Screw pitch feedback device for lateral propeller of ship

Abstract

The invention provides a screw pitch feedback device for a ship lateral thruster, and relates to the technical field of thrusters, the screw pitch feedback device comprises a base, a transition sleeve is arranged in the middle of the bottom end of the base, and the transition sleeve is used for installing the base on a gear box body; a feedback shaft is rotatably installed in the middle of the inner side of the transition sleeve, the top of the feedback shaft is connected with an angle sensor, and the bottom of the feedback shaft is connected with a feedback rod. A mounting seat is arranged at the top of the base, the top of the feedback shaft penetrates through and extends out of the mounting seat, and the angle sensor is mounted in the middle of the inner side of the mounting seat; a dial is arranged at the top of the base and located at the bottom of the mounting base. According to the device, when the feedback shaft rotates, the angle sensor and the scale pointer can be synchronously driven to rotate, then a stroke mechanical signal and an electric signal are generated in real time, and therefore the output signal change of the feedback element is achieved; the accuracy of signal feedback is enhanced, and the situation of misoperation caused by failure of one feedback signal is effectively prevented.

Description

Technical Field

[0001] The invention relates to the technical field of propellers, and in particular to a pitch feedback device for a ship lateral propeller. Background Art

[0002] With the need for marine development in my country, adjustable lateral thrusters are widely used in various types of ships. Adjustable lateral thrusters provide lateral thrust for ships. The performance of adjustable lateral thrusters determines the overall performance of the ship, flexibility, maneuverability, stability, etc. The overall performance of adjustable lateral thrusters is increasingly valued. The pitch feedback device indicator refers to the transmission system as the main component of the adjustable lateral thruster, which plays a role in signal feedback. The pitch mechanical signal of the propeller is converted into an electrical signal, transmitted to the control system in real time, and displayed on the control panel, giving the operator a real-time signal, so that the control forms a closed loop, which greatly improves the accuracy and speed of ship operation.

[0003] However, in the existing pitch feedback transmission system, most of them are a set of mechanical structures driving a set of encoders. When the encoder fails, the feedback system will be paralyzed, making it impossible for the operator to judge the pitch of the propeller, the ship's rotation has no direction, and the power cannot be accurately input. It can be seen from the traditional feedback system that a set of encoders brings great safety hazards to the entire propulsion system, greatly reducing the safety and stability of the propeller.

[0004] In order to solve the above problems, we propose a pitch feedback device for a ship lateral thruster to solve the above problems. Summary of the invention

[0005] In order to solve the problem in the background technology, the present invention provides a pitch feedback device for a ship lateral thruster.

[0006] To achieve the above object, the technical solution adopted by the present invention is: A pitch feedback device for a ship lateral thruster comprises a base, a transition sleeve is arranged in the middle of the bottom end of the base, and the transition sleeve is used to install the base on a gear box; a feedback shaft is rotatably installed in the middle of the inner side of the transition sleeve, an angle sensor is connected to the top of the feedback shaft, and a feedback rod is connected to the bottom of the feedback shaft; A mounting seat is provided on the top of the base, the top of the feedback shaft passes through the mounting seat and extends out, and the angle sensor is installed in the middle of the inner side of the mounting seat; a dial is provided on the top of the base, the dial is located at the bottom of the mounting seat, the feedback shaft passes through the middle of the dial, and the scale pointer in the dial is connected to the feedback shaft.

[0007] Preferably, an upper deep groove ball bearing is provided on the top of the feedback shaft, and the upper deep groove ball bearing is installed in the middle of the inner side of the mounting seat, and a lower deep groove ball bearing is provided on the bottom of the feedback shaft, and the lower deep groove ball bearing is installed in the middle of the bottom end of the transition sleeve.

[0008] Preferably, the top of the feedback shaft is connected to the angle sensor via an upper coupling.

[0009] Preferably, the bottom of the feedback shaft is connected to the feedback rod via a retaining spring coupling.

[0010] Preferably, a protective cover is fixedly mounted on the top of the mounting seat by means of multiple groups of bolts, and the angle sensor and the upper coupling are both located in the inner cavity of the protective cover.

[0011] Preferably, a pressure plate is connected to the bottom of the angle sensor, and the pressure plate is mounted on the top of the mounting seat through multiple sets of fixing bolts.

