abuts against the transmission components. The sidewall of the inner shell is connected to the sidewall of the outer shell, and a radial limiting component capable of buffering the impact force generated by the outer shell sidewall on the motor is provided between the sidewall of the inner shell and the sidewall of the outer shell.

[0007] To optimize the above technical solution, the specific measures also include:

[0008] Furthermore, the outer shell has a circular structure in the middle and a funnel-shaped structure at both ends. Through holes are provided at both ends of the outer shell, and the output shaft of the motor is inserted into the through holes.

[0009] Furthermore, the radial baffle has an insertion hole in the middle, and the radial baffle has several slides arranged circumferentially, all of which are connected to the insertion hole. The axial limiting component is respectively arranged in the several slides, and the axial limiting component can move within the slides.

[0010] Furthermore, the axial limiting assembly includes a limiting block and a limiting spring. The limiting block is slidably disposed within the slide rail, and the limiting spring is disposed between the limiting block and the slide rail. A sleeve is rotatably disposed on the transmission component near the limiting block.

[0011] Furthermore, a bearing is provided between the sleeve and the output shaft, and a groove is provided on the outer wall of the sleeve. The side of the limiting block away from the spring is located in the groove, and the limiting block abuts against the groove in the normal state.

[0012] Furthermore, the inner shell is a hollow cylindrical structure, and shaft holes are provided at both ends of the inner shell. The output shaft of the motor is inserted into the shaft holes. Reinforcing ribs are provided on both sides between the outer side wall of the inner shell and the inner side wall of the outer shell. The radial limiting component is disposed between the reinforcing ribs.

[0013] Furthermore, the transmission component includes a coupling and a transmission shaft. The coupling is mounted on the output shaft of the motor and connected to the transmission shaft. The coupling is located inside a through hole, and the end of the transmission shaft away from the coupling protrudes through the through hole. A propeller is mounted on the end of the transmission shaft away from the coupling.

[0014] Furthermore, the diameter of the through hole is larger than the diameter of the through hole and the shaft hole.

[0015] Furthermore, the radial limiting component includes a buffer cavity located between reinforcing ribs. The two ends of the buffer cavity abut against the inside of the outer shell and the outer wall of the inner shell, respectively. A first annular magnet and a second annular magnet are arranged sequentially from the inside to the outside within the buffer cavity. The magnetic poles of the first annular magnet and the second annular magnet are the same on the side that are close to each other. A buffer spring is arranged between the first annular magnet and the second annular magnet.

[0016] Furthermore, the inner shell includes an inner layer and an outer layer, with a gap between the inner and outer layers. Several heat dissipation holes are staggered on the sidewalls of the inner and outer layers, and the motor is located inside the inner layer.

[0017] The beneficial effects of this utility model are:

[0018] This device is equipped with an axial limiting component, which can prevent the propeller from radially displacing due to the impact force generated when the propeller cuts with the ice. At the same time, the axial limiting component can also convert part of the impact force on the outer wall of the outer shell into a fastening force on the transmission components. Furthermore, when the motor is running or subjected to external impact, the axial limiting component can axially compress and absorb vibration energy, providing radial constraint and achieving a two-way buffering effect, which significantly improves the stability of the motor in complex icy waters.

[0019] Meanwhile, the radial limiting component of this device can buffer most of the impact force against the side wall of the outer shell through magnetic pole repulsion. In addition, the multi-layer shell structure can minimize the impact of external impact force on the motor. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a ship propeller with detachable blades as shown in Embodiment 1 of this utility model.

[0021] Figure 2 yes Figure 1 A schematic diagram of the internal structure of the device.

[0022] Figure 3 yes Figure 2 A sectional view.

[0023] Figure 4 yes Figure 2 A partial structural diagram.

[0024] Figure 5 This is a sectional view of the radial baffle.

[0025] The attached figures are labeled as follows: outer shell 10, through hole 11, radial baffle 20, insertion hole 21, slide 22, axial limiting assembly 30, limiting block 31, limiting spring 32, inner shell 40, inner layer 41, outer layer 42, heat dissipation hole 43, shaft hole 44, reinforcing rib 45, motor 50, transmission component 60, coupling 61, transmission shaft 62, sleeve 70, groove 71, radial limiting assembly 80, buffer cavity 81, first annular magnet 82, second annular magnet 83, buffer spring 84, propeller 90. Detailed Implementation

[0026] To clarify the technical solution and working principle of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present utility model. Therefore, the present utility model is not limited to the specific embodiments disclosed below.

