Double closed loop electric drive fin stabilizer with emergency reset function

Abstract

The present invention relates to a double closed-loop electric-driven anti-roll fin with an emergency reset function. The servo motor is connected to a fin angle transmitter via a planetary gear reducer installed on a support seat, and the torque output end of the planetary gear reducer is connected to the fin shaft. The servo motor has an encoder, and the fin angle transmitter is provided with an angle sensor. The encoder and the angle sensor are connected to the servo motor via an electric control system. The electric control system outputs a control signal to drive the servo motor and the planetary gear reducer to output torque, thereby driving the fin shaft to make the fin swing up and down, and realizes double closed-loop control through the angle signal fed back by the encoder and the fin angle sensor. The present invention can realize double closed-loop angle control, which can greatly improve the control efficiency; at the same time, the double closed-loops are mutually redundant in safety design, which improves the system reliability; it has a mechanical fin angle indication and a manual reset function, which can ensure that the device can return to zero position when the electrical system is damaged or the power is off, and comprehensively improve the system stability and reliability of the electric-driven anti-roll fin.

Description

Technical Field

[0001] The invention relates to a device for reducing the rolling motion of a boat, in particular to an electric-driven anti-roll fin. Background Art

[0002] There are many electric-driven fin stabilizers abroad, but there are no mature products in China. However, generally, angle closed-loop control is achieved only through the encoder provided by the servo motor. Due to the integrated connection characteristics of the motor reducer, it is difficult to arrange the angle sensor at the appropriate position, and a more stable angle dual closed-loop control cannot be formed. There is no design margin for safety, and there is a lack of mechanical fin angle indication, which is not conducive to debugging and use. Moreover, when the entire ship loses power in an emergency, the electric-driven fin stabilizer will lock itself at the operating angle due to the brake characteristics of its servo motor, affecting the towing movement of the ship, and an additional manual device is required to unlock and reset it to zero. Summary of the invention

[0003] In order to overcome the problem that the existing electric-driven fin stabilizers cannot achieve dual closed-loop control and emergency zeroing functions, the present invention proposes a new electric-driven fin stabilizer device, which drives a planetary gear reducer with a large transmission ratio through a servo motor to generate a large fin rotation torque, and drives the fin to swing rapidly and at a large angle through the fin shaft to achieve roll reduction; utilizes the customized interface of the planetary gear reducer, installs a special fin angle transmitter, and leads the movement of the reducer to the angle sensor through the customized transmission mechanism in the fin angle transmitter, and at the same time arranges a manual fin rotation interface at the transmission mechanism, so that the electric-driven fin stabilizer has the emergency zeroing function.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: a double closed-loop electric-driven anti-roll fin with emergency reset function, comprising a fin shaft group, a support seat, a planetary gear reducer, a fin angle transmitter, and a servo motor, wherein the servo motor is connected to the fin angle transmitter via a planetary gear reducer installed on the support seat, and the torque output end of the planetary gear reducer is connected to the fin shaft; the servo motor has its own encoder, and the fin angle transmitter is provided with an angle sensor, the encoder and the angle sensor are connected to the servo motor through an electronic control system, and the electronic control system outputs a control signal to drive the servo motor and the planetary gear reducer to output torque, thereby driving the fin shaft to make the fin swing up and down, and realizing double closed-loop control through the angle signal fed back by the encoder of the servo motor and the angle sensor on the fin angle transmitter; a manual fin shaft for emergency reset of the fin shaft is provided at the tail of the fin angle transmitter.

[0005] Furthermore, the fin angle transmitter includes a driven shaft, a driving shaft, a planetary gear reducer customized interface, an angle sensor, and a worm gear reducer. The planetary gear reducer is connected to the driving shaft through the planetary gear reducer customized interface, the driving shaft is connected to the driven shaft through a transmission mechanism, the driven shaft is connected to the input end of the worm gear reducer, and one output end of the worm gear reducer is connected to the angle sensor.

[0006] Furthermore, another output end of the worm gear reducer is connected to a fin angle meter for displaying the fin angle in real time.

[0007] Furthermore, the transmission ratio between the output end of the worm gear reducer and the output end of the planetary gear reducer is:.

[0008] Furthermore, the transmission mechanism is composed of a driven wheel and a synchronous belt, and the driving shaft is connected to the driven shaft through the synchronous belt and the driven wheel.

[0009] Furthermore, the customized interface of the planetary gear reducer and the torque output end of the planetary gear reducer are synchronously driven, and there is a transmission ratio between the customized interface of the planetary gear reducer and the torque output end of the planetary gear reducer.

[0010] The beneficial effects of the present invention are:

[0011] The present invention is based on the lightweight integration of electric-driven fin stabilizers and can realize dual closed-loop angle control, which can greatly improve the control efficiency. At the same time, the dual closed-loops are designed for mutual safety redundancy, which improves the system reliability. The invention has mechanical fin angle indication and manual zeroing function, which can ensure that the device can return to zero position when the electrical system is damaged or power is lost, thereby comprehensively improving the system stability and reliability of the electric-driven fin stabilizers.

