Volute spiral spring quality testing device for aero-engine

Abstract

The invention discloses a volute spiral spring quality testing device for an aero-engine, and relates to the technical field of sample testing, the volute spiral spring quality testing device for the aero-engine comprises a testing machine body, and a testing platform of the testing machine body is provided with a testing mechanism used for installing and testing various samples. When a fatigue test is carried out on a volute spiral spring sample, the positions of the inner end mounting assembly and the outer end mounting assembly can be adjusted through the driving part according to the shape and size of the sample, so that the device is suitable for test mounting of the sample, does not need to be replaced and is convenient to use, the mounting time of the sample fatigue test is saved, and the sample test efficiency is improved; the sample testing device can be suitable for testing all samples within the adjusting range of the inner end installation assembly and the outer end installation assembly, the detection range of sample testing is widened, the functionality of the sample testing device is improved, and the technical problem that the functionality of a volute spiral spring sample testing device for an aero-engine is low is solved.

Description

Technical Field

[0001] The invention relates to the technical field of fatigue testing, and more specifically to a quality testing device for a spiral spring used in an aero-engine. Background Art

[0002] Volute springs play a key role in aircraft engines. Any minor quality defects may cause engine failure, which in turn affects flight safety and performance. Therefore, in order to ensure that they can meet the reliability and performance requirements in extreme working environments, the volute springs used in aircraft engines must undergo quality testing.

[0003] The existing volute spring quality testing device can only perform quality testing on a single type of volute spring. If it is necessary to test other types of volute springs, it is necessary to replace the inner end mounting joint and the outer end mounting joint, which is time-consuming and laborious. However, the existing aircraft engines include Fig.15 There are two types of spiral springs shown, and there are even more sizes and types. In the actual test of various spiral springs, it is laborious to load and unload the joints, and there are fewer types of applicable spiral springs, and the functionality is low, resulting in low efficiency in spiral spring testing and inconvenience in use. In view of this, we propose a spiral spring quality testing device for aircraft engines. Summary of the invention

[0004] The object of the present invention is to provide a quality testing device for a spiral spring for an aircraft engine, so as to solve the technical problem of low functionality of a sample testing device for a spiral spring for an aircraft engine.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A quality testing device for a scroll spring for an aircraft engine, comprising a testing machine body, a testing mechanism arranged on a testing platform of the testing machine body, the testing mechanism comprising a mounting block, an adjusting portion, an inner end portion, an outer end portion and a rotating portion; The mounting block is fixed on the testing machine body, a circular groove is provided on the top of the mounting block, and a mounting cavity is provided inside the mounting block; The adjusting part comprises a fixed ring block, the fixed ring block is fixedly arranged at the bottom end of the circular groove, and a clamping assembly is arranged on the fixed ring block; The inner end portion comprises an upper disc, which is rotatably arranged at the top of the inner edge surface of the fixed ring block, a lower disc is arranged below the upper disc, and the lower disc is rotatably connected to the fixed ring block, a centripetal slide groove A is provided on the upper disc, a centripetal groove A is provided at the top of the centripetal slide groove A, an inner end mounting component is slidably arranged on the centripetal slide groove A, an oblique guide groove A is provided on the lower disc, the bottom end of the inner end mounting component is movably connected to the oblique guide groove A, a connecting component A is provided on the upper disc, and the bottom end of the connecting component A is plugged into the top end of the lower disc; The outer end portion comprises an upper ring, which is rotatably arranged at the top of the outer edge surface of the fixed ring block, a lower ring is arranged below the upper ring, and the lower ring is rotatably connected to the fixed ring block, a centripetal slide groove B is provided on the upper ring, a centripetal groove B is provided at the top of the centripetal slide groove B, an outer end mounting component is slidably arranged on the centripetal slide groove B, an oblique guide groove B is provided on the lower ring, the bottom end of the outer end mounting component is movably connected to the oblique guide groove B, a connecting component B is provided on the upper ring, and the bottom end of the connecting component B is plug-fitted with the top end of the lower ring; Wherein, the two ends of the clamping assembly are respectively clamped and matched with the connecting assembly A and the connecting assembly B; The rotating part is arranged in the mounting block, and the rotating part has a first rotating end and a second rotating end, the first rotating end is fixedly connected to the lower disc, and the second rotating end is fixedly connected to the lower ring. The present invention adopts the structural design of the testing mechanism. When fatigue testing is performed on a scroll spring sample, the position of the inner end mounting component and the outer end mounting component can be adjusted by the driving part according to the shape and size of the sample, so that it is suitable for the test installation of the sample, and no replacement is required. It is easy to use, saves the installation time of the sample fatigue test, and improves the efficiency of the sample test. The present invention can be applied to all sample tests within the adjustment range of the inner end mounting component and the outer end mounting component, improves the detection range of the sample test, improves the functionality of the sample testing device, and solves the technical problem of low functionality of the scroll spring sample testing device for aircraft engines.

[0006] Preferably, the fixed ring block is fixed to the bottom end of the circular groove, an adjustment slot is provided at the top of the fixed ring block, a sliding slot is provided at the bottom of the adjustment slot, three clamping ball slots are provided at both ends of the sliding slot in a linear structure, and a plurality of installation slots are provided on the surface of the fixed ring block in a circular equidistant structure.

