Aviation conduit rotation bending test flexure disc

Abstract

The invention relates to the technical field of aviation conduit fatigue tests, and provides an aviation conduit rotation bending test flexural disc, which is provided with a self-aligning bearing, a basic disc and a bearing seat, a joint at one end of an aviation conduit is inserted into an inner hole of the self-aligning bearing, and a joint at the other end of the aviation conduit is mounted on an aviation conduit rotation bending fatigue test mounting device. The aviation conduit rotation bending fatigue test installation device is installed on a workbench, a basic disc is fixedly installed at one end of a rotating shaft through an installation hole, the rotating shaft is connected with a synchronous belt, the synchronous belt is connected with a motor, the motor is arranged in a headstock, the headstock is installed on the workbench, and a bearing seat is assembled with the outer diameter of a self-aligning bearing. The bearing seat is arranged on one side of the basic disc in a position-adjustable mode and can move relative to the basic disc to generate eccentricity during position adjustment, so that the aviation conduit is subjected to bending force, and the reasonability, reliability and safety of the flexure disc structure are improved.

Description

Technical Field

[0001] The invention relates to the fields of fluid pressure test and rotation bending fatigue test of aviation duct components, and in particular to an installation device for rotation bending fatigue test of aviation ducts. Background Art

[0002] Bending fatigue failure is a form of failure of aviation ducts. In order to improve the reliability of the design of aviation duct components, the use of a rotary bending fatigue tester to measure the fatigue life of aviation duct components under a certain stress state is an important technical means to study the fatigue fracture of aviation duct components. According to the test requirements described in the relevant test standards for aviation ducts, the head seat end is adjusted for deflection, a certain bending moment is applied to the aviation duct, and at the same time, high-speed rotation torque can be transmitted to the aviation duct for a long time, that is, aviation duct rotation bending fatigue. The bending stress value applied to the aviation duct is very critical, which determines the accuracy of the final test data. For the flexure disk that rotates at high speed and for a long time, the rationality, reliability and safety requirements of its structure are huge challenges.

[0003] In summary, in the existing aviation duct bending fatigue test technology, the flexure disk that applies bending stress to the aviation duct has technical problems such as great challenges in structural rationality, reliability, and safety. Summary of the invention

[0004] The purpose of the present invention is to at least solve the deficiencies in the prior art to a certain extent, and to provide a flexure disk for a rotary bending test of an aviation catheter, so as to improve the rationality, reliability and safety of the flexure disk structure, to achieve a precise bending moment applied to the aviation catheter during a rotary bending fatigue test of the aviation catheter, and to transmit a high-speed rotary torque to the aviation catheter for a long time, so as to complete a precise rotary bending fatigue test of the aviation catheter.

[0005] The aviation catheter rotation bending test flexure disk provided by the present invention is installed on a head seat, and the head seat is installed on a workbench. The aviation catheter rotation bending test flexure disk comprises:

[0006] A self-aligning bearing, the inner hole of which is inserted into a joint at one end of an aviation conduit, the joint at the other end of the aviation conduit is mounted on an aviation conduit rotation bending fatigue test installation device, and the aviation conduit rotation bending fatigue test installation device is mounted on the workbench;

[0007] The base plate is fixed to one end of the rotating shaft through the mounting hole, the rotating shaft is connected to the synchronous belt, the synchronous belt is connected to the motor, the motor is arranged inside the head seat, and the head seat is mounted on the workbench:

[0008] A bearing seat is assembled with the outer diameter of the self-aligning bearing; the bearing seat is arranged on one side of the base plate in an adjustable position, and can move relative to the base plate to produce eccentricity when the position is adjusted, so that the aviation duct is subjected to bending force.

[0009] Furthermore, the aviation catheter rotation bending test flexure disk also includes a bearing pressure cover, which is connected to the self-aligning bearing and the bearing seat to press the self-aligning bearing inside the bearing seat.

[0010] Furthermore, a scale is provided on the side of the base plate, and a pointer notch is provided on the bearing seat. When the pointer notch points to the zero scale line of the scale, it is roughly determined that the aviation duct is not subjected to bending force, or the bending force subjected to the aviation duct is lower than a preset smaller bending force.

