Aviation oil pump high-speed gearbox loading test system

Abstract

The invention provides a loading test system for a high-speed gear box of an aviation oil pump, which relates to the technical field of gear box detection and comprises a main driving device and two sets of output loading devices, the main driving device comprises a loading driving motor, a speed increasing driving accompanying test box and a flange connecting structure, an output shaft of the loading driving motor is connected with an input shaft of the speed increasing driving accompanying test box, and an output shaft of the speed increasing driving accompanying test box is used for being connected with an input shaft of a gearbox to be tested; and the two sets of output loading devices are respectively used for being connected with two output shafts of the gearbox to be tested. The flange connection structure is installed on the speed increasing driving accompanying test box and is used for being fixedly connected with a gearbox to be tested. The test system and the to-be-tested gearbox are low in assembly difficulty and high in assembly efficiency, the test system is used for carrying out a loading test on the gearbox, related parameters of the gearbox can be accurately obtained, the performance of the gearbox can be mastered conveniently, and subsequent debugging and use of the gearbox are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of gearbox detection, and in particular to a loading test system for a high-speed gearbox of an aviation oil pump. Background Art

[0002] Gas turbine equipment is widely used in the fields of navigation and aviation. There are multiple auxiliary systems on the gas turbine that need to be driven by the gas generator rotor, such as lubricating oil pump, return oil pump, hydraulic pump servo valve, etc. Other auxiliary systems are used to drive the gas turbine rotor to rotate, such as starter, cranking device, etc. In order to realize the transmission between the gas turbine rotor and these auxiliary systems, a special transmission device needs to be set up. The transmission device is also called a gearbox assembly. The quality and performance of the gearbox assembly directly affect people's lives and property. During the operation of the gas turbine, if the gearbox assembly fails, the gas turbine needs to be removed from the box as a whole to prevent maintenance in the maintenance plant, resulting in high maintenance costs and long maintenance cycles. Testing is an indispensable part of the research on gearbox assemblies. The ability to implement loading tests can better verify the performance parameters of the gearbox assembly, including the temperature rise, vibration, efficiency and life of the whole machine. In order to fully verify the performance of the gearbox assembly, it is necessary to carry out loading performance tests and life tests, and this experimental plan is specially proposed.

[0003] The inventors found in their research that the prior art did not design a loading test system for the aviation fuel pump high-speed gearbox, and was unable to effectively obtain the various performances of the aviation fuel pump high-speed gearbox. Summary of the invention

[0004] The objects of the present invention include, for example, providing an aviation oil pump high-speed gearbox loading test system, which can accurately obtain gearbox related parameters, facilitate gearbox improvement and improve the safety and reliability of gearbox service.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the present invention provides an aviation oil pump high-speed gearbox loading test system, comprising:

[0007] A main drive device and two sets of output loading devices; the main drive device includes a loading drive motor, a speed-increasing drive test box and a flange connection structure, the output shaft of the loading drive motor is connected to the input shaft of the speed-increasing drive test box, and the output shaft of the speed-increasing drive test box is used to connect to the input shaft of the gear box to be tested; the two sets of output loading devices are respectively used to connect to the two output shafts of the gear box to be tested;

[0008] The flange connection structure is installed on the speed increasing drive test box, and the flange connection structure is used for fixed connection with the gear box to be tested.

[0009] In an optional embodiment, the flange connection structure is coaxially arranged with the output shaft of the speed-increasing driving test box, and the output shaft of the speed-increasing driving test box is located in the area surrounded by the flange connection structure.

[0010] Based on the above scheme, the position of the flange connection structure can be designed with reference to the position of the output shaft, thereby improving the accuracy of the position of the flange connection structure. Due to the high accuracy of the position of the flange connection structure, the assembly error between the output shaft of the speed-increasing driving test box and the input shaft of the gearbox to be tested can be further reduced. In the process of connecting the speed-increasing driving test box and the gearbox to be tested by using the flange connection structure, the assembly of the output shaft of the speed-increasing driving test box and the input shaft of the gearbox to be tested can be realized, thereby improving the assembly accuracy, reducing the assembly difficulty, and improving the assembly efficiency.

[0011] In an optional embodiment, the output shaft of the speed increasing driving test box is connected to the input shaft of the gear box to be tested via a spline coupling.

[0012] Based on the above scheme, the spline coupling can transmit high-speed torque, and has a simple structure and low manufacturing cost, thereby reducing the test cost. At the same time, the spline coupling has a simple structure, is easy to assemble, and has high assembly efficiency.

