Variable-position multifunctional distributed vector force testing and calibration device

Abstract

The application provides a variable-position multifunctional distributed vector force testing and calibration device, and belongs to the technical field of engine thrust testing.The application adopts a multi-point adjustable assembly installation form, mainly comprises a multi-point movable frame structure, a multi-layer adjustable support and a base structure.A plurality of engine connection positions and a plurality of assembly mounting holes are arranged on the multi-point movable frame, the assembly is mounted between the multi-point movable frame and the multi-layer adjustable assembly support, the assembly support can be adjusted in position in three axial directions, the multi-layer adjustable assembly support is connected with the base, and can be adjusted and mounted in three positions in the axial direction of the base to measure the thrust of different models of engines.The force support is connected with the multi-point movable frame, is a force application point during calibration, can be adjusted in three positions, and is calibrated by using different models of testing devices.The application can solve the problems of engine thrust measurement and assembly position arrangement adjustment during testing, and significantly improves the thrust testing precision.

Description

Technical Field

[0001] This invention belongs to the field of engine thrust testing technology and relates to a variable position multifunctional distributed vector force testing and calibration device, which can realize the acquisition of vector thrust parameters of aero-engines and can realize the test performance research under different measurement point distributions and different force application points during the testing process. Background Technology

[0002] With the development of new combat modes and the urgent need for intelligent and rapid combat capabilities, air superiority is a prerequisite for all air operations in modern warfare. The development of advanced fighter jets is a key means to achieve air superiority. Currently, the most advanced fighter jets are primarily developing with high maneuverability, high agility, post-stall maneuverability, and short takeoff and landing capabilities. Therefore, engines capable of generating large-value vector thrust are also needed to help aircraft achieve operational capabilities. The measurement of engine vector thrust generally employs a method of arranging single-component sensors on multiple surfaces (>3) of the engine to restrict the engine's six degrees of freedom and achieve vector force measurement.

[0003] However, due to differences in engine models, sizes, thrust, and angles, a single layout for measurement and calibration points cannot meet the requirements of vector force testing. Furthermore, the distance between the force application point and the measurement point causes additional torque on the measurement point, resulting in force interference, amplifying the force value impact of assembly dimensional errors, and causing deviations in sensor position output, ultimately affecting vector force testing. Therefore, a multifunctional vector force testing device capable of adjusting the sensor measurement point and the force application point is urgently needed. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention provides a variable-position, multifunctional, distributed vector force measurement and calibration device. Multiple component mounting holes are provided on the moving frame structure, allowing the component positions to be changed in three coordinate directions. Corresponding component support points are added to the fixed frame. Multiple force application points are added at the front, middle, and rear of the moving frame, enabling high-precision measurement, calibration, and verification of vector thrust for different engine models.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A variable position multifunctional distributed vector force measurement and calibration device, the structure of which includes a multi-point moving frame 1, a component 2, a multi-layer adjustable component support 3, a base 4, a load-bearing bracket 5, and a connecting plate 12.

[0007] The multi-point movable frame 1 includes two parallel crossbeams and U-shaped component connection structures installed at intervals on the crossbeams. Specifically, for different engine models and sizes, U-shaped component connection structures A, B, and C are provided at the front, middle, and rear of the multi-point movable frame 1. Multiple mounting holes for components 2 are provided on the four sides of each U-shaped component connection structure. Establishing a coordinate system with the horizontal long side of the multi-point movable frame 1 as the X-axis, the horizontal short side as the Y-axis, and the vertical direction as the Z-axis, the following description uses U-shaped component connection structure A: X-direction component 2 is installed on the X-direction AX surface of U-shaped component connection structure A; Y-direction component 2 is installed on the Y-direction AY1 and the opposite AY2 surfaces; and Z-direction component 2 is installed on the bottom AZ surface in the Z-direction. The mounting holes evenly distributed on the AX plane allow the component 2 in the X direction to be horizontally repositioned in the Y direction. The evenly distributed holes on the AY1 and AY2 planes allow the component 2 in the Y direction to be vertically repositioned in the Z direction. The evenly distributed holes on the AZ plane allow the component 2 in the Z direction to be horizontally repositioned in the Y direction. The U-shaped connection structures at positions B and C are also equipped with multi-point connection holes. Threaded holes are provided on the inner side of the three U-shaped connection structures of the multi-point moving frame 1 for mounting different types of engines and for the load-bearing bracket 5 used for calibrating.

