Static torsion test device and method for gear shaft

Abstract

The invention discloses a gear shaft static torsion test device and method, and belongs to the technical field of torque test equipment, and the gear shaft static torsion test device comprises a mounting part and a loading part; a mounting space is arranged on the mounting part and is used for mounting an accessory transmission casing; a loading disc is arranged on the loading part and is in transmission connection with a gear shaft of the accessory transmission casing; the loading part is also provided with a first pull rope and a second pull rope; one end of the first pull rope is wound on the loading disc in the circumferential direction of the loading disc, and the other end of the first pull rope extends towards one side of the loading disc in the horizontal direction; one end of the second pull rope is wound on the loading disc in the circumferential direction of the loading disc, and the other end of the first pull rope extends towards the other side of the loading disc in the horizontal direction. The gear shaft of the accessory transmission casing can be prevented from generating additional shearing force, the accuracy and reliability of the examination result of the static torsion test are ensured, and the torque loading range during the examination of the static torsion test is expanded.

Description

A gear shaft static torsion test apparatus and method Technical Field

[0001] This application belongs to the technical field of torque testing equipment, and specifically relates to a gear shaft static torsion testing device and method. Background Technology

[0002] The accessory transmission system is one of the key components of an aero-engine. In order to ensure stable performance during actual operation, static torsion tests are required on the accessory transmission system to assess the static strength of the casing and gear shaft in advance.

[0003] Existing accessory transmission systems generally use specialized static torsion testing devices to assess the static strength of the gearbox and gear shaft. For example, patent document CN220251618U discloses a simple static torque testing fixture for gearboxes, including: a base and a loading rod; a first test piece support and a second test piece support are bolted to the base; an anti-torsion support is bolted to the base; an anti-torsion spline shaft is bolted to the anti-torsion support; the anti-torsion spline shaft is connected to the test piece via a spline; the test piece is connected to an adapter spline shaft via a spline; a steel wire rope is bolted to the loading rod; the steel wire rope is connected to a loading tray via a shackle; and weights are placed on the balance tray and the loading tray.

[0004] However, when testing the static strength of the casing and gear shaft using the aforementioned static torsion test apparatus, the weight of the weights will generate additional shear force on the gear shaft of the accessory drive system. Furthermore, the greater the weight of the weights, the greater the additional shear force generated on the gear shaft, which can easily affect the accuracy of the test results and limit the torque loading range during the test. At the same time, using anti-torsion supports and anti-torsion spline shafts for torsion protection is insufficient to meet the torsion protection requirements of the aero-engine accessory drive system. Summary of the Invention

[0005] To address the aforementioned issues, this application provides a gear shaft static torsion test apparatus and method, which has the beneficial effects of ensuring the accuracy of the static torsion test results, expanding the torque loading range during the static torsion test, and meeting the anti-torsion requirements of the accessory transmission casing of aero-engines.

[0006] One of the gear shaft static torsion testing devices includes: a mounting part having a mounting space for mounting an accessory transmission housing; a loading part having a loading disk connected to the gear shaft of the accessory transmission housing; and a first tension rope and a second tension rope on the loading part; one end of the first tension rope is wound around the loading disk circumferentially, and the other end of the first tension rope extends horizontally toward one side of the loading disk; one end of the second tension rope is wound around the loading disk circumferentially, and the other end of the first tension rope extends horizontally toward the other side of the loading disk.

[0007] Furthermore, it also includes: a torque-stopping part, which is disposed within the installation space; a helical bevel gear is disposed on the torque-stopping part, which is connected to the gear shaft of the accessory transmission housing; a flat bevel gear is also disposed on the torque-stopping part, which meshes with the helical bevel gear, and the flat bevel gear applies a first preset pressure to the helical bevel gear.

[0008] Furthermore, the mounting portion includes: a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate being spaced apart to form the mounting space between the first mounting plate and the second mounting plate; one end of the accessory transmission housing is connected to the first mounting plate; the other end of the accessory transmission housing is connected to the second mounting plate through the anti-torsion portion.

[0009] Furthermore, the loading unit includes: two loading components, which are disposed on both sides of the loading disk; one loading component is connected to the end of the first tension rope away from the loading disk and applies tension to the first tension rope in a direction away from the loading disk; the other loading component is connected to the end of the second tension rope away from the loading disk and applies tension to the second tension rope in a direction away from the loading disk.

[0010] Furthermore, the loading assembly includes: a fixed beam; a fixed sleeve disposed on the fixed beam, and the fixed sleeve having a first pull hole in the horizontal direction; and a pull rod threadedly inserted into the end of the first pull hole away from the loading disk, the pull rod being connected to the end of the first tension rope or the second tension rope away from the loading disk.

[0011] Furthermore, a second pull hole is coaxially provided on the pull rod with the first pull hole; a buckle is provided at the end of the pull rod away from the loading disk, and the buckle is connected to the end of the first tension rope or the second tension rope away from the loading disk.

