CN219064880U - Nine component force test bed of engine - Google Patents
Nine component force test bed of engine Download PDFInfo
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- CN219064880U CN219064880U CN202222938651.8U CN202222938651U CN219064880U CN 219064880 U CN219064880 U CN 219064880U CN 202222938651 U CN202222938651 U CN 202222938651U CN 219064880 U CN219064880 U CN 219064880U
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Abstract
The utility model discloses a nine-component force test bed of an engine, which relates to the technical field of engine test equipment and comprises a fixed test bed, a movable test bed and a test mechanism, wherein the movable test bed comprises a first movable frame, a second movable frame and a supporting installation frame, the first movable frame and the second movable frame are arranged in parallel, the supporting installation frame is arranged between the first movable frame and the second movable frame, the supporting installation frame is fixedly connected with the first movable frame and the second movable frame respectively, and the test mechanism comprises an axial force measurer, a horizontal force measurer and a vertical force measurer.
Description
Technical Field
The utility model relates to the technical field of engine test equipment, in particular to an engine nine-component force test bed.
Background
The stability of the thrust of the aircraft engine needs to be ensured in the flight process, if the output thrust of the engine has deviation in the flight process, the flight track of the aircraft can be greatly changed, and the torque pressure required to be borne by the aircraft can be increased, so that the engine needs to be tested in the research and development process of the aircraft engine, the rationality and stability of the engine are ensured, the test bed in the prior art cannot detect the thrust of the engine at all direction angles in the test process of the engine, and the output deviation of the engine cannot be effectively detected.
Disclosure of Invention
The utility model aims to provide an engine nine-component force test bed aiming at the defects in the prior art.
In order to achieve the above object, the present utility model adopts the following scheme:
in this application with the engine installation to movable test bench in, then start the engine, the power transmission that the engine operation in-process produced is in to the test mechanism, gathers the pulling force numerical value that the engine operation in-process produced through the test mechanism to this operation data that obtains the engine.
The nine component force test bed for the engine comprises a fixed test bed, a movable test bed and a test mechanism, wherein the movable test bed comprises a first movable frame, a second movable frame and a supporting installation frame, the first movable frame and the second movable frame are mutually arranged in parallel, the supporting installation frame is connected and arranged between the first movable frame and the second movable frame to enable the first movable frame, the second movable frame and the supporting installation frame to be spliced to form a rectangular frame body, the test mechanism is arranged between the fixed test bed and the movable test bed, the test mechanism comprises an axial force measuring device, a horizontal force measuring device and a vertical force measuring device,
the three axial force measuring devices are arranged, the three axial force measuring devices are parallel to the middle supporting installation frame, the three axial force measuring devices are arranged between the fixed test bench and the movable test bench, the connecting lines of the arrangement points of the three axial force measuring devices are isosceles triangles,
the three horizontal force measuring devices are horizontally arranged and perpendicular to the supporting installation frame, the three horizontal force measuring devices are arranged between the fixed test bench and the movable test bench, the connecting lines of the arrangement points of the three horizontal force measuring devices are isosceles triangles,
the three vertical force measuring devices are arranged vertically, the three vertical force measuring devices are arranged between the fixed test bench and the movable test bench, and the connecting lines of the arrangement points of the three vertical force measuring devices are isosceles triangles.
Further, be provided with the connecting block on the fixed testboard, three axial force measuring device sets up between testboard and connecting block, can be convenient for be connected between axial force measuring device and the movable testboard through the connecting block.
Further, including the locating rack, the locating rack sets up a plurality of, and a plurality of locating rack sets up respectively between fixed testboard and activity testboard, can carry out the connection support between activity testboard and the fixed testboard through the locating rack to the stability that the engine laid in this application has been guaranteed.
Furthermore, the test device comprises a plurality of standard force sensors, wherein the plurality of standard force sensors are respectively arranged between the fixed test bench and the movable test bench, the standard force sensors can be used for obtaining the numerical value of the standard force, and the accurate tension of the engine is calculated by comparing the numerical value of the standard force with the detection data of the test mechanism.