[0013] In an optional embodiment, the main drive device also includes a first coupling, a first torque sensor and a second coupling, the output shaft of the loading drive motor is connected to the first torque sensor through the first coupling, and the first torque sensor is connected to the input shaft of the speed increase drive test box through the second coupling.

[0014] Based on the above scheme, after the active drive device is started, the torque is transmitted to the first torque sensor through the first coupling, and the real-time torque is recorded by the first torque sensor for subsequent analysis. The first torque sensor transmits the torque to the second coupling, and the second coupling transmits the torque to the input shaft of the speed-increasing drive test box, and the torque transmission is smooth and reliable.

[0015] In an optional embodiment, each set of the output loading device includes a loading motor and a loading output test box, the motor shaft of the loading motor is connected to the input shaft of the loading output test box, and the output shaft of the loading output test box is used to connect to the output shaft of the gearbox to be tested.

[0016] Based on the above scheme, the output loading device has a simple structure and is easy to arrange. By adjusting the torque output by the loading motor through the loading output test box, the output of different speed ratios can be achieved, and the use is flexible.

[0017] In an optional embodiment, the two output shafts of the two loading output test boxes of the two sets of the output loading devices are located between the two input shafts of the two loading output test boxes.

[0018] Based on the above scheme, the two input shafts are set between the two output shafts, the distance between the two output shafts is increased, and the installation space of the two recording motors is increased, which can avoid the problem of interference between the two loading motors and the two output loading test boxes caused by the output shafts being concentrated in the middle position.

[0019] In an optional embodiment, the output loading device further comprises an intermediate coupling, one end of which is connected to the output shaft of the loading output test box, and the other end of which is used to connect to the output shaft of the gearbox to be tested.

[0020] Based on the above scheme, the torque is output through the intermediate coupling, which facilitates the connection between the output loading test box and the gearbox to be tested.

[0021] In an optional embodiment, the output loading device also includes a third coupling, a second torque sensor and a fourth coupling, the motor shaft of the loading motor is connected to the second torque sensor through the third coupling, and the second torque sensor is connected to the input shaft of the loading output test box through the fourth coupling.

[0022] Based on the above solution, torque transmission is carried out through the coupling, and the torque transmission is stable and reliable. In addition, the second torque sensor can record real-time data, which is conducive to subsequent analysis.

[0023] In an optional embodiment, the aviation oil pump high-speed gearbox loading test system further includes a test base, and the main drive device and the two sets of output loading devices are positioned on the test base.

[0024] Based on the above scheme, by setting up a test base, the main drive device and two sets of output loading devices are integrated on the test base, and their positions are more accurate, which can improve the assembly accuracy and assembly efficiency.

[0025] In an optional embodiment, an auxiliary positioning member is provided on the test base, and the auxiliary positioning member is used to assist in positioning the gearbox to be tested.

[0026] Based on the above solution, the structural stability of the gearbox to be tested can be improved by using the auxiliary positioning member.

[0027] The beneficial effects of the embodiments of the present invention include, for example:

[0028] In summary, the aviation oil pump high-speed gearbox loading test system provided in this embodiment, by adding a flange connection structure to the speed-increasing drive test box, uses the flange connection structure to connect the gearbox to be tested with the speed-increasing drive test box, the gearbox to be tested and the speed-increasing drive test box can be positioned through the flange connection structure, the positioning difficulty is low, the positioning speed is fast, and the assembly efficiency can be improved. At the same time, the gearbox to be tested is connected to the speed-increasing drive test box, the relative position of the two is stable, not easy to shift, and it is not easy to generate tangential force at the connection position of the input shaft of the speed-increasing drive test box and the output shaft of the gearbox to be tested, which is conducive to the transmission of torque and can improve the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A schematic diagram of a loading test system for an aviation oil pump high-speed gearbox according to an embodiment of the present application;

[0031] Figure 2 Schematic diagram of the aviation oil pump high-speed gearbox.

[0032] icon:

[0033] 001-gearbox to be tested; 011-positioning ear; 100-main drive device; 110-loading drive motor; 120-speed increase drive test box; 130-flange connection structure; 140-spline coupling; 150-first coupling; 160-first torque sensor; 170-second coupling; 200-output loading device; 210-loading motor; 220-loading output test box; 230-intermediate coupling; 240-third coupling; 250-second torque sensor; 260-fourth coupling. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0039] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0040] Please combine Figure 1 In this embodiment, the aviation oil pump high-speed gearbox loading test system includes a main drive device 100 and two sets of output loading devices 200; the main drive device 100 includes a loading drive motor 110, a speed-increasing drive test box 120 and a flange connection structure 130, the output shaft of the loading drive motor 110 is connected to the input shaft of the speed-increasing drive test box 120, and the output shaft of the speed-increasing drive test box 120 is used to connect with the input shaft of the gearbox 001 to be tested; the two sets of output loading devices 200 are respectively used to connect with the two output shafts of the gearbox 001 to be tested. The flange connection structure 130 is installed on the speed-increasing drive test box 120, and the flange connection structure 130 is used to be fixedly connected with the gearbox 001 to be tested.