[0012] Furthermore, the loading assembly also includes: a force sensor, which is disposed on the fixed beam, and the fixed sleeve is connected to the fixed beam through the force sensor; a detection cavity is disposed on the force sensor coaxially with the first pull hole; one end of the first tension rope or the second tension rope away from the loading disk passes through the detection cavity into the first pull hole and is connected to the pull rod.

[0013] Furthermore, multiple loading discs are provided, and each loading disc corresponds one-to-one with a multiple gear shaft of the accessory transmission housing; each loading disc is wound with a first tension rope and a second tension rope; multiple fixing sleeves and multiple fixing beams are provided, and each fixing sleeve and multiple fixing beams corresponds one-to-one with a multiple first tension rope and a multiple second tension rope.

[0014] Furthermore, the anti-torsion part includes: a pressing assembly, the pressing assembly being disposed on the second mounting plate, and the flat bevel gear being sleeved on the pressing assembly; the pressing assembly drives the flat bevel gear to apply a first preset pressure to the helical bevel gear.

[0015] Further, the extrusion assembly includes: a fixed base, which is fixedly disposed on the second mounting plate; a first shaft sleeve, which is fixedly disposed on the second mounting plate; a second shaft sleeve, one end of which is inserted into the first shaft sleeve, and a second flat key is embedded between the inner wall of the first shaft sleeve and the outer wall of the second shaft sleeve; a flat bevel gear is sleeved on the end of the second shaft sleeve away from the first shaft sleeve, and the inner wall of the flat bevel gear is splinedly connected to the outer wall of the second shaft sleeve; a clamping nut is threaded along the axial direction of the second shaft sleeve on the fixed base, and the clamping nut abuts against the end of the second shaft sleeve inserted into the first shaft sleeve.

[0016] A method for static torsion testing of a gear shaft based on the same concept, using the gear shaft static torsion testing device as described above, includes the following steps: driving a first tension rope to apply a first preset tension along the horizontal direction on one side of the loading disc in a direction away from the loading disc; driving a second tension rope to apply a second preset tension along the horizontal direction on the other side of the loading disc in a direction away from the loading disc; adjusting the first preset tension and the second preset tension so that the first preset tension and the second preset tension are the same; and transmitting torque from the loading disc to the gear shaft of the accessory transmission housing.

[0017] Compared with the prior art, this application has the following advantages: The gear shaft static torsion testing device of this application, through the cooperation of the first tension rope and the second tension rope, and under the flexible action of the first tension rope and the second tension rope, can offset the influence of the deformation of the loading plate on the torque loading direction, so that the first tension rope and the second tension rope are always set in a horizontal direction, avoiding the generation of additional shear force on the gear shaft of the accessory transmission housing, thereby ensuring the accuracy of the static torsion test results and expanding the torque loading range during the static torsion test. At the same time, by having the first tension rope and the second tension rope respectively wound around the loading plate, the friction between the first tension rope and the loading plate can be further reduced, ensuring the reliability of the torque loading in the static torsion test. Furthermore, by setting a torsion-resistant part suitable for helical bevel gears, the axial force of the flat bevel gear that mates with the helical bevel gear can be adjusted while achieving the torsion-resistant function, so that the boundary conditions of the static torsion test are close to or consistent with the actual use conditions, thereby meeting the torsion-resistant requirements of the accessory transmission housing of aero-engines.

[0018] The gear shaft static torsion test method of this application has the same beneficial effects as the gear shaft static torsion test device described above, since it adopts the gear shaft static torsion test device described above. Therefore, it will not be described again here.

[0019] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 shows one schematic diagram of a gear shaft static torsion testing device according to an embodiment of the present application; Figure 2 shows another schematic diagram of a gear shaft static torsion testing device according to an embodiment of the present application; Figure 3 is a partial enlarged view of Figure 2; Figure 4 shows a transmission schematic diagram of a loading disk according to an embodiment of the present application; Figure 5 shows a schematic diagram of a loading component according to an embodiment of the present application; Figure 6 is a partial enlarged view of Figure 2; Figure 7 shows a simplified transmission diagram of a gear shaft static torsion testing device according to an embodiment of the present application; Figure 8 shows a flowchart of a gear shaft static torsion testing method according to an embodiment of the present application.