Further, the first movable frames are respectively provided with a fixed table, and the connection between the engine and the movable test table can be ensured through the fixed tables
Further, the axial force measuring device, the horizontal force measuring device and the vertical force measuring device are identical in structure, the axial force measuring device is composed of a force sensor and three universal flexible pieces, the upper end and the lower end of the force sensor are respectively provided with the universal flexible pieces, and the accuracy of the force sensor in tensile force test can be improved through the three universal flexible pieces.
Compared with the prior art, the utility model has the advantages that:
the power on the movable test bench is transmitted to the force sensor through the universal flexible piece, the force is transmitted to the universal flexible piece on the other side from the force sensor, the universal flexible piece on the other side transmits the power to the fixed test bench, the power on the engine is detected through the force sensor, then the system detects the power on the engine by combining the standard force sensor, at the moment, the thrust vector can be simulated when the engine operates by combining the stress data on the sides of the three axial force measuring devices, the three horizontal force measuring devices and the three vertical force measuring devices, and the three component force and the component force moment, the eccentric angle and the eccentric distance on the movable frame coordinate system of the thrust vector can be solved by measuring each component force of the thrust vector.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a nine-component force test bed;
FIG. 2 is a schematic perspective view of a movable test stand;
FIG. 3 is a front view of the active test stand;
FIG. 4 is a top view of the movable test stand;
FIG. 5 is a side view of the movable test stand in section;
FIG. 6 is a schematic structural view of an axial force gauge;
fig. 7 is a schematic diagram of a mathematical model of a horizontal nine-component test bed.
Reference numerals:
the test bench comprises a fixed test bench 1, a movable test bench 2, a first movable frame 21, a second movable frame 22, a supporting installation frame 23, a test mechanism 3, an axial force measuring device 31, a force sensor 311, a universal flexible piece 312, a horizontal force measuring device 32, a vertical force measuring device 33, a connecting block 4, a positioning frame 5, a standard force sensor 6 and a fixed bench 7.
Detailed Description
The nine component force test bed for the engine comprises a fixed test bed 1, a movable test bed 2 and a test mechanism 3, wherein the movable test bed 2 comprises a first movable frame 21, a second movable frame 22 and a support mounting frame 23, the first movable frame 21 and the second movable frame 22 are mutually parallel, the support mounting frame 23 is arranged between the first movable frame 21 and the second movable frame 22, the support mounting frame 23 is respectively and fixedly connected with the first movable frame 21 and the second movable frame 22, a connecting block 4 is arranged on the fixed test bed 1, the test mechanism 3 comprises an axial force measuring device 31, a horizontal force measuring device 32 and a vertical force measuring device 33,
the three axial force measuring devices 31 are arranged, the three axial force measuring devices 31 are parallel to the middle support mounting frame 23, the three axial force measuring devices 31 are arranged between the fixed test bench 1 and the movable test bench 2, the connecting lines of the distribution points of the three axial force measuring devices 31 are isosceles triangles,
the three horizontal force measuring devices 32 are arranged, the three horizontal force measuring devices 32 are horizontally arranged and are perpendicular to the supporting installation frame 23, the three horizontal force measuring devices 32 are arranged between the fixed test bench 1 and the movable test bench 2, the connecting lines of the arrangement points of the three horizontal force measuring devices 32 are isosceles triangles,
the three vertical force measuring devices 33 are arranged, the three vertical force measuring devices 33 are all arranged vertically, the three vertical force measuring devices 33 are arranged between the fixed test bench 1 and the movable test bench 2, the connecting lines of the arrangement points of the three vertical force measuring devices 33 are isosceles triangles,
when in use, the axial force measuring device 31, the horizontal force measuring device 32 and the vertical force measuring device 33 can respectively measure the forces in all directions of the engine, so that all moment conditions in the running process of the engine can be measured in a summarizing way, a rigid body balance principle is utilized, a plurality of constraints are properly arranged, and 6 degrees of freedom (3 movements and 3 rotations) of a limit value test product are in a static balance state and are balanced according to rigid body stress
By measuring each component of the thrust vector, three components and component moment sizes, eccentric angles and eccentric distances of the thrust vector on a movable frame coordinate system are solved.
