A diaphragm coupling shaft disconnect device and method of disconnecting the same

Abstract

The application discloses a diaphragm connecting shaft disconnecting device and a disconnecting method thereof, and belongs to the technical field of aero-engine test running, which comprises a connector, the connector is used for being connected to a flywheel, the top of a fixing part is connected with the connector, the top end of a shaft pulling part is clamped with the bottom end of the fixing part, and the bottom end of the shaft pulling part is used for clamping a clamp on the outer wall of the diaphragm connecting shaft; a driving mechanism is used for driving an engine mounting frame and an aero-engine to be close to or away from a dynamometer, and the shaft pulling part is also used for abutting against the diaphragm to limit the movement of the diaphragm connecting shaft when the driving mechanism drives the engine mounting frame and the aero-engine to be away from the dynamometer, so as to disconnect the diaphragm connecting shaft from the engine output shaft. The application aims to design a new diaphragm connecting shaft disconnecting method and device for aero-engine test running, replace the existing manual shaking and pulling mode, solve the problem that the diaphragm connecting shaft and the engine output shaft are not damaged when the diaphragm connecting shaft and the engine output shaft are disconnected, reduce the operation time, and reduce the operation difficulty.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aero-engine test running, in particular to a diaphragm coupling shaft disconnecting device. In addition, the present application also relates to a disconnecting method comprising the diaphragm coupling shaft disconnecting device. BACKGROUND

[0002] The information provided in this section is for the purpose of generally presenting the context of the application. The work of the presently named inventors, to the extent the descriptions are described in this section, as well as the descriptions of the aspects that can not be prior art at the time of filing, are neither expressly nor impliedly admitted to be prior art against the present application.

[0003] When the aero-engine is tested, the engine output shaft needs to be connected with the dynamometer system. The aero-engine belongs to a high-precision, high-power, high-speed and high-torque device, and when it is tested, the parameters such as speed and power need to be frequently switched. The output shaft connection should meet the requirements of accurate transmission, high torque transmission, good centering performance and good dynamic performance.

[0004] In recent years, in the field of aero-engine test running, a diaphragm coupling shaft is widely used to realize the connection between the aero-engine and the dynamometer system. The diaphragm coupling shaft is a high-speed rotating part with high strength and good toughness, and its design and manufacturing cost is high. One end of the diaphragm coupling shaft penetrates through the engine front end air inlet cover and is connected with the engine output shaft inside through involute spline cooperation, and a sealing ring is also installed to prevent the leakage of engine internal lubricating oil and the loosening of the diaphragm coupling shaft during test running. The other end of the diaphragm coupling shaft is connected with the high-speed flywheel input shaft in the dynamometer system.

[0005] When the engine test is completed, the diaphragm coupling shaft needs to be disconnected from the aero-engine output shaft. Because the gap between the diaphragm coupling shaft and the output shaft is very small, the previous disconnecting method is to coordinate multiple operators to manually shake and pull to directly disconnect the diaphragm coupling shaft from the engine output shaft, which is difficult to operate.

[0006] This disconnecting method has the following problems:

[0007] 1. Damage. Manual shaking and pulling will cause damage to the diaphragm coupling shaft, greatly reducing its service life. The impact generated by manual shaking and pulling may also cause damage to the engine output shaft, increasing the use cost;

[0008] 2. Time waste. Multiple operators are needed to coordinate, and a lot of test stand downtime is needed, which affects the test efficiency;

[0009] 3. Difficulty in operation. Operators need to have skilled operation skills, and it is difficult to disassemble. Operators lacking experience are difficult to complete, and it is not widely applicable.

[0010] It is to be understood that the information disclosed in the Background section is merely for the purpose of enhancing the understanding of the present application, and thus can include information that is not prior art to those skilled in the art. SUMMARY

[0011] In view of at least one of the above technical problems, the present application provides a diaphragm coupling shaft disconnecting device and a disconnecting method thereof, aiming to design a new aero-engine test diaphragm coupling shaft disconnecting method and device to replace the existing manual shaking and pulling method, solve the problem of not damaging the diaphragm coupling shaft and the engine output shaft when disconnecting the diaphragm coupling shaft and the engine output shaft, and reduce the operation time and difficulty.

