Manual steering type electric propulsion stern outboard motor power system

Abstract

The utility model relates to the technical field of marine propellers, and discloses a manual steering type electric propulsion stern outboard motor power system which comprises a mounting frame, a steering mechanism, a propeller, a control system and a power source, the steering mechanism comprises a rudder plate, a rotating shaft, an operating rod and a rudder shaft, the rotating shaft is vertically mounted on the mounting frame and has rotational freedom, and the propeller is mounted on the rudder plate. The control system comprises a control circuit board, a frequency converter, a control panel and a speed regulation handle; the top of the propeller is connected to the rudder shaft, the control rod and the rudder shaft are hollow shafts, and a connecting line of the propeller penetrates through an inner cavity of the rudder shaft and then is connected to the frequency converter. A connecting wire of the power supply is connected to the control circuit board; the speed regulation handle, the control panel and the frequency converter are electrically connected with the control circuit board; the propeller is a rim type propeller. The utility model aims to provide the manual steering type electric propulsion stern outboard motor power system which is small in size, light in weight, high in propulsion efficiency and small in noise vibration.

Description

Technical Field

[0001] The utility model relates to the technical field of marine propellers, in particular to a manual steering type electric propulsion stern engine power system. Background Art

[0002] The stern motor (or outboard motor) is a ship propulsion device installed at the stern of a boat to provide thrust for the boat to travel. In the prior art, electric motors or diesel engines are mostly used as power sources. After being decelerated by a gear reduction device, the propeller is driven to rotate and generate thrust. The propeller is driven to rotate by gears and shafts, which has a complex structure, low transmission efficiency, large size, heavy weight, inconvenient installation and maintenance, and both diesel engine operation and gear meshing vibration will cause huge noise and vibration. Utility Model Content

[0003] The utility model aims to solve the above problems and provide a manual steering electric propulsion stern engine power system with small size, light weight, high propulsion efficiency and low noise and vibration.

[0004] In order to solve the above technical problems, the technical solution provided by the utility model is: a manually-steering electric propulsion stern engine power system, comprising a mounting frame for connecting and fixing with a ship, a steering mechanism for manual operation, a propeller installed at the bottom of the steering mechanism, a control system for controlling the speed and steering of the propeller, and a power supply for powering the control system and the propeller, the steering mechanism comprising a rudder plate, a rotating shaft parallel to and fixedly connected to the rudder plate, a joystick installed on the top of the rotating shaft, and a rudder shaft installed inside the rudder plate, at least one free end of the rotating shaft is vertically installed on the mounting frame and has a degree of freedom of rotation, the top of the propeller is connected to the rudder shaft, and the The joystick and the rudder shaft are both hollow shafts, and a accommodating cavity is provided in the rudder plate. The control system includes a control circuit board and a frequency converter arranged in the accommodating cavity, a control panel arranged on the top of the rudder plate, and a speed regulating handle installed at the free end of the joystick. A first wire passing hole is provided at the front end of the rudder plate, and the connecting wire of the power supply is connected to the control circuit board after passing through the first wire passing hole. The connecting wire of the speed regulating handle extends outward from the inner cavity of the joystick and passes through the first wire passing hole and is connected to the control circuit board. The control panel and the frequency converter are both electrically connected to the control circuit board. The connecting wire of the propeller is connected to the frequency converter after passing through the inner cavity of the rudder shaft. The propeller is a rim-type propeller.

[0005] As an improvement, a limiting groove is opened on the top of the rotating shaft, one end of the joystick is installed in the limiting groove, and a second wire passing hole is opened on the side wall of the limiting groove. The connecting wire of the speed regulating handle passes through the second wire passing hole and the first wire passing hole in turn and is connected to the control circuit board.

[0006] As an improvement, the propeller includes a casing, a rim-type permanent magnet motor installed in the casing, a propeller installed on the rotor of the rim-type permanent magnet motor, a bearing arranged between the end of the propeller and the casing, and a flange fixed on the top of the casing, wherein the flange is connected to the lower end of the rudder shaft and is watertightly connected.

[0007] As an improvement, the housing includes a casing for accommodating the rim-type permanent magnet motor, a front guide shell and a rear guide shell respectively installed at both ends of the casing, and the bearing is arranged between the rear guide shell and the end of the propeller.