[0022] In the diagram, 100 is the mounting section; 110 is the mounting beam; 120 is the first mounting plate; 130 is the second mounting plate; 200 is the loading section; 210 is the loading disc; 211 is the outer groove; 212 is the inner groove; 220 is the torsion transmission shaft; 221 is the first flat key; 222 is the first nut; 230 is the first tension rope; 240 is the second tension rope; 250 is the loading assembly; 251 is the fixing beam; 252 is the fixing sleeve; 253 is the tie rod; 2 54. Buckle; 255. Force sensor; 256. Stud; 257. Second nut; 300. Anti-torsion part; 310. Intermediate housing; 320. Helical bevel gear; 330. Flat bevel gear; 340. Fixing seat; 341. Compression nut; 350. First shaft sleeve; 360. Second shaft sleeve; 361. First baffle; 362. Second baffle; 370. Second flat key; 400. Accessory transmission housing; 410. Gear shaft. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] Referring to Figure 1, this application embodiment provides a gear shaft static torsion testing device, including: a mounting part 100 and a loading part 200. The mounting part 100 is provided with a mounting space for mounting an accessory transmission housing 400. The loading part 200 is provided with a loading disk 210, which is drively connected to the gear shaft 410 of the accessory transmission housing 400. The loading part 200 is also provided with a first tension rope 230 and a second tension rope 240. One end of the first tension rope 230 is wound around the loading disk 210 circumferentially, and the other end of the first tension rope 230 extends horizontally toward one side of the loading disk 210. One end of the second tension rope 240 is wound around the loading disk 210 circumferentially, and the other end of the first tension rope 230 extends horizontally toward the other side of the loading disk 210.

[0025] Specifically, the accessory transmission housing 400 is installed within the mounting space of the mounting section 100. The loading disc 210 of the loading section 200 is connected to the gear shaft 410 of the accessory transmission housing 400, thereby transmitting torque to the gear shaft 410 of the accessory transmission housing 400. One end of the first tension rope 230 of the loading section 200 is wound around the loading disc 210 circumferentially, and the other end of the first tension rope 230 extends horizontally toward one side of the loading disc 210. One end of the second tension rope 240 of the loading section 200 is also wound around the loading disc 210 circumferentially, and the other end of the second tension rope 240 extends horizontally toward the other side of the loading disc 210. By cooperating with the first tension rope 230 and the second tension rope 240, tension can be applied horizontally on both sides of the loading disk 210, thus forming a couple that applies torque to the loading disk 210. Under the flexible action of the first tension rope 230 and the second tension rope 240, the influence of the deformation of the loading disk 210 on the torque loading direction can be offset, so that the first tension rope 230 and the second tension rope 240 are always set in a horizontal direction, avoiding additional shear force on the gear shaft 410 of the accessory transmission housing 400. This ensures the accuracy of the static torsion test results and expands the torque loading range during the static torsion test. At the same time, by winding the first tension rope 230 and the second tension rope 240 around the loading disk 210, the friction between the first tension rope 230 and the second tension rope 240 and the loading disk 210 can be further reduced, ensuring the reliability of the torque loading in the static torsion test.

[0026] In some specific embodiments of this application, referring to FIG1, it further includes: a torsion-resistant part 300. The torsion-resistant part 300 is disposed within the installation space. A helical bevel gear 320 is disposed on the torsion-resistant part 300, and the helical bevel gear 320 is drively connected to the gear shaft 410 of the accessory transmission housing 400. A flat bevel gear 330 is also disposed on the torsion-resistant part 300, and the flat bevel gear 330 is meshed with the helical bevel gear 320, and the flat bevel gear 330 applies a first preset pressure to the helical bevel gear 320.

[0027] Specifically, a torsion-resistant part 300 is also provided in the installation space. The torsion-resistant part 300 is provided with a helical bevel gear 320 and a flat bevel gear 330. The helical bevel gear 320 is connected to the gear shaft 410 of the accessory transmission housing 400 through a gear train. The flat bevel gear 330 is meshed with the helical bevel gear 320. The flat bevel gear 330 applies a first preset pressure to the helical bevel gear 320. Through the helical bevel gear 320 and the flat bevel gear 330, torsion resistance can be achieved on the gear shaft 410 of the accessory transmission housing 400. At the same time, by adjusting the value of the first preset pressure applied by the flat bevel gear 330 to the helical bevel gear 320, the boundary conditions of the static torsion test can be made similar to or consistent with the actual use conditions, thereby meeting the torsion resistance requirements of the accessory transmission housing 400 of the aero-engine.

[0028] In some specific embodiments of this application, referring to FIG2, the mounting portion 100 includes a first mounting plate 120 and a second mounting plate 130. The first mounting plate 120 and the second mounting plate 130 are spaced apart, forming a mounting space between them. One end of the accessory transmission housing 400 is connected to the first mounting plate 120. The other end of the accessory transmission housing 400 is connected to the second mounting plate 130 via a torsion-resistant portion 300.

[0029] Specifically, four mounting beams 110 are provided, and the four mounting beams 110 are symmetrically arranged. A first mounting plate 120 is fixedly disposed between two of the mounting beams 110, and a second mounting plate 130 is fixedly disposed between the other two mounting beams 110, so that the first mounting plate 120 and the second mounting plate 130 are spaced apart and directly opposite each other, thereby forming an installation space between the first mounting plate 120 and the second mounting plate 130. The front end of the accessory transmission housing 400 is fixedly connected to the first mounting plate 120, the rear end of the accessory transmission housing 400 is fixedly connected to the front end of the intermediate housing 310 of the anti-torsion part 300, and the rear end of the intermediate housing 310 is fixedly connected to the second mounting plate 130, thereby realizing the installation of the anti-torsion part 300 and the accessory transmission housing 400 within the installation space.

