CN219064881U - Seven component force test bed for engine - Google Patents
Seven component force test bed for engine Download PDFInfo
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- CN219064881U CN219064881U CN202222952672.5U CN202222952672U CN219064881U CN 219064881 U CN219064881 U CN 219064881U CN 202222952672 U CN202222952672 U CN 202222952672U CN 219064881 U CN219064881 U CN 219064881U
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Abstract
The utility model discloses an engine seven-component force test bed, which relates to the technical field of engine test equipment and comprises a mounting fixed frame, a mounting movable frame and a force measuring assembly, wherein the mounting movable frame comprises a fixed front frame, a fixed rear frame and a middle support rod, the fixed front frame and the fixed rear frame are mutually arranged in parallel, the middle support rod is arranged between the fixed front frame and the fixed rear frame, the middle support rod is respectively and fixedly connected with the fixed front frame and the fixed rear frame, and the force measuring assembly comprises two axial force measuring devices, two horizontal force measuring devices and three vertical force measuring devices.
Description
Technical Field
The utility model relates to the technical field of engine test equipment, in particular to an engine seven-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 seven-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 install in the movable frame, then start the engine, the power transmission that the engine operation in-process produced is in to the dynamometry subassembly, gathers the pulling force numerical value that the engine operation in-process produced through the dynamometry subassembly to this operation data that obtains the engine.
The seven component force test bed for the engine comprises a mounting fixed frame, a mounting movable frame and a force measuring assembly, wherein the mounting movable frame comprises a fixed front frame, a fixed rear frame and a middle supporting rod, the fixed front frame and the fixed rear frame are mutually arranged in parallel, the middle supporting rod is arranged between the fixed front frame and the fixed rear frame, the middle supporting rod is respectively and fixedly connected with the fixed front frame and the fixed rear frame, the force measuring assembly comprises an axial force measuring device, a horizontal force measuring device and a vertical force measuring device,
in order to be able to effectively return the tension parameters during engine operation:
the two axial force measuring devices are arranged, the two axial force measuring devices are parallel to the middle supporting rod, one ends of the two axial force measuring devices are connected to the mounting movable frame, the other ends of the two axial force measuring devices are connected to the mounting fixed frame,
the two horizontal force measuring devices are horizontally arranged and perpendicular to the middle supporting rod, one ends of the two horizontal force measuring devices are connected to the mounting movable frame, the other ends of the two axial force measuring devices are connected to the mounting fixed frame,
the vertical dynamometer sets up three, and three vertical dynamometer all is vertical setting, and the top of three vertical dynamometer is connected to the installation fixed frame, and the lower extreme of two vertical dynamometers is connected to fixed front frame, and the lower extreme of one vertical dynamometer is connected to fixed back frame.
Further, be provided with the axial connecting block on the installation fixed frame, the one end of two axial dynamometers is connected to the axial connecting block on, can be convenient for the axial dynamometer through the axial connecting block with install and move the connection between the frame.
Further, be provided with a plurality of spacing support on the installation fixed frame, a plurality of spacing support connects respectively and sets up between installation fixed frame and installation movable frame, can move the installation through spacing support and carry out the connection support between frame and the installation fixed frame to the stability that the engine laid in this application has been guaranteed.
Further, the device also comprises a plurality of standard force sensors, wherein the plurality of standard force sensors are respectively arranged between the fixed mounting frame and the movable mounting frame, the standard force can be obtained through the standard force sensors, and the accurate tension of the engine is calculated by comparing the standard force with the detection data of the force measuring assembly.
Furthermore, two fixed front frames are provided with a fixed table, and the connection between the engine and the movable mounting frame can be ensured through the fixed table.
Furthermore, the axial force measuring device, the horizontal force measuring device and the vertical force measuring device have the same structure, the axial force measuring device consists of a force sensor and two 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 two universal flexible pieces.
