CN114701631A - Guide plate type vector control mechanism for pump jet propeller - Google Patents

Abstract

The invention belongs to the field of underwater vehicle control, and specifically discloses a deflector-type vector control mechanism for a pump-jet propeller, which comprises a deflector assembly and a drive assembly, wherein: the deflector assembly includes multiple a deflector, the deflector is a curved surface structure, and a plurality of deflectors are arranged along the circumference of the outer wall of the nozzle of the pump-jet propeller; the driving assembly includes a plurality of driving structures, the driving structure and the deflector In one-to-one correspondence, a plurality of driving structures are used to adjust the rotation angle of each deflector relative to the horizontal plane of the spout, thereby generating an omnidirectional and adjustable steering force. The invention combines the pump-jet propulsion technology and the vector propulsion technology, so that the steering control mechanism of the underwater vehicle has the high-speed and low-noise characteristics of the pump-jet propulsion and the high-efficiency control characteristics of the vector propulsion.

Description

A deflector-type vector control mechanism for pump-jet propulsion

technical field

The invention belongs to the field of underwater vehicle control, and more particularly relates to a deflector-type vector control mechanism for pump-jet propulsion.

Background technique

In today's increasingly important marine industry, the research on underwater vehicles has attracted more and more attention. Underwater vehicles are now mainly used in environmental research, military exploration and other fields. Pump-jet propulsion is a kind of propeller that provides power through the drive shaft of underwater vehicle. Compared with general propeller propellers, pump-jet propulsion has lower noise and higher low-noise speed. The research on pump jet propulsion is an important research direction in the field of ships, but the current pump jet propulsion device has poor maneuverability and control efficiency.

Vector propulsion technology is a cutting-edge technology applied by the world's top fighter jets. The engine nozzles of fighter jets using vector propulsion devices can not only generate high-speed airflow, but also make the airflow deflect 360°. The vector control mechanism can convert part of the thrust of the nozzle fluid into the steering force, which can improve the steering ability of the fighter. Therefore, it can be considered to design a control mechanism of underwater vehicle combined with vector propulsion technology. The control mechanism adopts a new steering control method to make the vehicle have better maneuverability.

SUMMARY OF THE INVENTION

In view of the above defects or improvement needs of the prior art, the present invention provides a deflector-type vector control mechanism for pump-jet propulsion, the purpose of which is to combine pump-jet propulsion technology and vector propulsion technology to make underwater The steering control mechanism of the aircraft has both the high-speed and low-noise characteristics of the pump-jet propulsion and the high-efficiency control characteristics of the vector thruster.

In order to achieve the above object, the present invention provides a deflector-type vector control mechanism for a pump-jet propulsion, including a deflector assembly and a drive assembly, wherein:

The deflector assembly includes a plurality of deflectors, the deflector is a curved surface structure, and the plurality of deflectors are arranged along the circumference of the outer wall of the nozzle of the pump-jet propeller; the driving assembly includes a plurality of driving structures, the The driving structures are in one-to-one correspondence with the deflectors, and a plurality of driving structures are used to adjust the rotation angle of each deflector respectively, so as to generate an omnidirectional and adjustable steering force.

As a further preference, the driving structure includes a hydraulic cylinder cylinder, a hydraulic cylinder piston rod and a transmission connecting rod connected in sequence, wherein the hydraulic cylinder cylinder is fixed on the outer wall of the spout, and the transmission connecting rod is connected by a hinge The mounting plate is connected with the deflector.

As a further preference, the transmission link is installed in the middle of the bottom end of the deflector through a hinge mounting plate; hinge mounting plates are also fixed on both sides of the bottom of the deflector, and the hinge mounting plates on the two sides are connected to the spout. Raised hinges at corresponding positions on the outer wall.

As a further preference, the structural freedom of the hydraulic cylinder piston rod, the transmission connecting rod and the deflector 1 is 1.

As a further preference, a steel oil pipe is used in the hydraulic control circuit of the hydraulic cylinder.

As a further preference, the thickness of the guide plate gradually becomes thinner from the bottom to the top.

As a further preference, there are four said guide plates in total, and they are symmetrically arranged on the outer wall of the spout.

As a further preference, there is no interference and collision with each other during the rotation of the baffles, and when the four baffles rotate toward the inside of the spout to a limit position, a partially closed conical surface is formed together.

As a further preference, when the deflector is rotated to the limit position, its rotation angle relative to the horizontal plane of the spout is ±30°.

As a further preference, a vector input tool is used to control the rotation angle of the deflector, thereby controlling the magnitude and direction of the steering force.

