Marine small pod structure

Abstract

The utility model belongs to the field of pod propelling systems, and provides a marine small pod structure which comprises a motor, a speed reducer, a steering shaft, a steering shaft connecting piece, a check block, a limiting block, a lower shell and a propeller. The speed reducer is installed below the motor, the output end of the speed reducer and the steering shaft connecting piece are coaxially fixed, the steering shaft connecting piece and the steering shaft are coaxially fixed, the bottom end of the steering shaft penetrates through a bottom plate of a ship body and is coaxially fixed to the lower shell, a propelling motor is installed in the lower shell, and the propelling motor is installed in the lower shell. The propulsion motor is used for driving the propeller to rotate, the limiting block is installed on the steering shaft connecting piece, and the check block is installed on the speed reducer. The pod structure is easy and convenient to deploy, small and light, does not occupy extra space when installed at the bottom of a cabin, and can release more storage and in-cabin space. The limiting block and the check block are matched for mechanical limiting, the situation that the rotation amplitude is too large when the electric device is out of control can be prevented, debugging is convenient, and safety is improved.

Description

Technical Field

[0001] The utility model belongs to the field of podded propulsion systems, and particularly relates to a marine small pod structure. Background Art

[0002] The podded propulsion system is a new type of ship electric propulsion device developed in recent years and is a research focus in the field of ship propulsion systems. It mainly consists of a pod, a propeller, a slewing mechanism, etc. With the increasing requirements for ship energy conservation and emission reduction, the podded propulsion system has become a research hotspot in the domestic and foreign shipbuilding industries due to its incomparable advantages over conventional electric propulsion. It has also become increasingly popular in medium and small yachts and sailboats in recent years because it does not occupy cabin space.

[0003] The design inspiration of the podded propeller comes from icebreakers. ABB in Finland first proposed the concept of the podded propeller and began to be officially installed on ships in 1990. As early as the 1990s, foreign countries began to research podded propellers, while China is still in its infancy in this field and mostly relies on foreign products. China is a major shipbuilding and shipping country, and the development of podded electric propulsion technology is of great significance to the development of China's economy. Therefore, improving the independent research and development ability of podded electric propellers has become an urgent task in making up for weaknesses. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the utility model provides a marine small pod structure.

[0005] To achieve the above object, the utility model adopts the following technical solutions: A marine small pod structure includes a motor, a reducer, a steering shaft, a steering shaft connecting piece, a stop block, a limit block, a lower housing, and a propeller.

[0006] The motor is installed in the ship body, the reducer is installed below the motor, the power output end of the motor is coaxially fixed with the input end of the reducer, the output end of the reducer is coaxially fixed with the steering shaft connecting piece, the steering shaft connecting piece is coaxially fixed with the steering shaft, the lower housing is located below the ship body, the bottom end of the steering shaft passes through the ship bottom plate and is coaxially fixed with the lower housing, a propulsion motor is installed in the lower housing, the propeller is located outside the lower housing, the propulsion motor is used to drive the propeller to rotate, the limit block is installed on the steering shaft connecting piece, and the stop block is installed on the reducer.

[0007] Preferably, it further includes a motor connecting piece, and the reducer is installed on the motor through the motor connecting piece.

[0008] Preferably, the reducer is installed on the motor connecting piece through bolts, and the motor connecting piece is installed on the motor through bolts.

[0009] Preferably, it further includes a reducer snap ring, and the stopper is installed on the reducer through the reducer snap ring.

[0010] Preferably, the stopper is installed on the reducer snap ring through bolts, and the reducer snap ring is installed on the reducer through bolts.

[0011] Preferably, the limit block is installed on the steering shaft connecting member through bolts.

[0012] Preferably, it further includes a gasket and a compression flange. The compression flange is installed under the hull bottom plate. The gasket is clamped between the compression flange and the hull bottom plate. The bottom end of the steering shaft sequentially passes through the hull bottom plate, the gasket, the compression flange and is coaxially fixed with the lower housing.

[0013] Preferably, it further includes a transition housing. The top end of the transition housing is rotatably connected to the compression flange, and the bottom end of the transition housing is coaxially fixed to the lower housing.

[0014] Preferably, it further includes a motor drive board. The motor drive board is installed inside the lower housing and is electrically connected to the propulsion motor.

[0015] Preferably, the steering shaft is of a hollow structure.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. A marine small pod structure provided by the present utility model. This pod structure is deployed simply, small and light, and does not occupy additional space when installed at the bottom of the cabin, which can release more storage and cabin space. By setting the stopper and the limit block, mechanical limitation of the steering shaft connecting member can be achieved, and then rotational limitation of the steering shaft can be realized, preventing excessive rotation amplitude when the electrical components are out of control, which is convenient for debugging and improves safety.

[0018] 2. A marine small pod structure provided by the present utility model. The steering shaft is of a hollow structure, and the wiring can pass through the inside of the steering shaft, which is more space-saving and beautiful.

[0019] 3. A marine small pod structure provided by the present utility model. The motor drive board is built-in in the lower housing, which greatly improves the system redundancy.