[0011] Furthermore, the zero scale line of the ruler is located in the middle of the ruler, and the scale lines of the ruler increase with equal distances toward the left and right ends with the zero scale line as the center.

[0012] Furthermore, the scales are symmetrically located on both sides of the bearing seat.

[0013] Furthermore, when the pointer notch does not point to the zero scale line of the ruler, the bearing seat is eccentric relative to the base plate, and the aviation duct is subjected to bending force.

[0014] Furthermore, the other scale values ​​pointed to by the pointer notch other than the zero scale line of the scale reflect the geometric eccentricity of the bearing seat relative to the base plate.

[0015] Furthermore, the aviation catheter rotation bending test flexure disk also includes bolts and T-nuts matched with the bolts; the bolts and the T-nuts connect the bearing seat with the base disk.

[0016] Furthermore, when the position of the bearing seat needs to be adjusted to allow the aviation duct to withstand bending force, the bolts and the T-nuts are first loosened, and after the position adjustment of the bearing seat is completed, the bolts and the T-nuts are first tightened.

[0017] Furthermore, the aviation catheter rotation bending test flexure disk also includes a displacement adjustment bolt and a bolt support; the bolt support is connected to the base disk, and the displacement adjustment bolt is connected to the bolt support and the bearing seat; when the position of the bearing seat is adjusted, the displacement adjustment bolt is adjusted, and the displacement adjustment bolt pushes or pulls the bearing seat, so that the bearing seat moves relative to the base disk to produce eccentricity, so that the aviation catheter is subjected to bending force.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The invention provides a flexure disk for a rotary bending test of an aviation catheter. The inner hole of the flexure disk is inserted into a joint at one end of the aviation catheter. The joint at the other end of the aviation catheter is installed on a mounting device for a rotary bending fatigue test of the aviation catheter. The mounting device for a rotary bending fatigue test of the aviation catheter is installed on the workbench. The base disk is fixedly mounted on one end of a rotating shaft through a mounting hole. The rotating shaft is connected to a synchronous belt. The synchronous belt is connected to a motor. The motor is arranged inside a head seat. The head seat is installed on the workbench. The bearing seat is assembled with the outer diameter of the flexure disk. The bearing seat is arranged on one side of the base disk in a positionally adjustable manner. When the position is adjusted, the bearing seat can move relative to the base disk to generate eccentricity, so that the aviation catheter is subjected to a bending force, thereby improving the rationality, reliability and safety of the flexure disk structure. When the rotary bending fatigue test of the aviation catheter is implemented, a precise bending moment is applied to the aviation catheter. At the same time, a high-speed rotating torque can be transmitted to the aviation catheter for a long time, so as to complete a precise test of the rotary bending fatigue of the aviation catheter. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 It is a schematic diagram of an assembly structure of a flexure disc for a rotary bending test of an aviation duct according to an embodiment of the present invention;

[0022] Figure 2 It is another schematic diagram of the assembly structure of the flexure disc for the rotational bending test of an aviation catheter according to an embodiment of the present invention;

[0023] Figure 3 The present invention is a schematic diagram of a use state of a flexure disk for a rotary bending test of an aviation catheter according to an embodiment of the present invention.

[0024] Description of reference numerals:

[0025] 1. Aviation duct rotation bending fatigue test installation device;

[0026] 2. Aviation catheter;

[0027] 3. Flexure plate for rotating bending test of aviation duct; 301. Bearing gland; 302. Bearing seat guide groove; 303. Displacement adjustment bolt; 304. Bolt support; 305. Self-aligning bearing; 306. Bearing seat; 307. Bolt; 308. Ruler; 309. T-nut guide groove; 310. Base plate; 311. T-nut; 312. Mounting hole;

[0028] 4. Head seat;