[0007] Preferably, the clamping assembly comprises a clamping arc block and an adjusting rod, the clamping arc block is slidably arranged in the sliding groove, a column-shaped groove is provided in the clamping arc block, column blocks are movably arranged at both ends of the column-shaped groove, the two column blocks are elastically connected by a spring X, and a clamping ball block is fixedly arranged at one end of the two column blocks which are relatively far away, the clamping ball block passes through the column-shaped groove and extends to the outside of the clamping arc block and is clamped and matched with the clamping ball groove, the adjusting rod is movably arranged on the adjusting empty groove, and the bottom end of the adjusting rod is fixedly connected to the clamping arc block; Wherein, the two ends of the clamping arc block are respectively provided with an outer inclined surface A and an inner inclined surface A.

[0008] Preferably, a lifting chute A with a fan-shaped cross section is provided on the outer edge surface of the upper disc, and a plurality of spring grooves A are evenly provided on the top of the lifting chute A; A dust cover A is fixedly arranged on the centripetal groove A, and the dust cover A is in a folded structure; An arc groove A is formed on the top of the lower disc away from the inclined guide groove A.

[0009] Preferably, the inner end mounting assembly includes a limit slider A, which is slidably arranged on the centripetal slide groove A, a connecting rod A is fixedly provided at the bottom end of the limit slider A, a movable ring A is rotatably connected to the connecting rod A, the movable ring A is movably connected to the inclined guide groove A, a connecting shaft A is fixedly provided at the top end of the limit slider A, the top end of the connecting shaft A passes through the dust cover cloth A, extends to the outside of the centripetal groove A and is fixedly provided with an inner end block, and an inner end slot is provided at the top end of the inner end block.

[0010] Preferably, the connecting component A includes a fan-shaped slider A, which is slidably arranged on the lifting slide groove A, and the fan-shaped slider A is movably matched with the arc groove A. The fan-shaped slider A is elastically connected to the spring groove A through a spiral spring A, and an outer inclined surface B is provided at the bottom end of the outer edge surface of the fan-shaped slider A, and the outer inclined surface B is movably matched with the inner inclined surface A. A triangular groove A is provided inside the fan-shaped slider A, and a vertical groove A is provided on the triangular groove A. A limiting ball block A is movably provided in the triangular groove A, and a friction block A is fixed on the surface of the limiting ball block A. The friction block A is a hollow ball structure, and the friction block A passes through the vertical groove A and frictionally matches with the inner edge surface of the arc groove A, and a clamping groove A is provided at the bottom end of the fan-shaped slider A.

[0011] Preferably, a lifting chute B with a fan-shaped cross section is provided on the inner edge surface of the upper circular ring, and a plurality of spring grooves B are evenly provided on the top of the lifting chute B; A dust cover cloth B is fixedly arranged on the centripetal groove B, and the dust cover cloth B is in a folded structure; An arc groove B is formed on the top of the lower ring away from the inclined guide groove B.

[0012] Preferably, the outer end mounting assembly comprises a limit slider B, the limit slider B is slidably arranged on the centripetal slide groove B, a connecting rod B is fixedly arranged at the bottom end of the limit slider B, a movable ring B is rotatably connected to the connecting rod B, the movable ring B is movably connected to the inclined guide groove B, a connecting shaft B is fixedly arranged at the top end of the limit slider B, the top end of the connecting shaft B passes through the dust cover cloth B and extends to the outside of the centripetal groove B and is fixedly arranged with an outer end block, and an outer end slot is provided at the top end of the outer end block; The outer end block is provided with a threaded groove, the threaded groove is threadedly connected with a bolt, the bolt penetrates into the outer end slot and is fixed with a rotating block, the rotating block is rotatably connected with a mounting plate, the mounting plate is slidably connected to the outer end slot, and a friction plate is fixed on the mounting plate.

[0013] Preferably, the connecting component B includes a fan-shaped slider B, which is slidably arranged on the lifting slide groove B, and the fan-shaped slider B is movably matched with the arc groove B. The fan-shaped slider B is elastically connected to the spring groove B through a spiral spring B. The bottom end of the inner edge surface of the fan-shaped slider A is provided with an inner inclined surface B, and the inner inclined surface B is movably matched with the outer inclined surface A. A triangular groove B is provided in the fan-shaped slider B, and a vertical groove B is provided on the triangular groove B. A limiting ball block B is movably provided in the triangular groove B, and a friction block B is fixed on the surface of the limiting ball block B. The friction block B is a hollow ball structure, and the friction block B passes through the vertical groove B and frictionally matches with the outer edge surface of the arc groove A. A clamping groove B is provided at the bottom end of the fan-shaped slider B, and the two ends of the clamping arc block are respectively clamped and matched with the clamping groove A and the clamping groove B.

[0014] Preferably, the rotating part includes a motor, a center gear, a plurality of planetary gears and an inner gear ring, the motor is fixed on the mounting cavity, the center gear is fixed at the bottom of the lower disc, the first rotating end is composed of the center gear, a rotating shaft A is fixed at the bottom of the center gear, the bottom of the rotating shaft A passes through the circular groove and extends into the mounting cavity and is fixedly connected to the motor output shaft, a plurality of planetary gears are respectively arranged in a plurality of mounting grooves, the planetary gears are rotatably connected to the mounting grooves through a rotating shaft B, the inner gear ring is fixed at the bottom of the lower circular ring, the second rotating end is composed of the inner gear ring, and both ends of the planetary gears are respectively meshed with the inner gear ring and the center gear.