[0012] According to an aspect of the present application, a diaphragm coupling shaft disconnecting device is provided for disassembling a diaphragm coupling shaft connecting an aero-engine and a dynamometer when the aero-engine is connected to the dynamometer for testing, the diaphragm coupling shaft being provided with a ring of diaphragms, wherein the aero-engine is installed on a movable engine mounting frame, a first end of the diaphragm coupling shaft is connected to an engine output shaft of the aero-engine, and a second end of the diaphragm coupling shaft is connected to an output shaft of a flywheel of the dynamometer, the diaphragm coupling shaft disconnecting device further comprising an adapter, a fixing member, a protective member, and a shaft pulling member:

[0013] The adapter is used to be connected to the flywheel through a preset connecting screw hole on the flywheel, the top of the fixing member is connected to the adapter, the top end of the shaft pulling member is clamped to the bottom end of the fixing member, and the bottom end of the shaft pulling member is used to clamp a forceps to the outer wall of the diaphragm coupling shaft;

[0014] The engine mounting frame is connected to a driving mechanism, the driving mechanism is used to drive the engine mounting frame and the aero-engine to approach or move away from the dynamometer, and the shaft pulling member is further used to abut against the diaphragm to limit the movement of the diaphragm coupling shaft when the driving mechanism drives the engine mounting frame and the aero-engine to move away from the dynamometer, thereby disconnecting the connection between the diaphragm coupling shaft and the engine output shaft.

[0015] In some embodiments of the present application, the diaphragm coupling shaft disconnecting device further comprises a protective member connected to the bottom end of the shaft pulling member, the protective member is used to clamp the forceps to the outer wall of the diaphragm coupling shaft, and the protective member is further used to abut against the diaphragm and provide a buffer for the shaft pulling member when the driving mechanism drives the engine mounting frame and the aero-engine to move away from the dynamometer.

[0016] In some embodiments of the present application, the fixing member comprises a first mounting portion in a plate-like structure, the top end of the first mounting portion is connected to the adapter, the bottom end of the first mounting portion is provided with a first hook portion, a first mounting groove with an open top is formed between the first hook portion and the first mounting portion, and the first mounting groove is used to limit the top end of the shaft pulling member.

[0017] In some embodiments of the present application, the top end of the pull shaft is provided with a second hook portion, and a second mounting groove with an open bottom is formed between the second hook portion and the pull shaft body. The second hook portion is used to be embedded in the first mounting groove, and the first hook portion is used to be embedded in the second mounting groove, so as to realize the clamping connection of the pull shaft and the fixing member.

[0018] In some embodiments of the present application, a third limiting groove is formed in the bottom end of the pull shaft, and the pull shaft is used to be clamped on the outer wall of the diaphragm connecting shaft through the third limiting groove. The protective member is an arc-shaped plate structure made of flexible material. A plurality of connecting screw holes are arranged at intervals on the outer circle of the third limiting groove of the pull shaft. A plurality of protective member screw holes corresponding to the connecting screw holes are arranged at intervals on the protective member. The protective member is connected with the pull shaft by connecting bolts passing through the protective member screw holes and the connecting screw holes in sequence.

[0019] In some embodiments of the present application, the diaphragm connecting shaft disconnecting device further comprises a connecting shaft bearing mechanism, which comprises a moving trolley and a bearing assembly. The bearing assembly is arranged on the moving trolley and is used to bear the diaphragm connecting shaft disconnected from the engine output shaft and falling.

[0020] In some embodiments of the present application, the bearing assembly comprises a first bearing member, a second bearing member, a connecting spring and a buffer spring. The first bearing member and the second bearing member are both arc-shaped plate structures. The first bearing member is arranged on the moving trolley through the buffer spring. The second bearing member is arranged on both sides of the first bearing member and is connected with the first bearing member through the connecting spring.

[0021] In some embodiments of the present application, the bearing assembly further comprises a sliding member. The second bearing member is provided with a sliding groove at one end close to the first bearing member. The sliding member is slidingly arranged in the sliding groove. The first end of the connecting spring is connected with the first bearing member, and the second end of the connecting spring is connected with the sliding member.

[0022] In some embodiments of the present application, the moving trolley comprises a bottom plate, an extension member and a push rod assembly. The bottom plate is provided with a plurality of universal wheels at the bottom. The push rod assembly is arranged on one side of the bottom plate. The extension member is arranged on the bottom plate, and the top end of the extension member is connected with the buffer spring.

[0023] According to another aspect of the present application, a diaphragm connecting shaft disconnecting method is also provided, which uses the diaphragm connecting shaft disconnecting device described above. The diaphragm connecting shaft disconnecting method comprises the following steps:

[0024] S100, installing the adapter through the pin shaft on the flywheel of the dynamometer;

[0025] S200, connecting the top end of the fixing member to the adapter through the bolt;

[0026] S300, the top end of the pulling shaft is clamped at the bottom end of the fixing piece, at this time the pulling shaft has a gap with the diaphragm of the diaphragm connecting shaft;

[0027] S400, the connecting screw of the diaphragm connecting shaft and the flywheel of the dynamometer is removed;

[0028] S500, the engine mounting frame and the aero-engine are driven by the driving mechanism to move away from the dynamometer at a constant speed, and the diaphragm connecting shaft moves synchronously with the aero-engine;

[0029] S600, when the diaphragm of the diaphragm connecting shaft abuts against the pulling shaft, the diaphragm connecting shaft is limited to move, at this time the aero-engine continues to move, and the diaphragm connecting shaft is gradually disconnected from the aero-engine;

[0030] S700, when the diaphragm connecting shaft is about to be disconnected from the aero-engine, the operator needs to hold the diaphragm connecting shaft with his hand to prevent the diaphragm connecting shaft from falling to the ground at the moment of disconnection.