[0012] Preferably, the bottom of the scale pointer is fixedly mounted on the outer surface of the feedback shaft via a fixing sleeve, and the scale pointer is driven to rotate synchronously via the feedback shaft.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The device of the present invention provides an upper deep groove ball bearing and a lower deep groove ball bearing at both ends of the feedback shaft, thereby providing stable support for the rotation of the feedback shaft, so that the resistance of the feedback shaft is small and the precision is high when the feedback shaft rotates; at the same time, the upper coupling and the retaining spring coupling are connected, so that when the feedback shaft rotates, the scale pointer and the angle sensor can be driven to rotate synchronously, thereby generating a stroke mechanical signal and an electrical signal, and then realizing the output signal change of the feedback element, the mechanical signal feeds back the size of the pitch angle, and the electrical signal performs position control, thereby accurately indicating the change of the pitch, and effectively preventing the occurrence of operational errors caused by the failure of a feedback signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the local structure in.

[0015] In the figure: 1. base; 2. transition sleeve; 3. feedback shaft; 4. mounting seat; 5. angle sensor; 6. pressure plate; 7. protective cover; 8. upper coupling; 9. retaining spring coupling; 10. feedback rod; 11. lower deep groove ball bearing; 12. upper deep groove ball bearing; 13. dial; 14. scale pointer; 15. fixing sleeve. DETAILED DESCRIPTION

[0016] The technical solution in the embodiment of the present application is to solve the problem of the above-mentioned background technology, and the overall idea is as follows: the device of the present invention can synchronously drive the angle sensor 5 and the scale pointer 14 to rotate when the feedback shaft 3 rotates, and then generate a stroke mechanical signal and an electrical signal in real time, thereby realizing the output signal change of the feedback element; in addition, by respectively arranging an upper deep groove ball bearing 12 and a lower deep groove ball bearing 11 at both ends of the feedback shaft 3, it can play a role of stable support for the rotation of the feedback shaft 3, so that the feedback shaft 3 has small resistance and high precision when rotating, further enhancing the accuracy of the signal feedback, and at the same time effectively preventing the occurrence of operational errors caused by the failure of a feedback signal. Example

[0017] Reference Figure 1 - Figure 2 As shown, a pitch feedback device for a ship lateral thruster of the present embodiment includes a base 1, a transition sleeve 2 is provided at the middle of the bottom end of the base 1, and the transition sleeve 2 is used to install the base 1 on the gear box body, so that the device of the present invention is installed as a whole on the gear box body for use, thereby improving stability during operation.

[0018] A feedback shaft 3 is rotatably installed in the middle of the inner side of the transition sleeve 2, the top of the feedback shaft 3 is connected to an angle sensor 5, and the bottom of the feedback shaft 3 is connected to a feedback rod 10. When the blade rotates, the feedback rod 10 drives the feedback shaft 3 to rotate, thereby driving the angle sensor 5 and the scale pointer 14 to rotate synchronously, thereby generating a stroke mechanical signal and an electrical signal; wherein, the rotation of the angle sensor 5 causes a certain angular displacement to be generated, which is expressed as an electrical signal for control.

[0019] A mounting seat 4 is provided on the top of the base 1 , the top of the feedback shaft 3 passes through the mounting seat 4 and extends out, and the angle sensor 5 is installed in the inner middle part of the mounting seat 4 , and the mounting seat 4 plays a role in stabilizing and supporting the installation of the angle sensor 5 .

[0020] A dial 13 is provided on the top of the base 1, and the dial 13 is located at the bottom of the mounting seat 4. The feedback shaft 3 passes through the middle of the dial 13, and the scale pointer 14 in the dial 13 is connected to the feedback shaft 3. The bottom of the scale pointer 14 is fixedly installed on the outer surface of the feedback shaft 3 through a fixing sleeve 15. The scale pointer 14 is driven by the feedback shaft 3 to rotate synchronously. When the scale pointer 14 rotates, the reading can be directly performed through the dial 13.

[0021] An upper deep groove ball bearing 12 is arranged on the top of the feedback shaft 3, and the upper deep groove ball bearing 12 is installed in the middle of the inner side of the mounting seat 4. A lower deep groove ball bearing 11 is arranged on the bottom of the feedback shaft 3, and the lower deep groove ball bearing 11 is installed in the middle of the bottom end of the transition sleeve 2. The upper deep groove ball bearing 12 and the lower deep groove ball bearing 11 can provide stable support for the rotation of the feedback shaft 3, so that the feedback shaft 3 has small resistance and high precision when rotating.

[0022] In some examples, the top of the feedback shaft 3 is connected to the angle sensor 5 via an upper coupling 8, and the bottom of the feedback shaft 3 is connected to the feedback rod 10 via a retaining spring coupling 9, so that the feedback shaft 3 drives the angle sensor 5 to rotate synchronously.