[0027] like Figure 1-5 As shown, this embodiment discloses a working compartment for a marine podded propulsion motor 50 in ice-covered areas, which is mounted on a vessel navigating in polar regions. The working compartment houses the motor 50 and a transmission component 60, which extends out of the working compartment. A propeller 90 is positioned outside the transmission component 60. During operation, the propeller 90 encounters a large amount of floating ice, easily generating cutting resistance. The working compartment includes an outer shell 10 and an inner shell 40. An axial limiting component 30 and a radial limiting component 80 are provided between the outer shell 10 and the inner shell 40. The axial limiting component 30 restricts the radial displacement of the transmission component 60, and the radial limiting component 80 mitigates the impact of ice on the sidewalls of the outer shell 10, protecting the motor 50.

[0028] Radial baffles 20 are provided on both sides of the inner shell 10. An axial limiting component 30 is provided inside the radial baffles 20. The inner shell 40 is located between the two radial baffles 20. Two symmetrically arranged motors 50 are provided inside the inner shell 40. The output shafts of the motors 50 are respectively facing the corresponding radial baffles 20. A transmission component 60 is provided on the output shaft of the motors 50. The transmission component 60 passes through the radial baffles 20 and the outer shell 10 in sequence. The moving end of the axial limiting component 30 abuts against the transmission component 60. The side wall of the inner shell 40 is connected to the side wall of the outer shell 10. A radial limiting component 80 is provided between the side wall of the inner shell 40 and the side wall of the outer shell 10 to buffer the impact force generated by the side wall of the outer shell 10 on the motors 50.

[0029] The outer casing 10 has a circular structure in the middle and funnel-shaped structures at both ends, with through holes 11 at both ends. Radial baffles 20 are provided on both sides inside the outer casing 10, and axial limiting components 30 are provided inside the radial baffles 20. The radial baffles 20 are perpendicular to the axis of the outer casing 10, and have through holes 21 in the middle. Several slides 22 are arranged circumferentially around the radial baffles 20, all of which communicate with the through holes 21. The axial limiting components 30 are respectively disposed within the slides 22 and are movable within the slides 22.

[0030] The axial limiting assembly 30 includes a limiting block 31 and a limiting spring 32. The limiting block 31 is slidably disposed within a slide rail 22, and the limiting spring 32 is disposed between the limiting block 31 and the slide rail 22. A sleeve 70 is rotatably disposed on the transmission member 60 near the limiting block 31. A bearing is disposed between the sleeve 70 and the transmission member 60. A groove 71 is provided on the outer wall of the sleeve 70. The side of the limiting block 31 away from the limiting spring 32 is disposed within the groove 71, and the limiting block 31 rests against the groove 71 in the normal state. That is, the limiting spring 32 initially keeps the limiting block 31 pressed against the transmission member 60. When the transmission member 60 has a tendency to deviate in a certain radial direction, the limiting block 31 in the corresponding direction will be compressed, and the spring force will cancel out the corresponding compressive force, maintaining the axial stability of the transmission member 60.

[0031] The transmission component 60 includes a coupling 61 and a transmission shaft 62. The coupling 61 is mounted on the output shaft of the motor 50 and is connected to the transmission shaft 62. The coupling 61 is located inside the through hole 21, and the end of the transmission shaft 62 away from the coupling 61 passes through the through hole 11.

[0032] The inner shell 40 includes an inner layer 41 and an outer layer 42, with a gap between them. Several heat dissipation holes 43 are staggered on the sidewalls of the inner and outer layers 41 and 42. The motor 50 is located inside the inner layer 41. The inner shell 40 is a hollow cylindrical structure with shaft holes 44 at both ends. The output shaft of the motor 50 passes through the shaft holes 44. Reinforcing ribs 45 are provided on both sides between the outer sidewall of the inner shell 40 and the inner sidewall of the outer shell 10. A radial limiting component 80 is located between the reinforcing ribs 45. The diameter of the through hole 21 is larger than the diameter of the through hole 11 and the shaft hole 44.

[0033] The connection and fit relationship between the transmission component 60 and the output shaft of the motor 50 is as follows:

[0034] The output shaft of motor 50 passes through the shaft hole 44 of inner housing 40. The size of shaft hole 44 matches the output shaft of motor 50. Coupling 61 is installed on the output shaft of motor 50. Coupling 61 is located in through hole 21. The size of coupling 61 matches the size of through hole 21. The end of coupling 61 away from the output shaft of motor 50 is connected to drive shaft 62. Drive shaft 62 passes through through hole 11.

[0035] When the drive shaft 62 encounters a large instantaneous axial impact force, the drive shaft 62 will move towards the motor 50, and then push the coupling 61 to move towards the motor 50. Then the coupling 61 will move close to the side wall of the inner shell 40. At this time, the inner shell 40 can buffer the impact force and reduce the impact force on the motor 50.

