A vectoring nozzle adjusting mechanism motion simulation test bench
By designing a motion simulation test bench for the vector nozzle adjustment mechanism, the problems of deformation and jamming of the vector nozzle adjustment mechanism were solved, and precise motion simulation and synchronous control were achieved, thereby improving the adjustment accuracy and reliability of aero-engines.
Patent Information
- Application Number
- CN202310318136.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-03-28
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2043-03-28
AI Technical Summary
Existing vector nozzle adjustment mechanisms suffer from deformation, jamming, and poor adjustment accuracy in complex spatial multi-link mechanisms, affecting the reliability and adjustment accuracy of aero engines.
A motion simulation test bench for a vector nozzle adjustment mechanism was designed, including a base, a support, an electric servo push rod, a moving ring, a stationary disk, an adjustment plate assembly, and a support and guide assembly. The moving ring and adjustment plate are driven by the electric servo push rod to simulate the kinematics and dynamics of the vector nozzle adjustment mechanism, thereby realizing parametric design and synchronous control.
It achieves accurate motion simulation of the vector nozzle adjustment mechanism, meets the needs of kinematic and dynamic experimental research, and improves the adjustment accuracy and reliability of the adjustment mechanism.
Smart Images
Figure CN116448441B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of multi-body dynamics test, in particular to a vector nozzle adjusting mechanism motion simulation test bench. BACKGROUND
[0002] As a key technology of the new generation of fighter, the thrust vector technology can not only provide necessary thrust for the aircraft, but also make the fighter have super short take-off and landing ability, fully exert the flexibility and stealth of the fighter, and play a crucial role in improving the combat capability of the fighter.
[0003] In order to cope with the safety of the airspace, the update and combat capability of the fighter become the top priority, and the research on the vector nozzle control technology also begins to be popular. The vector nozzle is an important mechanism to realize the thrust vector technology, which can make the engine thrust direction deviate from the engine axis direction. The axisymmetric vector nozzle will be the main force of thrust vector control for a long time, and its in-depth and detailed research becomes an urgent task.
[0004] The adjusting mechanism of the vector nozzle tail is an important mechanism to realize the thrust vector technology, which is a complex spatial multi-link mechanism composed of a plurality of actuating cylinders driven by a multi-stage link mechanism. The connecting position kinematic pairs of the links and the linkage rings in the adjusting mechanism are extremely complex. Under the action of the dynamic load of the actuating cylinder, the links and the linkage rings in the adjusting mechanism will deform to different degrees, which will cause the adjusting accuracy of the vector nozzle adjusting mechanism to be unable to be guaranteed. In addition, due to the frictional resistance between the links of the vector nozzle adjusting mechanism, the phenomena of jamming and poor adjusting accuracy are easy to occur, which will also affect the reliability of the aero-engine.
[0005] Therefore, it is imperative to develop a vector nozzle adjusting mechanism motion simulation test bench, which should have the ability to simulate the motion of the vector nozzle adjusting mechanism, the ability to carry out experimental research on the kinematics and dynamics of the adjusting mechanism, and the ability to carry out parameterized design, rigid-flexible coupling and synchronous control research on the adjusting mechanism. SUMMARY
[0006] In view of the problems existing in the prior art, the present application provides a vector nozzle adjusting mechanism motion simulation test bench, which can simulate the motion of the vector nozzle adjusting mechanism, meet the needs of experimental research on the kinematics and dynamics of the adjusting mechanism, and meet the needs of parameterized design, rigid-flexible coupling and synchronous control research on the adjusting mechanism.
[0007] In order to achieve the above object, the present application adopts the following technical scheme: a vector nozzle adjusting mechanism motion simulation test bench, comprising a base, a first support, a second support, a third support, a fourth support, a fifth support, a first electric servo push rod, a second electric servo push rod, a moving ring, a static disc, an adjusting piece assembly, a first support guiding assembly and a second support guiding assembly; the first support is fixedly installed on the base; the tail end of the shell of the first electric servo push rod is hingedly connected to the upper portion of the first support, and the top end of the push rod of the first electric servo push rod is hingedly connected to the moving ring; the second electric servo push rod is located directly below the first electric servo push rod, the tail end of the shell of the second electric servo push rod is hingedly connected to the lower portion of the first support, and the top end of the push rod of the second electric servo push rod is hingedly connected to the moving ring; the second support is fixedly installed on the base and spans the second electric servo push rod; the third support is fixedly installed on the top of the second support; the static disc is fixedly installed on the third support, and the static disc is located on the side of the center of the moving ring; the adjusting piece assembly is in a plurality, and the plurality of adjusting piece assemblies are arranged between the moving ring and the static disc in the circumferential direction; the fourth support and the fifth support are fixedly installed on the base, and the moving ring is located between the fourth support and the fifth support; the first support guiding assembly is arranged between the moving ring and the fourth support; and the second support guiding assembly is arranged between the moving ring and the fifth support.