In general, compared with the prior art, the above technical solutions conceived by the present invention mainly have the following technical advantages:

1. The present invention combines the pump-jet propulsion technology with the vector propulsion technology, so that the steering control mechanism of the underwater vehicle has the high-speed and low-noise characteristics of the pump-jet propulsion and the high-efficiency control characteristics of the vector propulsion; The driving structure is in one-to-one correspondence with the deflector, so that the vector control mechanism can provide an all-round and adjustable steering force for the pump-jet underwater vehicle, so as to realize the vector control of the underwater vehicle.

2. In the present invention, the driving structure is hydraulically driven, and is hinged in the middle of the bottom end of the deflector, which can quickly and effectively provide accurate power for the rotation of the deflector; Improve the stability and accuracy of rotation.

3. The present invention designs the thickness of the deflector to gradually become thinner from the bottom to the top, which can achieve the predetermined mechanical properties and direction control effects of the deflector while saving material consumption and reducing the weight of the entire mechanism.

4. The present invention comprehensively considers the cost and steering control effect, and preferably adopts four deflectors, which can be rotated to realize any combination of angles, provide steering force in any direction for the underwater vehicle, and the steering force is controllable; Personnel can directly control the deflector.

Description of drawings

1 is a schematic structural diagram of a deflector-type vector control mechanism for a pump-jet propulsion according to an embodiment of the present invention;

2 is a schematic structural diagram of a single deflector according to an embodiment of the present invention;

3 is a schematic diagram of a manipulation strategy of a deflector-type vector control mechanism according to an embodiment of the present invention.

In all the drawings, the same reference numerals are used to refer to the same elements or structures, wherein: 1- deflector plate, 2- spout outer wall, 3- hydraulic cylinder mount, 4- hydraulic cylinder barrel, 5- hydraulic Cylinder piston rod, 6-drive connecting rod, 7-living hinge point, 8-fixed hinge point.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

A deflector-type vector control mechanism for a pump-jet propulsion provided by an embodiment of the present invention, as shown in FIG. 1 , includes a deflector assembly and a drive assembly, wherein:

The deflector assembly includes a plurality of deflectors 1, the deflector 1 is a curved surface structure, and the plurality of deflectors 1 are arranged along the circumferential direction of the outer wall 2 of the nozzle of the pump-jet propeller. The driving assembly includes a plurality of driving structures, the driving structures are in one-to-one correspondence with the deflectors 1, and the plurality of driving structures are used to adjust the rotation angle of each deflector 1 relative to the horizontal plane of the nozzle outlet of the pump-jet propeller. Therefore, the pump-jet propulsion is combined with the vector control mechanism to provide the pump-jet underwater vehicle with an all-round and adjustable steering force.

Further, as shown in FIG. 2 , the thickness of the deflector 1 gradually becomes thinner from the bottom to the top; both ends and the middle of the bottom of each deflector are provided with hinge mounting plates, wherein the middle The hinge mounting plate is used to connect the drive assembly, and the hinge mounting plates at both ends are connected with the protrusions at the corresponding positions on the outer wall 2 of the spout to form a hinged fixed hinge point 8 .

Further, there are four guide plates 1 in total, and they are symmetrically arranged on the outer wall 2 of the spout.

Further, there is no interference and collision with each other during the rotation of the baffles 1, and when the four baffles 1 rotate to the limit position inside the nozzle, a partially closed conical surface is formed together; the baffles 1 1 When it is rotated to the limit position, its rotation angle relative to the horizontal plane of the spout is ±30°.

Further, the driving structure includes a hydraulic cylinder cylinder 4, a hydraulic cylinder piston rod 5 and a transmission connecting rod 6 which are connected in sequence, wherein the hydraulic cylinder cylinder 4 is fixed on the hydraulic cylinder mounting seat 3 by bolt connection, and the hydraulic The cylinder mounting seat 3 is installed on the outer wall 2 of the spout by bolt connection; the bottom end of the transmission connecting rod 6 is connected with the piston rod 5 of the hydraulic cylinder, and the top end of the transmission connecting rod 6 is connected with the hinge mounting plate in the middle of the bottom end of the deflector 1 , forming a hinged living hinge point 7. Specifically, the installation position of the hydraulic cylinder must match the corresponding deflector, and the center line of the cylinder barrel of the hydraulic cylinder and the piston rod of the hydraulic cylinder must be parallel to the center line of symmetry of the deflector.

Further, the cylinder barrel 4 of the hydraulic cylinder is kept fixed during the working process, so a steel oil pipe can be used in the control circuit of the hydraulic system to increase the safety and reliability of the system.

Further, the degree of freedom of the mechanism composed of the hydraulic cylinder piston rod 5, the transmission connecting rod 6 and the deflector 1 is 1, so the rotation of the deflector can only be controlled by controlling the expansion and contraction of the hydraulic cylinder piston rod, and the expansion and contraction of the piston rod. The amount corresponds to the rotation angle of the baffle plate one-to-one, that is, the movement stroke of the piston rod 5 of the hydraulic cylinder corresponds to the fixed rotation angle of the baffle plate.