[0015] Preferably, compared with the prior art, The beneficial effects of the present invention are: 1. The present invention adopts the structural design of the testing mechanism. When fatigue testing is performed on a scroll spring sample, the positions of the inner end mounting assembly and the outer end mounting assembly can be adjusted by the driving unit according to the shape and size of the sample, so that the sample is suitable for test installation and does not need to be replaced. The method is easy to use, saves installation time for sample fatigue testing, and improves the efficiency of sample testing. The present invention can be applied to all sample tests within the adjustment range of the inner end mounting assembly and the outer end mounting assembly, thereby improving the detection range of the sample test and the functionality of the sample testing device, thus solving the technical problem of low functionality of the scroll spring sample testing device for aircraft engines.

[0016] 2. The present invention also further designs the adjustment part, the inner end and the outer end structure, so that the adjustment can be made in the test state and the adjustment state by moving the adjustment rod, which is convenient for adjustment and further solves the technical problem of low functionality of the spiral spring sample testing device for aircraft engines.

[0017] 3. The present invention also makes the structure more compact by setting the spring A and the spring B to be vortex-shaped, reduces the thickness of the upper disk and the upper ring, reduces the rotation load of the rotating part, and is more energy-efficient.

[0018] 4. The present invention arranges the structure of the rotating part so that the central gear drives the inner end to rotate, and the planetary gear rotates by itself, causing the inner gear ring to drive the outer end to rotate in the opposite direction relative to the inner end, simulating the use condition of the spiral spring, increasing the rotation speed of the outer end relative to the inner end, and making the fatigue test efficiency of the spiral spring higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention in use state; Figure 2 It is a schematic diagram of the split structure of the testing mechanism of the present invention; Figure 3 It is a schematic diagram of the disassembled structure of the adjusting part, the inner end part, the outer end part and the rotating part of the present invention; Figure 4 It is a schematic diagram of the disassembled structure of the adjustment part, the planetary gear and the rotating shaft B of the present invention; Figure 5 It is a schematic diagram of the disassembled structure of the clamping assembly of the present invention; Figure 6 It is a schematic diagram of the disassembled structure of the inner end portion, the central gear and the rotating shaft A of the present invention; Figure 7 It is a schematic diagram of the partial structural disassembly of the inner end portion of the present invention; Figure 8 It is a schematic diagram of the structure of the upper disc of the present invention; Fig. 9 This is a schematic diagram of the split structure of the connection component A of the present invention; Fig.10 It is a schematic diagram of the split structure of the outer end portion and the inner gear ring of the present invention; Fig.11 It is a structural schematic diagram of the lower ring of the present invention; Fig.12 It is a schematic diagram of the split structure of the outer end mounting assembly of the present invention; Fig.13 It is a schematic diagram of the split structure of the connection component B of the present invention; Fig.14 It is a structural schematic diagram of the rotating part of the present invention; Fig.15 Schematic diagram of two shapes of spiral springs of the present invention.

[0020] Description of the numbers in the figure: 1. Test machine body; 2. Test mechanism; 3. Mounting block; 4. Adjustment part; 5. Inner end; 6. Outer end; 7. Rotating part; 31. round groove; 32. mounting cavity; 41. Fixed ring block; 42. Snap-on assembly; 411, adjustment slot; 412, sliding slot; 413, ball receiving slot; 414, installation slot; 421, arc block; 422, column groove; 423, column block; 424, spring X; 425, ball block; 426, adjustment rod; 427, outer bevel A; 428, inner bevel A; 51. upper disc; 52. lower disc; 53. centripetal slide groove A; 54. centripetal groove A; 55. inner end mounting assembly; 56. oblique guide groove A; 57. connecting assembly A; 511, lifting slide A; 512, spring slot A; 521, arc groove A; 541. Dust cover A; 551, limit slider A; 552, connecting rod A; 553, movable ring A; 554, connecting shaft A; 555, inner end block; 556, inner end slot; 570, triangular groove A; 571, fan-shaped slider A; 572, spring A; 573, outer inclined surface B; 574, vertical groove A; 575, limiting ball block A; 576, friction block A; 577, clamping groove A; 61. Upper ring; 62. Lower ring; 63. Centripetal slide groove B; 64. Centripetal groove B; 65. Outer end mounting assembly; 66. Oblique guide groove B; 67. Connecting assembly B; 611, lifting slide B; 612, spring slot B; 621, arc groove B; 641, dust cover B; 651, limit slider B; 652, connecting rod B; 653, movable ring B; 654, connecting shaft B; 655, outer end block; 656, outer end slot; 657, threaded groove; 658, bolt; 659, rotating block; 6510, mounting plate; 6511, friction plate; 670, triangular groove B; 671, fan-shaped slider B; 672, spring B; 673, inner inclined surface B; 674, vertical groove B; 675, limiting ball block B; 676, friction block B; 677, clamping groove B; 70. Planetary gear; 71. Motor; 72. Central gear; 73. Rotation axis A; 74. Rotation axis B; 75. Internal gear ring. DETAILED DESCRIPTION