[0008] The component 2 comprises flexible structures 6 at both ends and a unidirectional force sensor 7 in the middle, the three parts connected in series. The unidirectional force sensor 7 is fixed between the two flexible structures 6 by threads. The outer ends of the two flexible structures 6 are mounted on a mounting plate, which has mounting holes for connecting with the multi-point movable frame 1 and the multi-layer adjustable component support 3. The horizontal bottom surfaces of the U-shaped component connection structures A, B, and C of the multi-point movable frame 1 are connected to the base 4 through component 2, and the two vertical sides are connected through the multi-layer adjustable component support 3 of component 2. By arranging N components 2 around the multi-point movable frame 1, the vector force of the aero-engine can be measured. The number of components N is greater than or equal to six.

[0009] Furthermore, the flexible component structure 6 adopts a structure in which two thin plates are arranged perpendicularly to each other in the middle, which can be used for axial force transmission but not lateral force transmission.

[0010] Furthermore, the unidirectional force sensor 7 can only measure the axial force transmitted to component 2 and is not sensitive to lateral forces.

[0011] The multi-layer adjustable component support 3 mainly consists of two parts: a component support 8 and a heightening beam 9. The component support 8 is placed on the heightening beam 9 and fixedly connected by bolts. It is connected to the component 2 on the side. The heightening beams 9 are stacked to increase their height, and are connected to each other by bolts. The adjustable component support 3 is used to fix and support the component 2 in the X and Y directions. The installation position of the component 2 can be adjusted according to the model of the engine being tested and the different layout requirements of the component 2. The adjustable component support 3 is mounted on the base 4. Specifically: based on the component positions in the X and Y directions, the required number of heightening beams 9 is calculated, and the heightening beams 9 are stacked and fixed. The T-slots on the side of the component support 8 allow for fine-tuning of the installation position of the component 2.

[0012] Furthermore, the component support 8 has a D-shaped structure with threaded holes and two T-slots on its vertical connecting surface. It connects to the component 2 via these connecting surfaces. The T-slots are used for minor adjustments to the vertical position of the component 2, accommodating its movement on the multi-point movable frame 1. A horizontally placed mounting plate E is placed at the bottom of the component support 8 for its installation and positioning. Several elongated holes are provided on the bottom surface of the plate E to adjust the installation position of the component support 8 according to the length of the component 2 (one end of the mounting plate of component 2 is bolted to the mounting hole of the U-shaped component connection structure of the multi-point movable frame 1, and the other end of the mounting plate is bolted to the vertical connecting surface of the component support 8), ensuring a tight installation of the component 2.

[0013] Furthermore, the heightening beam 9 is a multi-layered structure, with each layer being an I-beam structure, including two horizontal plates at the top and bottom and two vertical plates in the middle. The two horizontal plates at the top and bottom are used to connect the upper and lower structures, and the two vertical plates in the middle are used to bear the axial force of the component 2, ensuring the overall structural rigidity and preventing deformation under stress.

[0014] The base 4 includes a main base 10 and six secondary bases 11. It is used to install the component 2 and the multi-layer adjustable component support 3 structure. Specifically, the main base 10 provides the main support, and the six secondary bases 11 are installed on both sides of the main base 10 in a symmetrical arrangement.

[0015] Furthermore, the main base 10 has multiple adjustable mounting holes on its top for connecting, fixing and adjusting the position of the Z-direction component 2; and extra space is left in front and behind the multi-point movable frame 1 for the installation position of the X-direction component 2 and the multi-layer adjustable component support 3.