[0030] In some specific embodiments of this application, referring to Figures 1, 2, 3, 4, and 5, the loading unit 200 includes a loading component 250. Two loading components 250 are provided, positioned on opposite sides of the loading disk 210. One loading component 250 is connected to the end of a first tension rope 230 away from the loading disk 210 and applies tension to the first tension rope 230 in a direction away from the loading disk 210. The other loading component 250 is connected to the end of a second tension rope 240 away from the loading disk 210 and applies tension to the second tension rope 240 in a direction away from the loading disk 210.

[0031] Specifically, two loading components 250 are provided, and the two loading components 250 are respectively disposed on both sides of the loading disk 210. One loading component 250 is connected to the end of the first tension rope 230 away from the loading disk 210, and can apply tension to the first tension rope 230 in a radial direction perpendicular to the loading disk 210 toward one side of the loading disk 210 through this loading component 250. The other loading component 250 is connected to the end of the second tension rope 240 away from the loading disk 210, and can apply tension to the second tension rope 240 in a radial direction perpendicular to the loading disk 210 toward the other side of the loading disk 210 through this loading component 250. By adjusting the tension of the first tension rope 230 and the second tension rope 240 respectively through the two loading components 250, the first tension rope 230 and the second tension rope 240 can form a force couple, thereby applying torque to the loading disk 210. Under the flexible action of the first tension rope 230 and the second tension rope 240, the influence of the deformation of the loading disk 210 on the torque loading direction can be offset, so that the first tension rope 230 and the second tension rope 240 are always set in a horizontal direction, avoiding additional shear force on the gear shaft 410 of the accessory transmission housing 400. This ensures the accuracy of the static torsion test results and expands the torque loading range during the static torsion test. At the same time, by having the first tension rope 230 and the second tension rope 240 respectively wound around the loading disk 210, the friction between the first tension rope 230 and the second tension rope 240 and the loading disk 210 can be further reduced, ensuring the reliability of the torque loading in the static torsion test.

[0032] Furthermore, an outer groove 211 and an inner groove 212 are respectively formed on the loading disk 210 along the circumference of the loading disk 210. The first tension rope 230 is wound around the outer groove 211 of the loading disk 210 along the circumference of the loading disk 210 at one end, and the first tension rope 230 is fixedly set at the bottom of the outer groove 211 of the loading disk 210 at one end. The second tension rope 240 is wound around the inner groove 212 of the loading disk 210 along the circumference of the loading disk 210 at one end, and the second tension rope 240 is fixedly set at the bottom of the inner groove 212 of the loading disk 210 at one end. Furthermore, before applying torque, the first tension rope 230, with its end near the loading disk 210, is wound clockwise around the outer groove 211 at least two turns, and the second tension rope 240, with its end near the loading disk 210, is wound counterclockwise around the inner groove 212 at least two turns. When applying torque, the first tension rope 230 and the second tension rope 240 can extend relative to the loading disk 210 in a radial direction perpendicular to the loading disk 210, thereby ensuring that the first tension rope 230 and the second tension rope 240 are always kept horizontal, ensuring reliable torque application.

[0033] Furthermore, the loading disk 210 is connected to the gear shaft 410 of the accessory transmission housing 400 via a torque transmission shaft 220. The middle of one side of the loading disk 210 is positioned with the shoulder of the torque transmission shaft 220, and the other side of the loading disk 210 is coaxially fixed to the torque transmission shaft 220 via a first nut 222. A first flat key 221 is embedded between the inner wall of the loading disk 210 and the outer wall of the end of the torque transmission shaft 220 away from the accessory transmission housing 400, thereby enabling circumferential positioning and torque transmission between the loading disk 210 and the torque transmission shaft 220 via the first flat key 221. The end of the torque transmission shaft 220 away from the loading disk 210 is axially positioned with the gear shaft 410 of the accessory transmission housing 400 via a shoulder, and is connected to the gear shaft 410 of the accessory transmission housing 400 via an external spline at the end of the torque transmission shaft 220 away from the loading disk 210. By setting the torsion shaft 220, the distance L between the center of the outer groove 211 and the center of the gear shaft 410 of the accessory transmission housing 400 is much larger than the distance l between the center of the outer groove 211 and the center of the inner groove 212. This makes the difference between the bending moments of the first tension rope 230 and the second tension rope 240 to the center of the gear shaft 410 of the accessory transmission housing 400 in the horizontal direction negligible, thereby improving the accuracy of the static torsion test results.

