Diaphragm coupling shaft disconnecting device and disconnecting method thereof

Abstract

The invention discloses a diaphragm connecting shaft disconnecting device and a disconnecting method thereof, and belongs to the technical field of aero-engine test run, the diaphragm connecting shaft disconnecting device comprises an adapter, the adapter is used for being connected to a flywheel, the top of a fixing part is connected with the adapter, 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 being clamped and clamped on the outer wall of a diaphragm connecting shaft; the driving mechanism is used for driving the engine mounting rack and the aero-engine to get close to or get away from the dynamometer, and the shaft pulling piece is further used for abutting against the diaphragm to limit movement of the diaphragm connecting shaft when the driving mechanism drives the engine mounting rack and the aero-engine to get away from the dynamometer, so that connection between the diaphragm connecting shaft and the engine output shaft is disconnected. The invention aims to design a novel aero-engine test run diaphragm coupling shaft disconnecting method and a novel aero-engine test run diaphragm coupling shaft disconnecting device, an existing manual shaking drawing mode is replaced, and when the diaphragm coupling shaft and an engine output shaft are disconnected, the diaphragm coupling shaft and the engine output shaft are not damaged; the operation time is shortened and the operation difficulty is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of aircraft engine test run, and in particular, to a diaphragm coupling shaft disconnection device. In addition, the present application also relates to a disconnection method including the diaphragm coupling shaft disconnection device. Background Art

[0002] The information provided in this section is for the purpose of generally presenting the background of the present application. To the extent described in this section, the work of the presently named inventors and aspects of the description that may not constitute prior art at the time of filing are neither explicitly nor implicitly admitted to be prior art to the present application.

[0003] When testing aircraft engines, the engine output shaft needs to be connected to the dynamometer system. Aircraft engines are high-precision, high-power, high-speed, and high-torque devices, and during their testing, parameters such as speed and power need to be frequently switched. The output shaft connection should meet the requirements of precise transmission, high torque transmission, good centering performance, and good dynamic performance.

[0004] In recent years, in the field of aircraft engine testing, diaphragm coupling shafts have been widely used to connect aircraft engines with dynamometer systems. The diaphragm coupling shaft is a high-speed rotating component with high strength and good toughness, and its design and manufacturing costs are high. One end of the diaphragm coupling shaft passes through the front air intake cover of the engine and is matched with the internal engine output shaft through an involute spline. At the same time, a sealing ring is installed to prevent the lubricating oil inside the engine from leaking out and the diaphragm coupling shaft from loosening during testing. The other end of the diaphragm coupling shaft is connected to the high-speed flywheel input shaft in the dynamometer system.

[0005] After the engine is tested, the diaphragm coupling shaft needs to be disconnected from the aircraft engine output shaft. Because the gap between the diaphragm coupling shaft and the output shaft is very small, the previous disconnection method requires multiple operators to cooperate and use manual shaking and pulling to directly disconnect the diaphragm coupling shaft from the engine output shaft, which is difficult to operate.

[0006] This disconnection method has the following problems:

[0007] 1. Cause damage. Artificial shaking and pulling will damage the diaphragm connecting shaft, greatly reducing its service life. The impact caused by artificial shaking and pulling may also damage the engine output shaft, increasing the cost of use;

[0008] 2. Time wasting. It requires the cooperation of multiple operators and requires a lot of test bench downtime, which affects the test efficiency;

[0009] 3. Difficult to operate. It requires the operator to have proficient operating skills, and the disassembly is difficult. It is difficult for operators with insufficient experience to complete, and it is not widely used.

[0010] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

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

[0012] According to one aspect of the present application, a diaphragm coupling shaft disconnecting device is provided, which is used to disassemble a diaphragm coupling shaft connecting the aircraft engine and the dynamometer when the aircraft engine is connected to the dynamometer for test running, wherein a circle of diaphragm is arranged on the diaphragm coupling shaft, wherein the aircraft engine is mounted on a movable engine mounting frame, the first end of the diaphragm coupling shaft is connected to the engine output shaft of the aircraft engine, and the second end of the diaphragm coupling shaft is connected to the output shaft of the flywheel of the dynamometer, and the diaphragm coupling shaft disconnecting device also includes 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 connection screw hole on the flywheel, the top of the fixing piece is connected to the adapter, the top of the shaft pulling piece is clamped with the bottom of the fixing piece, and the bottom of the shaft pulling piece is used to clamp the clamp arranged on the outer wall of the diaphragm connecting shaft;

[0014] The engine mounting frame is connected to a driving mechanism, which is used to drive the engine mounting frame and the aircraft engine toward or away from the dynamometer. The shaft pulling member is also used to abut the diaphragm to limit the movement of the diaphragm connecting shaft when the driving mechanism drives the engine mounting frame and the aircraft engine away from the dynamometer, thereby disconnecting the diaphragm connecting shaft from the engine output shaft.