[0031] The application has the following beneficial effects:

[0032] The diaphragm connecting shaft disconnection device of the application is connected to the flywheel of the dynamometer through the adapter to play the role of the mounting plate, then the top end of the fixing piece is connected to the adapter, the top end of the pulling shaft is clamped to the fixing piece, and the bottom end of the pulling shaft is clamped to the outer wall of the diaphragm connecting shaft. Then the engine mounting frame and the aero-engine can be driven by the driving mechanism to move close to or away from the dynamometer, and when the driving mechanism drives the engine mounting frame and the aero-engine to move away from the dynamometer, the diaphragm can be abutted by the pulling shaft to limit the movement of the diaphragm connecting shaft, thereby disconnecting the diaphragm connecting shaft from the engine output shaft, achieving rapid and stable disassembly of the diaphragm connecting shaft, and effectively avoiding damage to the diaphragm connecting shaft. The application adopts a stable driving aero-engine moving disconnection mode to avoid damage to the engine output shaft caused by shaking and pulling impact, and reduces the use cost.

[0033] The diaphragm connecting shaft disconnection method also has the above beneficial effects. It does not need multiple operators to cooperate to shake and pull the aero-engine, effectively avoids damage to the engine output shaft and the diaphragm connecting shaft, reduces the maintenance cost, effectively reduces the operation time, improves the work efficiency, greatly reduces the operation difficulty, and can be used in the shaft engine test bed, and has high universality.

[0034] Of course, implementing any product of the application does not necessarily need to achieve all the advantages described above. In addition to the purposes, features and advantages described above, the application has other purposes, features and advantages. The application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0035] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application and are incorporated herein in

[0036] Figure 1 is an installation schematic view of a diaphragm coupling shaft of the preferred embodiment of the present application;

[0037] Figure 2 is a structural schematic view of an engine mounting frame of the preferred embodiment of the present application;

[0038] Figure 3 is an installation schematic view of a pulling shaft piece of the preferred embodiment of the present application;

[0039] Figure 4 is an installation schematic view of a fixing piece of the preferred embodiment of the present application;

[0040] Figure 5 is a structural schematic view of an adapter of the preferred embodiment of the present application;

[0041] Figure 6 is a structural schematic view of a fixing piece of the preferred embodiment of the present application;

[0042] Figure 7 is a side view schematic view of a fixing piece of the preferred embodiment of the present application;

[0043] Figure 8 is a side view schematic view of a pulling shaft piece of the preferred embodiment of the present application;

[0044] Figure 9 is a front view schematic view of a pulling shaft piece of the preferred embodiment of the present application;

[0045] Figure 10 is a front view schematic view of a protection piece of the preferred embodiment of the present application;

[0046] Figure 11 is a side view schematic view of a protection piece of the preferred embodiment of the present application;

[0047] Figure 12 is a structural schematic view of a moving trolley of the preferred embodiment of the present application;

[0048] Figure 13 is a structural schematic view of a receiving assembly of the preferred embodiment of the present application;

[0049] Legend: 100, dynamometer; 101, flywheel; 200, aero-engine; 201, engine front end air intake cover; 300, diaphragm coupling shaft; 301, diaphragm; 400, engine mounting frame; 401, mounting guide rail; 402, actuator cylinder; 403, mounting support plate; 1, adapter; 11, first mounting hole; 12, weight reduction groove; 2, fixing piece; 21, first mounting part; 22, first mounting groove; 23, first hook part; 24, second mounting hole; 25, first limiting groove; 3, protective piece; 31, second limiting groove; 32, protective piece screw hole; 4, pull shaft piece; 41, second hook part; 42, second mounting groove; 43, second mounting part; 44, third limiting groove; 5, moving trolley; 51, bottom plate; 52, universal wheel; 53, telescopic piece; 531, fixed column; 532, telescopic column; 533, first locking piece; 54, push rod; 55, handle; 6, receiving assembly; 61, first receiving piece; 62, second receiving piece; 63, sliding piece; 64, connecting spring; 65, second locking piece; 66, buffer spring. DETAILED DESCRIPTION

[0050] The embodiments of the present application are described in detail below with reference to the accompanying drawings, but the present application can be implemented in various different ways as defined and covered by the following.