[0041] As described above, the working mode of the aviation oil pump high-speed gearbox loading test system provided in this embodiment is as follows:

[0042] The gearbox to be tested 001 and the speed-increasing driving test box 120 are connected by the flange connection structure 130, and the input shaft of the gearbox to be tested 001 is connected to the output shaft of the speed-increasing driving test box 120. At the same time, the two output shafts of the gearbox to be tested 001 are respectively connected to the two sets of output loading devices 200. During operation, the loading drive motor 110 can be started first, and the gearbox to be tested 001 is driven to move after adjusting the torque through the speed-increasing driving test box 120, and the torque is transmitted to the two sets of output loading devices 200. This process can be understood as the operation of the gearbox to be tested 001 without applying load. Then, according to the test requirements, the working state of the two sets of output loading devices 200 is adjusted, and the reverse torque is applied to the output shaft of the gearbox to be tested 001. Various parameters are recorded during the test, and the parameters are analyzed after the test is completed, so that the operating state of the gearbox to be tested 001 can be obtained.

[0043] It should be understood that by adding a flange connection structure 130 to the speed-increasing driving test box 120, the gearbox to be tested 001 is connected to the speed-increasing driving test box 120 by using the flange connection structure 130, and the gearbox to be tested and the speed-increasing driving test box 120 can be positioned through the flange connection structure 130, and the positioning difficulty is low, the positioning speed is fast, and the assembly efficiency can be improved. At the same time, the gearbox to be tested and the speed-increasing driving test box 120 are connected together, and the relative position of the two is stable, not easy to shift, and it is not easy to generate tangential force at the connection position of the input shaft of the speed-increasing driving test box 120 and the output shaft of the gearbox to be tested, which is conducive to the transmission of torque and can improve the accuracy of the test results.

[0044] It should be noted that when assembling the gearbox to be tested 001 and the speed-increasing driving test box 120, the speed-increasing driving test box 120 can be positioned first, and then the gearbox to be tested 001 can be hoisted by hoisting equipment so that it is close to the flange connection structure 130, and the flange connection hole on the gearbox to be tested 001 is aligned with the flange connection structure 130. In this process, the input shaft of the gearbox to be tested 001 and the output shaft of the speed-increasing driving test box 120 are automatically aligned, which reduces the difficulty of installation and improves the installation efficiency. After alignment, the flange connection structure 130 is fixedly connected to the housing of the gearbox to be tested 001 by bolts, and the position of the gearbox to be tested 001 relative to the speed-increasing driving test box 120 is stable and reliable. Then, the gearbox to be tested 001 can be further positioned by auxiliary positioning parts to improve the stability of the gearbox to be tested 001.

[0045] For example, in some embodiments, the aviation oil pump high-speed gearbox loading test system also includes a test base, and the main drive device 100 and two sets of output loading devices 200 are positioned on the test base. In addition, an auxiliary positioning member is provided on the test base, and the auxiliary positioning member is used to assist in positioning the gearbox 001 to be tested. The number of auxiliary positioning members can be multiple and set as needed. In this embodiment, three auxiliary positioning members are used as an example for explanation. Please refer to Figure 2 Correspondingly, the housing of the gearbox 001 to be tested is provided with positioning ears 011 , the number of the positioning ears 011 is three, and the three auxiliary positioning members are respectively connected to the three positioning ears 011 .

[0046] It is worth noting that the aviation fuel pump high-speed gearbox loading test system provided in this embodiment is mainly suitable for loading tests on aviation fuel pump high-tooth gearboxes. Obviously, other types of gearboxes can also be loaded and tested as needed, which are not listed one by one in this embodiment.

[0047] The following embodiments illustrate the detailed structure of the aviation oil pump high-speed gearbox loading test system provided by the present application by way of examples.

