Rudder angle display device of water-jet propeller

Abstract

The utility model discloses a rudder angle display device of a water jet propeller, which comprises a rocker arm and a rudder angle sensor directly connected with the rocker arm, the rudder angle sensor comprises a base body and a telescopic rod part, one end of the base body is connected with the telescopic rod part, the telescopic rod part moves along the axis direction of the base body, and the telescopic rod part is connected with the end part of the rocker arm; a resistor winding is wound in the base body, and one end, arranged in the base body, of the telescopic rod part is electrically connected with the resistor winding. According to the rudder angle display device of the water-jet propulsor, a wide resistance value range is set, so that the feedback precision of a rudder angle can be greatly improved; according to the device, a connecting rod in the prior art is omitted, direct connection is achieved through the telescopic rod part, the connecting strength is effectively improved, and angle display errors caused by deformation in the using process are avoided; a plurality of display instruments are arranged in parallel, so that the display instruments can be arranged at a plurality of stations at the same time, and the actual position of the rudder angle can be observed at a plurality of positions at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of marine navigation equipment, in particular to a water jet propulsion rudder angle display device. Background Art

[0002] The waterjet rudder angle display device is a necessary device for ships equipped with waterjet propulsion. It is used to display the position of the waterjet nozzle to the driver so that he can obtain accurate driving direction.

[0003] Water jets are widely used on medium and high-speed ships such as planing boats, wave-piercing boats, hydrofoil boats, and hovercraft. The rudder angle display device is an important component of the steering system. The rudder angle sensor in the prior art is usually a circular rudder angle sensor, which is connected to the water jet propulsion device through a connecting rod and is relatively troublesome to install. At the same time, the rudder angle display device is similar to an ammeter and can only be used at a single station, which is not convenient for multiple stations to check the rudder angle. Secondly, the resistance range of the existing circular rudder angle sensor is small, resulting in the display of the rudder angle being less accurate.

[0004] In view of the above, it is necessary to propose a water jet propulsion rudder angle display device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the above technical problems and to provide a water jet propulsion rudder angle display device.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a water jet propulsion rudder angle display device, including a rocker arm, a rudder angle sensor directly connected to the rocker arm, the rudder angle sensor including a base and a telescopic rod, the telescopic rod being connected to one end of the base, the telescopic rod moving along the axial direction of the base, and the telescopic rod being connected to the end of the rocker arm; a resistance winding being wound inside the base, and the telescopic rod being placed inside the base and electrically connected to the resistance winding at one end.

[0007] Furthermore, one end of the base is a hinged end, and the base is hingedly connected to the hull via the hinged end.

[0008] Furthermore, the rocker arm is provided with a plurality of precision adjustment holes, and the end of the telescopic rod is hingedly connected to any precision adjustment hole.

[0009] Furthermore, it also includes a plurality of display instruments, which are connected in parallel with the control circuit.

[0010] Furthermore, the telescopic rod and the rocker arm are connected by a flexible extension device, which includes a flexible sleeve, a pull wire, and a reset member; the pull wire is inserted into the flexible sleeve, one end of the pull wire is connected to the end of the rocker arm, and the other end of the pull wire is connected to the telescopic rod, and the reset member is arranged at the end of the flexible sleeve to push the telescopic rod to reset and tighten the pull wire.

[0011] Furthermore, the pull wire is a flexible and inextensible steel wire rope.

[0012] Furthermore, the reset member is a spring, a first push piece is provided on the telescopic rod, a second push piece is provided at the end of the flexible sleeve, the first push piece and the second push piece are arranged opposite each other, and the spring is arranged between the first push piece and the second push piece.

[0013] Furthermore, the resistance range of the resistor winding is: 0-5kΩ.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: a water jet propulsion rudder angle display device of the present invention is provided with a wider resistance range, which can greatly improve the feedback accuracy of the rudder angle; the connecting rod in the prior art is eliminated in the present device, and it is directly connected through a telescopic rod, which effectively improves the connection strength and avoids angle display errors caused by deformation during use; multiple display instruments are changed to a parallel setting, so that display instruments can be set at multiple stations at the same time, making it convenient for multiple positions to observe the actual position of the rudder angle at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a water jet propulsion rudder angle display device in the prior art;

[0016] Figure 2 This is a schematic diagram of the rotation state of a water jet propulsion rudder angle display device in the prior art;

[0017] Figure 3 This is a schematic diagram of a control circuit of a rudder angle sensor in the prior art;

[0018] Figure 4 This is a schematic diagram of the connection structure of the water jet propulsion rudder angle display device of the utility model;

[0019] Figure 5 This is an enlarged structural diagram of the rocker arm;

[0020] Figure 6 This is a schematic diagram of a flexible extension device provided in the waterjet propulsion rudder angle display device of the present invention;

[0021] Figure 7 This is a schematic diagram of the control circuit of the rudder angle sensor in the present invention;