Compared with the prior art, the utility model has the advantages that:
the power is transmitted to the installation movable frame through the engine, power on the installation movable frame is transmitted to the force sensor through the universal flexible piece, and is transmitted to the universal flexible piece on the other side from the force sensor, the universal flexible piece on the other side transmits power to the installation fixed frame, the power of the engine is detected through the force sensor at the moment, then the system detects the power of the engine by combining the standard force sensor, at the moment, the thrust vector can be simulated when the engine is operated by combining the stress data of the two axial force measuring devices, the two horizontal force measuring devices and the three vertical force measuring devices, and the three component force and component force moment, the eccentric angle and the eccentric distance of the thrust vector on the movable frame coordinate system are solved through measuring each component force of the thrust vector.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a seven-component test bed;
FIG. 2 is a schematic perspective view of a mounting bracket;
FIG. 3 is a front view of the mounting bracket;
FIG. 4 is a top view of the mounting bracket;
FIG. 5 is a side view of the mounting bracket;
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 seven-component test bed.
Reference numerals:
the device comprises a fixed frame 1, a movable frame 2, a fixed front frame 21, a fixed rear frame 22, a middle supporting rod 23, a force measuring assembly 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, an axial connecting block 4, a limiting support 5, a standard force sensor 6 and a fixed table 7.
Detailed Description
The seven component force test bed for the engine comprises a mounting fixed frame 1, a mounting movable frame 2 and a force measuring assembly 3, wherein the mounting movable frame 2 comprises a fixed front frame 21, a fixed rear frame 22 and a middle supporting rod 23, the fixed front frame 21 and the fixed rear frame 22 are mutually arranged in parallel, the middle supporting rod 23 is arranged between the fixed front frame 21 and the fixed rear frame 22, the middle supporting rod 23 is respectively and fixedly connected with the fixed front frame 21 and the fixed rear frame 22, an axial connecting block 4 is arranged on the mounting fixed frame 1, the force measuring assembly 3 comprises an axial force measuring device 31, a horizontal force measuring device 32 and a vertical force measuring device 33,
the two axial force measuring devices 31 are arranged, the two axial force measuring devices 31 are parallel to the middle supporting rod 23, one ends of the two axial force measuring devices 31 are connected to the mounting movable frame 2, the other ends of the two axial force measuring devices 31 are connected to the axial connecting block 4, the axial force measuring devices 31 are axially parallel to the arrangement of the engine, the axial force value of the engine can be measured through the axial force measuring devices 31,
the two horizontal force measuring devices 32 are arranged, the two horizontal force measuring devices 32 are horizontally arranged and are perpendicular to the middle supporting rod 23, one ends of the two horizontal force measuring devices 32 are connected to the mounting movable frame 2, the other ends of the two axial force measuring devices 31 are connected to the mounting fixed frame 1, the horizontal force measuring devices 32 can measure the force value of the engine in the horizontal direction,
the three vertical force measuring devices 33 are arranged, the three vertical force measuring devices 33 are all arranged vertically, the tops of the three vertical force measuring devices 33 are connected to the mounting fixed frame 1, the lower ends of the two vertical force measuring devices 33 are connected to the fixed front frame 21, the lower end of one vertical force measuring device 33 is connected to the fixed rear frame 22, the vertical force measuring devices 33 can measure the force value of the engine in the vertical direction,
when the engine is in use, the axial force measuring device 31, the horizontal force measuring device 32 and the vertical force measuring device 33 are arranged to 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.
Preferably, the installation fixed frame 1 is provided with a plurality of spacing brackets 5, and the spacing brackets 5 of a plurality of are connected respectively and are set up between the installation fixed frame 1 and the installation movable frame 2, can carry out spacingly to the position of the installation movable frame 2 between spacing to guarantee that the engine can not drive the installation movable frame 2 whole skew deformation in the operation 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 mounting frame 1 and the movable mounting frame 2, stress conditions in the standing state are detected through the standard force sensors 6, and actual stress values are calculated by comparing detection data of the force measuring assemblies 3 and the standard force sensors 6.
The two fixed front frames 21 are respectively provided with a fixed table 7, the fixed table 7 is provided with a fastening piece, the engine is arranged in the movable mounting frame 2 when in use, and then the engine is fastened through the fastening piece, so that the engine is fixed.