[0008] As an improvement, the rear guide shell is provided with a hub and reinforcement ribs, there are three reinforcement ribs, two of which are symmetrically extended downward to the outer circumference of the casing and the height of the extended part close to the front guide shell is gradually narrowed, and the bottom of the extended part of the reinforcement rib is coplanar with the bottom of the casing.

[0009] As an improvement, a terminal socket is installed on the end face of the flange, the cable connection end of the rim-type permanent magnet motor is fixed on the terminal socket, the inverter is connected to a thruster connecting line, and the free end of the thruster connecting line is provided with a cable connector, which is plugged into the terminal socket to achieve electrical connection with the rim-type permanent magnet motor.

[0010] As an improvement, the flange is provided with an external thread, and the lower end of the rudder shaft is connected to the flange via an internal thread joint.

[0011] As an improvement, the power source is a battery pack, which includes a power battery and a battery management system. The battery pack can provide low-voltage direct current to the control system through DC / DC.

[0012] As an improvement, the power supply adopts a charging or battery replacement mode, and the power supply includes a lithium battery pack for conventional power supply and a small-capacity battery pack for emergency power supply, and the small-capacity battery pack is a lithium battery pack or a lead-acid battery pack.

[0013] As an improvement, the power supply is connected to the frequency converter and the propeller by a power cable, and the speed control handle, the frequency converter and the control circuit board are connected by a signal cable, and the communication method is RS485 or CAN communication.

[0014] Combined with the above technical solutions, compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model provides a manually-steering electric propulsion stern engine power system, which adopts a rim-type propeller as a power source, eliminates the transmission gear, and directly drives the propeller by the rim-type permanent magnet motor, and has the characteristics of high propulsion efficiency, low noise and vibration, high reliability, small size and light weight; the control system is dispersedly arranged on the rudder plate and the joystick, and the structural space of the stern engine itself is fully utilized. The connection line of the speed control handle is arranged inside the joystick, and the connection line of the propeller is arranged inside the rudder shaft, which can reduce the exposure of the connection line and avoid aging or damage caused by the exposure of the line. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a structural schematic diagram of a manual steering type electric propulsion stern engine power system.

[0017] Figure 2 It is a schematic diagram of the installation position of the frequency converter and the control circuit board described in the utility model.

[0018] Figure 3 It is a schematic diagram of the installation position of the wiring socket and the cable connector described in the utility model.

[0019] Figure 4 It is an exploded view of the propeller described in the utility model.

[0020] Among them: 1-steering mechanism, 11-rudder plate, 111-accommodation chamber, 112-first wire hole, 12-rotating shaft, 121-limiting groove, 122-second wire hole, 13-control lever, 14-rudder shaft, 2-thruster, 21-thruster connecting line, 22-rim permanent magnet motor, 221-stator, 222-rotor, 23-propeller, 24-flange, 25-housing, 251-casing, 252-lead Flow shell, 253-rear guide shell, 2531-reinforcement rib, 2532-wheel hub, 26-propeller hub, 27-bearing, 3-mounting frame, 4-power supply, 41-power connection line, 5-control system, 51-control panel, 52-control circuit board, 53-frequency converter, 531-thruster connection line, 54-speed control handle, 541-speed control handle connection line, 6-terminal seat, 7-cable connector, 8-threaded connector. DETAILED DESCRIPTION

[0021] In order to explain the technical features and the achieved purposes and effects of the present invention in detail, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] Please see attached Figure 1-4A manually-steering electric propulsion stern engine power system comprises a mounting frame 3 for being connected and fixed to a ship, a steering mechanism 1 for manual operation, a propeller 2 installed at the bottom of the steering mechanism 1, a control system 5 for controlling the speed and direction of the propeller 2, and a power supply 4 for powering the control system 5 and the propeller 2. The steering mechanism 1 comprises a rudder plate 11, a rotating shaft 12 which is parallel to and fixedly connected to the rudder plate 11, a joystick 13 installed at the top of the rotating shaft 12, and a rudder shaft 14 installed inside the rudder plate 11. At least one free end of the rotating shaft 12 is vertically mounted on the mounting frame 3 and has a rotational degree of freedom. The top of the propeller 2 is connected to the rudder shaft 14. The joystick 13 and the rudder shaft 14 are both hollow shafts. A containing cavity 111 is provided in the rudder plate 11. The control system 5 comprises a control A control circuit board 52 and a frequency converter 53, a control panel 51 arranged on the top of the rudder plate 11, and a speed control handle 54 installed at the free end of the joystick 13. The front end of the rudder plate 11 is provided with a first wire hole 112. The power supply 4 is connected to a power connection line 41, and the power connection line 41 passes through the first wire hole 112 and is connected to the control circuit board 52. The speed control handle 54 is connected to a speed control handle connection line 541, and the speed control handle connection line 541 extends outward from the inner cavity of the joystick 13 and passes through the first wire hole 112 and is connected to the control circuit board 52. The control panel 51 and the frequency converter 53 are both electrically connected to the control circuit board 52. The propeller 2 is connected to a propeller connection line 21, and the propeller connection line 21 passes through the inner cavity of the rudder shaft 14 and is connected to the frequency converter 53. The propeller 2 is a rim-type propeller.