[0021] like Figures 1 to 15As shown, the present invention relates to a volute spring quality test device for an aircraft engine, comprising a test machine body 1, a test mechanism 2 is arranged on the test platform of the test machine body 1, and the test mechanism 2 comprises a mounting block 3, an adjusting portion 4, an inner end portion 5, an outer end portion 6 and a rotating portion 7; the mounting block 3 is fixedly mounted on the test machine body 1, a circular groove 31 is provided at the top of the mounting block 3, and a mounting cavity 32 is provided in the mounting block 3; the adjusting portion 4 comprises a fixed ring block 41, the fixed ring block 41 is fixedly mounted at the bottom of the circular groove 31, and a clamping assembly 42 is provided on the fixed ring block 41; the inner end portion 5 comprises an upper disc 51, the upper disc 51 is rotatably arranged at the top of the inner edge surface of the fixed ring block 41, a lower disc 52 is arranged below the upper disc 51, the lower disc 52 is rotatably connected with the fixed ring block 41, a centripetal slide groove A53 is provided on the upper disc 51, a centripetal groove A54 is provided at the top of the centripetal slide groove A53, an inner end mounting component 55 is slidably arranged on the centripetal slide groove A53, an oblique guide groove A56 is provided on the lower disc 52, the bottom end of the inner end mounting component 55 is movably connected with the oblique guide groove A56, a connecting component A57 is provided on the upper disc 51, and the bottom end of the connecting component A57 is plugged with the top end of the lower disc 52; The outer end portion 6 includes an upper circular ring 61, which is rotatably arranged at the top of the outer edge surface of the fixed ring block 41. A lower circular ring 62 is arranged below the upper circular ring 61, and the lower circular ring 62 is rotatably connected to the fixed ring block 41. A centripetal slide groove B63 is provided on the upper circular ring 61, and a centripetal groove B64 is provided at the top of the centripetal slide groove B63. An outer end mounting component 65 is slidably arranged on the centripetal slide groove B63. An oblique guide groove B66 is provided on the lower circular ring 62, and the bottom end of the outer end mounting component 65 is movably connected to the oblique guide groove B66. A connecting component B67 is provided on the upper circular ring 61, and the bottom end of the connecting component B67 is plug-fitted with the top end of the lower circular ring 62; the two ends of the clamping component 42 are clamped and matched with the connecting component A57 and the connecting component B67 respectively; the rotating part 7 is arranged in the mounting block 3, and the rotating part 7 has a first rotating end and a second rotating end, the first rotating end is fixedly connected to the lower disc 52, and the second rotating end is fixedly connected to the lower circular ring 62.

[0022] In an embodiment of the present invention, a fixed ring block 41 is fixed at the bottom end of the circular groove 31, an adjustment slot 411 is provided at the top end of the fixed ring block 41, a sliding slot 412 is provided at the bottom end of the adjustment slot 411, three snap-in ball slots 413 are provided at both ends of the sliding slot 412 in a linear structure, and a plurality of installation slots 414 are provided in a circular equidistant structure on the surface of the fixed ring block 41.

[0023] In an embodiment of the present invention, the clamping assembly 42 includes a clamping arc block 421 and an adjusting rod 426. The clamping arc block 421 is slidably arranged in the sliding groove 412. A columnar groove 422 is provided in the clamping arc block 421. Column blocks 423 are movably provided at both ends of the columnar groove 422. The two column blocks 423 are elastically connected by a spring X424. A clamping ball block 425 is fixed at one end of the two column blocks 423 that are relatively far away. The clamping ball block 425 passes through the columnar groove 422 and extends to the outside of the clamping arc block 421 and is clamped with the clamping ball groove 413. The adjusting rod 426 is movably arranged on the adjusting slot 411, and the bottom end of the adjusting rod 426 is fixedly connected to the clamping arc block 421; an outer inclined surface A427 and an inner inclined surface A428 are respectively provided at both ends of the clamping arc block 421.

[0024] In the embodiment of the present invention, a lifting chute A511 with a fan-shaped cross section is provided on the outer edge surface of the upper disc 51, and a plurality of spring grooves A512 are evenly provided on the top of the lifting chute A511; a dust cover A541 is fixed on the centripetal groove A54, and the dust cover A541 is a folding structure; The top of the lower disc 52 is provided with an arc groove A521 on one side away from the oblique guide groove A56. The present invention provides a dust shielding cloth A541 to shield dust, thereby preventing dust from entering the circular groove 31 and affecting the transmission of the testing mechanism 2.

[0025] In an embodiment of the present invention, the inner end mounting assembly 55 comprises a limit slider A551, which is slidably arranged on the centripetal slide groove A53, a connecting rod A552 is fixedly arranged at the bottom end of the limit slider A551, a movable ring A553 is rotatably connected to the connecting rod A552, the movable ring A553 is movably connected to the oblique guide groove A56, a connecting shaft A554 is fixedly arranged at the top end of the limit slider A551, the top end of the connecting shaft A554 passes through the dust cover A541 and extends to the outside of the centripetal groove A54 and is fixedly arranged with an inner end block 555, and an inner end slot 556 is provided at the top end of the inner end block 555. Through the above arrangement, the present invention enables the gap position between the centripetal slide groove A53 and the oblique guide groove A56 to change when the lower disc 52 rotates relative to the upper disc 51, so that the movable ring A553 moves in the oblique guide groove A56, and the limit slider A551 moves on the centripetal slide groove A53, thereby causing the position of the inner end block 555 to change accordingly.