Preferably, the fixed test bench 1 is provided with a plurality of locating frames 5, and the locating frames 5 are respectively connected and arranged between the fixed test bench 1 and the movable test bench 2, and can limit the position of the movable test bench 2 through a limit, so that the engine is ensured not to drive the movable test bench 2 to deflect and deform integrally in the running process.
In order to improve the moment presentation of the engine in the running process, a plurality of standard force sensors 6 are arranged, the plurality of standard force sensors 6 are respectively arranged between the fixed test bench 1 and the movable test bench 2, stress conditions in the standing state are detected through the standard force sensors 6, and an actual stress value is calculated by comparing detection data of the test mechanism 3 and the standard force sensors 6.
The three first movable frames 21 are respectively provided with a fixed table 7, the fixed table 7 is provided with a fastening piece, and when in use, the engine is arranged in the movable test table 2 and then fastened by the fastening piece, so that the engine is fixed.
In order to ensure that the test mechanism 3 accurately measures the operation stress value of the engine, the axial force measuring device 31, the horizontal force measuring device 32 and the vertical force measuring device 33 have the same structure, the axial force measuring device 31 consists of a force sensor 311 and three universal flexible pieces 312, the upper end and the lower end of the force sensor 311 are respectively provided with one universal flexible piece 312, the upper end and the lower end of the force sensor 311 are connected with the movable test table 2 or the fixed test table 1 through the universal flexible pieces 312, so that the movable test table 2 is driven to move in a certain range when the engine operates, the stress value of the engine is measured,
the gimbaled flexure 312 is comprised of two sets of main leaf springs, which are arranged in a cross-wise, perpendicular arrangement with each other, providing deflection about one direction, respectively, and 4 support leaf springs, the resultant motion of which is gimbaled. The universal winding part has the advantages that: (1) The efficiency is high, and high bearing capacity and low rotation rigidity can be simultaneously obtained; (2) The ball joint is close to an ideal ball joint without friction, intermittence and invariable rotation center; (3) Compact structure, small volume, good dynamic performance, good stability, safety and reliability.
When the engine is used, the engine is installed in the movable test bench 2, the air inlet end of the engine is positioned at one side close to the first movable frame 21, the output end of the engine is positioned at one side close to the second movable frame 22, the engine is fixed through the fixed bench 7, calibration is carried out through the standard force sensor 6 after the installation of the engine is completed, so that the stress value between the test bench 1 and the movable test bench 2 is fixed when the engine is in a static state, the engine is started after the preparation process is completed, thrust is generated after the engine operates, the power is transmitted to the movable test bench 2 through the engine, the power on the movable test bench 2 is transmitted to the force sensor 311 through the universal flexible piece 312, the power is transmitted to the universal flexible piece 312 on the other side from the force sensor 311, the power is transmitted to the fixed test bench 1 through the universal flexible piece 312 on the other side, the power of the other side is detected through the force sensor 311 at the moment, then the power of the engine is detected through the force sensor 311, the power of the engine is detected through the force sensor 6, the thrust vector can be simulated when the stress data on the three axial force sensors 31, the three horizontal force sensors 32 and the three vertical force sensors 33 are combined, the thrust vectors can be simulated during the operation, and the thrust force vectors are calculated, and the thrust force vectors can be solved, and the thrust force vectors and the eccentric force component forces and the force component forces are large and eccentric moment component and small in the force component and the moment of the force component are calculated on the coordinate system.
According to the position state of the test product during installation, two horizontal and vertical multi-component force measuring methods are provided, wherein the two methods are beneficial to measuring component force, especially axial and horizontal component force, and the other method is beneficial to measuring horizontal and lateral component force by thrust eccentricity, and are not influenced by the weight and the change of the test product.
The test bed only needs to measure three component forces of a thrust vector, does not relate to moment, thrust eccentricity and eccentric angle measurement, and also considers the characteristic that the gravity center is basically unchanged when the aeroengine works, and the stability and the stress rationality of the test bed structure, and is designed to adopt a seven component force test bed structure.