[0015] In some embodiments of the present application, the diaphragm connecting shaft disconnecting device also includes a protective member connected to the bottom end of the shaft pulling member, the protective member is used for clamping the pliers arranged on the outer wall of the diaphragm connecting shaft, and the protective member is also used to abut the diaphragm and provide buffering for the shaft pulling member when the driving mechanism drives the engine mounting frame and the aircraft engine away from the dynamometer.

[0016] In some embodiments of the present application, the fixing member includes a first mounting portion of 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, and the first hook portion and the first mounting portion enclose a first mounting groove with a top opening, 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, a second hook portion is provided at the top of the shaft pulling member, and a second mounting groove with a bottom opening is formed between the second hook portion and the shaft pulling member 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 between the shaft pulling member and the fixing member.

[0018] In some embodiments of the present application, a third limiting groove is provided at the bottom end of the shaft pulling member, and the shaft pulling member 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 provided on the shaft pulling member at intervals on the outer circle of the third limiting groove. A plurality of protective member screw holes corresponding to the connecting screw holes are provided on the protective member at intervals. The protective member is used to connect the protective member to the shaft pulling member by connecting bolts that pass 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 also includes a connecting bearing connecting mechanism, the connecting bearing connecting mechanism includes a moving trolley and a receiving assembly, the receiving assembly is arranged on the moving trolley, and the receiving assembly is used to receive the diaphragm connecting shaft that is disconnected from the engine output shaft and falls off.

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

[0021] In some embodiments of the present application, the receiving assembly also includes a sliding member, a sliding groove is opened at one end of the second receiving member close to the first receiving member, the sliding member is slidably set in the sliding groove, the first end of the connecting spring is connected to the first receiving member, and the second end of the connecting spring is connected to the sliding member.

[0022] In some embodiments of the present application, the mobile cart includes a base plate, a telescopic member and a push rod assembly. A plurality of universal wheels are arranged at the bottom of the base plate, a push rod assembly is arranged on one side of the base plate, the telescopic member is supported on the base plate, and the top of the telescopic member is connected to a buffer spring.

[0023] According to another aspect of the present application, a diaphragm coupling shaft disconnection method is also provided, which uses the above-mentioned diaphragm coupling shaft disconnection device, and the diaphragm coupling shaft disconnection method comprises the following steps:

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

[0025] S200, connecting the top end of the fixing member to the adapter by means of bolts;

[0026] S300, clamping the top end of the shaft pulling member to the bottom end of the fixing member, and at this time, there is a gap between the shaft pulling member and the diaphragm of the diaphragm connecting shaft;

[0027] S400, remove the connecting screws between the diaphragm connecting shaft and the flywheel of the dynamometer;

[0028] S500, driving the engine mounting frame and the aircraft engine away from the dynamometer at a constant speed through the driving mechanism, and the diaphragm connecting shaft will move synchronously with the aircraft engine;

[0029] S600, when the diaphragm of the diaphragm coupling shaft abuts against the shaft pulling member, the diaphragm coupling shaft is restricted from moving, and the aircraft engine continues to move, and the diaphragm coupling shaft is gradually disconnected from the aircraft engine;

[0030] S700. When the diaphragm coupling shaft is about to be disconnected from the aircraft engine, the operator needs to hold the diaphragm coupling shaft by hand to prevent the diaphragm coupling shaft from falling to the ground at the moment of disconnection.