[0034] It should be noted that the two loading components 250 can apply a first preset tension and a second preset tension to the first tension rope 230 and the second tension rope 240 respectively. When the tension applied to the first tension rope 230 and the second tension rope 240 is the same, a pair of force couples can be formed. The resultant force of the force couples in the horizontal direction can cancel each other out, and torque can be effectively applied. Even if the loaded torque is greater than 200 N·m, the accuracy of the static torsion test results can be guaranteed, and the torque loading range during the static torsion test can be expanded.

[0035] The total torque provided by the first tension rope 230 and the second tension rope 240 is obtained by the following formula: M=2F r=F d, where M is the total torque provided by the first tension rope 230 and the second tension rope 240, F is the same first preset tension and second preset tension applied by the first tension rope 230 and the second tension rope 240 respectively, r is the radius of the loading disk 210, and d is the diameter of the loading disk 210. By adjusting the diameter of the loading disk 210 or adjusting the tightening stroke of the first tension rope 230 and the second tension rope 240, the applied torque can be increased effectively and quickly, thereby improving the test loading capacity.

[0036] In some specific embodiments of this application, referring to FIG5, the loading assembly 250 includes: a fixed beam 251, a fixed sleeve 252, and a pull rod 253. The fixed sleeve 252 is disposed on the fixed beam 251, and a first pull hole is provided on the fixed sleeve 252 in the horizontal direction. The pull rod 253 is threadedly inserted into the end of the first pull hole away from the loading disk 210, and the pull rod 253 is connected to the end of the first tension rope 230 or the second tension rope 240 away from the loading disk 210.

[0037] Specifically, a fixing sleeve 252 is mounted on a fixing beam 251. The fixing sleeve 252 has a first pull hole along the horizontal direction, allowing the ends of the first tension rope 230 and the second tension rope 240 furthest from the loading disk 210 to be inserted into the corresponding first pull holes of the fixing sleeve 252. A pull rod 253 is threadedly inserted into the end of the first pull hole furthest from the loading disk 210. The insertion depth of the pull rod 253 within the first pull hole can be adjusted by turning it. The ends of the first tension rope 230 and the second tension rope 240 furthest from the loading disk 210 are connected to the corresponding pull rods 253, thereby adjusting the tension on the first tension rope 230 or the second tension rope 240 by moving the pull rod 253 within the first pull hole. When the pull rod 253 moves away from the loading disk 210 within the first pull hole, it can pull the first tension rope 230 or the second tension rope 240, thereby increasing the tension on the first tension rope 230 or the second tension rope 240. When the pull rod 253 moves closer to the loading disk 210 within the first pull hole, it can loosen the first tension rope 230 or the second tension rope 240, thereby reducing the tension on the first tension rope 230 or the second tension rope 240.

[0038] In some specific embodiments of this application, referring to FIG5, a second pull hole is provided on the pull rod 253 coaxially with the first pull hole. A buckle 254 is provided at the end of the pull rod 253 away from the loading disk 210, and the buckle 254 is connected to the end of the first tension rope 230 or the second tension rope 240 away from the loading disk 210.

[0039] Specifically, a second pull hole is coaxially arranged on the pull rod 253 with the first pull hole, and a buckle 254 is provided at the end of the pull rod 253 away from the loading plate 210. The ends of the first tension rope 230 and the second tension rope 240 away from the loading plate 210 are sequentially inserted into the first pull hole of the corresponding fixing sleeve 252 and the second pull hole of the corresponding pull rod 253, and engaged with the corresponding buckle 254. By setting the second pull hole, the length of the pull rod 253 that can be inserted into the first pull hole can be increased. By continuously twisting the pull rod 253 outward, tension can be continuously provided to the first tension rope 230 and the second tension rope 240, thereby increasing the range of tension applied to the first tension rope 230 and the second tension rope 240, and thus expanding the torque loading range during the static torsion test. Furthermore, it can ensure the continuous and accurate application of tension.

[0040] In some specific embodiments of this application, referring to FIG5, the loading assembly 250 further includes a force sensor 255. The force sensor 255 is disposed on the fixed beam 251, and the fixed sleeve 252 is connected to the fixed beam 251 through the force sensor 255. A detection cavity is provided on the force sensor 255 coaxially with the first pull hole. One end of the first tension rope 230 or the second tension rope 240 away from the loading disk 210 passes through the detection cavity into the first pull hole and is connected to the pull rod 253.

[0041] Specifically, a stud 256 is fixedly mounted on the fixed beam 251 via a second nut 257. A force sensor 255 is mounted on the fixed beam 251 via the stud 256. A fixing sleeve 252 is fixedly connected to the force sensor 255. The force sensor 255 has a detection chamber coaxially arranged with the first pull hole. The ends of the first tension rope 230 and the second tension rope 240, away from the loading disk 210, are sequentially passed through the corresponding second nut 257, stud 256, and the detection chamber of the force sensor 255 into the first pull hole of the fixing sleeve 252. The detection chamber allows for the detection of the tension applied to the first tension rope 230 and the second tension rope 240, facilitating adjustment of the applied tension and ensuring the stable formation of the force couple.