For the seven-component force test bench, 2 testing mechanisms 3 are arranged in the main thrust direction, 2 testing mechanisms 3 are arranged in the horizontal lateral force direction, and 3 testing mechanisms 3 are arranged in the vertical lateral force direction;
wherein: px, py, pz: a component of an engine thrust vector P;
f1 to F6: the force measurement value of the working sensor is set to be positive when being pulled and negative when being pressed;
mx, my, mz: the component of the pushing moment of the engine is determined to be in a positive direction according to a right-hand spiral rule;
w: gravity of the engine;
lm: the horizontal distance between the center of gravity of the engine and the front end face of the engine;
l, R: the working sensor arrangement geometry;
xP, yp: the engine thrust vector P intersects the vertical plane passing through the center of gravity of the engine.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "plurality" is three or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of the three elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the description of the present utility model, a description of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. Nine component test bench of engine, its characterized in that, including fixed testboard (1), activity testboard (2) and accredited testing organization (3), activity testboard (2) are including first movable frame (21), second movable frame (22) and support mounting bracket (23), first movable frame (21) and second movable frame (22) parallel arrangement each other, support mounting bracket (23) connect and set up make first movable frame (21), second movable frame (22) and the concatenation of support mounting bracket (23) be the rectangle framework between first movable frame (21) and second movable frame (22), accredited testing organization (3) set up between fixed testboard (1) and activity testboard (2).
2. An engine nine-component test stand according to claim 1, characterized in that the test mechanism (3) comprises an axial force measuring device (31), a horizontal force measuring device (32) and a vertical force measuring device (33),
the three axial force measuring devices (31) are arranged, the three axial force measuring devices (31) are parallel to the middle supporting installation frame (23), the three axial force measuring devices (31) are arranged between the fixed test bench (1) and the movable test bench (2), the connecting lines of the arrangement points of the three axial force measuring devices (31) are isosceles triangles,
the three horizontal force measuring devices (32) are arranged, the three horizontal force measuring devices (32) are horizontally arranged and are perpendicular to the supporting installation frame (23), the three horizontal force measuring devices (32) are arranged between the fixed test bench (1) and the movable test bench (2), the connecting lines of the arrangement points of the three horizontal force measuring devices (32) are isosceles triangles,
the three vertical force measuring devices (33) are arranged, the three vertical force measuring devices (33) are all arranged vertically, the three vertical force measuring devices (33) are arranged between the fixed test bench (1) and the movable test bench (2), and the connecting lines of the arrangement points of the three vertical force measuring devices (33) are isosceles triangles.
3. The nine component force test bed of an engine according to claim 2, characterized in that the fixed test bed (1) is provided with a connecting block (4), and three axial force measuring devices (31) are arranged between the test bed (2) and the connecting block (4).
4. The nine component force test bed of the engine according to claim 1, comprising a plurality of positioning frames (5), wherein the positioning frames (5) are arranged between the fixed test bed (1) and the movable test bed (2) respectively.
5. The nine-component force test bed of the engine according to claim 1, comprising a plurality of standard force sensors (6), wherein the plurality of standard force sensors (6) are arranged between the fixed test bed (1) and the movable test bed (2) respectively.
6. The nine-component force test bed for the engine according to claim 1, wherein the first movable frames (21) are provided with a fixed bed (7).
7. The nine-component force test bed of the engine according to claim 2, wherein the axial force measuring device (31), the horizontal force measuring device (32) and the vertical force measuring device (33) have the same structure, the axial force measuring device (31) is composed of a force sensor (311) and three universal flexible pieces (312), and the upper end and the lower end of the force sensor (311) are respectively provided with the universal flexible pieces (312).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222938651.8U CN219064880U (en) | 2022-11-04 | 2022-11-04 | Nine component force test bed of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222938651.8U CN219064880U (en) | 2022-11-04 | 2022-11-04 | Nine component force test bed of engine |
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| Publication Number | Publication Date |
|---|---|
| CN219064880U true CN219064880U (en) | 2023-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222938651.8U Active CN219064880U (en) | 2022-11-04 | 2022-11-04 | Nine component force test bed of engine |
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| Country | Link |
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| CN (1) | CN219064880U (en) |
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2022
- 2022-11-04 CN CN202222938651.8U patent/CN219064880U/en active Active
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