[0008] The adjusting piece assembly comprises a first hinge lug seat, a first connecting rod, a universal ball joint, an adjusting piece, a second connecting rod and a second hinge lug seat; the first hinge lug seat is fixedly installed on the moving ring; one end of the first connecting rod is hingedly connected with the first hinge lug seat, and a first angle sensor is installed at the hinged connection between the first connecting rod and the first hinge lug seat; the other end of the first connecting rod is connected with one end of the adjusting piece through the universal ball joint, and the other end of the adjusting piece is hingedly connected with one end of the second connecting rod, and a second angle sensor is installed at the hinged connection between the adjusting piece and the second connecting rod; the second hinge lug seat is fixedly installed on the static disc; the other end of the second connecting rod is hingedly connected with the second hinge lug seat, and a third angle sensor is installed at the hinged connection between the second connecting rod and the second hinge lug seat.
[0009] The first support guiding assembly and the second support guiding assembly are the same in structure, and each comprises a support shaft, a bearing seat, a sliding block and a guide rail; one end of the support shaft is fixedly connected with the moving ring, and the center of the moving ring is located on the axial center line of the support shaft; the other end of the support shaft is rotatably connected with the sliding block through the bearing seat, and the sliding block is arranged on the guide rail; the guide rail in the first support guiding assembly is horizontally fixed on the top of the fourth support, and a first displacement sensor is arranged between the sliding block and the fourth support; the guide rail in the second support guiding assembly is horizontally fixed on the top of the fifth support, and a second displacement sensor is arranged between the sliding block and the fifth support.
[0010] The present application has the following beneficial effects:
[0011] The vector nozzle adjusting mechanism motion simulation test bench of the application can simulate the motion of the vector nozzle adjusting mechanism, can meet the needs of kinematics and dynamics test research of the adjusting mechanism, and can meet the needs of parameterized design of the adjusting mechanism, rigid-flexible coupling of flexible rods and synchronous control research. BRIEF DESCRIPTION OF DRAWINGS
[0012] Fig. 1 Fig. 1 is a structural schematic diagram of a vector nozzle adjusting mechanism motion simulation test bench of the application;
[0013] Fig. 2 Fig. 2 is a structural schematic diagram of an adjusting piece assembly of the application;
[0014] Fig. 3 Fig. 3 is a structural schematic diagram of a support and guide assembly of the application;
[0015] Fig. 4 Fig. 4 is a schematic diagram of the maximum expansion state formed between five adjusting pieces when the moving ring is in the rear limit position of the application;
[0016] Fig. 5 Fig. 5 is a schematic diagram of the minimum expansion state formed between five adjusting pieces when the moving ring is in the front limit position of the application;
[0017] Fig. 6 Fig. 6 is a schematic diagram of the oblique upward expansion state formed between five adjusting pieces when the moving ring is in the maximum upward deflection angle of 20° of the application;
[0018] Fig. 7 Fig. 7 is a schematic diagram of the oblique downward expansion state formed between five adjusting pieces when the moving ring is in the maximum downward deflection angle of 20° of the application;
[0019] In the figure, 1 is a base, 2 is a first support, 3 is a second support, 4 is a third support, 5 is a fourth support, 6 is a fifth support, 7 is a first electric servo push rod, 8 is a second electric servo push rod, 9 is a moving ring, 10 is a static disc, 11 is a first hinge lug seat, 12 is a first connecting rod, 13 is a universal ball joint, 14 is an adjusting piece, 15 is a second connecting rod, 16 is a second hinge lug seat, 17 is a first angle sensor, 18 is a second angle sensor, 19 is a third angle sensor, 20 is a support shaft, 21 is a bearing seat, 22 is a sliding block, 23 is a guide rail, 24 is a first displacement sensor, and 25 is a second displacement sensor. DETAILED DESCRIPTION
[0020] The application will be further described in detail below in combination with the drawings and specific embodiments.