[0042] In some specific embodiments of this application, referring to FIG7, multiple loading disks 210 are provided, and each loading disk 210 corresponds one-to-one with a multiple gear shaft 410 of the accessory transmission housing 400. A first tension rope 230 and a second tension rope 240 are wound around each loading disk 210. Multiple fixing sleeves 252 and multiple fixing beams 251 are provided, and each fixing sleeve 252 and multiple fixing beams 251 corresponds one-to-one with a multiple first tension rope 230 and a multiple second tension rope 240.

[0043] Specifically, multiple loading discs 210 correspond one-to-one with multiple gear shafts 410 of the accessory transmission housing 400. Each loading disc 210 is wound with a first tension rope 230 and a second tension rope 240. The end of each first tension rope 230 and second tension rope 240 away from the first loading disc 210 is sequentially inserted into the detection cavity of the corresponding second nut 257, stud 256, force sensor 255, and the first pull hole of the fixing sleeve 252, thereby enabling simultaneous loading of torque from multiple accessories and improving overall efficiency.

[0044] In some specific embodiments of this application, referring to FIG6, the anti-torsion part 300 includes a pressing assembly. The pressing assembly is disposed on the second mounting plate 130, and the flat bevel gear 330 is sleeved on the pressing assembly. The pressing assembly drives the flat bevel gear 330 to apply a first preset pressure to the helical bevel gear 320.

[0045] Specifically, the extrusion assembly is mounted on the second mounting plate 130, and the flat bevel gear 330 is sleeved on the extrusion assembly. The extrusion assembly can drive the flat bevel gear 330 to apply a first preset pressure to the helical bevel gear 320. By adjusting the value of the first preset pressure applied by the flat bevel gear 330 to the helical bevel gear 320, the boundary conditions of the static torsion test are made similar to or consistent with the actual use conditions, thereby meeting the anti-torsion requirements of the accessory transmission housing 400 of the aero-engine.

[0046] Furthermore, the flat bevel gear 330, the helical bevel gear 320, and the extrusion assembly are all housed within the intermediate housing 310, thereby preventing them from being affected by external factors.

[0047] In some specific embodiments of this application, referring to FIG6, the extrusion assembly includes: a fixed base 340, a first shaft sleeve 350, and a second shaft sleeve 360. The fixed base 340 is fixedly disposed on the second mounting plate 130. The first shaft sleeve 350 is fixedly disposed on the second mounting plate 130. One end of the second shaft sleeve 360 ​​is inserted into the first shaft sleeve 350, and a second flat key 370 is embedded between the inner wall of the first shaft sleeve 350 and the outer wall of the second shaft sleeve 360. A flat bevel gear 330 is sleeved on the end of the second shaft sleeve 360 ​​away from the first shaft sleeve 350, and the inner wall of the flat bevel gear 330 is splinedly connected to the outer wall of the second shaft sleeve 360. A clamping nut 341 is threaded along the axial direction of the second shaft sleeve 360 ​​on the fixed base 340, and the clamping nut 341 abuts against the end of the second shaft sleeve 360 ​​inserted into the first shaft sleeve 350.

[0048] Specifically, the fixed base 340 is fixedly mounted on the second mounting plate 130, the first shaft sleeve 350 is fixedly mounted on the second mounting plate 130, one end of the second shaft sleeve 360 ​​is inserted into the first shaft sleeve 350, and a second flat key 370 is embedded between the inner wall of the first shaft sleeve 350 and the outer wall of the second shaft sleeve 360, thereby realizing the circumferential positioning of the first shaft sleeve 350 and the second shaft sleeve 360, and enabling torque transmission between the first shaft sleeve 350 and the second shaft sleeve 360. A flat bevel gear 330 is sleeved on the end of the second shaft sleeve 360 ​​away from the first shaft sleeve 350. One end of the flat bevel gear 330 is a bevel gear for meshing with the helical bevel gear 320. The other end of the flat bevel gear 330 is a hollow shaft for sleeved on the second shaft sleeve 360 ​​and positioned by the shoulder of the second shaft sleeve 360. The inner wall of the hollow shaft of the flat bevel gear 330 is provided with an internal spline, and the outer wall of the second shaft sleeve 360 ​​is provided with an external spline, thereby realizing the spline connection between the flat bevel gear 330 and the second shaft sleeve 360. This allows the torque of the helical bevel gear 320 to pass through the flat bevel gear 330 and the second shaft sleeve 360 ​​in sequence to reach the first shaft sleeve 350 for torque stopping. Furthermore, a clamping nut 341 is threaded along the axial direction of the second shaft sleeve 360 ​​on the fixed base 340. The clamping nut 341 abuts against one end of the second shaft sleeve 360 ​​inserted into the first shaft sleeve 350. By tightening the clamping nut 341, the clamping nut 341 can be driven to move along the axial direction of the second shaft sleeve 360. Thus, the clamping degree of the clamping nut 341 is adjusted to the second shaft sleeve 360, thereby adjusting the axial position of the flat bevel gear 330 and the axial force applied to the helical bevel gear 320.

