Rudder angle feedback unit of full-revolving thruster and full-revolving thruster

Abstract

The invention belongs to the field of full-revolving propellers, and discloses a rudder angle feedback unit of a full-revolving propeller, which comprises a feedback gear set provided with an input end and an output end, the input end is in transmission connection with a steering gear in a lower gear box of the full-revolving propeller, and the output end is connected with an indicating component for indicating the actual rudder angle of the full-revolving propeller; the sensor is connected with the feedback gear set, converts an angle value of mechanical rotation into an electric signal and outputs the electric signal to the steering control system and the dial gauge, so that the functions of steering angle indication and electric signal conversion are realized; the detection and calibration component is electrically connected with a steering control system of the full-revolving propeller and used for adjusting zero calibration of the sensor and zero adjustment of the pointer, signals of the detection and calibration component are output to the steering control system, and the steering control system judges whether the sensor breaks down or not according to the received signals. The rudder angle feedback unit of the full-revolving propeller has the functions of rudder angle indication, standard signal output and sensor fault detection, and has the characteristics of good universality, strong compatibility and wide application range.

Description

Technical Field

[0001] The invention belongs to the field of azimuth thrusters and relates to an azimuth thruster rudder angle feedback unit and an azimuth thruster. Background Art

[0002] With the need for marine development in my country, azimuth thrusters are widely used in various types of ships, providing forward and backward power for ships. The azimuth thruster integrates the rudder and propeller, and rotates 360° around the vertical axis connecting the two, providing 360° thrust in any direction, greatly improving the maneuverability and maneuverability of the ship. In recent years, it has been widely used in ships such as port tugboats, ferries, crane ships, cable-laying ships, and dynamic positioning ships.

[0003] The document with publication number CN207417102U discloses a new type of rudder angle feedback device, which converts the actual rudder angle into an electrical signal and feeds it back to the rudder angle control system. By setting two rotary encoders, the output number of the remote control system analog signal is increased to avoid erroneous operation caused by distortion of the feedback signal. The structure is complex, difficult to maintain, and not conducive to processing and production. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a rudder angle feedback unit for an azimuth thruster with a simple structure.

[0005] In order to achieve the above-mentioned object, as a first aspect, the technical solution of the present invention is to provide a rudder angle feedback unit for an azimuth thruster, comprising:

[0006] A feedback gear set, having an input end and an output end, wherein the input end is drivingly connected to the steering gear in the lower gear box of the azimuth propeller, and the output end is connected to an indicating component to indicate the actual rudder angle of the azimuth propeller; a sensor, connected to the feedback gear set, converts the angle value of the mechanical rotation into an electrical signal and outputs it to the steering control system and the indicator, thereby realizing the indication of the rudder angle and the electrical signal conversion function;

[0007] The detection and calibration component is electrically connected to the steering control system of the full-turn propeller and is used to adjust the sensor zero position calibration and the pointer zero position adjustment. The signal of the detection and calibration component is output to the steering control system, and the steering control system determines whether the sensor has a fault based on the received signal.

[0008] According to the present invention, further, the detection calibration component includes arranging a proximity switch above the lower gear box of the azimuth propeller, and installing a detection screw on the steering gear of the lower gear box of the azimuth propeller.

[0009] According to the present invention, further, the feedback gear set includes a feedback pinion gear set, the feedback pinion gear transmits the motion to the sensor, and the sensor detects the angle value of the mechanical rotation.

[0010] According to the present invention, further, the feedback pinion gear group includes three feedback pinions, and there are two sensors; wherein the feedback pinion gear located in the middle is in contact with the sensor, and the two feedback pinions gears located on both sides that are meshed with the feedback pinion gear located in the middle are fixedly connected to the sensors corresponding to their positions.

[0011] According to the present invention, further, the feedback gear set also includes a feedback large gear that is transmission-connected to the steering gear in the lower gear box of the full-turn propeller, the feedback large gear is cooperatively connected to a vertically arranged gear shaft, one end of the gear shaft is connected to a feedback middle gear, and the feedback middle gear is coaxially arranged with the feedback small gear located in the middle.

[0012] According to the present invention, further, the feedback middle gear is connected to a vertically arranged pointer shaft, and the feedback pinion gear located in the middle is sleeved on the outer periphery of the pointer shaft and is located above the feedback middle gear.

[0013] According to the present invention, further, a pointer is connected to the upper portion of the pointer shaft, the pointer rotates synchronously with the pointer shaft, and the pointer indicates the actual rudder angle position of the azimuth thruster.

[0014] According to the present invention, further, the indicating component includes a vertically arranged pointer shaft and a pointer arranged on the upper portion of the pointer shaft and rotating synchronously therewith.