[0051] Figure 1 is a mounting schematic diagram of the diaphragm coupling shaft of the preferred embodiment of the present application; Figure 2 is a structural schematic diagram of the engine mounting frame of the preferred embodiment of the present application; Figure 3 is a mounting schematic diagram of the pull shaft piece of the preferred embodiment of the present application; Figure 4 is a mounting schematic diagram of the fixing piece of the preferred embodiment of the present application; Figure 5 is a structural schematic diagram of the adapter of the preferred embodiment of the present application; Figure 6 is a structural schematic diagram of the fixing piece of the preferred embodiment of the present application; Figure 7 is a side view schematic diagram of the fixing piece of the preferred embodiment of the present application; Figure 8 is a side view schematic diagram of the pull shaft piece of the preferred embodiment of the present application; Figure 9 is a front view schematic diagram of the pull shaft piece of the preferred embodiment of the present application;

[0052] Figure 10 is a front view schematic diagram of the protective piece of the preferred embodiment of the present application; Figure 11 is a side view schematic diagram of the protective piece of the preferred embodiment of the present application; Figure 12 is a structural schematic diagram of the moving trolley of the preferred embodiment of the present application; Figure 13 is a structural schematic diagram of the receiving assembly of the preferred embodiment of the present application.

[0053] The utility model provides a diaphragm coupling shaft disconnecting device for disconnecting the diaphragm coupling shaft 300 connecting the aero-engine 200 and the dynamometer 100 when the aero-engine 200 is connected to the dynamometer 100 for test running, the diaphragm coupling shaft 300 is provided with a circle of diaphragm 301, wherein the aero-engine 200 is arranged on the movable engine mounting frame 400, the first end of the diaphragm coupling shaft 300 is connected with the engine output shaft of the aero-engine 200, and the second end of the diaphragm coupling shaft 300 is connected with the output shaft of the flywheel 101 of the dynamometer 100, and the diaphragm coupling shaft disconnecting device further comprises an adapter 1, a fixing part 2, a protective part 3 and a shaft pulling part 4.

[0054] The adapter 1 is connected to the flywheel 101 through the preset connecting screw hole on the flywheel 101, the top of the fixing part 2 is connected with the adapter 1, the top end of the shaft pulling part 4 is clamped with the bottom end of the fixing part 2, and the bottom end of the shaft pulling part 4 is used for clamping the pincers on the outer wall of the diaphragm coupling shaft 300.

[0055] The engine mounting frame 400 is connected with a driving mechanism, the driving mechanism is used for driving the engine mounting frame 400 and the aero-engine to be close to or away from the dynamometer 100, and the shaft pulling part 4 is further used for abutting against the diaphragm 301 to limit the movement of the diaphragm coupling shaft 300 when the driving mechanism drives the engine mounting frame 400 and the aero-engine 200 to be away from the dynamometer 100, so as to disconnect the diaphragm coupling shaft 300 and the engine output shaft.

[0056] Here, the meaning of the adapter 1 refers to the structure connected with the flywheel 101 of the dynamometer 100, in some embodiments, the adapter 1 is a plate-shaped structure, and a plurality of first mounting holes 11 are formed in the adapter 1 for matching the preset screw holes on the flywheel 101. A weight-reducing groove 12 is formed in the bottom of the adapter 1, so that the weight of the adapter 1 can be reduced.

[0057] Here, the meaning of the fixing part 2 refers to the structure fixedly installed on the side wall of the adapter 1, in some embodiments, the main body of the fixing part 2 is a plate-shaped structure.

[0058] In addition, the driving mechanism comprises an actuator 402, the bottom of the engine mounting frame 400 is provided with a mounting guide rail 401, the actuator 402 is in sliding connection with the mounting guide rail 401, and the actuator 402 drives the engine mounting frame 400 and the aero-engine 200 to move horizontally and uniformly through the actuator oil cylinder. The aero-engine 200 is installed on the mounting support plate 403 of the engine mounting frame 400, the diaphragm coupling shaft 300 passes through the engine front-end air inlet cover 201 of the aero-engine 200, and the diaphragm coupling shaft 300 is matched with the engine output shaft in the aero-engine 200 through the involute spline.

[0059] The diaphragm connecting shaft disconnecting device is connected to the flywheel 101 of the dynamometer 100 through the adapter 1 to play the role of the mounting plate, then is connected to the adapter 1 through the top end of the fixing member 2, and then the top end of the shaft pulling member 4 is clamped to the fixing member 2, and the bottom end clamping pincers of the shaft pulling member 4 are arranged on the outer wall of the diaphragm connecting shaft 300. Then the engine mounting frame 400 and the aero-engine 200 can be driven to move close to or away from the dynamometer 100 by the driving mechanism, and when the driving mechanism drives the engine mounting frame 400 and the aero-engine 200 to move away from the dynamometer 100, the shaft pulling member 4 can abut against the diaphragm 301 to limit the movement of the diaphragm connecting shaft 300, thereby disconnecting the diaphragm connecting shaft 300 and the engine output shaft, and the diaphragm connecting shaft 300 can be quickly and stably disassembled, and damage to the diaphragm connecting shaft 300 is effectively avoided; and the application adopts a stable driving aero-engine 200 to move the disconnecting mode, avoids damage to the engine output shaft caused by shaking and pulling impact, and reduces the use cost.