[0012] The present invention utilizes a customized interface with components on the basis of an electric-driven fin stabilizer and designs a special fin angle transmitter so that the electric-driven fin stabilizer has double closed-loop control and emergency zeroing functions, thereby increasing the reliability and stability of the electric-driven fin stabilizer system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the electric-driven fin stabilizer structure of the present invention;

[0014] Figure 2 It is a schematic diagram of the fin angle transmitter structure. DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] like Figure 1As shown, the electric-driven anti-roll fin of the present invention is mainly composed of a fin shaft group 11, a support seat 12, a planetary gear reducer 13, a fin angle transmitter 14, a servo motor 15, etc. The servo motor 15 is connected to the fin angle transmitter 14 through the planetary gear reducer 13 installed on the support seat 12, and the torque output end of the planetary gear reducer 13 is connected to the fin shaft. The servo motor 15 has an encoder, and the fin angle transmitter 14 is provided with an angle sensor. The encoder and the angle sensor are connected to the servo motor 15 through the electronic control system. The electronic control system outputs a control signal to drive the servo motor 15 and the planetary gear reducer 13 to output torque, thereby driving the fin shaft to swing up and down, and realizes double closed-loop control through the encoder of the servo motor 15 and the angle signal fed back by the angle sensor on the fin angle transmitter 14. A manual fin rotation shaft is arranged at the tail of the fin angle transmitter 14, and the emergency reset function in the power-off state is realized through the manual fin rotation shaft at the tail of the fin angle transmitter.

[0017] In order to realize the dual closed loop and emergency reset function of the electric drive fin stabilizer, it is necessary to use the customized interface at the tail of the planetary gear reducer, lead the rotational motion from the interface, and realize the dual closed loop and emergency reset function through a special fin angle transmitter.

[0018] like Figure 2 As shown, the fin angle transmitter 14 is mainly composed of a driven wheel 1, a driven shaft 2, a synchronous belt 3, a protective cover 4, a driving shaft 5, a planetary gear reducer customized interface 6, an angle sensor 7, a worm gear reducer 8, and a fin angle meter 9. The planetary gear reducer 13 is connected to the driving shaft 5 through the planetary gear reducer customized interface 6, the driving shaft 5 is connected to the driven shaft 2 through the synchronous belt 3 and the driven wheel 1, the driven shaft 2 is connected to the input end of the worm gear reducer 8, one output end of the worm gear reducer 8 is connected to the fin angle meter 9, and the other output end is connected to the angle sensor 7.

[0019] When the servo motor 15 drives the planetary reducer 13 to operate, the planetary reducer customized interface 6 and the torque output end of the planetary reducer 13 are synchronously driven, but there is a certain transmission ratio. The motion is led out through the driving shaft 5, and the motion is transmitted to the output end of the worm reducer 8 through the synchronous belt 3, the driven shaft 2, the driven wheel 1, and the worm reducer 8. By adjusting the transmission ratio of the internal transmission mechanism, the transmission ratio between the output end of the worm reducer 8 and the output end of the planetary reducer is 1:1, and the fin angle is displayed in real time through the fin angle meter 9. The electric drive fin stabilizer double closed-loop control is realized through the angle sensor 7 and the encoder on the servo motor 15.

[0020] When the entire ship loses power, the servo motor brake loses power and is locked. At this time, the brake can be unlocked by emergency DC power, the protective cover 2 is opened, and the driving shaft 5 is rotated by a special manual fin rotation tool. The fin is reset to zero according to the mechanical angle displayed in real time on the fin angle meter 9.

Claims

1. A double closed loop electric drive fin stabilizer with emergency reset function, comprising a fin shaft assembly, a support seat, a planetary gear reducer, a fin angle transmitter, and a servo motor, characterized in that: The servo motor is connected to the fin angle transmitter via a planetary gear reducer installed on the support seat, and the torque output end of the planetary gear reducer is connected to the fin shaft; the servo motor has its own encoder, and the fin angle transmitter is provided with an angle sensor, and the encoder and the angle sensor are connected to the servo motor via an electronic control system, and the electronic control system outputs a control signal to drive the servo motor and the planetary gear reducer to output torque, thereby driving the fin shaft to make the fin swing up and down, and realizes double closed-loop control through the angle signal fed back by the servo motor's own encoder and the angle sensor on the fin angle transmitter; a manual fin shaft for emergency zeroing of the fin shaft is provided at the tail of the fin angle transmitter; the fin angle transmitter includes a driven shaft, a driving shaft, a planetary gear reducer custom interface, an angle sensor, a worm gear reducer, and the The planetary reducer is connected to the driving shaft through the customized interface of the planetary reducer, the driving shaft is connected to the driven shaft through a transmission mechanism, the driven shaft is connected to the input end of the turbine-worm reducer, and one output end of the turbine-worm reducer is connected to an angle sensor; the other output end of the turbine-worm reducer is connected to a fin angle meter for real-time display of the fin angle; the transmission ratio between the output end of the turbine-worm reducer and the output end of the planetary reducer is 1:1; the transmission mechanism is composed of a driven wheel and a synchronous belt, and the driving shaft is connected to the driven shaft through a synchronous belt and a driven wheel; the customized interface of the planetary reducer and the torque output end of the planetary reducer are synchronously driven, and there is a transmission ratio between the customized interface of the planetary reducer and the torque output end of the planetary reducer.

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