[0016] Furthermore, the sub-base 11 comprises six sub-bases symmetrically installed on both sides of the base 10, and connected to the main base 10 by bolts. The sub-base 11 corresponds to the connection structure of the three U-shaped components in the multi-point movable frame 1. The sub-base is provided with mounting holes for connection to the heightening beam 9 in the multi-layer adjustable component support 3.

[0017] The load-bearing bracket 5 is placed within three U-shaped connecting structures. Its main body is fork-shaped, with a ball-and-socket structure in the middle for bearing the input force during vector testing device calibration. Threaded holes are provided on the sides and bottom of the load-bearing bracket 5, connecting it to the three U-shaped connecting structures in the multi-point movable frame 1. Each of the three U-shaped connecting structures connects to one load-bearing bracket 5, adapting to the calibration of different models of estimation test structures.

[0018] The connecting plate 12 is used to connect the load-bearing supports 5 to simulate the force transmission between the actual engine and the multi-point moving frame 1.

[0019] A method for using a variable-position multifunctional distributed vector force measurement and calibration device includes the following steps:

[0020] First, determine the dimensions of the multi-point movable frame 1 based on the dimensions of the engine being tested. Select the number of U-shaped component connection structures and install the load-bearing bracket in the middle of the U-shaped component connection structure at the engine's rear position. Connect the U-shaped connection structures using a connecting plate 12. Install the Z-direction component 2 on the main base 10 and place the multi-point movable frame 1 on the Z-direction component. Measure the length of the X-direction component, place the multi-layer adjustable component support 3 on the main base 10, adjust the installation position, and install the X-direction component between the multi-point movable frame 1 and the multi-layer adjustable component support 3. Similarly, measure the length of the Y-direction component 2, place the multi-layer adjustable component support 3 on the sub-base 11, and install the Y-direction component 2 between the multi-layer adjustable component support 3 and the multi-point movable frame. During calibration, apply a known vector force to the load-bearing bracket 5 and calculate the input vector force value using the force value output by the unidirectional force sensor 7 in the installed component 2. During engine testing, the load-bearing bracket 5 is removed, and the engine under test is installed in the U-shaped component connection structure of the multi-point movable frame 1. The multi-point movable frame 1 and the engine are relatively fixed. At this time, the engine is started, and the engine nozzle is adjusted to run in different directions. The vector thrust value generated by the engine under test can be calculated by the output of the unidirectional force sensor 7 in each position component 2.

[0021] The beneficial effects of this invention are:

[0022] The multifunctional variable-position vector force testing and calibration device of the present invention adopts a multi-point moving frame and adjustable component support structure to increase the flexibility of the device, which is suitable for thrust measurement of different types of aero-engines, and the position and number of components can be changed according to the test method to increase the test accuracy. Attached Figure Description

[0023] Figure 1 This is a diagram of the overall structure for testing and calibration.

[0024] Figure 2 For components.

[0025] Figure 3 It is a multi-point moving frame structure.

[0026] Figure 4 It is a multi-layer adjustable component support structure.

[0027] Figure 5 It is a base structure.

[0028] Figure 6 It is a load-bearing support structure.

[0029] In the diagram: 1 is a multi-point moving frame; 2 is a component; 3 is a multi-layer adjustable component support; 4 is a base; 5 is a load-bearing bracket; 6 is a flexible structure; 7 is a unidirectional force sensor; 8 is a component support; 9 is a heightening beam; 10 is the main base; 11 is the secondary base; 12 is a connecting plate. Detailed Implementation

[0030] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings and technical solutions.

[0031] like Figure 1 As shown, taking the vector force measurement of a large-size aero-engine as an example, three U-shaped connection structures are used when measuring a large-size engine. During the calibration of the test device, the force application point is at one end of the multi-point movable frame 1. First, the load-bearing bracket 5 is installed inside the three U-shaped connection structures. In actual engine thrust testing, the force generated by the engine is transmitted at the connection points with the multi-point movable frame 1. Therefore, multiple connecting plates are added between the load-bearing brackets to connect the three load-bearing brackets 5, simulating the engine under test. During the calibration of the test device, a vector force is applied to the center of the load-bearing bracket 5 at one end. Next, the main base 10 and the auxiliary base 11 are connected. During installation, the levelness and parallelism of the upper surfaces of the two parts are measured using a spirit level. Three components 2 are installed on the base 4 corresponding to the U-shaped connection structures A and C in the multi-point movable frame 1, arranged in an isosceles triangle. A crane is used to place the multi-point movable frame 1 on the three components 2, and they are installed and fixed through the threaded holes at the bottom of the U-shaped connection structure.