[0060] Preferably, as shown in Figure 3 , 4 , the diaphragm connecting shaft disconnecting device further comprises a protective member 3 connected to the bottom end of the shaft pulling member 4, the protective member 3 is used for clamping pincers arranged on the outer wall of the diaphragm connecting shaft 300, and the protective member 3 is also used for abutting against the diaphragm 301 and providing buffer for the shaft pulling member 4 when the driving mechanism drives the engine mounting frame 400 and the aero-engine 200 to move away from the dynamometer 100.

[0061] It can be understood that the protective member 3 is located between the shaft pulling member 4 and the diaphragm connecting shaft 300, the bottom end of the shaft pulling member 4 is provided with a third limiting groove 44 for clamping the outer wall of the diaphragm connecting shaft 300, the bottom end of the protective member 3 is provided with a second limiting groove 31 matching the machining size of the third limiting groove 44, and the protective member 3 and the shaft pulling member 4 are connected and fixed by screws to prevent loosening and falling off during operation.

[0062] It should be noted that the protective member 3 is a protective bushing, which is made of rubber, and can prevent the diaphragm connecting shaft 300 from being scratched or damaged by the shaft pulling member 4 during disconnection.

[0063] Of course, the application does not exclude the scheme of directly setting a flexible cloth or a sponge pad on the shaft pulling member 4 as a buffer.

[0064] Preferably, as shown in Figure 3 , 4 , 6, 7, 8, 9, the fixing member 2 comprises a first mounting part 21 of a plate structure, the top end of the first mounting part 21 is connected to the adapter 1, the bottom end of the first mounting part 21 is provided with a first hook part 23, a first mounting groove 22 with an open top is formed between the first hook part 23 and the first mounting part 21, and the first mounting groove 22 is used for limiting the top end of the shaft pulling member 4.

[0065] Specifically, the top end of the pull shaft 4 is provided with a second hook portion 41, and a second mounting groove 42 with an open bottom is formed between the second hook portion 41 and the body of the pull shaft 4. The second hook portion 41 is used to be embedded in the first mounting groove 22, and the first hook portion 23 is used to be embedded in the second mounting groove 42, so as to realize the clamping connection of the pull shaft 4 and the fixing member 2.

[0066] It can be understood that the bottom end of the fixing member 2 is hook-shaped, and the top end of the pull shaft 4 is also hook-shaped, so that the clamping connection of the fixing member 2 and the pull shaft 4 can be conveniently realized, the pull shaft 4 can be conveniently disassembled and assembled, and the pull shaft 4 is not fixedly connected, so that the pull shaft 4 is not easily damaged by rigid impact. In addition, the non-rigid connection of the pull shaft 4 can also avoid direct impact on the diaphragm 301 and the diaphragm connecting shaft 300 when the pull shaft 4 abuts against the diaphragm 301. In addition, the buffering protection effect of the protective member 3 can reduce the damage of parts during disassembly.

[0067] It should be noted that the bottom wall of the first mounting groove 22 is an arc surface structure facing the top of the fixing member 2, that is, the first mounting groove 22 is an arc-shaped groove structure. Correspondingly, the top wall of the second mounting groove 42 is also an arc surface structure to cooperate with the bottom wall of the first mounting groove 22, so as to facilitate the adjustment of the installation position when the pull shaft 4 is clamped and installed.

[0068] Preferably, as shown in Figure 3 , 4 , the bottom end of the pull shaft 4 is provided with a third limiting groove 44, and the pull shaft 4 is used to be clamped on the outer wall of the diaphragm connecting shaft 300 through the third limiting groove 44. The protective member 3 is an arc-shaped plate structure made of flexible material. A plurality of connecting screw holes are arranged on the pull shaft 4 at intervals outside the outer circle of the third limiting groove 44. A plurality of protective member screw holes 32 corresponding to the connecting screw holes are arranged on the protective member 3 at intervals. The protective member 3 is connected with the pull shaft 4 by connecting bolts passing through the protective member screw holes 32 and the connecting screw holes in sequence.

[0069] It can be understood that the protective member 3 can be conveniently installed on the side wall of the pull shaft 4 through the connecting bolts, and the protective member 3 made of flexible material can simultaneously protect the pull shaft 4 and the diaphragm 301. Since the protective member 3 is detachably installed, it is convenient for subsequent replacement and ensures the protection effect.