[0029] 5. Workbench. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar methods or methods having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 3 The embodiment of the present invention provides an aviation catheter rotation bending test flexure disk 3, which is installed on a head seat 4, and the head seat 4 is installed on a workbench 5. The aviation catheter rotation bending test flexure disk 3 includes: a self-aligning bearing 305, a base plate 310 and a bearing seat 306; the inner hole of the self-aligning bearing 305 is inserted into the joint at one end of the aviation catheter 2, and the joint at the other end of the aviation catheter 2 is installed on the aviation catheter rotation bending fatigue test installation device 1, and the aviation catheter rotation bending fatigue test installation device 1 is installed on the workbench 5; the base plate 310 is installed and fixed on one end of the rotating shaft through the installation hole 312, and the rotating shaft is connected to the synchronous belt, and the synchronous belt is connected to the motor, and the motor is arranged inside the head seat 4, and the head seat 4 is installed on the workbench 5; the bearing seat 306 is assembled with the outer diameter of the self-aligning bearing 305; the bearing seat 306 is arranged on one side of the base plate 310 in a position-adjustable manner, and can move relative to the base plate 310 to produce eccentricity when the position is adjusted, so that the aviation catheter 2 is subjected to bending force.

[0032] It should be noted that, in this embodiment, the combination of the self-aligning bearing 305 and the bearing seat 306 can provide a self-aligning function, so that the catheter is always kept in a reasonable force position during rotation and bending. In addition, the structure of the base plate 310, the rotating shaft and the synchronous belt drive motor makes the transmission path of the rotating power simple and stable, which is conducive to the improvement of reliability and durability. In addition, the base plate 310 produces eccentricity relative to the self-aligning bearing 305 through the adjustable bearing seat 306, so that the aviation catheter 2 can generate a bending moment in a controlled manner when rotating. The bending moment can be fine-tuned under different test conditions to meet the needs of aviation catheters 2 of different specifications and materials, thereby achieving the goal of applying precise bending moment to the aviation catheter 2. In addition, the rotating shaft is connected to the motor through a synchronous belt. This transmission method has high transmission efficiency and stability, can reduce sliding friction, and support the catheter to achieve long-term stable torque transmission during high-speed rotation, which helps to maintain consistent torque output in fatigue tests of continuous rotation, and ensure the accuracy and stability of test data. It is understandable that in this embodiment, the combination of the synchronous belt, the motor, the self-aligning bearing 305 and the eccentric adjustment function enables the flexure disk to apply uniform and precise bending and rotation fatigue stress to the aviation duct 2. Through these structures and adjustment functions, the flexure disk can continuously simulate the stress conditions of the aviation duct 2 in the actual working environment at a high speed, thereby effectively evaluating its fatigue performance and ensuring the accuracy and reliability of the test.

[0033] In some preferred embodiments, the aviation duct rotary bending test flexure disk 3 also includes a bearing pressure cover 301, and the bearing pressure cover 301 is connected to the self-aligning bearing 305 and the bearing seat 306, and the self-aligning bearing 305 is pressed tightly inside the bearing seat 306. It should be noted that in this embodiment, the bearing pressure cover 301 fixes the self-aligning bearing 305 inside the bearing seat 306 so that it maintains a stable position during operation. During the rotary bending test, due to the high-frequency vibration and rotational torque, the bearing may be slightly displaced or loosened, and the pressure cover can effectively prevent this situation and ensure that the bearing always remains stable in the bearing seat 306. In addition, by tightly pressing the self-aligning bearing 305 inside the bearing seat 306 through the bearing pressure cover 301, the small gap that may be generated between the bearing and the bearing seat 306 can be reduced. Eliminating these gaps helps to reduce vibration and wear during operation, thereby improving the overall durability and reliability of the device and extending the service life of the test equipment.