[0026] In the embodiment of the present invention, the connecting component A57 includes a fan-shaped slider A571, which is slidably arranged on the lifting slide groove A511, and the fan-shaped slider A571 is movably matched with the arc groove A521. The fan-shaped slider A571 is elastically connected to the spring groove A512 through a spiral spring A572. The bottom end of the outer edge surface of the fan-shaped slider A571 is provided with an outer bevel B573, and the outer bevel B573 is movably matched with the inner bevel A428. A triangular groove A570 is provided in the fan-shaped slider A571, and a vertical groove A574 is provided on the triangular groove A570. A limiting ball block A575 is movably provided in the triangular groove A570, and a friction block A576 is fixedly provided on the surface of the limiting ball block A575. The friction block A576 has a hollow ball structure. The friction block A576 passes through the vertical groove A574 and frictionally cooperates with the inner edge surface of the arc groove A521. A snap-in groove A577 is provided at the bottom end of the fan-shaped slider A571.The present invention adopts the above arrangement, so that the movable adjustment rod 426 makes the clamping arc block 421 slide in the sliding groove 412, the clamping ball block 425 is separated from the clamping ball groove 413 located in the middle, the spring X424 is compressed, so that the inner inclined surface A428 contacts the outer inclined surface B573, and the force of the inner inclined surface A428 on the outer inclined surface B573 makes the fan-shaped slider A571 rise along the lifting groove A511, and the friction block A576 drives the limiting ball block A575 to rotate and descend relative to the triangular groove A570 under the friction force of the arc groove A521, and the spring A574 is compressed. 72 is compressed until the receiving ball block 425 moves along the surface of the sliding groove 412 to the receiving ball groove 413 close to the outer inclined surface B573. Under the elastic force of the spring X424, the receiving ball block 425 is engaged with the receiving ball groove 413 close to the outer inclined surface B573. At this time, the fan-shaped slider A571 is separated from the arc groove A521, and the receiving arc block 421 is engaged with the receiving groove A577, so that the upper disk 51 cannot rotate relative to the fixed ring block 41. The adjusting rod 426 is moved to re-engage the receiving ball block 425 with the receiving ball groove 413 located in the middle. Under the elastic force of spring A572, the fan-shaped slider A571 descends along the lifting slide groove A511, and the fan-shaped slider A571 is reinserted into the arc groove A521. During this process, the friction block A576 drives the limiting ball block A575 to rotate and rise relative to the triangular groove A570 under the friction force of the arc groove A521. At this time, under the friction force of the arc groove A521, if the arc groove A521 and the fan-shaped slider A571 rotate relatively, the limiting ball block A575 rotates and displaces toward the narrow side of the triangular groove A570. The two ends of 570 are evenly and gradually reduced in structure. Therefore, the arc groove A521 locks the triangular groove A570 through the limiting ball block A575, so that the arc groove A521 and the fan-shaped slider A571 cannot rotate relative to each other, and a spiral spring A572 is provided to reduce the height of the spring A572 at the compression limit, so that a stronger and more elastic spring A572 can be used, so that the fan-shaped slider A571 is reinserted into the arc groove A521 more stably, and the thickness of the upper disk 51 is reduced, thereby reducing the rotation load of the rotating part 7 and saving more energy.

[0027] In the embodiment of the present invention, a lifting groove B611 with a fan-shaped cross-section is provided on the inner edge surface of the upper ring 61, and a plurality of spring grooves B612 are evenly provided on the top of the lifting groove B611; a dust shielding cloth B641 is fixedly provided on the centripetal groove B64, and the dust shielding cloth B641 is a folded structure; an arc groove B621 is provided on the top of the lower ring 62 away from the inclined guide groove B66.

[0028] In an embodiment of the present invention, the outer end mounting assembly 65 includes a limit slider B651, which is slidably arranged on the centripetal slide groove B63. A connecting rod B652 is fixedly arranged at the bottom end of the limit slider B651, and a movable ring B653 is rotatably connected to the connecting rod B652. The movable ring B653 is movably connected to the inclined guide groove B66. A connecting shaft B654 is fixedly arranged at the top end of the limit slider B651. The top end of the connecting shaft B654 passes through the dust shield cloth B641 and extends to the outside of the centripetal groove B64 and is fixedly provided with an outer end block 655. An outer end slot 656 is provided at the top end of the outer end block 655. Through the above-mentioned arrangement, the present invention is the same as the principle of the inner end 5. When the upper ring 61 and the lower ring 62 rotate relative to each other, the position of the outer end block 655 can be adjusted.

[0029] The outer end block 655 is provided with a threaded groove 657, a bolt 658 is threadedly connected to the threaded groove 657, the bolt 658 penetrates into the outer end slot 656 and is fixed with a rotating block 659, a mounting plate 6510 is rotatably connected to the rotating block 659, the mounting plate 6510 is slidably connected to the outer end slot 656, and a friction plate 6511 is fixed to the mounting plate 6510. Through the above arrangement, the present invention enables the bolt 658 to rotate relative to the threaded groove 657 when the bolt 658 is rotated, the rotating block 659 rotates relative to the mounting plate 6510, and drives the mounting plate 6510 to slide along the outer end slot 656 and the friction plate 6511.