[0070] Preferably, as shown in Figure 12 and 13 , the diaphragm connecting shaft disconnecting device further comprises a connecting shaft bearing mechanism, and the connecting shaft bearing mechanism comprises a moving trolley 5 and a bearing assembly 6. The bearing assembly 6 is arranged on the moving trolley 5, and the bearing assembly 6 is used to bear the diaphragm connecting shaft 300 disconnected from the engine output shaft and falling off.

[0071] It can be understood that during the process of disassembling the diaphragm connecting shaft 300, when the diaphragm connecting shaft 300 is about to be disconnected with the aero-engine 200, it is usually necessary for the operator to hold the diaphragm connecting shaft 300 with his hand to prevent the diaphragm connecting shaft 300 from falling to the ground at the moment of disconnection. This process is unstable and requires additional manpower, resulting in limited operation space. Therefore, by directly receiving the falling diaphragm connecting shaft 300 during the disassembly process through the receiving assembly 6, the operation efficiency can be further improved and the safety of personnel can be ensured.

[0072] In the preferred embodiment, referring to Figure 12 and 13 , the receiving assembly 6 includes a first receiving piece 61, a second receiving piece 62, a connecting spring 64 and a buffer spring 66. The first receiving piece 61 and the second receiving piece 62 are both arc-shaped plate structures. The first receiving piece 61 is arranged on the moving trolley 5 through the buffer spring 66, and the second receiving piece 62 is arranged on both sides of the first receiving piece 61 and connected with the first receiving piece 61 through the connecting spring 64 respectively.

[0073] It can be understood that the second receiving piece 62 is connected on both sides of the first receiving piece 61 through the connecting spring 64, and the first receiving piece 61 is directly connected with the moving trolley 5 through the buffer spring 66. When the diaphragm connecting shaft 300 falls onto the receiving assembly 6, whether it contacts the first receiving piece 61 first or the second receiving piece 62 first, it can be fully buffered, which can effectively reduce the impact when the diaphragm connecting shaft 300 falls. And the first receiving piece 61 and the second receiving piece 62 are both arc-shaped plate structures, which can realize the effect of rolling and buffering of the diaphragm connecting shaft 300 on the receiving assembly 6, ensuring smooth receiving of the diaphragm connecting shaft 300 without the need for additional manual receiving of the diaphragm connecting shaft 300.

[0074] Preferably, referring to Figure 13 , the receiving assembly 6 further includes a sliding piece 63. The second receiving piece 62 is provided with a sliding groove at one end close to the first receiving piece 61, and the sliding piece 63 is slidingly arranged in the sliding groove. The first end of the connecting spring 64 is connected with the first receiving piece 61, and the second end of the connecting spring 64 is connected with the sliding piece 63.

[0075] It can be understood that the sliding piece 63 can expand the installation distance of the second receiving piece 62, thereby expanding the receiving area of the receiving assembly 6, which is more conducive to smoothly receiving the diaphragm connecting shaft 300. At the same time, the sliding piece 63 can also enhance the buffering effect of the second receiving piece 62, especially when the sliding piece 63 is made of soft material in a plate structure, which can effectively improve the shock absorption effect of the second receiving piece 62.

[0076] It should be noted that the second receiving member 62 is provided with a limiting screw hole at the bottom, and a second locking member 65 is arranged in the limiting screw hole, and the second locking member 65 is used for tightly pressing the sliding member 63 to realize the locking and limiting of the sliding member 63, so that the position of the sliding member 63 can be conveniently adjusted.

[0077] Preferably, referring to Figure 12 As shown in the figure, the moving trolley 5 comprises a bottom plate 51, an extension member 53 and a push rod assembly, the bottom plate 51 is provided with a plurality of universal wheels 52 at the bottom, the push rod assembly is arranged on one side of the bottom plate 51, and the extension member 53 is arranged on the bottom plate 51 and connected with the buffer spring 66 at the top end.

[0078] It can be understood that the push rod assembly can facilitate the operator to push the moving trolley 5 and the receiving assembly 6 as a whole to move, so as to adjust the position of the receiving assembly 6, and the extension member 53 can drive the receiving assembly 6 to adjust the height, so as to adapt to the receiving requirements of the diaphragm connecting shaft 300 of different heights in different places, thereby improving the adaptability of the receiving function.

[0079] Specifically, the extension member 53 comprises a fixed column 531, an extension column 532 and a first locking member 533, the fixed column 531 is arranged on the bottom plate 51, the extension column 532 is slidingly arranged in the center hole of the fixed column 531, and the first locking member 533 is used for tightly pressing the extension column 532 through the side wall of the center hole, so as to lock and limit the extension column 532 to different heights, and the extension column 532 is connected with the buffer spring 66 at the top.

[0080] The push rod assembly comprises two push rods 54 arranged at intervals, and a handle 55 is arranged between the two push rods 54, so as to facilitate the operator to hold the handle 55 and move the moving trolley 5 as a whole.