[0023] In the above embodiment, the stern engine is installed at the stern of the ship through the mounting frame 3, and a rim-type propeller is used to provide propulsion power for the ship to sail. The motor and the propeller are integrated into one, the transmission gear is eliminated, and the transmission loss is reduced, so the volume of the propeller can be effectively reduced, the weight of the propeller can be reduced, the propulsion efficiency can be improved, and the noise and vibration generated during the propulsion process of the ship can be reduced. The speed control handle 54 is set on the joystick 13, so that the operator can complete the steering and speed adjustment at the same time through the joystick 13, so that the adjustment of the ship's heading and speed is more convenient and quick. Specifically, when the ship is sailing, the operator can swing the joystick 13 horizontally to make the joystick 13 drive the shaft 12 to rotate on the mounting frame 3, so that the entire steering mechanism 1 and the propeller 2 rotate together to change the propulsion direction of the propeller 2. If the propulsion speed of the propeller 2 needs to be changed, the operator can send a speed control signal to the control circuit board 52 by rotating the speed control handle 54. After receiving the speed control signal, the control circuit board 52 changes the current frequency and direction of the propeller 2 through the inverter 53, thereby changing the rotation speed and rotation direction of the propeller 2. The propeller connecting line 531 is arranged in the rudder shaft 14 and the speed control handle connecting line 541 is arranged in the joystick 13, which can avoid aging or damage caused by exposure of the line, and also make full use of the internal space of the rudder shaft 14 and the joystick 13 and reduce the weight of the rudder shaft 14 and the joystick 13.

[0024] Preferably, a limiting groove 121 is provided on the top of the rotating shaft 12, one end of the joystick 13 is installed in the limiting groove 13, a second wire hole 122 is provided on the side wall of the limiting groove 121, and the speed control handle connecting wire 541 passes through the second wire hole 122 and the first wire hole 112 in sequence and then is connected to the control circuit board 52.

[0025] In the above embodiment, the limiting groove 121 is used to limit the horizontal direction of the joystick 13, so that when the joystick 13 is moved horizontally, the rotating shaft 14 can be pushed to rotate through the side wall of the limiting groove 121.

[0026] Preferably, the propeller 1 includes a housing 25, a rim-type permanent magnet motor 22 installed in the housing 25, a propeller 23 installed on a rotor 222 of the rim-type permanent magnet motor 22, a bearing 27 arranged between the end of the propeller 23 and the housing 25, and a flange 24 fixed to the top of the housing 25, wherein the flange 24 is connected to the lower end of the rudder shaft 14 and is watertightly connected.

[0027] In the above embodiment, the rim-type permanent magnet motor 22 is integrated on the propeller 2, and the propulsion mode in which the rim-type permanent magnet motor 22 drives the propeller 23 to rotate can effectively reduce the volume and weight of the propeller 2, improve the space utilization and propulsion efficiency, and reduce the noise and vibration during the propulsion process of the ship. The flange 24 and the bottom of the rudder shaft 14 are watertightly connected, which can provide a sealed wire passing space for the connection terminal of the propeller connection line 21 and the rim-type permanent magnet motor 22.

[0028] Preferably, the housing 25 includes a casing 251 for accommodating the rim-type permanent magnet motor 22 , a front guide shell 252 and a rear guide shell 253 respectively installed at both ends of the casing 251 , and the bearing 27 is arranged between the rear guide shell 253 and the end of the propeller 23 .