[0034] In some preferred embodiments, a scale 308 is provided on the side of the base plate 310, and a pointer notch is provided on the bearing seat 306. When the pointer notch points to the zero scale line of the scale 308, it is roughly determined that the aviation duct 2 is not subjected to bending force, or the bending force subjected to it is lower than the preset smaller bending force. Further, the zero scale line of the scale 308 is located in the middle of the scale 308, and the scale lines of the scale 308 increase equidistantly toward the left and right ends with the zero scale line as the center. Further, the scale 308 is symmetrically located on both sides of the bearing seat. Further, when the pointer notch does not point to the zero scale line of the scale 308, the bearing seat 306 is eccentric relative to the base plate 310, and the aviation duct 2 is subjected to bending force. Further, the other scale values ​​other than the zero scale line of the scale 308 pointed by the pointer notch reflect the geometric eccentricity of the bearing seat 306 relative to the base plate 310. It should be noted that when the pointer gap points to the zero scale line of the scale 308, it can be roughly determined that the aviation catheter 2 is not subjected to bending force, or the bending force is relatively small. The zero scale line of the scale 308 is set in the middle of the scale 308, and the alignment of the pointer gap and the zero scale line of the scale 308 is used as a reference, so that the operator can intuitively judge whether the current aviation catheter 2 is in a state of no bending force or low bending force. In addition, the scale of the scale 308 is symmetrically distributed with the zero scale line as the center, and increases at equal distances to the left and right ends. Such a symmetrical design facilitates the control of the magnitude and direction of the bending force in the left and right directions. The operator can determine and adjust the direction and magnitude of the bending force according to the offset direction and distance of the pointer gap on the scale 308, making the test more flexible. In addition, the scale 308 is arranged symmetrically, and the operator can observe and read the scale 308 value from different angles of the base plate 310, realizing the convenience of torque measurement. In addition, when the pointer gap points to other scale values ​​of the ruler 308, the ruler 308 can quantitatively display the eccentricity of the bearing seat 306 relative to the base plate 310. Since the eccentricity directly affects the magnitude of the bending force, the corresponding geometric eccentricity can be obtained through the reading of the ruler 308, which is convenient for the operator to make accurate eccentricity adjustments under different test conditions to ensure that the applied bending moment meets the test requirements. At the same time, the combination of the ruler 308 and the pointer can provide a visual positioning method, so that the operator does not need to rely on other complex measuring tools when adjusting the position of the bearing seat 306, and can quickly complete the eccentricity adjustment, thereby simplifying the test preparation work and improving the operation efficiency.

[0035] In some preferred embodiments, the aviation conduit rotation bending test flexure disk 3 further includes a bolt 307 and a T-nut 311 matched with the bolt 307; the bolt 307 and the T-nut 311 connect the bearing seat 306 to the base disk 310. Further, when the position of the bearing seat 306 needs to be adjusted to allow the aviation conduit 2 to withstand the bending force, the bolt 307 and the T-nut 311 are first loosened, and after the position adjustment of the bearing seat 306 is completed, the bolt 307 and the T-nut 311 are first tightened. It should be noted that the bolt 307 and the T-nut 311 can firmly connect the bearing seat 306 and the base disk 310, ensuring that the connection is stable during normal testing and will not loosen due to high-speed rotation and bending force. By loosening the bolts 307 and the T-nuts 311, the operator can easily move the position of the bearing seat 306 for adjustment, so that when the eccentricity needs to be changed, the position of the bearing seat 306 can be adjusted quickly and conveniently, thereby applying or adjusting the bending force on the aviation duct 2. After the position adjustment is completed, tightening the bolts 307 and the T-nuts 311 can effectively fix the position of the bearing seat 306, prevent displacement during the test, and ensure the stability of the stress state of the aviation duct 2 and the consistency of the test results. In addition, in this embodiment, the connection method of the bolts 307 and the T-nuts 311 is used to make the operation process simple and clear. The loosening and tightening actions are easy to operate, which can reduce possible errors in the adjustment process and improve the safety and efficiency of the operation.