[0021] As Figs. 1-3As shown, a vector nozzle adjusting mechanism motion simulation test bench comprises a base 1, a first support 2, a second support 3, a third support 4, a fourth support 5, a fifth support 6, a first electric servo push rod 7, a second electric servo push rod 8, a moving ring 9, a static disc 10, an adjusting piece assembly, a first support and guide assembly and a second support and guide assembly; the first support 2 is fixedly installed on the base 1; the tail end of the shell of the first electric servo push rod 7 is hingedly connected to the upper portion of the first support 2, and the top end of the push rod of the first electric servo push rod 7 is hingedly connected to the moving ring 9; the second electric servo push rod 8 is located directly below the first electric servo push rod 7, the tail end of the shell of the second electric servo push rod 8 is hingedly connected to the lower portion of the first support 2, and the top end of the push rod of the second electric servo push rod 8 is hingedly connected to the moving ring 9; the second support 3 spans over the second electric servo push rod 7 and is fixedly installed on the base 1; the third support 4 is fixedly installed on the top of the second support 3; the static disc 10 is fixedly installed on the third support 4, and the static disc 10 is located on the side of the center of the moving ring 9; the adjusting piece assembly is in a plurality of numbers, and the plurality of adjusting piece assemblies are arranged in a circumferential direction between the moving ring 9 and the static disc 10; the fourth support 5 and the fifth support 6 are fixedly installed on the base 1, and the moving ring 9 is located between the fourth support 5 and the fifth support 6; the first support and guide assembly is arranged between the moving ring 9 and the fourth support 5; and the second support and guide assembly is arranged between the moving ring 9 and the fifth support 6.
[0022] The adjusting piece assembly comprises a first hinge lug seat 11, a first connecting rod 12, a universal ball joint 13, an adjusting piece 14, a second connecting rod 15 and a second hinge lug seat 16; the first hinge lug seat 11 is fixedly installed on the moving ring 9; one end of the first connecting rod 12 is hingedly connected to the first hinge lug seat 11, and a first angle sensor 17 is installed at the hinged connection between the first connecting rod 12 and the first hinge lug seat 11; the other end of the first connecting rod 12 is connected to one end of the adjusting piece 14 through the universal ball joint 13, the other end of the adjusting piece 14 is hingedly connected to one end of the second connecting rod 15, and a second angle sensor 18 is installed at the hinged connection between the adjusting piece 14 and the second connecting rod 15; the second hinge lug seat 16 is fixedly installed on the static disc 10; the other end of the second connecting rod 15 is hingedly connected to the second hinge lug seat 16, and a third angle sensor 19 is installed at the hinged connection between the second connecting rod 15 and the second hinge lug seat 16.
[0023] The first support guiding assembly and the second support guiding assembly are identical in structure, and each comprises a support shaft 20, a bearing seat 21, a sliding block 22 and a guide rail 23; one end of the support shaft 20 is fixedly connected with the moving ring 9, and the center of the moving ring 9 is located on the axial center line of the support shaft 20; the other end of the support shaft 20 is rotatably connected with the sliding block 22 through the bearing seat 21, and the sliding block 22 is arranged on the guide rail 23; the guide rail 23 in the first support guiding assembly is horizontally fixed on the top of the fourth support 5, and a first displacement sensor 24 is arranged between the sliding block 22 and the fourth support 5; the guide rail 23 in the second support guiding assembly is horizontally fixed on the top of the fifth support 6, and a second displacement sensor 25 is arranged between the sliding block 22 and the fifth support 6.
[0024] In the embodiment, the moving ring 8 is used to simulate an A9 ring of an engine vector nozzle, the static disc 9 is used to simulate an A8 ring of the engine vector nozzle, and the number of the adjusting piece assemblies is five. The base 1 is a cast iron platform, and the cast iron platform is provided with inverted T-shaped grooves. The first support 2, the second support 3, the third support 4, the fourth support 5 and the fifth support 6 are all position-adjusted and fixed by cooperating with the inverted T-shaped grooves on the base 1 through T-shaped bolts. The stroke range of the first electric servo push rod 7 and the second electric servo push rod 8 is 0-150 mm. The first angle sensor 17, the second angle sensor 18 and the third angle sensor 19 are of the same type, and the outputs of the three angle sensors are all voltage types, and the three angle sensors have the advantages of long mechanical life, high resolution and good rotation smoothness. The first displacement sensor 24 and the second displacement sensor 25 are both pull-wire displacement sensors, and the outputs of the two displacement sensors are both voltage types, and the two displacement sensors have the advantages of long service life and high precision.
[0025] The use process of the application will be described below in combination with the drawings:
[0026] When the first electric servo push rod 7 and the second electric servo push rod 8 are synchronously and uniformly retracted, the moving ring 8 can be driven to translate backward along the guide rail 23, the moving ring 8 has no deflection angle, and the action amplitudes of the five adjusting piece assemblies between the moving ring 8 and the static disc 9 are the same. When the moving ring 8 is translated to the limit position backward, the five adjusting pieces 14 form the maximum expansion state, as shown in Fig. 4 .