[0022] In the figure: 1. Rocker arm; 2. Rudder angle sensor; 3. Display instrument; 4. Metal sheet; 5. Connecting rod; 6. Base; 7. Telescopic rod; 8. Hinge end; 9. Precision adjustment hole; 10. Flexible sleeve; 11. Pull wire; 12. Reset member; 13. First push piece; 14. Second push piece. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0024] Waterjet propulsion is a new type of specialized power unit, widely used on medium- and high-speed vessels such as planing boats, wave-piercing boats, hydrofoils, and hovercraft. Unlike conventional propulsion systems, waterjet propulsion generates thrust through the reaction force of the water jet from the propulsion pump. The ship is maneuvered by manipulating the rudder and reverse rudder devices to distribute and change the direction of the jet. A waterjet rudder angle display is essential for ships equipped with waterjets. It displays the position of the waterjet nozzle to the pilot, allowing them to accurately determine the correct steering direction.

[0025] The water jet propulsion has a rocker arm 1 linked to the nozzle position. The rudder angle display device in the prior art includes a rudder angle sensor 2 of a rotating structure and a display instrument 3; Figure 1 As shown, a metal sheet 4 is rotatably provided on the rotary steering angle sensor 2. The end of the metal sheet 4 is connected to the end of the rocker arm 1 through a connecting rod 5. In actual use, when the driver controls the nozzle angle to rotate, the rocker arm 1 simultaneously drives the metal sheet 4 to rotate through the connecting rod 5. Figure 2 As shown, the rotational rudder angle sensor 2 can feedback different current values in the control circuit and display them on the display instrument 3. In this structure, it is found that the connecting metal sheet 4 is not rigid enough during long-term use. After long-term use, it will bend, affecting the accuracy of the angle display, requiring frequent adjustment of the center position, and also affecting the sensitivity of the angle display during use.

[0026] In this structure, the display instrument 3 of the steering angle has the same essential principle as the ammeter, and the display instrument 3 is connected in series in the control circuit, such as Figure 3 As shown, in actual use, one rudder angle sensor 2 usually corresponds to only one display instrument 3 for angle display, so that the display instrument 3 of the rudder angle can only be used at a single station. In addition, the resistance range of the rudder angle sensor 2 in the prior art is usually small, with a resistance value of 0-190 ohms, which results in poor accuracy.

[0027] This water jet propulsion structure requires a connecting rod 5 to connect the rocker arm 1 and the metal sheet 4 of the sensor, which is troublesome to install. The stroke is an angle, and it will not be usable once the stroke range is exceeded. Example 1

[0028] A water jet propulsion rudder angle display device includes a rocker arm 1 and a rudder angle sensor 2 directly connected to the rocker arm 1. Like the water jet propulsion in the prior art, the rocker arm 1 changes with the direction of the nozzle. The rocker arm 1 on the water jet propulsion is connected to the rudder angle sensor 2. Figure 4 As shown, the rudder angle sensor 2 includes a base 6 and a telescopic rod 7. The telescopic rod 7 is connected to one end of the base 6. The telescopic rod 7 moves along the axis of the base 6. In this embodiment, the rudder angle sensor 2 that rotates in a rotational manner in the prior art is changed to a rudder angle sensor 2 that moves in a linear direction, and the setting of the connecting rod 5 is cancelled, so that the rocker arm 1 is directly connected to the telescopic rod 7. Specifically, the rocker arm 1 is provided with a plurality of precision adjustment holes 9, such as Figure 5 As shown, the end of the telescopic rod 7 is hingedly connected to any precision adjustment hole 9. In actual use, the end of the telescopic rod 7 is hingedly connected to any precision adjustment hole 9. The connection position of the rocker arm 1 and the connecting rod 5 in the prior art cannot be changed, so that in actual use, there is a problem of insufficient stroke, which leads to a small angle display range and a large deviation from the actual rotation angle, especially at the end of the stroke; in this embodiment, when the telescopic rod 7 is connected to the precision adjustment hole 9 near the outer end, it can correspond to a long stroke and greater precision; when connected to the precision adjustment hole 9 near the inner side, it can correspond to a short stroke and low precision; the problem of being unable to use due to insufficient stroke can be solved by changing the connection position.