[0032] Next, connect and fix the remaining X and Y direction components 2 to the multi-point movable frame 1, placing two components 2 in the X direction and one component 2 in the Y direction. Then, based on the component installation height, calculate the number of lifting beams 9 required for the lateral multi-layer adjustable component support 3, and stack the lifting beams 9 vertically. The bottommost lifting beam 9 of the Y-direction multi-layer adjustable component support 3 is connected to the sub-base 11, and the top is connected to the component support 8. Adjust the fixing position according to the length of component 2. Place T-nuts in the T-slots on the side of the component support 8, allowing them to slide and adjust to the position of component 2 in the Y direction. Use a spirit level to measure the levelness of the components, and then connect and fix component 2 to the component support 8.

[0033] Measure the installation height of X-direction component 2, calculate the number of riser beams 9 required in the multi-layer adjustable component support 3, and stack and install the riser beams 9. The bottom riser beam 9 is connected to the main base 10, and the top is installed with the component support 8. Adjust the fixed position according to the length of component 2. Place T-nuts in the T-slots on the side of the component support 8, which can slide in the T-slots to adjust the position of X-direction component 2. Use a spirit level to measure the levelness of the component, and then connect and fix component 2 to the component support 8.

[0034] Although the present invention has been described in detail, it is not limited to the situations described above. Those skilled in the art, upon understanding the present invention, can make modifications without departing from its scope. This method can also be used with flexible components of different sizes, engines of different sizes, and different component arrangements and quantities, simply by changing the installation positions of the components and the multi-layer adjustable component supports. Therefore, any additions to the technology and substitutions of similar content in the art should fall within the protection scope of this invention.

Claims

1. A variable-position multifunctional distributed vector force testing and calibration device, characterized in that, The device includes a multi-point movable frame (1), a component (2), a multi-layer adjustable component support (3), a base (4), a load-bearing bracket (5), and a connecting plate 12; The multi-point movable frame (1) includes two parallel crossbeams and a U-shaped component connection structure installed at intervals on the crossbeams; The component (2) includes flexible structures (6) at both ends and a unidirectional force sensor (7) in the middle. The three parts are connected in series. The unidirectional force sensor (7) is fixed between the two flexible structures (6). The outer ends of the two flexible structures (6) are both provided on the mounting plate. The mounting plate is provided with mounting holes for connecting with the multi-point movable frame (1) and the multi-layer adjustable component support (3). The multi-layer adjustable component support (3) includes a component support (8) and a height-increasing beam (9); the component support (8) is arranged on the height-increasing beam (9), and its side is connected to the component (2); multiple height-increasing beams (9) are stacked to increase height, and adjacent height-increasing beams (9) are fixedly connected; the adjustable component support (3) is installed on the base (4); The base (4) includes a main base (10) and multiple sub-bases (11) for mounting the component (2) and the multi-layer adjustable component support (3) structure; The load-bearing bracket (5) is arranged in three U-shaped connecting structures. Its main body is a fork-shaped structure with a ball-and-socket structure in the middle for bearing the input force during the calibration of the vector test device. The load-bearing bracket (5) has threaded holes on its side and bottom for connecting with the three U-shaped connecting structures. Each of the three U-shaped connecting structures is connected to a load-bearing bracket (5) to adapt to the calibration of different models of estimation test structures. The connecting plate 12 is used to simulate the force transmission between the actual engine and the multi-point moving frame (1) and to connect the load-bearing brackets (5). The multi-point moving frame (1) is specifically designed as follows: for different engine models and sizes, U-shaped component connection structures A, B, and C are provided at the front, middle, and rear of the multi-point moving frame (1); mounting holes for components (2) are provided at multiple positions on the four sides of each U-shaped component connection structure; a coordinate system is established with the horizontal long side of the multi-point moving frame (1) as the X-axis, the horizontal short side of the multi-point moving frame (1) as the Y-axis, and the vertical direction of the multi-point moving frame (1) as the Z-axis. The U-shaped component connection structure A is used as an example: the X-direction component (2) is installed on the AX surface of the X-direction of the U-shaped component connection structure A, and the Y-direction AY1 and the opposite A are installed on the X-direction component (2). The Y-direction component (2) is installed on the Y2 surface, and the Z-direction component (2) is installed on the bottom surface AZ in the Z direction; the mounting holes evenly distributed on the AX surface enable the X-direction component (2) to change its position horizontally in the Y direction, the evenly distributed holes on the AY1 and AY2 surfaces enable the Y-direction component (2) to change its position vertically in the Z direction, and the evenly distributed holes on the AZ surface enable the Z-direction component (2) to change its position horizontally in the Y direction; the U-shaped connection structure at positions B and C is also provided with multi-point connection holes; the inner side of the three U-shaped connection structures of the multi-point moving frame (1) is provided with connection thread holes for installing different models of engines and load-bearing brackets (5) used for bearing force during calibration; The horizontal bottom surfaces of the U-shaped component connection structure A, B, and C of the multi-point moving frame (1) are connected to the base (4) through the component (2), and the two vertical sides are connected to the multi-layer adjustable component support (3) through the component (2). N components (2) are arranged around the multi-point moving frame (1) to realize the measurement of the vector force of the aero-engine.