[0081] In addition, a diaphragm connecting shaft disconnecting method is also provided, which adopts the above diaphragm connecting shaft disconnecting device, and the diaphragm connecting shaft disconnecting method comprises the following steps:

[0082] S100, the adapter 1 is installed on the flywheel 101 of the dynamometer 100 through the pin shaft;

[0083] S200, the top end of the fixing member 2 is connected to the adapter 1 through a bolt;

[0084] S300, the top end of the shaft pulling member 4 is clamped to the bottom end of the fixing member 2, and at this time, the shaft pulling member 4 has a gap with the diaphragm 301 of the diaphragm connecting shaft 300;

[0085] S400, the connecting screw of the diaphragm connecting shaft 300 and the flywheel 101 of the dynamometer 100 is removed;

[0086] S500, the engine mounting frame 400 and the aircraft engine 200 are driven by the driving mechanism to move away from the dynamometer 100 at a constant speed, and the diaphragm coupling shaft 300 moves synchronously with the aircraft engine 200;

[0087] S600: When the diaphragm 301 of the diaphragm coupling shaft 300 abuts against the shaft pulling member 4, the diaphragm coupling shaft 300 is restricted from moving. At this time, the aircraft engine 200 continues to move, and the diaphragm coupling shaft 300 is gradually disconnected from the aircraft engine 200.

[0088] S700: When the diaphragm coupling shaft 300 is about to be disconnected from the aircraft engine 200, the operator needs to hold the diaphragm coupling shaft 300 by hand to prevent the diaphragm coupling shaft 300 from falling to the ground at the moment of disconnection.

[0089] The diaphragm coupling shaft disconnection method of the present application also has the above-mentioned beneficial effects. It also includes the fact that there is no need for multiple operators to cooperate in shaking and pulling the aircraft engine 200, effectively avoiding damage to the engine output shaft and the diaphragm coupling shaft 300, and reducing maintenance costs; this method can effectively reduce operation time, improve work efficiency, and greatly reduce the difficulty of operation. It can be used on shaft engine test benches and has high universality. The present application aims to design a new method and device for disconnecting the diaphragm coupling shaft of an aircraft engine test, replacing the existing manual shaking and pulling method. The overall practicality of the present application is strong, the operation and equipment management are simple and convenient, and the subsequent maintenance is simple. It can be extended to use on engine test benches with similar structures, and can also be extended to use on related test equipment, and is used in occasions where shafts, discs, gears and other components are difficult to remove under normal conditions.

[0090] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0091] This article uses specific examples to illustrate the principles and implementation methods of this application. The above examples are only used to help understand the method and core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of this application, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as protected by this application.

Claims

1. A diaphragm coupling shaft disconnecting device for disconnecting a diaphragm coupling shaft (300) connecting an aero-engine (200) and a dynamometer (100) when the aero-engine (200) is connected to the dynamometer (100) for test running, wherein the diaphragm coupling shaft (300) is provided with a ring of diaphragms (301), the aero-engine (200) is installed on a movable engine mounting frame (400), a first end of the diaphragm coupling shaft (300) is connected to an engine output shaft of the aero-engine (200), and a second end of the diaphragm coupling shaft (300) is connected to an output shaft of a flywheel (101) of the dynamometer (100), characterized in that, The diaphragm connecting shaft disconnecting device further comprises an adapter (1), a fixing member (2), a protective member (3) and a shaft pulling member (4). The adapter (1) is connected to the flywheel (101) through a preset connecting screw hole on the flywheel (101), the top of the fixing member (2) is connected to the adapter (1), the top end of the shaft pulling member (4) is clamped to the bottom end of the fixing member (2), and the bottom end of the shaft pulling member (4) is used for clamping a forceps to the outer wall of the diaphragm connecting shaft (300). The engine mounting frame (400) is connected to a driving mechanism, the driving mechanism is used for driving the engine mounting frame (400) and the aero-engine to move close to or away from the dynamometer (100), and the shaft pulling member (4) is used for abutting against the diaphragm (301) to limit the movement of the diaphragm connecting shaft (300) when the driving mechanism drives the engine mounting frame (400) and the aero-engine (200) to move away from the dynamometer (100), thereby disconnecting the diaphragm connecting shaft (300) from the engine output shaft.

2. A diaphragm coupling shaft disconnect device as described in claim 1, wherein, The diaphragm connecting shaft disconnecting device further comprises a protective member (3), which is connected to the bottom end of the shaft pulling member (4) and is used for clamping the forceps to the outer wall of the diaphragm connecting shaft (300). The protective member (3) is used for abutting against the diaphragm (301) and providing a buffer for the shaft pulling member (4) when the driving mechanism drives the engine mounting frame (400) and the aero-engine to move away from the dynamometer (100).