[0049] Furthermore, a through hole is provided on the second mounting plate 130. The fixing sleeve 252 is fixedly installed on the side of the second mounting plate 130 away from the installation space and covers the through hole. One end of the first shaft sleeve 350 passes through the through hole and is bent between the fixing seat 340 and the second mounting plate 130, so that the first shaft sleeve 350 is fixedly installed on the second mounting plate 130 through the fixing seat 340. The other end of the first shaft sleeve 350 passes through the through hole into the intermediate housing 310. The end of the first shaft sleeve 350 that passes into the intermediate housing 310 is connected to the second shaft sleeve 360, so that the fixing seat 340 and the clamping nut 341 on the fixing seat 340 are located outside the installation space, so as to facilitate the adjustment of the clamping nut 341, and thus facilitate the adjustment of the axial position of the flat bevel gear 330 and the axial force applied to the helical bevel gear 320.

[0050] Furthermore, the end of the second shaft sleeve 360 ​​near the clamping nut 341 is fixedly covered by the first baffle 361, and the second shaft sleeve 360 ​​abuts against the clamping nut 341 coaxially through the first baffle 361. The end of the second shaft sleeve 360 ​​away from the clamping nut 341 is fixedly covered by the second baffle 362, and the second baffle 362 presses the flat bevel gear 330 onto the second shaft sleeve 360.

[0051] The relationship between the first preset pressure as axial force and the anti-torque torque is: F0=M0 / (K·d0), where F0 is the first preset pressure as axial force, M0 is the anti-torque torque sufficient to prevent torsion, d0 is the nominal diameter of the clamping nut 341, and K is the torque coefficient, which can be obtained by consulting the mechanical design manual.

[0052] Referring to Figure 8, this application embodiment also provides a method for static torsion testing of a gear shaft, employing the gear shaft static torsion testing device as described in any of the above specific embodiments, including the following steps: driving a first tension rope 230 to apply a first preset tension along the horizontal direction on one side of the loading disk 210 in a direction away from the loading disk 210. Driving a second tension rope 240 to apply a second preset tension along the horizontal direction on the other side of the loading disk 210 in a direction away from the loading disk 210; adjusting the first preset tension and the second preset tension so that the first preset tension and the second preset tension are the same. The loading disk 210 transmits torque to the gear shaft 410 of the accessory transmission housing 400.

[0053] Specifically, the two loading components 250 can adjust the first preset tension and the second preset tension for the first tension rope 230 and the second tension rope 240, respectively. When the first preset tension and the second preset tension are the same, the first tension rope 230 and the second tension rope 240 can form a couple, thereby applying torque to the loading disk 210. Under the flexible action of the first tension rope 230 and the second tension rope 240, the influence of the deformation of the loading disk 210 on the torque loading direction can be offset, so that the first tension rope 230 and the second tension rope 240 are always set in a horizontal direction, avoiding additional shear force on the gear shaft 410 of the accessory transmission housing 400. This ensures the accuracy of the static torsion test results and expands the torque loading range during the static torsion test. At the same time, by winding the first tension rope 230 and the second tension rope 240 around the loading disk 210, the friction between the first tension rope 230 and the second tension rope 240 and the loading disk 210 can be further reduced, ensuring the reliability of the torque loading in the static torsion test.

[0054] Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A gear shaft static torsion testing device, characterized in that, include: Mounting section (100), the mounting section (100) is provided with mounting space, the mounting space is used to mount accessory transmission housing (400); loading section (200), the loading section (200) is provided with loading disk (210), the loading disk (210) is connected to the gear shaft (410) of the accessory transmission housing (400) for transmission; the loading section (200) is also provided with a first tension rope (230) and a second tension rope (240); one end of the first tension rope (230) is wound around the loading disk (210) circumferentially, and the other end of the first tension rope (230) extends horizontally toward one side of the loading disk (210); One end of the second tension rope (240) is wound around the loading disk (210) along the circumference of the loading disk (210), and the other end of the first tension rope (230) extends horizontally toward the other side of the loading disk (210); an outer groove (211) and an inner groove (212) are respectively opened on the loading disk (210) along the circumference of the loading disk (210); the end of the first tension rope (230) near the loading disk (210) is wound around the outer groove (211) along the circumference of the loading disk (210); the end of the second tension rope (240) near the loading disk (210) is wound around the inner groove (212) along the circumference of the loading disk (210).