[0031] This application has the following beneficial effects:

[0032] The present application discloses a diaphragm coupling shaft disconnecting device, which is connected to the flywheel of the dynamometer through an adapter to play the role of installing a base plate, and then connected to the adapter through the top of the fixing part, and then the top of the shaft pulling part is clamped on the fixing part, and the bottom clamp of the shaft pulling part is set on the outer wall of the diaphragm coupling shaft. After that, the engine mounting frame and the aircraft engine can be driven to approach or move away from the dynamometer by a driving mechanism, and when the driving mechanism drives the engine mounting frame and the aircraft engine away from the dynamometer, the shaft pulling part can abut against the diaphragm to limit the movement of the diaphragm coupling shaft, thereby disconnecting the connection between the diaphragm coupling shaft and the engine output shaft, so as to realize the rapid and stable disassembly of the diaphragm coupling shaft and effectively avoid the damage of the diaphragm coupling shaft; and the present application adopts a stable driving aircraft engine for mobile disconnection, so as to avoid the damage to the engine output shaft caused by shaking and pulling impact, and reduce the use cost.

[0033] The diaphragm coupling shaft disconnection method of the present application also has the above-mentioned beneficial effects. It also includes that it does not require the cooperation of multiple operators to shake and pull the aircraft engine, effectively avoiding damage to the engine output shaft and the diaphragm coupling shaft, 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 in shaft engine test benches and has high universality.

[0034] Of course, any product implementing this application does not necessarily need to achieve all the advantages described above at the same time. In addition to the purposes, features and advantages described above, this application also has other purposes, features and advantages. The following will further describe this application in detail with reference to the figures. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0036] Figure 1 It is a schematic diagram of the installation of the diaphragm coupling shaft in the preferred embodiment of the present application;

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

[0038] Figure 3 It is a schematic diagram of the installation of the shaft pulling member of the preferred embodiment of the present application;

[0039] Figure 4 It is a schematic diagram of the installation of the fixing member of the preferred embodiment of the present application;

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

[0041] Figure 6 It is a structural schematic diagram of a fixing member in a preferred embodiment of the present application;

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

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

[0044] Fig. 9 is a schematic front view of a shaft pulling member of a preferred embodiment of the present application;

[0045] Fig.10 is a schematic front view of a protective member of a preferred embodiment of the present application;

[0046] Fig.11 is a side view schematic diagram of a protective member of a preferred embodiment of the present application;

[0047] Fig.12 This is a schematic diagram of the structure of a mobile vehicle in a preferred embodiment of the present application;

[0048] Fig.13 It is a structural schematic diagram of a receiving component of a preferred embodiment of the present application;

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

[0050] The embodiments of the present application are described in detail below in conjunction with the accompanying drawings, but the present application can be implemented in a variety of different ways defined and covered below.

[0051] Figure 1 It is a schematic diagram of the installation of the diaphragm coupling shaft in the preferred embodiment of the present application; Figure 2 is a structural schematic diagram of an engine mounting bracket of a preferred embodiment of the present application; Figure 3 It is a schematic diagram of the installation of the shaft pulling member of the preferred embodiment of the present application; Figure 4 It is a schematic diagram of the installation of the fixing member of the preferred embodiment of the present application; Figure 5 It is a structural schematic diagram of the adapter of the preferred embodiment of the present application; Figure 6 It is a structural schematic diagram of a fixing member in a preferred embodiment of the present application; Figure 7 is a schematic side view of a fixing member of a preferred embodiment of the present application; Figure 8 is a side view schematic diagram of a shaft pulling member of a preferred embodiment of the present application; Fig. 9 is a schematic front view of a shaft pulling member of a preferred embodiment of the present application;

[0052] Fig.10 is a schematic front view of a protective member of a preferred embodiment of the present application; Fig.11 is a side view schematic diagram of a protective member of a preferred embodiment of the present application; Fig.12 This is a schematic diagram of the structure of a mobile vehicle in a preferred embodiment of the present application; Fig.13 It is a structural schematic diagram of the receiving component of the preferred embodiment of the present application.