[0029] In the above embodiment, the housing 25 is used to provide an installation space for the rim-type permanent magnet motor 22, and the front guide shell 252 and the rear guide shell 253 are used to axially fix the rim-type permanent magnet motor 22, the propeller 23 and the bearing 27. When the propeller 2 is working, the thrust generated by the rotation of the propeller 23 is axially transmitted to the bearing 27, and then transmitted to the housing 25 by the bearing 27 to provide thrust for the ship to sail.

[0030] Preferably, the rear guide shell 253 is provided with a hub 2532 and a reinforcing rib 2531. Exemplarily, there are three reinforcing ribs 2531, two of which extend obliquely downward to the outer circumference of the casing 251 symmetrically, and the height of the extended portion close to the front guide shell 252 gradually narrows, and the bottom of the extended portion of the reinforcing rib 2531 is coplanar with the bottom of the casing 251. Exemplarily, the reinforcing rib 2531 is connected to the hub 2532 and the casing 251 by welding.

[0031] In the above embodiment, the hub 2532 and the reinforcing ribs 2531 are provided on the rear guide shell 253 to increase the strength of the rear guide shell 253. The bottom of the extended portion of the reinforcing rib 2531 is coplanar with the bottom of the casing 251 to facilitate the storage and transportation of the propeller 2.

[0032] Preferably, a terminal socket 6 is installed on the end face of the flange 24, and the cable connection end of the rim-type permanent magnet motor 22 is fixed on the terminal socket 6. A propeller connecting line 531 is connected to the frequency converter 53, and a cable connector 7 is provided at the free end of the propeller connecting line 531. After the cable connector 7 is plugged into the terminal socket 6, it is electrically connected to the rim-type permanent magnet motor 22.

[0033] In the above embodiment, the cable connection end of the rim-type permanent magnet motor 22 and the thruster connection line 531 on the inverter 53 are connected and disconnected by plugging and unplugging the cable connector 7, so that the thruster 2 becomes an independent and detachable whole, which facilitates the maintenance and replacement of the thruster 2.

[0034] Preferably, the flange 24 is provided with an external thread, and the lower end of the rudder shaft 14 is connected to the flange 24 via an internal thread joint 8.

[0035] In the above embodiment, the threaded joint connection method can make the disassembly and assembly of the propeller 2 more convenient. At the same time, compared with the flange connection method, a smaller installation space is required, which can effectively reduce the size of the rudder plate 11, thereby reducing the water-facing area and reducing the resistance of the propeller when it is working.

[0036] Preferably, the power source 4 is a battery pack, which includes a power battery and a battery management system. The battery pack can provide low-voltage direct current to the control system 5 via DC / DC.

[0037] In the above embodiment, a battery pack with a battery management system (BMS) is used for power supply, which can effectively monitor the status of the battery, intelligently manage and maintain the battery cells, and extend the service life of the battery pack. The battery pack can provide low-voltage direct current to the control system 5 through DC / DC, so that the battery pack can simultaneously meet the power supply requirements of the thruster 2 and the low-voltage direct current requirements of the control system 5.

[0038] Preferably, the power source 4 adopts a charging or battery replacement mode, and the power source 4 includes a lithium battery pack for conventional power supply and a small-capacity battery pack for emergency power supply, and the small-capacity battery pack is a lithium battery pack or a lead-acid battery pack. Exemplarily, the power source 4 is provided with a charger for recharging the battery pack.

[0039] In the above embodiment, the small-capacity battery pack can provide emergency power supply to the control system 5 and the thruster 2 to ensure that the stern engine can operate normally during the power replacement process.

[0040] Preferably, the power supply 4 is connected to the frequency converter 53 and the propeller 2 by a power cable, and the speed control handle 54, the frequency converter 53 and the control circuit board 52 are connected by a signal cable. The speed control handle connecting line 541, the frequency converter 53 and the control circuit board 52 use RS485 or CAN communication interface, and the control circuit board 52 and the power supply 4 are both provided with RS485 serial port or CAN communication conversion module.

[0041] In the above embodiment, the power connection line 41 and the thruster connection line 21 use power cables to better meet the power supply requirements. The speed control handle connection line 541 and the connection line between the inverter 53 and the control circuit board 52 use signal cables to avoid signal interference. If the CAN communication method is used, the reliability and anti-interference ability of long-distance signal transmission can be improved.