[0036] The radial limiting assembly 80 includes a buffer cavity 81. The two ends of the buffer cavity 81 abut against the inside of the outer shell 10 and the outer wall of the inner shell 40, respectively. A first annular magnet 82 and a second annular magnet 83 are arranged in sequence from the inside to the outside of the buffer cavity 81. The magnetic poles of the first annular magnet 82 and the second annular magnet 83 are the same on the side that are close to each other. A buffer spring 84 is arranged between the first annular magnet 82 and the second annular magnet 83.

[0037] The shock absorption principle of the radial limiting component 80 is as follows:

[0038] When the side wall of the working chamber is hit by ice, the side wall of the outer shell 10 will be squeezed by the impact force, and then the second annular magnet 83 will be squeezed towards the first annular magnet 82. At this time, since the magnetic poles of the first annular magnet 82 and the second annular magnet 83 are the same, a mutual repulsive force is generated between the first annular magnet 82 and the second annular magnet 83. The mutual repulsive force between the annular magnets will offset the impact force and reduce the damage of the impact force to the motor 50.

[0039] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within the protection scope of this application. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of this application should be considered within the protection scope of this application.

Claims

1. An ice class podded propulsor motor working enclosure, characterized by: The shell and the inner shell are provided with radial baffles on both sides of the shell, the axial limiting assembly is arranged inside the radial baffles, the inner shell is arranged between the two radial baffles, the inner shell is provided with two symmetrical motors, the output shafts of the motors are respectively directed to the corresponding radial baffles, the transmission member is arranged on the output shaft of the motor, the transmission member sequentially penetrates the radial baffles and the shell, the moving end of the axial limiting assembly abuts against the transmission member, the inner shell side wall is connected with the shell side wall, and the radial limiting assembly is arranged between the inner shell side wall and the shell side wall and can buffer the impact force of the shell side wall on the motor.

2. An ice class podded propeller electric machine working chamber according to claim 1, characterized in that: The middle of the shell is in a circular structure, the two ends of the shell are in a funnel structure, and the two ends of the shell are provided with through holes.

3. An ice class podded propeller electric machine working chamber according to claim 2, characterized in that: The radial baffles are provided with a plurality of slides in a circumferential direction, the plurality of slides are in communication with the penetrating hole, and the axial limiting assembly is arranged in the plurality of slides.

4. An ice class podded propulsor motor operating room according to claim 3, characterized in that: The axial limiting assembly comprises a limiting block and a limiting spring, the limiting block is slidably arranged in the slide, the limiting spring is arranged between the limiting block and the slide, and a sleeve is rotatably arranged on the transmission member close to the limiting block.

5. An ice class podded propeller electric machine working chamber according to claim 4, characterized in that: A bearing is arranged between the sleeve and the transmission member, a groove is arranged on the outer side wall of the sleeve, the side of the limiting block away from the spring is arranged in the groove, and the limiting block abuts against the groove in a normal state.

6. An ice class podded propulsor motor operating room according to claim 5, characterized in that: The inner shell is in a hollow cylindrical structure, the inner shell is provided with shaft holes at both ends, the output shaft of the motor penetrates the shaft hole, reinforcing ribs are arranged between the inner shell outer side wall and the shell inner side wall, and the radial limiting assembly is arranged between the reinforcing ribs.

7. An ice class podded propeller electric machine working chamber according to claim 6, characterized in that: The transmission member comprises a shaft coupling and a transmission shaft, the shaft coupling is arranged on the output shaft of the motor, the shaft coupling is connected with the transmission shaft, the shaft coupling is located in the penetrating hole, one end of the transmission shaft away from the shaft coupling penetrates the through hole, and the one end of the transmission shaft away from the shaft coupling is provided with a propeller.

8. An ice class podded propulsor motor operating room according to claim 7, characterized in that: The diameter of the penetrating hole is greater than that of the through hole and the shaft hole.

9. An ice class podded propulsor motor operating room according to claim 6, characterized in that: The radial limiting assembly comprises a buffer cavity, the buffer cavity is located between the reinforcing ribs, the two ends of the buffer cavity abut against the inner shell and the outer shell respectively, the buffer cavity is provided with a first annular magnet and a second annular magnet arranged in the buffer cavity from inside to outside, the magnetic poles of the first annular magnet and the second annular magnet on the side close to each other are the same, and the buffer spring is arranged between the first annular magnet and the second annular magnet.

10. An ice class podded propulsor motor operating room according to claim 9, characterized in that: The inner shell comprises an inner layer and an outer layer, a gap is arranged between the inner layer and the outer layer, a plurality of heat dissipation holes are arranged on the side walls of the inner layer and the outer layer in a staggered manner, and the motor is arranged in the inner layer.

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