[0048] Please combine Figure 1 In this embodiment, optionally, the aviation oil pump high-speed gearbox loading test system includes a test base, a main drive device 100 and two sets of output loading devices 200. The main drive device 100 and the two sets of output loading devices 200 are all installed on the test base. The main drive device 100 includes a loading drive motor 110, a speed-increasing drive test box 120 and a flange connection structure 130. The output shaft of the loading drive motor 110 is connected to the input shaft of the speed-increasing drive test box 120, and the output shaft of the speed-increasing drive test box 120 is used to connect to the input shaft of the gearbox 001 to be tested; the two sets of output loading devices 200 are respectively used to connect to the two output shafts of the gearbox 001 to be tested. The flange connection structure 130 is installed on the speed-increasing drive test box 120, and the flange connection structure 130 is used to be fixedly connected to the gearbox 001 to be tested.

[0049] By positioning the gearbox 001 to be tested, the main drive device 100 and the two sets of output loading devices 200 on the test base, it is convenient to determine the relative positions of multiple components, and the assembly efficiency is high.

[0050] In this embodiment, the flange connection structure 130 is optionally coaxially arranged with the output shaft of the speed-increasing driving test box 120, and the output shaft of the speed-increasing driving test box 120 is located in the area surrounded by the flange connection structure 130. In this way, the position of the flange connection structure 130 can be designed with reference to the position of the output shaft, thereby improving the accuracy of the position of the flange connection structure 130 relative to the output shaft of the speed-increasing driving test box 120. Due to the high accuracy of the position of the flange connection structure 130, the assembly error of the output shaft of the speed-increasing driving test box 120 and the input shaft of the gear box 001 to be tested can be further reduced. In the process of connecting the speed-increasing driving test box 120 and the gear box 001 to be tested by using the flange connection structure 130, the assembly of the output shaft of the speed-increasing driving test box 120 and the input shaft of the gear box 001 to be tested can be realized, thereby improving the assembly accuracy, reducing the assembly difficulty, and improving the assembly efficiency.

[0051] Please combine Figure 1 In this embodiment, optionally, the output shaft of the speed-increasing driving test box 120 is connected to the input shaft of the gearbox to be tested 001 through a spline coupling 140. The spline coupling 140 can transmit high-speed torque, and has a simple structure and low manufacturing cost, thereby reducing the test cost. At the same time, the spline coupling 140 has a simple structure, is easy to assemble, and has high assembly efficiency. Since the speed-increasing driving test box 120 and the gearbox to be tested 001 are connected through the flange connection structure 130, the spline coupling 140 can be quickly aligned, shortening the assembly time and improving the assembly efficiency.

[0052] For example, the output shaft of the speed increasing driving test box 120 can be set as an external spline shaft, and the input shaft of the gear box 001 to be tested can be set as an internal spline shaft, and the external spline shaft is inserted into the internal spline shaft, and the two are meshed to transmit torque.

[0053] In this embodiment, optionally, the main drive device 100 also includes a first coupling 150, a first torque sensor 160 and a second coupling 170, the output shaft of the loading drive motor 110 is connected to the first torque sensor 160 through the first coupling 150, and the first torque sensor 160 is connected to the input shaft of the speed-increasing drive test box 120 through the second coupling 170.

[0054] It should be noted that after the active drive device is started, the torque is transmitted to the first torque sensor 160 through the first coupling 150, and the real-time torque is recorded by the first torque sensor 160 for subsequent analysis. The first torque sensor 160 transmits the torque to the second coupling 170, and the second coupling 170 transmits the torque to the input shaft of the speed-increasing drive test box 120, and the torque transmission is stable and reliable.

[0055] Please combine Figure 1In this embodiment, optionally, each set of output loading device 200 includes a loading motor 210, a loading output test box 220, an intermediate coupling 230, a third coupling 240, a second torque sensor 250 and a fourth coupling 260. The motor shaft of the loading motor 210 is connected to the input shaft of the loading output test box 220, and the output shaft of the loading output test box 220 is used to connect with the output shaft of the gear box 001 to be tested. One end of the intermediate coupling 230 is connected to the output shaft of the loading output test box 220, and the other end of the intermediate coupling 230 is used to connect with the output shaft of the gear box 001 to be tested. The motor shaft of the loading motor 210 is connected to the second torque sensor 250 through the third coupling 240, and the second torque sensor 250 is connected to the input shaft of the loading output test box through the fourth coupling 260. During operation, when a load needs to be applied to the gearbox to be tested 001 through the loading motor 210, the recording motor is started, and the torque is transmitted to the second torque sensor 250 through the third coupling 240, and then transmitted to the input part of the loading output test box 220 through the fourth coupling 260, and then transmitted to the intermediate coupling 230 through the output part of the loading output test box 220, and finally transmitted to the output shaft of the gearbox to be tested 001. The torque transmission is stable and reliable, and the second torque sensor 250 can record real-time data, which is conducive to subsequent analysis.