[0023] In some examples, a protective cover 7 is fixed on the top of the mounting base 4 by multiple sets of bolts. The angle sensor 5 and the upper coupling 8 are both located in the inner cavity of the protective cover 7. The protective cover 7 mainly serves to cover and protect the angle sensor 5 and the upper coupling 8.

[0024] In some examples, a pressure plate 6 is connected to the bottom of the angle sensor 5 , and the pressure plate 6 is mounted on the top of the mounting base 4 through a plurality of sets of fixing bolts.

[0025] The working principle of the present invention is: The present invention provides a novel pitch feedback device, which can synchronously drive the scale pointer 14 and the angle sensor 5 to rotate through the upper coupling 8 and the retaining spring coupling 9 when the feedback shaft 3 rotates, thereby realizing the change of the output signal of the feedback element, and can accurately indicate the change of the pitch, and effectively prevent the occurrence of operating errors caused by the failure of a feedback signal; Its main operating principle is that when the blade rotates, the feedback rod 10 drives the feedback shaft 3 to rotate, thereby driving the angle sensor 5 and the scale pointer 14 to rotate synchronously, thereby generating a stroke mechanical signal and an electrical signal. The electrical signal can be fed back through the angle sensor 5. When the angle sensor 5 rotates, a certain angular displacement is generated, which is expressed as an electrical signal for control; and the scale pointer 14 can provide mechanical signal feedback. The scale pointer 14 rotates and can be read directly through the dial 13. The mechanical signal feeds back the size of the pitch angle, and the electrical signal performs position control to achieve the size and direction of the thrust. The device of the present invention effectively improves the accuracy of the feedback value through the above steps.

[0026] Among them, the electrical signal is fed back to the operating console, and the operator can observe it directly. The mechanical signal allows direct observation during the early debugging and testing of the ship. The output of the mechanical signal is carried out at a 1:1 ratio.

[0027] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A pitch feedback device for a ship lateral thruster, characterized in that: It comprises a base (1), wherein a transition sleeve (2) is provided at the middle of the bottom end of the base (1), and the transition sleeve (2) is used to mount the base (1) on the gear box body; A feedback shaft (3) is rotatably mounted on the middle portion of the inner side of the transition sleeve (2); an angle sensor (5) is connected to the top of the feedback shaft (3); and a feedback rod (10) is connected to the bottom of the feedback shaft (3); A mounting seat (4) is provided on the top of the base (1), the top of the feedback shaft (3) passes through the mounting seat (4) and extends out, and the angle sensor (5) is mounted on the inner middle part of the mounting seat (4); A scale plate (13) is provided on the top of the base (1), the scale plate (13) is located at the bottom of the mounting seat (4), the feedback shaft (3) passes through the middle of the scale plate (13), and the scale pointer (14) in the scale plate (13) is connected to the feedback shaft (3).

2. A pitch feedback device for a ship lateral thruster according to claim 1, characterized in that: An upper deep groove ball bearing (12) is arranged at the top of the feedback shaft (3), and the upper deep groove ball bearing (12) is mounted in the middle of the inner side of the mounting seat (4); a lower deep groove ball bearing (11) is arranged at the bottom of the feedback shaft (3), and the lower deep groove ball bearing (11) is mounted in the middle of the bottom end of the transition sleeve (2).

3. A pitch feedback device for a ship lateral thruster according to claim 2, characterized in that: The top of the feedback shaft (3) is connected to the angle sensor (5) via an upper coupling (8).

4. A pitch feedback device for a ship lateral thruster according to claim 3, characterized in that: The bottom of the feedback shaft (3) is connected to the feedback rod (10) via a retaining spring coupling (9).

5. A pitch feedback device for a ship lateral thruster according to claim 4, characterized in that: A protective cover (7) is fixedly mounted on the top of the mounting seat (4) via multiple groups of bolts, and the angle sensor (5) and the upper coupling (8) are both located in the inner cavity of the protective cover (7).

6. A pitch feedback device for a ship lateral thruster according to claim 5, characterized in that: The bottom of the angle sensor (5) is connected to a pressure plate (6), and the pressure plate (6) is mounted on the top of the mounting seat (4) via a plurality of sets of fixing bolts.

7. A pitch feedback device for a ship lateral thruster according to claim 6, characterized in that: The bottom of the scale pointer (14) is fixedly mounted on the outer surface of the feedback shaft (3) via a fixing sleeve (15), and the scale pointer (14) is driven to rotate synchronously via the feedback shaft (3).

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