[0020] 4. A marine small pod structure provided by the present utility model. The propulsion motor is arranged underwater to achieve the function of rapid heat dissipation. Using the natural water cooling heat dissipation technology can not only solve the motor heat dissipation problem, but also cancel the traditional heat dissipation pipeline arrangement, reduce the volume of the heat dissipation device, and make the overall structure arrangement simpler and more compact. Brief Description of the Drawings

[0021] Figure 1 Fig. 1 is a front view structural schematic diagram of a small marine pod structure provided by an embodiment of the present utility model;

[0022] Figure 2 Fig. 2 is a sectional view structural schematic diagram of a small marine pod structure provided by an embodiment of the present utility model;

[0023] Figure 3 Fig. 3 is a bottom view structural schematic diagram of a limiting block and its related parts of a small marine pod structure provided by an embodiment of the present utility model.

[0024] In the drawings, the list of components represented by each reference numeral is as follows:

[0025] 1. Motor; 2. Reducer; 3. Motor connecting piece; 4. Steering shaft; 5. Steering shaft connecting piece; 6. Sealing gasket; 7. Compression flange; 8. Transition housing; 9. Reducer snap ring; 10. Stop block; 11. Limiting block; 12. Lower housing; 13. Motor drive plate; 14. Propulsion motor; 15. Propeller; 16. Power harness; 17. Motor three-phase wire. Detailed Description of the Embodiment

[0026] The following further detailed description of the present utility model is provided in conjunction with specific embodiments, so that those skilled in the art can understand the present utility model more clearly.

[0027] It should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" in the claims should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral molding structure. For those of ordinary skill in the art, the specific meanings of such terms in this patent can be understood according to specific circumstances.

[0028] A small marine pod structure includes a motor 1, a reducer 2, a steering shaft 4, a steering shaft connecting piece 5, two stop blocks 10, a limiting block 11, a lower housing 12, and a propeller 15.

[0029] As shown in Figure 1 , the motor 1 is installed in the ship body through a bracket, the reducer 2 is installed below the motor 1, the power output end of the motor 1 is coaxially fixed to the input end of the reducer 2, the output end of the reducer 2 is coaxially fixed to the steering shaft connecting piece 5, and the steering shaft connecting piece 5 is coaxially fixed to the steering shaft 4. It can be understood that by rotating the power output end of the motor 1, the input end of the reducer 2 can be driven to rotate, the output end of the reducer 2 can be driven to rotate, the steering shaft connecting piece 5 can be driven to rotate, and further the steering shaft 4 can be driven to rotate.

[0030] The lower housing 12 is located below the hull. The bottom end of the steering shaft 4 passes through the hull bottom plate and is coaxially fixed to the lower housing 12. A propulsion motor 14 is installed inside the lower housing 12. The propeller 15 is located outside the lower housing 12. The power output end of the propulsion motor 14 is coaxially fixed to the propeller 15. It can be understood that when the steering shaft 4 rotates, it can drive the lower housing 12 to rotate synchronously.

[0031] As Figure 1 , 3 shown, the limit block 11 is installed on the steering shaft connecting member 5. Both of the two stop blocks 10 are installed on the speed reducer 2. The stop blocks 10 are located outside the steering shaft connecting member 5. The limit block 11 is located between the two stop blocks 10. During the rotation of the steering shaft connecting member 5, the limit block 11 will also rotate along with the steering shaft connecting member 5. And after rotating a certain angle, the limit block 11 will collide with the stop block 10. In this way, the stop block 10 can play a certain limiting role on the limit block 11. Among them, the included angle between the two stop blocks 10 can be adjusted as needed.

[0032] In summary, by driving the propeller 15 to rotate through the propulsion motor 14, the propulsion function can be realized. At the same time, by driving the steering shaft 4 to rotate through the motor 1, the lower housing 12 can be driven to rotate, so that the rotation of the pod can be realized. Moreover, the pod structure is simple to deploy, small and light, and does not occupy extra space when installed at the bottom of the cabin, and more storage and cabin space can be released. By setting the stop block 10 and the limit block 11, the mechanical limit of the steering shaft connecting member 5 can be realized, and further the rotation limit of the steering shaft 4 can be realized, preventing the rotation amplitude from being too large when the electrical components are out of control, facilitating debugging and improving safety.

[0033] The pod structure provided in this embodiment further includes a motor connecting member 3. The speed reducer 2 is installed on the motor 1 through the motor connecting member 3. The speed reducer 2 is installed on the motor connecting member 3 by bolts, and the motor connecting member 3 is installed on the motor 1 by bolts. The motor connecting member 3 is adapted to the motor 1 and the speed reducer 2, which is convenient for quick and stable installation.

[0034] The pod structure provided in this embodiment further includes a speed reducer retaining ring 9. The stop block 10 is installed on the speed reducer 2 through the speed reducer retaining ring 9. The stop block 10 is installed on the speed reducer retaining ring 9 by bolts, and the speed reducer retaining ring 9 is installed on the speed reducer 2 by bolts. The speed reducer retaining ring 9 is adapted to the speed reducer 2 and the stop block 10, which is convenient for quick and stable installation.