[0053] A diaphragm coupling shaft disconnecting device is used to disassemble a diaphragm coupling shaft 300 that connects the aircraft engine 200 and the dynamometer 100 when the aircraft 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 aircraft engine 200 is mounted on a movable engine mounting frame 400, the first end of the diaphragm coupling shaft 300 is connected to the engine output shaft of the aircraft engine 200, and the second end of the diaphragm coupling shaft 300 is connected to the output shaft of the flywheel 101 of the dynamometer 100. The diaphragm coupling shaft disconnecting device also includes an adapter 1, a fixing member 2, a protective member 3 and a shaft pulling member 4:

[0054] The adapter 1 is used to be connected to the flywheel 101 through the preset connection screw hole on the flywheel 101, the top of the fixing member 2 is connected to the adapter 1, the top of the shaft pulling member 4 is clamped with the bottom of the fixing member 2, and the bottom of the shaft pulling member 4 is used for clamping the clamp arranged on the outer wall of the diaphragm connecting shaft 300;

[0055] The engine mounting frame 400 is connected to a driving mechanism, which is used to drive the engine mounting frame 400 and the aircraft engine to approach or move away from the dynamometer 100. The shaft pulling member 4 is also used to abut 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 aircraft engine 200 away from the dynamometer 100, thereby disconnecting the diaphragm connecting shaft 300 from the engine output shaft.

[0056] Here, the "adapter 1" means a structure connected to the flywheel 101 of the dynamometer 100. In some embodiments, the adaptor 1 is a plate-like structure, and a plurality of first mounting holes 11 are provided on the adaptor 1 for matching with the preset screw holes on the flywheel 101. A weight-reducing groove 12 is provided at the bottom of the adaptor 1 to reduce the weight of the adaptor 1.

[0057] Here, the “fixing member 2” refers to a structure fixedly installed on the side wall of the adapter 1. In some embodiments, the main body of the fixing member 2 is a plate-like structure.

[0058] In addition, the driving mechanism includes an actuator 402, and a mounting rail 401 is provided at the bottom of the engine mounting frame 400. The actuator 402 is slidably connected to the mounting rail 401. The actuator 402 drives the engine mounting frame 400 and the aircraft engine 200 to move horizontally at a uniform speed through the actuator cylinder. The aircraft engine 200 is mounted on the mounting support plate 403 of the engine mounting frame 400, and the diaphragm connecting shaft 300 passes through the engine front air intake cover 201 of the aircraft engine 200, and cooperates with the engine output shaft inside the aircraft engine 200 through an involute spline.

[0059] The present invention discloses a diaphragm coupling shaft disconnecting device, which is connected to the flywheel 101 of the dynamometer 100 through an adapter 1 to play the role of installing a bottom plate, and then connected to the adapter 1 through the top of the fixing member 2, and then the top of the shaft pulling member 4 is clamped on the fixing member 2, and the bottom clamp of the shaft pulling member 4 is set on the outer wall of the diaphragm coupling shaft 300. After that, the engine mounting frame 400 and the aircraft engine 200 can be driven by a driving mechanism to approach or move away from the dynamometer 100, and when the driving mechanism drives the engine mounting frame 400 and the aircraft engine 200 away from the dynamometer 100, the shaft pulling member 4 can abut against the diaphragm 301 to limit the movement of the diaphragm coupling shaft 300, and then disconnect the connection between the diaphragm coupling shaft 300 and the engine output shaft, so as to realize the rapid and stable disassembly of the diaphragm coupling shaft 300, and effectively avoid the damage of the diaphragm coupling shaft 300; and the present invention adopts a stable driving aircraft engine 200 for mobile disconnection, so as to avoid the damage to the engine output shaft caused by shaking and pulling impact, and reduce the use cost.

[0060] Preferably, please refer to Figure 3 , 4 As shown, the diaphragm connecting shaft disconnecting device also includes a protective member 3, which is connected to the bottom end of the shaft pulling member 4. The protective member 3 is used for clamping the pliers arranged on the outer wall of the diaphragm connecting shaft 300. The protective member 3 is also used to abut the diaphragm 301 and provide buffering for the shaft pulling member 4 when the driving mechanism drives the engine mounting frame 400 and the aircraft engine 200 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, and the bottom end of the shaft pulling member 4 is provided with a third limiting groove 44 for clamping on the outer wall of the diaphragm connecting shaft 300, and the bottom end of the protective member 3 is provided with a second limiting groove 31 matching the processing size of the third limiting groove 44, and the protective member 3 is connected and fixed to the shaft pulling member 4 with screws to prevent loosening and falling off during operation.