2. The gear shaft static torsion testing device according to claim 1, characterized in that, Also includes: An anti-torsion part (300) is disposed within the installation space; a helical bevel gear (320) is disposed on the anti-torsion part (300), and the helical bevel gear (320) is connected to the gear shaft (410) of the accessory transmission housing (400); a flat bevel gear (330) is also disposed on the anti-torsion part (300), and the flat bevel gear (330) meshes with the helical bevel gear (320), and the flat bevel gear (330) applies a first preset pressure to the helical bevel gear (320).

3. The gear shaft static torsion testing device according to claim 2, characterized in that, The mounting part (100) includes: a first mounting plate (120) and a second mounting plate (130), the first mounting plate (120) and the second mounting plate (130) being spaced apart, forming the mounting space between the first mounting plate (120) and the second mounting plate (130); one end of the accessory transmission housing (400) is connected to the first mounting plate (120); the other end of the accessory transmission housing (400) is connected to the second mounting plate (130) through the anti-torsion part (300).

4. The gear shaft static torsion testing device according to claim 1, characterized in that, The loading unit (200) includes: a loading component (250), two loading components (250) are provided, and the two loading components (250) are provided on both sides of the loading disk (210); one loading component (250) is connected to the end of the first tension rope (230) away from the loading disk (210), and applies tension to the first tension rope (230) in a direction away from the loading disk (210); the other loading component (250) is connected to the end of the second tension rope (240) away from the loading disk (210), and applies tension to the second tension rope (240) in a direction away from the loading disk (210).

5. The gear shaft static torsion testing device according to claim 4, characterized in that, The loading assembly (250) includes: a fixed beam (251); a fixed sleeve (252), which is disposed on the fixed beam (251) and has a first pull hole in the horizontal direction; and a pull rod (253), which is threadedly inserted into the end of the first pull hole away from the loading disk (210) and is connected to the end of the first tension rope (230) or the second tension rope (240) away from the loading disk (210).

6. The gear shaft static torsion testing device according to claim 5, characterized in that, The pull rod (253) has a second pull hole coaxially with the first pull hole; a buckle (254) is provided at the end of the pull rod (253) away from the loading disk (210), and the buckle (254) is connected to the end of the first tension rope (230) or the second tension rope (240) away from the loading disk (210).

7. The gear shaft static torsion testing device according to claim 5, characterized in that, The loading assembly (250) further includes: a force sensor (255), which is disposed on the fixed beam (251), and the fixed sleeve (252) is connected to the fixed beam (251) through the force sensor (255); a detection cavity is disposed on the force sensor (255) coaxially with the first pull hole; one end of the first tension rope (230) or the second tension rope (240) away from the loading disk (210) passes through the detection cavity to the first pull hole and is connected to the pull rod (253).

8. The gear shaft static torsion testing device according to claim 5, characterized in that, Multiple loading discs (210) are provided, and each loading disc (210) corresponds one-to-one with a multiple gear shaft (410) of the accessory transmission housing (400); each loading disc (210) is wound with a first tension rope (230) and a second tension rope (240); multiple fixing sleeves (252) and multiple fixing beams (251) are provided, and each fixing sleeve (252) and multiple fixing beams (251) corresponds one-to-one with a multiple first tension rope (230) and a multiple second tension rope (240).

9. The gear shaft static torsion testing device according to claim 3, characterized in that, The anti-torsion part (300) includes: a pressing assembly, which is disposed on the second mounting plate (130), and the flat bevel gear (330) is sleeved on the pressing assembly; the pressing assembly drives the flat bevel gear (330) to apply a first preset pressure to the helical bevel gear (320).

10. The gear shaft static torsion testing device according to claim 9, characterized in that, The extrusion assembly includes: a fixed base (340) fixedly mounted on the second mounting plate (130); a first bushing (350) fixedly mounted on the second mounting plate (130); and a second bushing (360), one end of which is inserted into the first bushing (350), and a second flat key is embedded between the inner wall of the first bushing (350) and the outer wall of the second bushing (360). 370); the flat bevel gear (330) is sleeved on the end of the second shaft sleeve (360) away from the first shaft sleeve (350), and the inner wall of the flat bevel gear (330) is splinedly connected to the outer wall of the second shaft sleeve (360); a clamping nut (341) is threaded along the axial direction of the second shaft sleeve (360) on the fixed seat (340), and the clamping nut (341) abuts against the end of the second shaft sleeve (360) inserted into the first shaft sleeve (350).

11. A method for static torsion testing of a gear shaft, employing the gear shaft static torsion testing apparatus as described in any one of claims 1 to 10, characterized in that, Includes the following steps: The first tension rope (230) is driven to apply a first preset tension in the horizontal direction on one side of the loading disk (210) in a direction away from the loading disk (210); the second tension rope (240) is driven to apply a second preset tension in the horizontal direction on the other side of the loading disk (210) in a direction away from the loading disk (210); the first preset tension and the second preset tension are adjusted so that the first preset pressure and the second preset tension are the same; the loading disk (210) transmits torque to the gear shaft (410) of the accessory transmission housing (400).

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