Tester of high-speed gear coupling

Abstract

The invention discloses a tester for a high-speed gear coupling, and relates to the field of test equipment. The invention aims to solve the problem of vacancy of a high-speed gear coupling in the field of comprehensive tests. The device comprises a driving end and a loading end, and each of the driving end and the loading end comprises a motor, a coupler, a gearbox and a reducing sleeve; an output shaft of the motor is connected with an input shaft of the gear box through the coupler, and the adapter sleeve is connected to the output shaft of the gear box in a sleeving mode. The reducing sleeve of the driving end and the reducing sleeve of the loading end are used for being matched with the two ends of the tested high-speed gear coupling and driving the tested high-speed gear coupling to conduct testing actions, and the reducing sleeve of the loading end is provided with a torque measuring instrument which is used for collecting torque applied by the loading end to the tested high-speed gear coupling.

Description

Technical Field

[0001] The invention belongs to the field of testing equipment, and in particular relates to testing equipment for a high-speed gear coupling. Background Art

[0002] With the maturity and progress of industrial technology, the requirements for product quality in some fields are constantly increasing. The necessary processes from product design to delivery include design calculation, simulation analysis and test verification. During the test verification, the test equipment simulates the actual working conditions of the test piece to simulate the temperature, lubricating oil, torque, force and other aspects. The system composed of all simulation equipment is called the tester of this test piece. At present, aerospace, aviation, weapons, vehicles and other systems that require high quality and complex systems often use testers to conduct factory tests or experimental verifications on related components. Existing testers are mostly used to test and simulate the main test parts, such as testing engines and accessory casings in the aviation field.

[0003] Gear couplings are mechanical devices used to connect different parts in engines. Their main function is to transmit torque and compensate for misalignment between shaft systems of different equipment. They are usually used between turbines and other accessory casings or fans. Their structure is as follows: Figure 1 At the same time, due to the structural characteristics of the gear coupling, it has excellent performances such as vibration reduction, easy disassembly and high reliability.

[0004] Aircraft engines are composed of multiple components and equipment, and the power connection between different components is achieved through couplings. When working, some of its components need to withstand a temperature difference of up to 400°C. At the same time, the speed requirements for each device are also high, which puts high demands on the performance of each component. When the equipment is running, the structure deforms due to temperature, force and other reasons. In this case, if the high-speed transmission shaft system is required to have a stable working state, the coupling between the equipment needs to have corresponding mechanical properties and be equipped with a certain amount of lubricating oil to reduce wear and heat between the teeth to meet the influence of factors such as temperature and equipment deformation.

[0005] In the early stage of high-speed gear coupling design and when it is manufactured, a simulation system is required to test and simulate the actual working conditions of the gear coupling to verify that the gear coupling meets the design and actual use requirements. The test process needs to fully simulate parameters such as lubricating oil, misalignment, speed, torque, etc., so a corresponding tester is needed to solve the gap in the field of comprehensive testing of high-speed gear couplings. Summary of the invention

[0006] The present invention aims to solve the problem of the lack of high-speed gear coupling in the field of comprehensive testing, and now provides a tester for high-speed gear coupling.

[0007] A tester for a high-speed gear coupling comprises: a driving end and a loading end which are arranged in a mirror image;

[0008] The driving end and the loading end both include a motor, a coupling, a gear box and an adapter sleeve;

[0009] The output shaft of the motor is connected to the input shaft of the gear box through the coupling, and the adapter sleeve is sleeved on the output shaft of the gear box;

[0010] The adapter sleeves at the driving end and the loading end are used to adapt to the two ends of the tested high-speed gear coupling and drive it to perform the test action. The adapter sleeve at the loading end is provided with a torque meter, which is used to collect the torque applied by the loading end to the tested high-speed gear coupling.

[0011] Furthermore, the above-mentioned high-speed gear coupling tester further includes: a driving end base 10 and a loading end base 13;

[0012] The driving end and the loading end are fixed on the driving end base 10 and the loading end base 13 respectively;

[0013] The driving end base 10 can drive the driving end to move along the radial direction of the tester.

[0014] Furthermore, the above-mentioned high-speed gear coupling tester further includes: an adapter base 11 and a length adaptation bracket 12;

[0015] The adapter base 11 is located between the driving end base 10 and the loading end base 13 , and the length adaptor bracket 12 is fixed on the upper surface of the adapter base 11 and is used to support the tested high-speed gear coupling.