Through the above design, each deflector in the vector control mechanism of the present invention can be rotated to realize any combination of angles, providing steering force in any direction for the underwater vehicle, and the magnitude of the steering force is controllable. The rotation angle of the deflector affects the force generated in this direction, and the ratio of the rotation angles of the four deflectors determines the direction of the steering force generated by the vector control mechanism.

The steering strategy of the above-mentioned vector control mechanism is shown in Figure 3. The direction of the vector input signal vector represents the direction of the steering force generated by the vector control mechanism; the magnitude of the vector input signal vector represents the magnitude of the steering force generated by the vector control mechanism.

Further, because the vector value range of the steering force is expressed as a circle in space, and the output vector value of the vector input signal is a square, there is a part of the invalid area, that is, the dead area, in the manipulation area. When the vector input signal value is in the invalid area, the vector force generated by the vector control mechanism is always the maximum value that can be generated in this direction.

When the operator uses the above-mentioned vector control mechanism of the deflector type underwater vehicle, the operation is carried out with reference to the control strategy of the vector control mechanism, and the specific steps are as follows:

(1) The operator checks whether the deflector and the drive mechanism are in good condition, and whether the connecting parts are loose.

(2) The operator starts the hydraulic device and the control system to check whether the control signal and feedback signal are normal.

(3) The vector control mechanism is in trial operation. The operator controls the deflector to slowly rotate the deflector through the vector signal input tool to detect its performance.

(4) The vector control mechanism can be manipulated only after it is ready.

Those skilled in the art can easily understand that the above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, etc., All should be included within the protection scope of the present invention.

Claims (10)

1. The utility model provides a guide plate formula vector control mechanism for pump spray propeller which characterized in that, includes guide plate subassembly and drive assembly, wherein:

the guide plate assembly comprises a plurality of guide plates (1), the guide plates (1) are of curved surface structures, and the guide plates (1) are arranged along the circumferential direction of the outer wall (2) of the nozzle of the pump jet propeller; the driving assembly comprises a plurality of driving structures, the driving structures correspond to the guide plates (1) one by one, and the driving structures are used for respectively adjusting the rotating angle of each guide plate (1), so that steering force with all directions and adjustable size is generated.

2. The deflector-type vector control mechanism for the pump jet propeller as recited in claim 1, wherein the driving structure comprises a hydraulic cylinder (4), a hydraulic cylinder piston rod (5) and a transmission connecting rod (6) which are connected in sequence, wherein the hydraulic cylinder (4) is fixed on the outer wall (2) of the spout, and the transmission connecting rod (6) is connected with the deflector (1) through a hinge mounting plate.

3. The deflector-type vector control mechanism for a pump jet propeller as claimed in claim 2, wherein the transmission link (6) is installed at the middle of the bottom end of the deflector (1) through a hinge mounting plate; hinge mounting plates are also fixed on two sides of the bottom of the guide plate (1), and the hinge mounting plates on the two sides are hinged with the corresponding bulges on the outer wall (2) of the nozzle.

4. The deflector-type vector control mechanism for a pump jet propeller as recited in claim 2, wherein the degree of freedom of the structure composed of the hydraulic cylinder piston rod (5), the transmission connecting rod (6) and the deflector 1 is 1.

5. The deflector-type vector control mechanism for a pump jet propeller as recited in claim 2, wherein a steel oil pipe is adopted in the hydraulic control circuit of the hydraulic cylinder barrel (4).

6. The deflector-type vector control mechanism for a pump jet propeller as claimed in claim 1, wherein the thickness of the deflector (1) is gradually thinner from the bottom to the top.

7. The deflector-type vector control mechanism for a pump jet propeller as claimed in claim 1, wherein the number of the deflectors (1) is four, and the deflectors are symmetrically arranged on the outer wall (2) of the jet nozzle in pairs.

8. The deflector-type vector control mechanism for a pump jet propeller according to claim 7, wherein the deflectors (1) do not interfere with each other during rotation and form a partially closed conical surface when the four deflectors (1) rotate to the extreme position toward the inside of the nozzle.

9. The deflector-type vector control mechanism for a pump jet propeller as claimed in claim 8, wherein the deflector (1) is rotated to an extreme position by an angle of ± 30 ° with respect to the outlet plane of the jet.

10. The deflector-type vector control mechanism for a pump jet propeller of any one of claims 1-9, wherein the rotation angle of the deflector (1) is controlled by a vector input means, and thus the magnitude and direction of the steering force are controlled.

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