In order to ensure that the force measuring assembly 3 accurately measures the running 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 two 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 mounting frame 2 or the fixed mounting frame 1 through the universal flexible pieces 312, so that the movable mounting frame 2 is driven to move in a certain range during the running of the engine, 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 installation movable frame 2, the air inlet end of the engine is positioned at one side close to the fixed front frame 21, the output end of the engine is positioned at one side close to the fixed rear frame 22, the engine is fixed through the fixed table 7, calibration is carried out through the standard force sensor 6 after installation of the engine is completed, so that the stress value between the installation fixed frame 1 and the installation movable frame 2 when the engine is in a static state is measured, the engine is started after a preparation process is completed, thrust is generated after the engine operates, the power is transmitted to the installation movable frame 2 through the engine, the power on the installation movable frame 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 universal flexible piece 312 on the other side transmits the power to the installation fixed frame 1, at the moment, the power of the engine is detected through the force sensor 311, the system is combined with the standard force sensor 6, at the moment, the thrust vector can be simulated when the engine is operated by combining the stress data on the sides of the two axial force measuring devices 31, the two horizontal force measuring devices 32 and the three vertical force measuring devices 33, and the thrust force vectors can be calculated, and the three force component force vectors and the moment and the eccentric moment component are large and the moment component and the eccentric moment component are calculated on the three moment component and the moment component.
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 bed, 2 force measuring assemblies 3 are arranged in the main thrust direction, 2 force measuring assemblies 3 are arranged in the horizontal lateral force direction, and 3 force measuring assemblies 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 "a plurality" is two 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 communication between two 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 (6)
1. The seven-component force test bed for the engine is characterized by comprising a mounting fixed frame (1), a mounting movable frame (2) and a force measuring assembly (3), wherein the mounting movable frame (2) comprises a fixed front frame (21), a fixed rear frame (22) and a middle supporting rod (23), the fixed front frame (21) and the fixed rear frame (22) are mutually arranged in parallel, the middle supporting rod (23) is arranged between the fixed front frame (21) and the fixed rear frame (22), the middle supporting rod (23) is fixedly connected with the fixed front frame (21) and the fixed rear frame (22) respectively, the force measuring assembly (3) comprises an axial force measuring device (31), a horizontal force measuring device (32) and a vertical force measuring device (33),
the two axial force measuring devices (31) are arranged, the two axial force measuring devices (31) are parallel to the middle supporting rod (23), one ends of the two axial force measuring devices (31) are connected to the mounting movable frame (2), the other ends of the two axial force measuring devices (31) are connected to the mounting fixed frame (1),
the two horizontal force measuring devices (32) are arranged, the two horizontal force measuring devices (32) are horizontally arranged and are perpendicular to the middle supporting rod (23), one ends of the two horizontal force measuring devices (32) are connected to the mounting movable frame (2), the other ends of the two axial force measuring devices (31) are connected to the mounting fixed frame (1),
the vertical force measuring devices (33) are arranged in three, the three vertical force measuring devices (33) are arranged vertically, the tops of the three vertical force measuring devices (33) are connected to the mounting fixed frame (1), the lower ends of the two vertical force measuring devices (33) are connected to the fixed front frame (21), and the lower end of one vertical force measuring device (33) is connected to the fixed rear frame (22).
2. An engine seven-component force test bed according to claim 1, characterized in that the mounting bracket (1) is provided with an axial connection block (4), and one end of two axial force measuring devices (31) is connected to the axial connection block (4).
3. The seven-component force test bed of the engine according to claim 1, wherein a plurality of limiting brackets (5) are arranged on the installation fixed frame (1), and the limiting brackets (5) are respectively connected and arranged between the installation fixed frame (1) and the installation movable frame (2).
4. The seven-component force test bed of the engine according to claim 1, further comprising a plurality of standard force sensors (6), wherein the plurality of standard force sensors (6) are arranged, and the plurality of standard force sensors (6) are respectively arranged between the fixed mounting frame (1) and the movable mounting frame (2).
5. An engine seven component test bed according to claim 1, characterized in that both of the fixed front frames (21) are provided with a fixed bed (7).
6. The seven-component force test bed of the engine according to claim 1, 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) consists of a force sensor (311) and two 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 |
|---|---|---|---|
| CN202222952672.5U CN219064881U (en) | 2022-11-04 | 2022-11-04 | Seven component force test bed for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222952672.5U CN219064881U (en) | 2022-11-04 | 2022-11-04 | Seven component force test bed for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219064881U true CN219064881U (en) | 2023-05-23 |
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ID=86342827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222952672.5U Active CN219064881U (en) | 2022-11-04 | 2022-11-04 | Seven component force test bed for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219064881U (en) |
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2022
- 2022-11-04 CN CN202222952672.5U patent/CN219064881U/en active Active
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