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

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

[0064] Preferably, please refer to Figure 3 , 4 As shown in Figures 6, 7, 8 and 9, the fixing member 2 includes a first mounting portion 21 of a plate-like structure, the top end of the first mounting portion 21 is connected to the adapter 1, and a first hook portion 23 is provided at the bottom end of the first mounting portion 21. The first hook portion 23 and the first mounting portion 21 form a first mounting groove 22 with a top opening, and the first mounting groove 22 is used to limit the top end of the shaft pulling member 4.

[0065] Specifically, a second hook portion 41 is provided at the top of the shaft pulling member 4, and a second mounting groove 42 with a bottom opening is formed between the second hook portion 41 and the body of the shaft pulling member 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 between the shaft pulling member 4 and the fixing member 2.

[0066] It is understandable that the bottom end of the fixing member 2 is hook-shaped, and the top end of the shaft pulling member 4 is also hook-shaped, so that the fixing member 2 and the shaft pulling member 4 can be conveniently engaged, which is convenient for the disassembly and assembly of the shaft pulling member 4, and avoids the shaft pulling member 4 being easily subjected to rigid impact due to the fixed connection, resulting in easy impact damage to the shaft pulling member 4. In addition, the non-rigid connection of the shaft pulling member 4 can also avoid direct impact on the diaphragm 301 and the diaphragm connecting shaft 300 when abutting against the diaphragm 301, and the buffering protection of the protective member 3 can reduce the damage of parts during the disassembly process.

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

[0068] Preferably, please refer to Figure 3 , 4 As shown, a third limiting groove 44 is provided at the bottom end of the shaft pulling member 4, and the shaft pulling member 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 spaced apart on the outer circle of the third limiting groove 44 on the shaft pulling member 4, and a plurality of protective member screw holes 32 corresponding to the connecting screw holes are spaced apart on the protective member 3. The protective member 3 is used to connect the protective member 3 with the shaft pulling member 4 by connecting bolts that pass through the protective member screw holes 32 and the connecting screw holes in sequence.

[0069] It is understandable that the protective member 3 can be conveniently installed on the side wall of the shaft puller 4 by connecting bolts, and the protective member 3 made of flexible material can protect both the shaft puller 4 and the diaphragm 301. Since the protective member 3 is detachable, it is convenient for subsequent replacement to ensure the protective effect.

[0070] Preferably, please refer to Fig.12 and 13 As shown, the diaphragm coupling shaft disconnecting device also includes a coupling shaft connecting mechanism, which includes a moving trolley 5 and a receiving assembly 6. The receiving assembly 6 is arranged on the moving trolley 5, and the receiving assembly 6 is used to receive the diaphragm coupling shaft 300 that is disconnected from the engine output shaft and falls off.

[0071] It is understandable that during the process of disassembling the diaphragm coupling shaft 300, when the diaphragm coupling shaft 300 is about to be disconnected from the aircraft engine 200, the operator is usually required 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. However, this process is unstable and requires additional manpower, resulting in limited operating space. Therefore, by directly receiving the dropped diaphragm coupling shaft 300 during the disassembly process by the receiving component 6, the efficiency of the operation can be further improved and the safety of the personnel can be ensured.

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

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

[0074] Preferably, please refer to Fig.13 As shown, the receiving assembly 6 also includes a sliding member 63, a sliding groove is opened at one end of the second receiving member 62 close to the first receiving member 61, the sliding member 63 is slidably set in the sliding groove, the first end of the connecting spring 64 is connected to the first receiving member 61, and the second end of the connecting spring 64 is connected to the sliding member 63.

[0075] It can be understood that the sliding member 63 can expand the installation distance of the second supporting member 62, thereby expanding the supporting area of ​​the supporting assembly 6, which is more conducive to smoothly holding the diaphragm connecting shaft 300; at the same time, the sliding member 63 can also enhance the buffering effect of the second supporting member 62, especially the sliding member 63 made of a plate-like structure made of soft material, which can effectively improve the shock-absorbing effect of the second supporting member 62.

[0076] It should be noted that a limiting screw hole is provided at the bottom of the second receiving member 62 , and a second locking member 65 is arranged in the limiting screw hole. The second locking member 65 is used to tighten the sliding member 63 to achieve locking and limiting of the sliding member 63 , which can facilitate the adjustment of the position of the sliding member 63 .