[0027] When the first electric servo push rod 7 and the second electric servo push rod 8 are synchronously and uniformly extended, the moving ring 8 can be driven to translate forward along the guide rail 23, the moving ring 8 has no deflection angle, and the action amplitudes of the five adjusting piece assemblies between the moving ring 8 and the static disc 9 are the same. When the moving ring 8 is translated to the limit position forward, the five adjusting pieces 14 form the minimum expansion state, as shown in Fig. 5 .
[0028] When the first electric servo push rod 7 performs the retraction action and the second electric servo push rod 8 performs the extension action, the movable ring 8 can be driven to rotate backward around the support shaft 20, and the action amplitudes of the five adjusting piece assemblies between the movable ring 8 and the static disc 9 are different. When the movable ring 8 rotates backward to the limit position, the maximum upward deflection angle of the movable ring 8 in this embodiment is 20°, and the five adjusting pieces 14 form an upward expanding state, as shown in FIG. 6. Fig. 6
[0029] When the first electric servo push rod 7 performs the retraction action and the second electric servo push rod 8 performs the extension action, the movable ring 8 can be driven to rotate backward around the support shaft 20, and the action amplitudes of the five adjusting piece assemblies between the movable ring 8 and the static disc 9 are different. When the movable ring 8 rotates backward to the limit position, the maximum upward deflection angle of the movable ring 8 in this embodiment is 20°, and the five adjusting pieces 14 form an upward expanding state, as shown in FIG. 6. Fig. 7
[0030] Through the above action process, the motion of the vector nozzle adjusting mechanism can be simulated. On this basis, further test researches on the kinematics and dynamics of the adjusting mechanism can be carried out, and related researches on the parameterized design of the adjusting mechanism, the rigid-flexible coupling of the flexible rod and the synchronous control can be carried out.
[0031] The scheme in the embodiment is not used to limit the patent protection scope of the present application, and equivalent implementations or changes made without departing from the present application are included in the patent scope of the present application.
Claims
1. A test stand for simulating the motion of a vectoring nozzle adjustment mechanism, characterized in that: The application relates to a servo motor, which comprises a base, a first support, a second support, a third support, a fourth support, a fifth support, a first electric servo push rod, a second electric servo push rod, a moving ring, a static disc, an adjusting piece assembly, a first support guiding assembly and a second support guiding assembly; the first support is fixedly installed on the base; the tail end of the shell of the first electric servo push rod is hingedly connected to the upper portion of the first support, and the top end of the push rod of the first electric servo push rod is hingedly connected to the moving ring; the second electric servo push rod is located directly below the first electric servo push rod, the tail end of the shell of the second electric servo push rod is hingedly connected to the lower portion of the first support, and the top end of the push rod of the second electric servo push rod is hingedly connected to the moving ring; the second support is fixedly installed on the base and crosses over the second electric servo push rod; the third support is fixedly installed on the top of the second support; the static disc is fixedly installed on the third support and is located on the side of the center of the moving ring; the adjusting piece assembly is arranged between the moving ring and the static disc; the fourth support and the fifth support are fixedly installed on the base, and the moving ring is located between the fourth support and the fifth support; the first support guiding assembly is arranged between the moving ring and the fourth support; the second support guiding assembly is arranged between the moving ring and the fifth support; the adjusting piece assembly comprises a first hinged lug seat, a first connecting rod, a universal ball joint, an adjusting piece, a second connecting rod and a second hinged lug seat; the first hinged lug seat is fixedly installed on the moving ring; one end of the first connecting rod is hingedly connected to the first hinged lug seat, and a first angle sensor is installed at the hinged connection between the first connecting rod and the first hinged lug seat; the other end of the first connecting rod is connected to one end of the adjusting piece through the universal ball joint, and the other end of the adjusting piece is hingedly connected to one end of the second connecting rod; a second angle sensor is installed at the hinged connection between the adjusting piece and the second connecting rod; the second hinged lug seat is fixedly installed on the static disc; the other end of the second connecting rod is hingedly connected to the second hinged lug seat, and a third angle sensor is installed at the hinged connection between the second connecting rod and the second hinged lug seat.
2. The test stand of claim 1, wherein: The first support guiding assembly and the second support guiding assembly are the same in structure and each comprises a support shaft, a bearing seat, a sliding block and a guide rail; one end of the support shaft is fixedly connected to the moving ring, and the center of the moving ring is located on the axial center line of the support shaft; the other end of the support shaft is rotatably connected to the sliding block through the bearing seat, and the sliding block is arranged on the guide rail; the guide rail in the first support guiding assembly is horizontally fixed on the top of the fourth support, and a first displacement sensor is arranged between the sliding block and the fourth support; the guide rail in the second support guiding assembly is horizontally fixed on the top of the fifth support, and a second displacement sensor is arranged between the sliding block and the fifth support.
Citation Information
Patent Citations
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