[0030] In an embodiment of the present invention, the connecting component B67 includes a fan-shaped slider B671, which is slidably arranged on the lifting slide groove B611, and the fan-shaped slider B671 is movably matched with the arc groove B621. The fan-shaped slider B671 is elastically connected to the spring groove B612 through a spiral spring B672. The bottom end of the inner edge surface of the fan-shaped slider A571 is provided with an inner bevel B673, and the inner bevel B673 is movably matched with the outer bevel A427. A triangular groove is provided in the fan-shaped slider B671. B670, a vertical groove B674 is provided on the triangular groove B670, a limiting ball block B675 is movably provided in the triangular groove B670, a friction block B676 is fixed on the surface of the limiting ball block B675, the friction block B676 is a hollow ball structure, the friction block B676 passes through the vertical groove B674 and frictionally cooperates with the outer edge surface of the arc groove A521, a clamping groove B677 is provided at the bottom end of the fan-shaped slider B671, and the two ends of the clamping arc block 421 are respectively clamped and cooperated with the clamping groove A577 and the clamping groove B677. The connection component B67 of the present invention has the same principle as the connection component A57.

[0031] In an embodiment of the present invention, the rotating part 7 includes a motor 71, a center gear 72, a plurality of planetary gears 70 and an inner gear ring 75. The motor 71 is fixed on the mounting cavity 32, the center gear 72 is fixed at the bottom end of the lower disc 52, the first rotating end is composed of the center gear 72, the bottom end of the center gear 72 is fixed with a rotating shaft A73, the bottom end of the rotating shaft A73 passes through the circular groove 31 and extends into the mounting cavity 32 and is fixedly connected to the output shaft of the motor 71, a plurality of planetary gears 70 are respectively arranged in a plurality of mounting grooves 414, the planetary gears 70 and the mounting grooves 414 are rotatably connected through the rotating shaft B74, the inner gear ring 75 is fixed at the bottom end of the lower circular ring 62, the second rotating end is composed of the inner gear ring 75, and the two ends of the planetary gears 70 are respectively meshed with the inner gear ring 75 and the center gear 72. Through the structural setting of the rotating part 7, the central gear 72 drives the inner end 5 to rotate, and the planetary gear 70 rotates by itself, causing the inner gear ring 75 to drive the outer end 6 to rotate in the opposite direction relative to the inner end 5, simulating the use condition of the spiral spring, and increasing the rotation speed of the outer end 6 relative to the inner end 5, making the fatigue test efficiency of the spiral spring higher.

[0032] A method for using a volute spring quality testing device for an aircraft engine comprises the following steps: S1: Adjust the positions of the inner end mounting assembly 55 and the outer end mounting assembly 65 according to the type and size of the scroll spring; S1, 1: adjusting the position of the inner end mounting assembly 55; The adjusting rod 426 is moved to make the arc block 421 slide in the sliding groove 412, and the ball block 425 is separated from the ball groove 413 in the middle. The spring X424 is compressed to make the inner inclined surface A428 contact the outer inclined surface B573. The force of the inner inclined surface A428 on the outer inclined surface B573 makes the fan-shaped slider A571 rise along the lifting groove A511. The friction block A576 drives the limiting ball block A575 relative to the triangular groove A511 under the friction force of the arc groove A521. 70 rotates downward, and the spring A572 is compressed until the clamping ball block 425 moves along the surface of the sliding groove 412 to the clamping ball groove 413 close to the outer inclined surface B573. Under the elastic force of the spring X424, the clamping ball block 425 is clamped with the clamping ball groove 413 close to the outer inclined surface B573. At this time, the fan-shaped slider A571 is separated from the arc groove A521, and the clamping arc block 421 is clamped with the clamping groove A577, so that the upper disc 51 cannot rotate relative to the fixed ring block 41; The output shaft of the motor 71 is controlled to rotate by an external control mechanism, so that the central gear 72 drives the lower disc 52 to rotate relative to the upper disc 51, causing the gap position between the centripetal slide groove A53 and the oblique guide groove A56 to change, so that the movable ring A553 moves in the oblique guide groove A56, and the limit slider A551 moves on the centripetal slide groove A53 until the inner end block 555 is in a proper position; The adjusting rod 426 is moved so that the clamping ball block 425 is re-engaged with the clamping ball groove 413 located in the middle. Under the elastic force of the spring A572, the fan-shaped slider A571 is lowered along the lifting slide groove A511, and the fan-shaped slider A571 is reinserted into the arc groove A521. In this process, the friction block A576 drives the limiting ball block A575 to rotate and rise relative to the triangular groove A570 under the friction force of the arc groove A521. S1, 2: Referring to step S1, 1, adjust the outer end block 655 to an appropriate position; and control the motor 71 to rotate through an external control mechanism, so that the central gear 72 drives the inner end 5 to rotate, and the inner gear ring 75 drives the outer end 6 to rotate, so that the relative position of the outer end block 655 and the inner end block 555 is adapted to the inner and outer end positions of the volute spring; S2: Installation of spiral spring: Install the inner and outer ends of the scroll spring into the inner end slot 556 and the outer end slot 656 respectively, and rotate the bolt 658 to make the mounting plate 6510 slide relative to the outer end slot 656, so that the friction plate 6511 presses the outer end of the scroll spring tightly; S3: Fatigue test of scroll spring: The output shaft of the motor 71 is controlled to rotate by an external control mechanism, so that the central gear 72 drives the inner end portion 5 to rotate, and the inner gear ring 75 drives the outer end portion 6 to rotate in the opposite direction relative to the inner end portion 5, simulating the use condition of the volute spring and performing fatigue test on the volute spring; S4: Repeat steps S2 and S3 to perform fatigue tests on multiple scroll spring samples of the same type.