[0077] Preferably, please refer to Fig.12 As shown, the mobile trolley 5 includes a base plate 51, a telescopic member 53 and a push rod assembly. A plurality of universal wheels 52 are provided at the bottom of the base plate 51, a push rod assembly is provided on one side of the base plate 51, the telescopic member 53 is supported on the base plate 51, and the top of the telescopic member 53 is connected to the buffer spring 66.

[0078] It can be understood that the push rod assembly can facilitate the operator to push the mobile cart 5 and the receiving assembly 6 to move as a whole so as to adjust the position of the receiving assembly 6, and the telescopic member 53 can drive the receiving assembly 6 to adjust the height, thereby adapting to the receiving requirements of the diaphragm connecting shaft 300 of different heights in different venues, so as to improve the adaptability of the receiving function.

[0079] Specifically, the telescopic member 53 includes a fixed column 531, a telescopic column 532 and a first locking member 533. The fixed column 531 is supported on the base plate 51, and the telescopic column 532 is slidably set in the center hole of the fixed column 531. The first locking member 533 is used to pass through the side wall of the center hole to tighten the telescopic column 532, thereby locking the telescopic column 532 to different heights. The top of the telescopic column 532 is connected to the buffer spring 66.

[0080] The push rod assembly includes two push rods 54 that are spaced apart, and a handle 55 is provided between the two push rods 54 , so that an operator can hold the handle 55 to push the moving trolley 5 to move as a whole.

[0081] In addition, a diaphragm coupling shaft disconnection method is also provided, which uses the above-mentioned diaphragm coupling shaft disconnection device, and the diaphragm coupling shaft disconnection method includes the following steps:

[0082] S100, installing the adapter 1 on the flywheel 101 of the dynamometer 100 through a pin;

[0083] S200, connecting the top end of the fixing member 2 to the adapter 1 by means of bolts;

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

[0085] S400, removing the connecting screws between the diaphragm connecting shaft 300 and the flywheel 101 of the dynamometer 100;

[0086] S500, driving the engine mounting frame 400 and the aircraft engine 200 to move away from the dynamometer 100 at a constant speed through the driving mechanism, and the diaphragm connecting shaft 300 will move 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, and 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 in 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 later maintenance is simple. It can be extended to the use of engine test benches with similar structures, and can also be extended to the use of related test equipment, and is used in occasions such as shafts, discs, gears, etc. that 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 other elements not explicitly listed, or also includes elements 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 its 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 and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, 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 the protection of this application.

Claims

1. A diaphragm coupling shaft disconnecting device, used for disassembling a diaphragm coupling shaft (300) for connecting an aircraft engine (200) and a dynamometer (100) when the aircraft engine (200) is connected to a dynamometer (100) for test running, wherein a circle of diaphragm (301) is arranged on the diaphragm coupling shaft (300), wherein the aircraft engine (200) is mounted 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 aircraft 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 coupling shaft disconnecting device also includes a switching component (1), a fixing component (2), a protective component (3) and a shaft pulling component (4): The adapter (1) is used to be connected to the flywheel (101) through a connection screw hole preset on the flywheel (101), the top of the fixing member (2) is connected to the adapter (1), the top of the shaft pulling member (4) is clamped with the bottom of the fixing member (2), and the bottom of the shaft pulling member (4) is used to clamp the clamp disposed on the outer wall of the diaphragm connecting shaft (300); The engine mounting frame (400) is connected to a driving mechanism, and the driving mechanism is used to drive the engine mounting frame (400) and the aircraft engine to approach or move away from the dynamometer (100). The shaft pulling member (4) is also used to abut 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 aircraft 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 disconnection device according to claim 1, characterized in that: The diaphragm coupling shaft disconnecting device further comprises a protective member (3), the protective member (3) being connected to the bottom end of the shaft pulling member (4), the protective member (3) being used for clamping a clamp arranged on the outer wall of the diaphragm coupling shaft (300), and the protective member (3) being further used for abutting against the diaphragm (301) and providing buffering for the shaft pulling member (4) when the driving mechanism drives the engine mounting frame (400) and the aircraft engine away from the dynamometer (100).

3. A diaphragm coupling shaft disconnection device according to claim 1, characterized in that: The fixing member (2) comprises a first mounting portion (21) of a plate-like structure, 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), the first hook portion (23) and the first mounting portion (21) enclose a first mounting groove (22) with a top opening, and the first mounting groove (22) is used to limit the top end of the shaft pulling member (4).