[0029] The other end of the base 6 is hinged to the hull; thus, when the rocker arm 1 rotates, the telescopic rod 7 can be directly driven to telescopically move relative to the base 6 along the axial direction. This embodiment reduces the setting of the connecting rod 5, thereby reducing the number of parts and facilitating installation. In addition, the movement of the rocker arm 1 can be directly transmitted to the rudder angle sensor 2, making the movement more precise. Example 2

[0030] The base 6 is wound with a resistor winding, and one end of the telescopic rod 7 is placed inside the base 6 and electrically connected to the resistor winding; Figure 7 As shown, when the power supply is turned on to the steering angle sensor 2, different voltage values can be generated by the relative position movement of the resistor winding and the telescopic rod 7, and displayed on the display instrument 3, and converted into the actual angle of the steering angle. Figure 7As shown, the device also includes multiple display instruments 3, which are connected in parallel to the control circuit. This embodiment replaces the conventional series ammeter display format with a voltmeter display format. By connecting multiple display instruments 3 in parallel, the device can display the current at multiple stations involved in ship navigation, facilitating collaborative work for multiple crew members. In actual use, the resistance range of the resistor winding is 0-5 kΩ. In contrast to the conventional resistance range of 0-190 ohms, the resistance range in this embodiment is increased by 26 times, allowing for a more accurate display of the rudder angle. Example 3

[0031] The telescopic rod 7 is connected to the rocker arm 1 through a flexible extension device. In actual use, the setting position of the rudder angle sensor 2 can be optimized. It does not need to be set close to the rocker arm 1, and can be set at other free positions on the hull, such as Figure 6 As shown, the flexible extension device includes a flexible sleeve 10, a pull wire 11, and a reset member 12; the pull wire 11 is inserted into the flexible sleeve 10, one end of the pull wire 11 is connected to the end of the rocker arm 1, and the other end of the pull wire 11 is connected to the telescopic rod 7. The reset member 12 is arranged at the end of the flexible sleeve 10 to push the telescopic rod 7 to reset and tighten the pull wire 11. When the rocker arm 1 rotates to a certain position, the telescopic rod 7 is pulled or released by the pull wire 11, thereby converting the angular rotation into a linear motion of the telescopic rod 7, and then converted into an electrical signal through the resistance winding for display on the display instrument 3. Furthermore, the pull wire 11 is a flexible and inextensible steel wire rope. The flexibility of the steel wire rope can be set to bend with the flexible sleeve 10; in actual use, the reset member 12 can be a spring, such as Figure 6 As shown, the telescopic rod 7 is provided with a first push piece 13, and the end of the flexible sleeve 10 is provided with a second push piece 14. The first push piece 13 and the second push piece 14 are arranged opposite each other, and the spring is arranged between the first push piece 13 and the second push piece 14. It can be understood that both ends of the flexible sleeve 10 are set in fixed positions. When the rocker arm 1 rotates, the pull wire 11 is tightened, and the other end can pull the telescopic rod 7 to move. When the pull wire 11 is released, the spring can push the telescopic rod 7 to return to its original position, thereby forming an angle display corresponding to the rocker arm 1.

[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A water jet propulsion rudder angle display device, comprising a rocker arm (1), characterized in that: A steering angle sensor (2) is directly connected to a rocker arm (1), the steering angle sensor (2) comprising a base (6) and a telescopic rod (7), one end of the base (6) being connected to the telescopic rod (7), the telescopic rod (7) moving along the axis of the base (6), and the telescopic rod (7) being connected to the end of the rocker arm (1); a resistance winding is wound inside the base (6), and one end of the telescopic rod (7) is placed inside the base (6) and electrically connected to the resistance winding.

2. A water jet propulsion rudder angle display device according to claim 1, characterized in that: One end of the base (6) is a hinged end (8), and the base (6) is hingedly connected to the hull via the hinged end (8).

3. The water jet propulsion rudder angle display device according to claim 1, characterized in that: The rocker arm (1) is provided with a plurality of precision adjustment holes (9), and the end of the telescopic rod (7) is hingedly connected to any one of the precision adjustment holes (9).

4. The water jet propulsion rudder angle display device according to claim 1, characterized in that: It also includes a plurality of display instruments (3), which are connected in parallel in the control circuit.

5. The water jet propulsion rudder angle display device according to claim 1, characterized in that: The telescopic rod (7) and the rocker arm (1) are connected via a flexible extension device, which includes a flexible sleeve (10), a pull wire (11), and a reset member (12); the pull wire (11) is inserted into the flexible sleeve (10), one end of the pull wire (11) is connected to the end of the rocker arm (1), and the other end of the pull wire (11) is connected to the telescopic rod (7); the reset member (12) is arranged at the end of the flexible sleeve (10) to push the telescopic rod (7) to reset and tighten the pull wire (11).

6. The water jet propulsion rudder angle display device according to claim 5, characterized in that: The pull wire (11) is a flexible and inextensible steel wire rope.

7. The water jet propulsion rudder angle display device according to claim 5, characterized in that: The reset member (12) is a spring, a first push piece (13) is provided on the telescopic rod (7), a second push piece (14) is provided at the end of the flexible sleeve (10), the first push piece (13) and the second push piece (14) are arranged opposite to each other, and the spring is arranged between the first push piece (13) and the second push piece (14).

8. The water jet propulsion rudder angle display device according to claim 1, characterized in that: The resistance range of the resistor winding is: 0-5kΩ.

Images