[0033] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A volute spring quality testing device for an aircraft engine, comprising a testing machine body (1), a testing mechanism (2) being arranged on a testing platform of the testing machine body (1), characterized in that: The testing mechanism (2) comprises a mounting block (3), an adjusting portion (4), an inner end portion (5), an outer end portion (6) and a rotating portion (7); The mounting block (3) is fixedly mounted on the testing machine body (1); a circular groove (31) is formed at the top of the mounting block (3); and a mounting cavity (32) is formed inside the mounting block (3); The adjusting portion (4) comprises a fixed ring block (41), the fixed ring block (41) is fixedly arranged at the bottom end of the circular groove (31), and a clamping assembly (42) is provided on the fixed ring block (41); The inner end portion (5) comprises an upper disc (51), the upper disc (51) being rotatably arranged at the top end of the inner edge surface of the fixed ring block (41), a lower disc (52) being arranged below the upper disc (51), the lower disc (52) being rotatably connected to the fixed ring block (41), a centripetal slide groove A (53) being provided on the upper disc (51), a centripetal groove A (54) being provided at the top end of the centripetal slide groove A (53), an inner end mounting component (55) being slidably arranged on the centripetal slide groove A (53), an inclined guide groove A (56) being provided on the lower disc (52), the bottom end of the inner end mounting component (55) being movably connected to the inclined guide groove A (56), a connecting component A (57) being provided on the upper disc (51), the bottom end of the connecting component A (57) being plugged into the top end of the lower disc (52); The outer end portion (6) comprises an upper circular ring (61), the upper circular ring (61) is rotatably arranged at the top of the outer edge surface of the fixed ring block (41), a lower circular ring (62) is arranged below the upper circular ring (61), the lower circular ring (62) is rotatably connected to the fixed ring block (41), a centripetal slide groove B (63) is provided on the upper circular ring (61), a centripetal groove B (64) is provided at the top of the centripetal slide groove B (63), an outer end mounting component (65) is slidably arranged on the centripetal slide groove B (63), an oblique guide groove B (66) is provided on the lower circular ring (62), the bottom end of the outer end mounting component (65) is movably connected to the oblique guide groove B (66), a connecting component B (67) is arranged on the upper circular ring (61), the bottom end of the connecting component B (67) is plug-fitted with the top end of the lower circular ring (62); Wherein, two ends of the snap-fit ​​assembly (42) are snap-fitted with the connection assembly A (57) and the connection assembly B (67) respectively; The rotating part (7) is arranged in the mounting block (3), and the rotating part (7) has a first rotating end and a second rotating end, the first rotating end is fixedly connected to the lower disc (52), and the second rotating end is fixedly connected to the lower ring (62).

2. The aircraft engine spiral spring quality testing device according to claim 1, characterized in that: The fixed ring block (41) is fixedly arranged at the bottom end of the circular groove (31); an adjustment slot (411) is provided at the top end of the fixed ring block (41); a sliding slot (412) is provided at the bottom end of the adjustment slot (411); three clamping ball slots (413) are provided at both ends of the sliding slot (412) in a linear structure; and a plurality of installation slots (414) are provided on the surface of the fixed ring block (41) in an annular structure with equal spacing.

3. The quality testing device for a spiral spring for an aircraft engine according to claim 2, characterized in that: The clamping assembly (42) comprises a clamping arc block (421) and an adjusting rod (426); the clamping arc block (421) is slidably arranged in the sliding groove (412); a columnar groove (422) is provided in the clamping arc block (421); column blocks (423) are movably arranged at both ends of the columnar groove (422); the two column blocks (423) are elastically connected by a spring X (424); a clamping ball block (425) is fixedly arranged at one end of the two column blocks (423) which is relatively far away; the clamping ball block (425) passes through the columnar groove (422) and extends to the outside of the clamping arc block (421) and is clamped and matched with the clamping ball groove (413); the adjusting rod (426) is movably arranged on the adjusting slot (411); the bottom end of the adjusting rod (426) is fixedly connected to the clamping arc block (421); Wherein, the two ends of the clamping arc block (421) are respectively provided with an outer inclined surface A (427) and an inner inclined surface A (428).

4. The aircraft engine spiral spring quality testing device according to claim 3, characterized in that: A lifting slide groove A (511) with a fan-shaped cross section is formed on the outer edge surface of the upper disc (51), and a plurality of spring grooves A (512) are evenly formed on the top of the lifting slide groove A (511); A dust cover cloth A (541) is fixedly provided on the centripetal groove A (54), and the dust cover cloth A (541) is in a folded structure; An arc-shaped groove A (521) is formed on a side of the top end of the lower disc (52) away from the inclined guide groove A (56).

5. The aircraft engine spiral spring quality testing device according to claim 4, characterized in that: The inner end mounting assembly (55) comprises a limit slider A (551), the limit slider A (551) being slidably mounted on the centripetal groove A (53), a connecting rod A (552) being fixedly mounted at the bottom end of the limit slider A (551), a movable ring A (553) being rotatably connected to the connecting rod A (552), the movable ring A (553) being movably connected to the inclined guide groove A (56), a connecting shaft A (554) being fixedly mounted at the top end of the limit slider A (551), the connecting shaft A (554) having a top end passing through the dust cover cloth A (541) and extending to the outside of the centripetal groove A (54) and being fixedly mounted with an inner end block (555), the inner end block (555) having a top end provided with an inner end slot (556).