[0036] In some preferred embodiments, the aviation catheter rotation bending test flexure disk 3 also includes a displacement adjustment bolt 303 and a bolt support 304; the bolt support 304 is connected to the base disk 310, and the displacement adjustment bolt 303 is connected to the bolt support 304 and the bearing seat 306; when the position of the bearing seat 306 is adjusted, the displacement adjustment bolt 303 is adjusted, and the displacement adjustment bolt 303 pushes or pulls the bearing seat 306, so that the bearing seat 306 moves relative to the base disk 310 to produce eccentricity, so that the aviation catheter 2 is subjected to bending force. It should be noted that in this embodiment, the displacement adjustment bolt 303 can accurately control the moving distance of the bearing seat 306 relative to the base disk 310 through a rotating operation, thereby generating the required eccentricity. This precise control mechanism can ensure that the bending force on the aviation catheter 2 can be fine-tuned according to predetermined requirements, thereby improving the test accuracy. In addition, by adjusting the length of the displacement adjustment bolt 303, the eccentricity of the bearing seat 306 can be directly changed, thereby controlling the bending force on the catheter, thereby allowing the bending force to be flexibly adjusted under different test conditions to adapt to different experimental requirements, and providing more controllable parameters for the test of the aviation catheter 2. Moreover, the adjustment of the displacement adjustment bolt 303 is a simple adjustment method. During the adjustment process, the operator only needs to rotate the bolt 307 to achieve the eccentric movement of the bearing seat 306, without the need for complex disassembly or repositioning of the equipment, thereby simplifying the adjustment process and improving the operating efficiency. In addition, in this embodiment, through the connection design of the bolt support 304 and the displacement adjustment bolt 303, the degree of freedom between the bearing seat 306 and the base plate 310 can be effectively reduced, the overall stability of the device can be enhanced, and the looseness and fatigue damage caused by vibration during the test can be reduced, thereby improving the durability of the device. Since the displacement adjustment bolt 303 can be rotated step by step for precise fine-tuning, it is convenient to repeat the same adjustment under different test conditions, so that each adjustment is consistent, which helps to ensure the repeatability of the experiment and the reliability of the test data.

[0037] In some further preferred embodiments, the aviation catheter rotation bending test flexure disk 3 also includes a T-nut guide groove 309 arranged on the back of the base disk 310, and the T-nut 311 is located in the T-nut guide groove 309, and the T-nut guide groove 309 guides the T-nut 311 during the process of loosening or tightening the T-nut 311. It should be noted that in this embodiment, the T-nut guide groove 309 provides a limited motion trajectory for the T-nut 311, plays a guiding role in the process of loosening or tightening, ensures that the nut moves in the correct position along the predetermined direction, avoids deviation from the track or shaking, and improves the accuracy and stability of the nut operation. In addition, the T-nut guide groove 309 can effectively prevent sliding or rotational dislocation caused by vibration or external force during the loosening and tightening operation, so that the nut always remains in the appropriate position, will not be offset due to the loosening and tightening action, and reduces the error in the installation and adjustment process. At the same time, the T-nut guide groove 309 can help the operator quickly find the best position for tightening or loosening, without repeated adjustment and positioning, thereby shortening the adjustment time and improving the operation efficiency and convenience. In addition, the T-nut guide groove 309 can ensure that the T-nut 311 is firmly connected between the base plate 310 and the bearing seat 306, ensure that the force is evenly distributed after tightening, and avoid loosening or deviation of the equipment due to uneven force.

[0038] In some further preferred embodiments, the aviation catheter rotation bending test flexure disk 3 also includes a bearing seat guide groove 302, and the bearing seat guide groove 302 is located between the bolt support 304 and the bearing seat 306. When adjusting the displacement adjustment bolt 303, the displacement adjustment bolt 303 pushes or pulls the bearing seat 306, so that the bearing seat 306 moves along the bearing seat guide groove 302, moves relative to the base plate 310 to produce eccentricity, and the aviation catheter 2 is subjected to bending force. It should be noted that the bearing seat guide groove 302 is a fixed movement path for the bearing seat 306, ensuring that when adjusting the displacement adjustment bolt 303, the bearing seat 306 will only move in a specific direction, avoiding position offset or shaking, improving the accuracy of adjustment, and making the adjustment of the eccentricity more reliable. The bearing seat guide groove 302 enables the bearing seat 306 to move along a predetermined route during the adjustment process, thereby ensuring the controllability of the eccentricity. By limiting the freedom of the bearing seat 306 through the bearing seat guide groove 302, the bending force and direction of the aviation duct 2 can be accurately controlled to meet the test requirements. At the same time, the bearing seat guide groove 302 can simplify the operation process, ensuring that the operator does not need to repeatedly align or measure when adjusting the position of the bearing seat 306, quickly realize eccentric adjustment, and improve operation efficiency.