[0016] Furthermore, the driving end base 10 comprises: a T-slot mounting plate 101, a driving device 102, a guide rail slider 103, a brake caliper 104, a grating ruler 105 and a bottom plate;

[0017] The bottom plate is provided with a slide rail, the guide rail slider 103 is embedded in the slide rail, the T-slot mounting plate 101 is fixed on the guide rail slider 103, and the driving device 102 is used to drive the guide rail slider 103 to drive the T-slot mounting plate 101 to move along the slide rail;

[0018] The brake caliper 104 is located at the end of the slide rail and is used to apply a braking function to the movement of the guide rail slider 103;

[0019] The grating ruler 105 is used to measure the moving distance of the T-slot mounting plate 101 .

[0020] Furthermore, the gearbox at the driving end includes a gearbox body 31 and an oil injection pipe 32;

[0021] The oil injection pipe 32 is coaxially nested and connected to the gear box body 31 .

[0022] Furthermore, the above-mentioned adapter sleeve of the driving end includes: an adapter sleeve body 41, a gear flange 42, a gear box coupling 43 and a stiffness adjustable flange 44;

[0023] The gearbox coupling 43 is a hollow structure and is coaxially connected to the oil injection pipe 32;

[0024] The gearbox coupling 43 is coaxially nested with the adapter sleeve body 41, the gear flange 42 and the stiffness adjustable flange 44 are respectively fixed at both ends of the adapter sleeve body 41, the stiffness adjustable flange 44 is connected to the gearbox body 31, and the gear flange 42 is used to be connected to the tested high-speed gear coupling.

[0025] Furthermore, the above-mentioned adjustable stiffness flange 44 is a squirrel cage structure.

[0026] Furthermore, the above-mentioned high-speed gear coupling tester further includes a video monitoring system for photographing the appearance and working status of the tester.

[0027] Furthermore, the above-mentioned high-speed gear coupling tester further includes a vibration test system for monitoring the vibration state of the rotating parts of the tester.

[0028] Furthermore, the coupling at the loading end is an over-torque protection coupling.

[0029] The present invention provides a comprehensive tester for a high-speed gear coupling, which solves the problem of a blank in the field of simulation tests for the lubricating oil supply mode, input and output eccentricity, rotation speed, and torque parameters of the high-speed gear coupling. The present invention can perform fatigue and life tests on the high-speed gear coupling by monitoring the test piece with sensors in the tester. The parameters such as the oil supply mode, input and output eccentricity, rotation speed, and torque in the tester can fully simulate the actual working conditions of the test piece, and the length adapter can realize efficient disassembly and assembly of test pieces of different models, effectively improving the efficiency of continuous tests of gear couplings of different lengths. The tester system adopts an electric power closed loading method, which effectively reduces energy consumption. The stiffness-adjustable adapter sleeve structure in the present invention can meet the requirements of simulating the stiffness of the shaft heads of high-speed gear couplings of different models, and at the same time, the present invention realizes the function of real-time adjustment of the eccentricity of the two shaft heads of the high-speed gear coupling through a simple mechanical structure. The present invention also proposes a cantilever oil supply pipe, so that the tester can provide high and low temperature lubricating oil temperature simulation capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of a high-speed gear coupling;

[0031] Figure 2 It is a schematic diagram of the structure of a tester for a high-speed gear coupling;

[0032] Figure 3 It is a schematic diagram of the test method of high-speed gear couplings with different lengths;

[0033] Figure 4 This is a schematic diagram of the drive end base;

[0034] Figure 5 It is a schematic diagram of the structure of the adapter sleeve and the gear box;

[0035] Figure 6 This is the model diagram of the fuel injection pipe;

[0036] Figure 7 This is the model diagram of the flange with adjustable stiffness;

[0037] Figure 8 Schematic diagram of the structure of the gear flange adapted to the test piece, where a and b represent two different viewing angles;

[0038] Fig. 9 It is the vibration shape diagram of different orders of the fuel injection pipe;

[0039] Fig.10 Schematic diagram of static analysis of the fuel injection pipe. DETAILED DESCRIPTION

[0040] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0041] Reference Figures 1 to 10 Specifically describing this embodiment, a high-speed gear coupling tester described in this embodiment includes: a driving end and a loading end arranged in a mirror image; the driving end includes: a driving motor 1, a driving end coupling 2, a driving gear box 3 and a driving end adapter sleeve 4; the loading end includes: a loading motor 9, a loading end coupling 8, a loading gear box 7 and a loading end adapter sleeve 6.