[0035] The limit block 11 is installed on the steering shaft connecting member 5 by bolts, facilitating timely disassembly or installation.

[0036] The pod structure provided in this embodiment further includes a gasket 6 and a compression flange 7. The compression flange 7 is installed under the hull bottom plate. The gasket 6 is clamped between the compression flange 7 and the hull bottom plate. The bottom end of the steering shaft 4 sequentially passes through the hull bottom plate, the gasket 6, the compression flange 7 and is coaxially fixed with the lower housing 12.

[0037] Among them, the hull bottom plate, the gasket 6, and the compression flange 7 are all provided with through holes adapted to the steering shaft 4 to facilitate the passing of the steering shaft 4. The gasket 6 can play a sealing role to prevent water leakage from the through hole of the hull bottom plate, and the compression flange 7 can play a role in pressing and protecting the gasket 6.

[0038] The pod structure provided in this embodiment further includes a transition housing 8. The transition housing 8 is sleeved outside the steering shaft 4. The top end of the transition housing 8 is rotatably connected to the compression flange 7, and the bottom end of the transition housing 8 is coaxially fixed with the lower housing 12. The transition housing 8 can play a role in support and connection.

[0039] As Figure 2 shown, the pod structure provided in this embodiment further includes a motor drive board 13. The motor drive board 13 is installed inside the lower housing 12. The motor drive board 13 is electrically connected to the propulsion motor 14 through motor three-phase wires 17, enabling automatic control of the propulsion motor 14. The motor drive board 13 is connected to the hull control room through a power harness 16, and can transmit control information to the motor drive board 13.

[0040] In this embodiment, the steering shaft 4 is of a hollow structure. Wiring can pass through the inside of the steering shaft 4, which is more space-saving and aesthetically pleasing.

[0041] In the present utility model, the mechanisms, components, and parts for which no specific structures are described are all existing structures that already exist in the prior art and can be directly purchased on the market.

[0042] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation to the present utility model. In addition, "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0043] The above is only a preferred embodiment of the present utility model and is not intended to limit the protection scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A small pod structure for a ship, characterized in that: It comprises a motor (1), a reducer (2), a steering shaft (4), a steering shaft connecting member (5), a stopper (10), a limit block (11), a lower housing (12), and a propeller (15); The motor (1) is installed in the hull, the reducer (2) is installed below the motor (1), the power output end of the motor (1) is coaxially fixed with the input end of the reducer (2), the output end of the reducer (2) is coaxially fixed with the steering shaft connecting member (5), the steering shaft connecting member (5) is coaxially fixed with the steering shaft (4), the lower shell (12) is located below the hull, the bottom end of the steering shaft (4) passes through the hull bottom plate and is coaxially fixed with the lower shell (12), a propulsion motor (14) is installed in the lower shell (12), the propeller (15) is located outside the lower shell (12), the propulsion motor (14) is used to drive the propeller (15) to rotate, the limit block (11) is installed on the steering shaft connecting member (5), and the stop block (10) is installed on the reducer (2).

2. A small pod structure for a ship according to claim 1, characterized in that: It also comprises a motor connecting piece (3), and the reducer (2) is mounted on the motor (1) via the motor connecting piece (3).

3. A small pod structure for a ship according to claim 2, characterized in that: The reducer (2) is mounted on the motor connecting member (3) by means of bolts, and the motor connecting member (3) is mounted on the motor (1) by means of bolts.

4. A small pod structure for a ship according to claim 1, characterized in that: It also comprises a reducer buckle ring (9), and the stopper (10) is installed on the reducer (2) through the reducer buckle ring (9).

5. A small pod structure for a ship according to claim 4, characterized in that: The stopper (10) is mounted on the reducer buckle (9) by means of bolts, and the reducer buckle (9) is mounted on the reducer (2) by means of bolts.

6. A small pod structure for a ship according to claim 1, characterized in that: The limit block (11) is mounted on the steering shaft connecting member (5) by means of bolts.

7. A small pod structure for a ship according to claim 1, characterized in that: It also includes a sealing gasket (6) and a clamping flange (7), wherein the clamping flange (7) is installed below the hull bottom plate, the sealing gasket (6) is clamped between the clamping flange (7) and the hull bottom plate, and the bottom end of the steering shaft (4) passes through the hull bottom plate, the sealing gasket (6), the clamping flange (7) and the lower shell (12) in sequence and is coaxially fixed.

8. A small pod structure for a ship according to claim 7, characterized in that: It also comprises a transition shell (8), the top end of the transition shell (8) is rotatably connected to the clamping flange (7), and the bottom end of the transition shell (8) is coaxially fixed to the lower shell (12).

9. A small pod structure for a ship according to claim 1, characterized in that: It also includes a motor drive board (13), which is installed inside the lower shell (12) and is electrically connected to the propulsion motor (14).

10. A small pod structure for a ship according to claim 1, characterized in that: The steering shaft (4) is a hollow structure.

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