6. The aircraft engine spiral spring quality testing device according to claim 5, characterized in that: The connecting assembly A (57) includes a fan-shaped slider A (571), the fan-shaped slider A (571) is slidably arranged on the lifting slide groove A (511), the fan-shaped slider A (571) is movably matched with the arc groove A (521), the fan-shaped slider A (571) is elastically connected to the spring groove A (512) via a spiral spring A (572), an outer bevel B (573) is provided at the bottom end of the outer edge surface of the fan-shaped slider A (571), the outer bevel B (573) is movably matched with the inner bevel A (428), the fan-shaped slider A (571) is elastically connected to the spring groove A (512) via a spiral spring A (572), an outer bevel B (573) is provided at the bottom end of the outer edge surface of the fan-shaped slider A (571), the outer bevel B (573) is movably matched with the inner bevel A (428), and the fan-shaped slider A (571) is elastically connected to the spring groove A (512) via a spiral spring A (572). A triangular groove A (570) is provided in the slider A (571), a vertical groove A (574) is provided on the triangular groove A (570), a limiting ball block A (575) is movably provided in the triangular groove A (570), a friction block A (576) is fixedly provided on the surface of the limiting ball block A (575), the friction block A (576) is in a hollow ball structure, the friction block A (576) passes through the vertical groove A (574) and is frictionally engaged with the inner edge surface of the arc groove A (521), and a clamping groove A (577) is provided at the bottom end of the fan-shaped slider A (571).

7. The aircraft engine spiral spring quality testing device according to claim 6, characterized in that: The inner edge surface of the upper circular ring (61) is provided with a lifting and lowering groove B (611) with a fan-shaped cross section, and a plurality of spring grooves B (612) are evenly provided at the top of the lifting and lowering groove B (611); A dust shielding cloth B (641) is fixedly provided on the centripetal groove B (64), and the dust shielding cloth B (641) is in a folded structure; An arc-shaped groove B (621) is formed on the top end of the lower circular ring (62) away from the inclined guide groove B (66).

8. The aircraft engine spiral spring quality testing device according to claim 7, characterized in that: The outer end mounting assembly (65) comprises a limit slider B (651), the limit slider B (651) is slidably arranged on the centripetal groove B (63), a connecting rod B (652) is fixedly arranged at the bottom end of the limit slider B (651), a movable ring B (653) is rotatably connected to the connecting rod B (652), the movable ring B (653) is movably connected to the inclined guide groove B (66), a connecting shaft B (654) is fixedly arranged at the top end of the limit slider B (651), the top end of the connecting shaft B (654) passes through the dust cover cloth B (641) and extends to the outside of the centripetal groove B (64) and is fixedly arranged with an outer end block (655), and an outer end slot (656) is provided at the top end of the outer end block (655); The outer end block (655) is provided with a threaded groove (657), a bolt (658) is threadedly connected to the threaded groove (657), the bolt (658) penetrates into the outer end clamping groove (656) and is fixedly provided with a rotating block (659), a mounting plate (6510) is rotatably connected to the rotating block (659), the mounting plate (6510) is slidably connected to the outer end clamping groove (656), and a friction plate (6511) is fixedly provided on the mounting plate (6510).

9. The aircraft engine spiral spring quality testing device according to claim 8, characterized in that: The connecting assembly B (67) includes a fan-shaped slider B (671), the fan-shaped slider B (671) is slidably arranged on the lifting slide groove B (611), the fan-shaped slider B (671) is movably matched with the arc groove B (621), the fan-shaped slider B (671) is elastically connected to the spring groove B (612) via a spiral spring B (672), an inner bevel B (673) is provided at the bottom end of the inner edge surface of the fan-shaped slider A (571), the inner bevel B (673) is movably matched with the outer bevel A (427), and a triangular groove B (670) is provided in the fan-shaped slider B (671). The triangular groove B (670) is provided with a vertical groove B (674), a limiting ball block B (675) is movably provided in the triangular groove B (670), a friction block B (676) is fixedly provided on the surface of the limiting ball block B (675), the friction block B (676) is in a hollow ball structure, the friction block B (676) passes through the vertical groove B (674) and frictionally cooperates with the outer edge surface of the arc groove A (521), a clamping groove B (677) is provided at the bottom end of the fan-shaped sliding block B (671), and two ends of the clamping arc block (421) are respectively clamped and cooperated with the clamping groove A (577) and the clamping groove B (677).

10. The aircraft engine spiral spring quality testing device according to claim 9, characterized in that: The rotating part (7) comprises a motor (71), a central gear (72), a plurality of planetary gears (70) and an inner gear ring (75); the motor (71) is fixedly mounted on the mounting cavity (32); the central gear (72) is fixedly mounted on the bottom end of the lower disk (52); the first rotating end is formed by the central gear (72); a rotating shaft A (73) is fixedly mounted on the bottom end of the central gear (72); the bottom end of the rotating shaft A (73) passes through the circular groove (31) and extends to the mounting cavity (32). ) and is fixedly connected to the output shaft of the motor (71), a plurality of the planetary gears (70) are respectively arranged in a plurality of the mounting grooves (414), the planetary gears (70) and the mounting grooves (414) are rotationally connected via a rotating shaft B (74), the inner gear ring (75) is fixedly arranged at the bottom end of the lower circular ring (62), the second rotating end is constituted by the inner gear ring (75), and the two ends of the planetary gear (70) are respectively meshed and connected with the inner gear ring (75) and the central gear (72).

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