[0015] According to the present invention, further, the steering gear in the lower gear box of the azimuth propeller has the same module as the feedback large gear, and the gear on the gear shaft has the same module as the feedback middle gear meshing with it.

[0016] As a second aspect, the present invention also provides an azimuth thruster, comprising a lower gearbox and a steering gear arranged therein, and having the above-mentioned azimuth thruster rudder angle feedback unit, wherein the input end of the azimuth thruster rudder angle feedback unit is transmission-connected to the steering gear in the lower gearbox.

[0017] The beneficial effects of the present invention are:

[0018] The present invention is an omni-rotation thruster rudder angle feedback unit with rudder angle indication, standard signal output and sensor fault detection functions, and has the characteristics of good versatility, strong compatibility and wide application range.

[0019] The present invention can indicate the actual rudder angle of the azimuth thruster and convert the rudder angle into an electrical signal, which is sent to an indicator and a rudder angle control system for remotely displaying the rudder angle and controlling the rudder angle, respectively, thereby realizing the rudder angle indication and electrical signal conversion functions.

[0020] By setting a proximity switch, the steering control system of the present invention can judge whether the sensor used for steering control has a fault according to the signal of the proximity switch, so as to timely obtain whether the sensor is normal or not and facilitate timely maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the rudder angle feedback unit of the azimuth thruster of the present invention.

[0022] Among them, 1- dial 1, 2- pointer, 3- pointer shaft, 4- sensor, 5- feedback small gear, 6- rudder angle feedback unit housing, 7- feedback middle gear, 8- gear shaft, 9- feedback large gear, 10- proximity switch. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0024] See also Figure 1 , is a schematic diagram of the structure of the rudder angle feedback unit of the azimuth propeller; the rudder angle feedback unit of the azimuth propeller disclosed in the embodiment of the present application is connected to the steering gear in the lower gear box of the azimuth propeller, indicating the actual rudder angle of the azimuth propeller. It includes a feedback gear 9 connected to the steering gear in the lower gear box of the azimuth propeller, the center hole of the feedback gear 9 is matched with a vertically arranged gear shaft 8, one end of the gear shaft 8 is connected to a feedback middle gear 7, the center hole of the feedback middle gear 7 is matched with a vertically arranged pointer shaft 3, the feedback middle gear 7 is located at the lower part of the pointer shaft 3, the upper part of the pointer shaft 3 is connected to a pointer 2, the pointer 2 rotates synchronously with the pointer shaft 3, the pointer 2 indicates the actual rudder angle position of the azimuth propeller, and the rudder angle value is read on the dial 1.

[0025] In order to realize the conversion of the rudder angle into an electrical signal and send it to the indicator and the rudder angle control system, a feedback pinion 5 is arranged in the middle of the pointer shaft 3. The feedback pinion 5 is arranged in three mutually meshing arrangements. The feedback pinion 5 located in the middle is connected with the pointer shaft 3, and the other two feedback pinions 5 are arranged on both sides of the pointer shaft 3, respectively. The feedback pinions 5 located on both sides are respectively fixedly connected with a sensor 4. The feedback pinion 5 located in the middle rotates, driving the two feedback pinions 5 meshing with it and fixed with the sensors 4 to rotate. The two sensors 4 convert the angle value of the mechanical rotation into an electrical signal and output it to the steering control system and the indicator, realizing the indication of the rudder angle and the electrical signal conversion function, which is used for steering control and rudder angle indication, and can remotely display the rudder angle and rudder angle control.

[0026] Furthermore, a proximity switch 10 is arranged above the lower gearbox of the azimuth propeller, and a detection screw is installed on the steering gear of the lower gearbox of the azimuth propeller. The proximity switch 10 detects the detection screw on the steering gear when the rudder angle of the azimuth propeller is at zero position, which is used for sensor zero position calibration and pointer zero position adjustment; at the same time, the signal of the proximity switch 10 is output to the steering control system, and the steering control system can judge whether the sensor used for steering control has a fault according to the signal of the proximity switch 10, so as to timely obtain whether the sensor is normal or not.

[0027] In the embodiment of the present application, the steering gear in the lower gear box of the azimuth propeller has the same module as the feedback gearwheel 9, and the gear on the gear shaft 8 has the same module as the feedback middle gear 7 meshing with it.

[0028] In the embodiment of the present application, a rudder angle feedback unit housing 6 is included, and a feedback middle gear 7 is arranged inside the feedback unit housing 6 .