[0042] The driving end coupling 2 is used for the shaft connection between the driving motor 1 and the driving gearbox 3, and the driving end adapter sleeve 4 and the loading end adapter sleeve 6 are used to adapt the two end interfaces, lubricating oil supply mode and stiffness of the tested high-speed gear coupling 5. The loading end coupling 8 is used to connect the shaft connection between the loading gearbox 7 and the loading motor 9. The loading end adapter sleeve 6 is provided with a torque meter, which is used to collect the torque applied by the loading end to the tested high-speed gear coupling 5. The loading end coupling 8 is an over-torque protection coupling, and the structure for realizing over-torque protection is not limited to the squeeze ball type, hydraulic type, shear pin type, etc.

[0043] Preferably, a tester for a high-speed gear coupling is also designed with: a driving end base 10, an adapter base 11, a length adaptation bracket 12 and a loading end base 13, wherein the driving end and the loading end are respectively fixed on the driving end base 10 and the loading end base 13, and the driving end base 10 can drive the driving end to move along the radial direction of the tester to meet the centering requirements of the shaft system of the high-speed gear coupling 5, and the control of the stroke and accuracy is achieved by a grating ruler. The adapter base 11 is located between the driving end base 10 and the loading end base 13, and the length adaptation bracket 12 is fixed on the upper surface of the adapter base 11 and is used to support the tested high-speed gear coupling. The adapter base 11 can be used as an adapter seat adapted to high-speed gear couplings of different lengths, and it can dynamically adjust the radial position and statically adjust the axial position. The length adaptation bracket 12 enables the tester to adapt to high-speed gear couplings of different lengths. In actual application, an additional loading end adapter sleeve 6 is installed at the interface of the length adaptation bracket 12, and the two loading end adapter sleeves 6 are connected by a coupling, so that the purpose of testing high-speed gear couplings of different lengths can be achieved without adjusting the gear box and other equipment that is not easy to move, which greatly improves the efficiency of testing high-speed gear couplings of different lengths. The loading end base 13 is used as a fixing part to install the loading gear box 7 and the loading motor 9 to adapt to the shaft system height of the entire system.

[0044] Specifically, the drive end base 10 is similar to the adapter base 11 in structure and function, and the difference lies in the size. The drive end base 10 is now taken as an example for description. The drive end base 10 includes: a T-slot mounting plate 101, a drive device 102, a guide rail slider 103, a brake caliper 104, a grating ruler 105 and a base plate. A slide rail is provided on the base plate, and the guide rail slider 103 is embedded in the slide rail. The T-slot mounting plate 101 is fixed on the guide rail slider 103. The drive device 102 is used to drive the guide rail slider 103 to drive the T-slot mounting plate 101 to move along the slide rail. The brake caliper 104 is located at the end of the slide rail and is used to apply a braking function to the movement of the guide rail slider 103. The grating ruler 105 is used to measure the distance moved by the T-slot mounting plate 101. The mounting plate 101, the guide rail slider 103 and the brake caliper 104 must all have sufficient rigidity to ensure the mechanical properties of the upper equipment; the grating scale 105 is used to ensure the accuracy of movement; the driving device 102 is composed of a manual wheel and a worm gear to provide power for the entire device.

[0045] Preferably, the gearbox at the driving end includes a gearbox body 31 and an oil injection pipe 32; the oil injection pipe 32 is coaxially nested with the gearbox body 31, and the two devices are connected by bolts. The gearbox body 31 is used to transmit torque and adjust the speed, and the oil injection pipe 32 is used to simulate the lubrication state of the tooth end of the high-speed gear coupling 5 under test.

[0046] Because the test piece is a rotating part, and there must be equipment at both ends to apply speed and torque, the test piece needs to be supplied with lubricating oil with the help of equipment at both ends. Since some models of test pieces require lubricating oil temperature simulation, if the lubricating oil is supplied to the test piece through equipment at both ends, the simulation of lubricating oil temperature will affect the service life of the equipment at both ends of the test piece. Therefore, the injection pipe 32 is a cantilever structure, and its structure must meet the need to avoid the working speed range in terms of mode, and must meet the need to not interfere with other equipment after natural gravity bending in terms of mechanical deformation. The injection pipe 32 has structural features such as mounting flanges, through holes and oil pipes. The injection pipe is connected to structures such as the gearbox housing through mounting flanges and through hole structures. The injection pipe is a long cantilever structure. It should be noted that its own mode is not close to the rotation frequency of the shaft system, and it is necessary to avoid interference with other equipment after the oil pipe is deformed. Simulation calculations were performed based on this patent case, and the modal calculation results are shown in Table 1.