4. A diaphragm coupling shaft disconnection device according to claim 1 or 3, characterized in that: A second hook portion (41) is provided at the top end of the shaft pulling member (4), and a second mounting groove (42) with a bottom opening is formed between the second hook portion (41) and the body of the shaft pulling member (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 between the shaft pulling member (4) and the fixing member (2).

5. A diaphragm coupling shaft disconnection device according to claim 1, characterized in that: A third limiting groove (44) is provided at the bottom end of the shaft pulling member (4). The shaft pulling member (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 a flexible material. A plurality of connecting screw holes are provided at intervals on the shaft pulling member (4) and located on the outer circle of the third limiting groove (44). A plurality of protective member screw holes (32) corresponding to the connecting screw holes are provided at intervals on the protective member (3). The protective member (3) is used to connect the protective member (3) and the shaft pulling member (4) by connecting bolts that pass through the protective member screw holes (32) and the connecting screw holes in sequence.

6. A diaphragm coupling shaft disconnection device according to claim 1, characterized in that: The diaphragm coupling shaft disconnecting device also includes a coupling shaft connecting mechanism, which includes a moving trolley (5) and a receiving assembly (6). The receiving assembly (6) is arranged on the moving trolley (5), and is used to receive the diaphragm coupling shaft (300) that is disconnected from the engine output shaft and falls off.

7. A diaphragm coupling shaft disconnection device according to claim 6, characterized in that: The receiving assembly (6) comprises a first receiving member (61), a second receiving member (62), a connecting spring (64) and a buffer spring (66); the first receiving member (61) and the second receiving member (62) are both arc-shaped plate structures; the first receiving member (61) is arranged on the moving trolley (5) via the buffer spring (66); the second receiving member (62) is arranged on both sides of the first receiving member (61) and is connected to the first receiving member (61) via the connecting spring (64) respectively.

8. A diaphragm coupling shaft disconnection device according to claim 7, characterized in that: The receiving assembly (6) further comprises a sliding member (63), a sliding groove is provided at one end of the second receiving member (62) close to the first receiving member (61), the sliding member (63) is slidably arranged in the sliding groove, the first end of the connecting spring (64) is connected to the first receiving member (61), and the second end of the connecting spring (64) is connected to the sliding member (63).

9. A diaphragm coupling shaft disconnection device according to claim 7, characterized in that: The mobile trolley (5) comprises a bottom plate (51), a telescopic member (53) and a push rod assembly. A plurality of universal wheels (52) are arranged at the bottom of the bottom plate (51), a push rod assembly is arranged on one side of the bottom plate (51), the telescopic member (53) is supported on the bottom plate (51), and the top end of the telescopic member (53) is connected to a buffer spring (66).

10. A method for disconnecting a diaphragm coupling shaft, using the diaphragm coupling shaft disconnecting device according to any one of claims 1 to 9, characterized in that: The diaphragm coupling shaft disconnection method comprises the following steps: S100, installing the adapter (1) on the flywheel (101) of the dynamometer (100) via a pin; S200, connecting the top end of the fixing member (2) to the adapter (1) by means of bolts; S300, clamping the top end of the shaft pulling member (4) to the bottom end of the fixing member (2), at which time there is a gap between the shaft pulling member (4) and the diaphragm (301) of the diaphragm connecting shaft (300); S400, removing the connecting screws between the diaphragm connecting shaft (300) and the flywheel (101) of the dynamometer (100); S500, driving the engine mounting frame (400) and the aircraft engine (200) to move away from the dynamometer (100) at a constant speed through a driving mechanism, and the diaphragm connecting shaft (300) will move synchronously with the aircraft engine (200); S600, when the diaphragm (301) of the diaphragm connecting shaft (300) abuts against the shaft pulling member (4), the movement of the diaphragm connecting shaft (300) is restricted, and at this time, the aircraft engine (200) continues to move, and the diaphragm connecting shaft (300) is gradually disconnected from the aircraft engine (200); S700: When the diaphragm connecting shaft (300) is about to be disconnected from the aircraft engine (200), the operator needs to hold the diaphragm connecting shaft (300) by hand to prevent the diaphragm connecting shaft (300) from falling to the ground at the moment of disconnection.

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