[0029] Working principle: During the rudder turning process of the azimuth propeller, the steering gear in the lower gear box of the azimuth propeller rotates to drive the feedback large gear 9 to rotate, the feedback large gear 9 drives the gear shaft 8 to rotate, the gear on the gear shaft 8 drives the feedback middle gear 7 meshing with it to rotate, the feedback middle gear 7 drives the pointer shaft 3 to rotate, the pointer shaft 3 rotates to drive the feedback pinion 5 fixed on the outer periphery of the pointer shaft 3 to rotate, the feedback pinion 5 fixed on the pointer shaft 3 rotates to drive the two feedback pinions 5 meshing with it and fixed to the sensor 4 to rotate, the two sensors 4 respectively convert the angle value of the mechanical rotation into an electrical signal and output it to the steering control system and the indicator table for steering control and rudder angle indication. The present invention can indicate the actual rudder angle of the azimuth propeller, and at the same time convert the rudder angle into an electrical signal, which is sent to the indicator table and the rudder angle control system, which are used for remote display of the rudder angle and rudder angle control, respectively, to realize the indication of the rudder angle and the electrical signal conversion function.

[0030] The above is only a preferred embodiment of the present invention, and is not any formal or substantial limitation of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present invention, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any technician familiar with this profession, without departing from the spirit and scope of the present invention, can make some changes, modifications and equivalent changes made by using the technical content disclosed above, which are equivalent embodiments of the present invention; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A rudder angle feedback unit for an azimuth thruster, characterized in that: include, A feedback gear set, having an input end and an output end, wherein the input end is drivingly connected to the steering gear in the lower gear box of the azimuth propeller, and the output end is connected to an indicating component to indicate the actual rudder angle of the azimuth propeller; a sensor, connected to the feedback gear set, converts the angle value of the mechanical rotation into an electrical signal and outputs it to the steering control system and the indicator, thereby realizing the indication of the rudder angle and the electrical signal conversion function; The detection and calibration component is electrically connected to the steering control system of the full-turn propeller and is used to adjust the sensor zero position calibration and the pointer zero position adjustment. The signal of the detection and calibration component is output to the steering control system, and the steering control system determines whether the sensor has a fault based on the received signal.

2. The azimuth thruster rudder angle feedback unit according to claim 1, characterized in that: The detection and calibration component includes a proximity switch arranged above the lower gear box of the azimuth propeller, and a detection screw is installed on the steering gear of the lower gear box of the azimuth propeller.

3. The azimuth thruster rudder angle feedback unit according to claim 1 or 2, characterized in that: The feedback gear set includes a feedback pinion gear set, and the feedback pinion gear transmits motion to the sensor, and the sensor detects the angular value of the mechanical rotation.

4. The azimuth thruster rudder angle feedback unit according to claim 3, characterized in that: The feedback pinion gear set includes three feedback pinions, and there are two sensors; wherein the feedback pinion gear located in the middle contacts the sensor, and the two feedback pinions gears located on both sides meshing with the feedback pinion gear located in the middle are fixedly connected to the sensors corresponding to their positions.

5. The azimuth thruster rudder angle feedback unit according to claim 4, characterized in that: The feedback gear set also includes a feedback large gear that is transmission-connected to the steering gear in the lower gear box of the full-turn propeller. The feedback large gear is cooperatively connected to a vertically arranged gear shaft, one end of which is connected to a feedback middle gear, and the feedback middle gear is coaxially arranged with the feedback small gear located in the middle.

6. The azimuth thruster rudder angle feedback unit according to claim 5, characterized in that: The feedback middle gear is connected with a vertically arranged pointer shaft, and the feedback pinion gear located in the middle is sleeved on the outer periphery of the pointer shaft and is located above the feedback middle gear.

7. The azimuth thruster rudder angle feedback unit according to claim 6, characterized in that: A pointer is connected to the upper part of the pointer shaft, and the pointer rotates synchronously with the pointer shaft. The pointer indicates the actual rudder angle position of the azimuth propeller.

8. The azimuth thruster rudder angle feedback unit according to claim 1, characterized in that: The indicating component comprises a vertically arranged pointer shaft and a pointer arranged on the upper part of the pointer shaft and rotating synchronously with the pointer shaft.

9. The azimuth thruster rudder angle feedback unit according to claim 4, characterized in that: The steering gear in the lower gear box of the azimuth propeller has the same module as the feedback large gear, and the gear on the gear shaft has the same module as the feedback middle gear meshing with it.

10. An azimuth propeller, comprising a lower gear box and a steering gear arranged therein, characterized in that: A rudder angle feedback unit for an azimuth thruster is provided, wherein the input end of the azimuth thruster rudder angle feedback unit is transmission-connected to the steering gear in the lower gear box.

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