[0047] Table 1 Modal analysis results

[0048] Order 1 2 3 4 5 Natural frequency / (Hz) 36.08 36.09 225.51 225.56 628.64

[0049] Then a static analysis was performed on the simulation part, where the maximum deflection was 0.3 mm away from the support side.

[0050] Preferably, the drive end adapter sleeve 4 and the loading end adapter sleeve 6 have similar structures, the difference is that the gear flange 42 needs to be changed according to the specific structure of the tested high-speed gear coupling 5, and the similar structural features are that both have an oil injection structure and a stiffness adjustment structure. The relationship between the two adapter sleeves and their respective gear boxes is described by taking the drive gear box 3 and the drive end adapter sleeve 4 as an example. The drive end adapter sleeve 4 includes: an adapter sleeve body 41, a gear flange 42, a gear box coupling 43 and a stiffness adjustable flange 44. The gear box coupling 43 is a hollow structure and is coaxially connected to the oil injection pipe 32; the gear box coupling 43 is coaxially nested with the adapter sleeve body 41, the gear flange 42 and the stiffness adjustable flange 44 are respectively fixed at both ends of the adapter sleeve body 41, the stiffness adjustable flange 44 is connected to the gear box body 31, and the gear flange 42 is used to be connected to the tested high-speed gear coupling. The adapter sleeve body 41 and the gearbox coupling 43 are used to transmit torque and speed; the test piece matching toothed flange 42 is used to connect the adapter sleeve body 41 and the high-speed toothed coupling 5. If a different type of high-speed toothed coupling 5 is replaced, it is only necessary to change the gear interface between the test piece matching toothed flange 42 and the test piece to complete the replacement test of different types. The stiffness adjustable flange 44 is used to connect the drive gearbox 3 and the adapter sleeve body 41. By adjusting its own structure, the stiffness of the test piece matching toothed flange 42 can be adjusted.

[0051] The adjustable stiffness flange 44 is a squirrel cage structure, which can effectively adjust the stiffness required by the high-speed gear coupling 5-axis head, and the stiffness range is 5×107~5×108N / m. The structural features of the adjustable stiffness flange 44 mainly include external mounting flange, through hole, adapter sleeve mounting flange, threaded hole and squirrel cage. The external mounting flange is used to connect with the gear box, bracket and other components, and is fixed by bolts through the through hole on it; the adapter sleeve mounting flange is used to install the adapter sleeve body, and is connected by bolts through the threaded hole; the squirrel cage structure is a key structure for adjusting stiffness, and the stiffness value is shown in Table 2.

[0052] Table 2 Stiffness values

[0053] Load / (kN) 10 10 10 Average displacement(mm) 0.126 0.034 0.032 Stiffness / N / m <![CDATA[7.9×10 7 ]]> <![CDATA[2.9×10 8 ]]> <![CDATA[3.1×10 8 ]]>

[0054] The gear flange 42 has structural features such as mounting stoppers, tapped holes, mounting flanges and test piece interfaces. The mounting stoppers, mounting flanges and tapped holes together ensure the mounting accuracy with the adapter sleeve body. The tapped holes are used in conjunction with tapped hole bolts. When processing the tapped holes and tapped hole bolts, it is necessary to ensure a small clearance fit between the shaft and the hole. The test piece interface structure is different according to the different interfaces of different high-speed gear couplings.

[0055] Preferably, the high-speed gear coupling tester described in this embodiment further includes a video monitoring system for photographing the appearance and working status of the tester; and a vibration testing system for monitoring the vibration status of the rotating parts of the tester.