[0056] It should be understood that the two loading motors 210 can operate independently or simultaneously, depending on the needs.

[0057] Optionally, the two output shafts of the two loading output test boxes 220 of the two sets of output loading devices 200 are located between the two input shafts of the two loading output test boxes 220. By arranging the two input shafts between the two output shafts, the distance between the two output shafts is increased, the installation space of the two recording motors is increased, and the problem of interference between the two loading motors 210 and the two output loading test boxes caused by the output shafts being concentrated in the middle position can be avoided.

[0058] It should be understood that the first coupling 150, the second coupling 170, the third coupling 240 and the fourth coupling 260 may all be diaphragm couplings.

[0059] The aviation oil pump high-speed gearbox loading test system provided in this embodiment uses a flange connection structure 130 to connect the speed-increasing driving test box 120 and the gearbox to be tested 001, which can provide positioning for the installation of the input shaft of the gearbox to be tested 001 and the output shaft of the speed-increasing driving test box 120, reduce the difficulty of assembling the two, and improve the assembly efficiency of the two. In addition, during the test, the relative position of the gearbox to be tested 001 and the speed-increasing driving test box 120 is stable and not easy to shift, the torque transmission is stable and reliable, the system has a long service life, and the failure rate is low.

[0060] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An aviation oil pump high-speed gearbox loading test system, characterized in that: include: A main drive device (100) and two sets of output loading devices (200); the main drive device (100) comprises a loading drive motor (110), a speed-increasing driving test box (120) and a flange connection structure (130); the output shaft of the loading drive motor (110) is connected to the input shaft of the speed-increasing driving test box (120); the output shaft of the speed-increasing driving test box (120) is used to be connected to the input shaft of a gear box (001) to be tested; the two sets of output loading devices (200) are used to be connected to the two output shafts of the gear box (001) to be tested respectively; The flange connection structure (130) is installed on the speed-increasing driving test box (120), and the flange connection structure (130) is used for fixed connection with the gear box (001) to be tested.

2. The aviation oil pump high-speed gearbox loading test system according to claim 1 is characterized in that: The flange connection structure (130) is coaxially arranged with the output shaft of the speed-increasing driving test box (120), and the output shaft of the speed-increasing driving test box (120) is located within the area surrounded by the flange connection structure (130).

3. The aviation oil pump high-speed gearbox loading test system according to claim 1 is characterized in that: The output shaft of the speed-increasing driving test box (120) is connected to the input shaft of the gear box (001) to be tested via a spline coupling (140).

4. The aviation oil pump high-speed gearbox loading test system according to claim 1, characterized in that: The main drive device (100) further comprises a first coupling (150), a first torque sensor (160) and a second coupling (170); the output shaft of the loading drive motor (110) is connected to the first torque sensor (160) via the first coupling (150); and the first torque sensor (160) is connected to the input shaft of the speed-increasing drive test box (120) via the second coupling (170).

5. The aviation oil pump high-speed gearbox loading test system according to claim 1, characterized in that: Each set of the output loading device (200) comprises a loading motor (210) and a loading output test box (220); the motor shaft of the loading motor (210) is connected to the input shaft of the loading output test box (220); and the output shaft of the loading output test box (220) is used to be connected to the output shaft of the gearbox (001) to be tested.

6. The aviation oil pump high-speed gearbox loading test system according to claim 5, characterized in that: The two output shafts of the two loading output test boxes (220) of the two sets of the output loading devices (200) are located between the two input shafts of the two loading output test boxes (220).

7. The aviation oil pump high-speed gearbox loading test system according to claim 5, characterized in that: The output loading device (200) further comprises an intermediate coupling (230), one end of which is connected to the output shaft of the loading output test box (220), and the other end of which is used to be connected to the output shaft of the gear box (001) to be tested.

8. The aviation oil pump high-speed gearbox loading test system according to claim 5, characterized in that: The output loading device further comprises a third coupling (240), a second torque sensor (250) and a fourth coupling (260); the motor shaft of the loading motor (210) is connected to the second torque sensor (250) via the third coupling (240); and the second torque sensor (250) is connected to the input shaft of the loading output test box via the fourth coupling (260).

9. The aviation oil pump high-speed gearbox loading test system according to claim 1, characterized in that: The aviation oil pump high-speed gearbox loading test system also includes a test base, and the main drive device (100) and two sets of output loading devices (200) are both positioned on the test base.

10. The aviation oil pump high-speed gearbox loading test system according to claim 9, characterized in that: The test base is provided with an auxiliary positioning piece, and the auxiliary positioning piece is used to assist in positioning the gearbox (001) to be tested.

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