2. The variable position multifunctional distributed vector force testing and calibration device according to claim 1, characterized in that, The number of components (2) N is greater than or equal to six, and the installation position of components (2) is adjusted according to the model of the engine under test and the different layout requirements of components (2).

3. The variable position multifunctional distributed vector force testing and calibration device according to claim 1, characterized in that, The flexible component structure (6) adopts a structure in which two thin plates are arranged perpendicularly to each other in the middle, which is used for axial force transmission but not lateral force transmission; the unidirectional force sensor (7) can only measure the axial force transmitted to the component (2) and is not sensitive to lateral force.

4. The variable position multifunctional distributed vector force testing and calibration device according to claim 1, characterized in that, The component support (8) has a "D"-shaped structure. Its vertical connecting surface is provided with threaded holes and two T-slots, which are connected to the component (2). The T-slots are used to adjust the vertical position of the component (2) slightly to adapt to the movement of the component (2) on the multi-point moving frame (1). A horizontally placed mounting plate E is provided at the bottom of the component support (8) for the installation and positioning of the component support (8). A long hole is provided on the bottom surface of the plate E for adjusting the installation position of the component support (8) according to the length of the component (2) to ensure the tight installation of the component (2).

5. The variable position multifunctional distributed vector force testing and calibration device according to claim 1, characterized in that, The heightening beam (9) is a multi-layer structure, each layer is an I-beam structure, including two horizontal plates at the top and bottom and two vertical plates in the middle. The two horizontal plates at the top and bottom are used to connect the upper and lower structures, and the two vertical plates in the middle are used to bear the axial force of the component (2) to ensure the overall structural rigidity and prevent deformation when subjected to force.

6. The variable position multifunctional distributed vector force testing and calibration device according to claim 1, characterized in that, The main base (10) has multiple adjustable mounting holes on its top for connecting, fixing and adjusting the position of the Z-direction component (2); and extra space is left in front and behind the multi-point movable frame (1) for the installation position of the X-direction component (2) and the multi-layer adjustable component support (3).

7. The variable position multifunctional distributed vector force testing and calibration device according to claim 1, characterized in that, The sub-base (11) has six sub-bases symmetrically installed on both sides of the base (10), and the side is connected to the main base (10); the sub-base (11) corresponds to the three U-shaped component connection structures in the multi-point movable frame (1); the sub-base is provided with mounting holes and is connected to the heightening beam (9) in the multi-layer adjustable component support (3).

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