[0056] In summary, this embodiment is equipped with an automated control and data acquisition system, a vibration acquisition system, a drive and variable frequency speed regulation system, a loading system, a mechanical system, a lubrication and cooling system, and a video monitoring system. The combined effect of multiple systems realizes the simulation test of the high-speed gear coupling. The drive and variable frequency speed regulation system includes a motor and a variable frequency speed regulation cabinet. The loading system is also realized by a motor. The two motors and the power grid system can realize the electric power closure and achieve the effect of energy saving and emission reduction. The video monitoring system is the main equipment for monitoring the appearance of the tester, which is used to assist in judging the working status of the tester in real time. The vibration test system is used to monitor the vibration of the important rotating parts of the tester, and is also used to assist in judging whether the tester is in a normal working state. The lubrication and cooling system is used to provide a certain amount of lubricating oil to the high-speed gear coupling. The lubricating oil brand, flow, pressure and temperature all simulate the actual working conditions of the high-speed gear coupling. The automated control and data acquisition system is used to process the signals of the tester and can issue control instructions. The mechanical system is the key technology of the present invention, which describes the speed and torque loading method, the eccentricity implementation method, the spline connection stiffness simulation implementation method, the lubricating oil supply to the specified position implementation method, etc. This embodiment solves the simulation test of the lubricating oil, eccentricity, speed, and torque parameters of the high-speed gear coupling.

[0057] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that the features described in conjunction with a single embodiment may be used in other described embodiments.

Claims

1. A high-speed gear coupling tester, characterized in that: include: The driver and loader of the image setting; The driving end and the loading end both include a motor, a coupling, a gear box and an adapter sleeve; The output shaft of the motor is connected to the input shaft of the gear box through the coupling, and the adapter sleeve is sleeved on the output shaft of the gear box; The adapter sleeves at the driving end and the loading end are used to adapt to the two ends of the tested high-speed gear coupling and drive it to perform the test action. The adapter sleeve at the loading end is provided with a torque meter, which is used to collect the torque applied by the loading end to the tested high-speed gear coupling.

2. A high-speed gear coupling tester according to claim 1, characterized in that: It also includes: a driving end base (10) and a loading end base (13); The driving end and the loading end are fixed on the driving end base (10) and the loading end base (13) respectively; The driving end base (10) can drive the driving end to move along the radial direction of the tester.

3. A high-speed gear coupling tester according to claim 2, characterized in that: Also includes: Transfer A base (11) and a length adaptation bracket (12); The adapter base (11) is located between the driving end base (10) and the loading end base (13); the length adaptation bracket (12) is fixed on the upper surface of the adapter base (11) and is used to support the tested high-speed gear coupling.

4. A high-speed gear coupling tester according to claim 2, characterized in that: The driving end base (10) comprises: a T-slot mounting plate (101), a driving device (102), a guide rail slider (103), a brake caliper (104), a grating ruler (105) and a bottom plate; The bottom plate is provided with a slide rail, the guide rail slider (103) is embedded in the slide rail, the T-slot mounting plate (101) is fixed on the guide rail slider (103), and the driving device (102) is used to drive the guide rail slider (103) to drive the T-slot mounting plate (101) to move along the slide rail; The brake caliper (104) is located at the end of the slide rail and is used to apply a braking function to the movement of the guide rail slider (103); The grating ruler (105) is used to measure the distance moved by the T-slot mounting plate (101).

5. A high-speed gear coupling tester according to claim 1, 2, 3 or 4, characterized in that: The gearbox at the driving end comprises a gearbox body (31) and an oil injection pipe (32); The oil injection pipe (32) is coaxially nested and connected to the gear box body (31).

6. A high-speed gear coupling tester according to claim 5, characterized in that: The adapter sleeve at the driving end comprises: an adapter sleeve body (41), a gear flange (42), a gear box coupling (43) and a stiffness-adjustable flange (44); The gear box coupling (43) is a hollow structure and is coaxially connected to the oil injection pipe (32); The gearbox coupling (43) is coaxially nested with the adapter sleeve body (41), the gear flange (42) and the stiffness-adjustable flange (44) are respectively fixed at two ends of the adapter sleeve body (41), the stiffness-adjustable flange (44) is connected to the gearbox body (31), and the gear flange (42) is used to be connected to the tested high-speed gear coupling.

7. A high-speed gear coupling tester according to claim 6, characterized in that: The rigidity adjustable flange (44) is a squirrel cage structure.

8. A high-speed gear coupling tester according to claim 1, 2, 3, 4, 6 or 7, characterized in that: It also includes a video monitoring system for photographing the appearance and working status of the tester.

9. A high-speed gear coupling tester according to claim 8, characterized in that: It also includes a vibration test system for monitoring the vibration state of the rotating parts of the tester.

10. A high-speed gear coupling tester according to claim 9, characterized in that: The coupling at the loading end is an over-torque protection coupling.

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