3. A diaphragm coupling shaft disconnect device as set forth in claim 1 wherein, The fixing member (2) comprises a first mounting portion (21) in a plate shape, the top end of the first mounting portion (21) is connected to the adapter (1), the bottom end of the first mounting portion (21) is provided with a first hook portion (23), a first mounting groove (22) with an open top is formed between the first hook portion (23) and the first mounting portion (21), and the first mounting groove (22) is used for limiting the top end of the shaft pulling member (4).

4. A membrane coupling shaft disconnect device according to claim 3, wherein, The top end of the shaft pulling member (4) is provided with a second hook portion (41), a second mounting groove (42) with an open bottom is formed between the second hook portion (41) and the body of the shaft pulling member (4), the second hook portion (41) is used for being embedded in the first mounting groove (22), and the first hook portion (23) is used for being embedded in the second mounting groove (42), so as to realize the clamping of the shaft pulling member (4) and the fixing member (2).

5. A diaphragm coupling shaft disconnect device as set forth in claim 1 wherein, The bottom end of the shaft pulling member (4) is provided with a third limiting groove (44), the shaft pulling member (4) is used for being clamped to the outer wall of the diaphragm connecting shaft (300) through the third limiting groove (44), the protective member (3) is an arc-shaped plate structure made of a flexible material, a plurality of connecting screw holes are arranged at intervals outside the third limiting groove (44) on the shaft pulling member (4), a plurality of protective member screw holes (32) corresponding to the connecting screw holes are arranged at intervals on the protective member (3), and the protective member (3) is used for being connected to the shaft pulling member (4) through connecting bolts passing through the protective member screw holes (32) and the connecting screw holes in sequence.

6. A membrane coupling shaft disconnect device according to claim 1, wherein, The diaphragm connecting shaft disconnecting device further comprises a connecting shaft bearing mechanism, which comprises a moving trolley (5) and a bearing assembly (6), the bearing assembly (6) is arranged on the moving trolley (5), and the bearing assembly (6) is used for bearing the diaphragm connecting shaft (300) disconnected from the engine output shaft and falling.

7. A membrane coupling shaft disconnect device according to claim 6, wherein, The receiving assembly (6) comprises a first receiving piece (61), a second receiving piece (62), a connecting spring (64) and a buffer spring (66), the first receiving piece (61) and the second receiving piece (62) are both arc-shaped plate structures, the first receiving piece (61) is arranged on the moving trolley (5) through the buffer spring (66), and the second receiving piece (62) is arranged on both sides of the first receiving piece (61) and is connected with the first receiving piece (61) through the connecting spring (64) respectively.

8. A membrane coupling shaft disconnect device according to claim 7, wherein, The receiving assembly (6) further comprises a sliding piece (63), one end of the second receiving piece (62) close to the first receiving piece (61) is provided with a sliding groove, the sliding piece (63) is slidingly arranged in the sliding groove, a first end of the connecting spring (64) is connected with the first receiving piece (61), and a second end of the connecting spring (64) is connected with the sliding piece (63).

9. A membrane coupling shaft disconnect device according to claim 7, wherein, The moving trolley (5) comprises a bottom plate (51), an extension piece (53) and a push rod assembly, a plurality of universal wheels (52) are arranged on the bottom of the bottom plate (51), the push rod assembly is arranged on one side of the bottom plate (51), and the extension piece (53) is arranged on the bottom plate (51) and connected with the buffer spring (66) at the top end.

10. A method of disconnecting a diaphragm coupling shaft using the diaphragm coupling shaft disconnecting apparatus according to any one of claims 1 to 9, characterized by, The diaphragm coupling shaft disconnection method comprises the following steps: S100, the adapter (1) is installed on the flywheel (101) of the dynamometer (100) through the pin shaft; S200, the top end of the fixing piece (2) is connected to the adapter (1) through a bolt; S300, the top end of the shaft pulling piece (4) is clamped to the bottom end of the fixing piece (2), at this time, the shaft pulling piece (4) has a gap with the diaphragm (301) of the diaphragm coupling shaft (300); S400, the connecting screw of the diaphragm coupling shaft (300) and the flywheel (101) of the dynamometer (100) is removed; S500, the engine mounting frame (400) and the aero-engine (200) are driven by the driving mechanism to move away from the dynamometer (100) at a constant speed, and the diaphragm coupling shaft (300) moves synchronously with the aero-engine (200); S600, when the diaphragm (301) of the diaphragm coupling shaft (300) abuts against the shaft pulling piece (4), the diaphragm coupling shaft (300) is limited to move, at this time, the aero-engine (200) continues to move, and the diaphragm coupling shaft (300) is gradually disconnected from the aero-engine (200); S700, when the diaphragm coupling shaft (300) is about to be disconnected from the aero-engine (200), the operator needs to hold the diaphragm coupling shaft (300) with his hand to prevent the diaphragm coupling shaft (300) from falling to the ground at the moment of disconnection.

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