[0042] It should be noted that the various embodiments in the present invention are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0043] The utility model and its implementation methods are described in detail above, and such description is not restrictive. The drawings show only some implementation methods of the utility model, and the actual structure is not limited thereto. Ordinary technicians in this field can be inspired by it and make various modifications, improvements and substitutions without departing from the concept of the utility model, which should all belong to the protection scope of the utility model.

Claims

1. A manually-steering electric propulsion stern engine power system, comprising a mounting frame, a steering mechanism, a propeller, a control system and a power supply, characterized in that: The steering mechanism comprises a rudder plate, a rotating shaft parallel to and fixedly connected to the rudder plate, a joystick mounted on the top of the rotating shaft, and a rudder shaft mounted inside the rudder plate, at least one free end of the rotating shaft is vertically mounted on a mounting frame and has a degree of rotational freedom, the top of the propeller is connected to the rudder shaft, a containing cavity is provided in the rudder plate, and both the joystick and the rudder shaft are hollow shafts; The control system includes a control circuit board and a frequency converter arranged in the accommodating cavity, a control panel arranged on the top of the rudder plate, and a speed regulating handle installed at the free end of the joystick. A first wire passing hole is opened at the front end of the rudder plate, and the connecting wire of the power supply passes through the first wire passing hole and is connected to the control circuit board. The connecting wire of the speed regulating handle extends outward from the inner cavity of the joystick and passes through the first wire passing hole and is connected to the control circuit board. The control panel and the frequency converter are both electrically connected to the control circuit board, and the connecting wire of the propeller passes through the inner cavity of the rudder shaft and is connected to the frequency converter; The propeller is a rim-type propeller.

2. The manually-steering electric propulsion stern engine power system according to claim 1, characterized in that: A limiting groove is provided on the top of the rotating shaft, one end of the joystick is installed in the limiting groove, a second wire passing hole is opened on the side wall of the limiting groove, and the connecting wire of the speed regulating handle passes through the second wire passing hole and the first wire passing hole in sequence and then is connected to the control circuit board.

3. The manually-steering electric propulsion stern engine power system according to claim 1, characterized in that: The propeller comprises a shell, a rim-type permanent magnet motor installed in the shell, a propeller installed on the rotor of the rim-type permanent magnet motor, a bearing arranged between the end of the propeller and the shell, and a flange fixed on the top of the shell, wherein the flange is connected to the lower end of the rudder shaft and is watertightly connected.

4. The manually-steering electric propulsion stern engine power system according to claim 3 is characterized by: The housing comprises a casing for accommodating a rim-type permanent magnet motor, a front guide casing and a rear guide casing respectively mounted at two ends of the casing, and the bearing is arranged between the rear guide casing and the end of the propeller.

5. The manually-steering electric propulsion stern engine power system according to claim 4 is characterized in that: The rear guide shell is provided with a hub and reinforcing ribs, there are three reinforcing ribs, two of which are symmetrical and extend obliquely downward to the outer circumference of the casing, and the height of the extended part close to the front guide shell gradually narrows, and the bottom of the extended part of the reinforcing rib is coplanar with the bottom of the casing.

6. The manually-steering electric propulsion stern engine power system according to claim 3 is characterized by: A terminal socket is installed on the end face of the flange, and the cable connection end of the rim-type permanent magnet motor is fixed on the terminal socket. A thruster connecting line is connected to the frequency converter, and a cable connector is provided at the free end of the thruster connecting line. After the cable connector is plugged into the terminal socket, it is electrically connected to the rim-type permanent magnet motor.

7. The manually-steering electric propulsion stern engine power system according to claim 3 is characterized by: The flange is provided with external threads, and the lower end of the rudder shaft is connected to the flange through an internal thread joint.

8. The manually-steering electric propulsion stern engine power system according to claim 1, characterized in that: The power source is a battery pack, which includes a power battery and a battery management system. The battery pack can provide low-voltage direct current to the control system through DC / DC.

9. The manually-steering electric propulsion stern engine power system according to claim 8, characterized in that: The power supply adopts a charging or battery replacement mode, and the power supply includes a lithium battery pack for conventional power supply and a small-capacity battery pack for emergency power supply. The small-capacity battery pack is a lithium battery pack or a lead-acid battery pack.

10. The manually-steering electric propulsion stern engine power system according to claim 1, characterized in that: The power supply is connected to the frequency converter and the propeller by a power cable, and the speed control handle, the frequency converter and the control circuit board are connected by a signal cable. The communication method is RS485 or CAN communication.

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