[0039] The above is a description of the technical solution provided by the present invention. For those skilled in the art, according to the ideas of the embodiments of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A flexure disc for rotating bending test of aviation catheter, mounted on a head seat, wherein the head seat is mounted on a workbench, characterized in that: The aviation conduit rotation bending test flexure disk includes: A self-aligning bearing, the inner hole of which is inserted into a joint at one end of an aviation conduit, the joint at the other end of the aviation conduit is mounted on an aviation conduit rotation bending fatigue test installation device, and the aviation conduit rotation bending fatigue test installation device is mounted on the workbench; The base plate is fixed to one end of the rotating shaft through the mounting hole, the rotating shaft is connected to the synchronous belt, the synchronous belt is connected to the motor, the motor is arranged inside the head seat, and the head seat is mounted on the workbench: A bearing seat is assembled with the outer diameter of the self-aligning bearing; the bearing seat is arranged on one side of the base plate in an adjustable position, and can move relative to the base plate to produce eccentricity when the position is adjusted, so that the aviation duct is subjected to bending force.

2. The aviation conduit rotation bending test flexure disk as claimed in claim 1, characterized in that: It also includes a bearing pressure cover, which is connected to the self-aligning bearing and the bearing seat to press the self-aligning bearing into the interior of the bearing seat.

3. The aviation conduit rotation bending test flexure disk as claimed in claim 1, characterized in that: A scale is arranged on the side of the base plate, and a pointer notch is arranged on the bearing seat. When the pointer notch points to the zero scale line of the scale, it is roughly determined that the aviation duct is not subjected to bending force, or the bending force subjected to the aviation duct is lower than the preset smaller bending force.

4. The aviation conduit rotation bending test flexure disk as claimed in claim 3, characterized in that: The zero scale line of the ruler is located in the middle of the ruler, and the scale lines of the ruler increase with equal distances toward the left and right ends with the zero scale line as the center.

5. The aviation conduit rotation bending test flexure disk as claimed in claim 3, characterized in that: The scales are symmetrically located on both sides of the bearing seat.

6. The aviation conduit rotation bending test flexure disk as claimed in claim 3, characterized in that: When the pointer notch does not point to the zero scale line of the ruler, the bearing seat is eccentric relative to the base plate, and the aviation duct is subjected to bending force.

7. The aviation conduit rotation bending test flexure disk as claimed in claim 6, characterized in that: The other scale values ​​pointed to by the pointer notch other than the zero scale line of the scale reflect the geometric eccentricity of the bearing seat relative to the base plate.

8. The aviation conduit rotation bending test flexure disk according to any one of claims 1 to 7, characterized in that: The aviation conduit rotation bending test flexure disk also includes bolts and T-nuts matched with the bolts; the bolts and the T-nuts connect the bearing seat with the base disk.

9. The aviation conduit rotation bending test flexure disk according to claim 8, characterized in that: When the position of the bearing seat needs to be adjusted to allow the aviation duct to withstand bending force, the bolts and the T-nuts are first loosened, and after the position adjustment of the bearing seat is completed, the bolts and the T-nuts are first tightened.

10. The aviation conduit rotation bending test flexure disk according to claim 9, characterized in that: The aviation catheter rotation bending test flexure disk also includes a displacement adjustment bolt and a bolt support; the bolt support is connected to the base disk, and the displacement adjustment bolt is connected to the bolt support and the bearing seat; when the position of the bearing seat is adjusted, the displacement adjustment bolt is adjusted, and the displacement adjustment bolt pushes or pulls the bearing seat, so that the bearing seat moves relative to the base disk to produce eccentricity, so that the aviation catheter is subjected to bending force.

Images