Device for testing large torque of thrust pull rod of aero-engine

Abstract

The invention provides a device for a large torque test of an aero-engine thrust pull rod, and belongs to the technical field of heavy-load threaded connecting piece test detection, and the device specifically comprises a base, a driving mechanism, a torque sensor, a tool buckle and a clamping mechanism. The driving mechanism is installed on the base, the torque sensor is installed on the base, and the input end of the torque sensor is connected with an output shaft of the driving mechanism. One end of the tool buckle is connected with an output shaft of the torque sensor, the other end of the tool buckle is provided with a clamping assembly matched with the pull rod adapter, the clamping assembly limits circumferential movement of the tool buckle and the pull rod adapter around a first axis, and the clamping mechanism is installed on the base and used for clamping the periphery of a main body part of a tested thrust pull rod. The rotation of the main body part around the first axis is limited; the driving mechanism drives the tool buckle to rotate around the first axis through the torque sensor. According to the processing scheme, the precision of the torque test of the thrust pull rod is improved.

Description

Technical Field

[0001] This application relates to the field of test and detection of heavy-duty threaded connectors, and particularly to a device for large-torque testing of thrust rods of aero-engines. Background Art

[0002] Heavy-duty threaded connectors are mechanical connection components that use threads to transmit large-torque loads. They can greatly reduce the structural complexity of large-torque load connectors, reduce the overall structural weight, enhance the overall structural strength of the connected mechanism, and reduce the occurrence of fracture failures of large-torque load connectors. Large-torque and variable-torque experiments are important indicators for measuring the performance of heavy-duty threaded connectors. Since heavy-duty threaded connectors are mainly used in special machinery and the sizes of the connected mechanisms are different, currently, manual intermittent loading is mainly used to test different models of heavy-duty threaded connectors. This testing method requires a lot of manpower, has a long testing time, and high costs. Moreover, when testing different models of heavy-duty threaded connectors, manual adjustment of the test tooling is required frequently, which is time-consuming and laborious and the quality is inconsistent, and it is very easy to cause invalid experiments.

[0003] Currently, in engineering, there are studies on the serious waste of manpower in testing the torques of different models of threaded connectors by torque testing devices and the inconsistent quality caused by frequent manual adjustment of test tooling. Most studies achieve the testing of torques of different models of threaded connectors by changing the fixed position of the torque increasing mechanism, solving the problems of serious waste of manpower and inconsistent quality caused by using special models of torque testing devices when testing the torques of different models of heavy-duty threaded connectors. However, the torque of the existing threaded torque testing device is manually loaded, the torque is discontinuous, and it is difficult to obtain accurate calibration for the accurate performance data of heavy-duty threaded connectors, thus affecting the load capacity of heavy-duty threaded connectors. Summary of the Invention

[0004] In view of this, this application provides a device for large-torque testing of thrust rods of aero-engines, solving the problems in the prior art and improving the torque testing and accuracy of thrust rods.

[0005] The device for large-torque testing of thrust rods of aero-engines provided by this application adopts the following technical solutions:

[0006] A device for large-torque testing of thrust rods of aero-engines is used to test the torque of a thrust rod. The thrust rod includes a main body part and rod adaptors connected to both ends of the main body part. The rod adaptors and the main body part are connected by threads, and the central axis of the threads connecting the rod adaptors and the main body part is the first axis. The torque testing device includes a base, a driving mechanism, a torque sensor, a tooling buckle, and a clamping mechanism;

[0007] The driving mechanism is installed on the base, the torque sensor is installed on the base, and the input end of the torque sensor is connected to the output shaft of the driving mechanism; one end of the tooling buckle is connected to the output shaft of the torque sensor, and the other end of the tooling buckle is provided with a clamping component for cooperating with the pull rod adapter. The clamping component restricts the circumferential movement of the tooling buckle and the pull rod adapter around the first axis. The clamping mechanism is installed on the base, and the clamping mechanism is used to clamp the outer circumference of the main body of the measured thrust pull rod to restrict the rotation of the main body around the first axis;

[0008] Wherein, the driving mechanism drives the tooling buckle to rotate around the first axis through the torque sensor.

[0009] Optionally, the driving mechanism includes a motor and a speed reducer. The motor and the speed reducer are fixed on the base. The output shaft of the motor is connected to the input shaft of the speed reducer through a first coupling. The output shaft of the speed reducer is connected to the input shaft of the torque sensor through a second coupling. The output shaft of the torque sensor and the tooling buckle are connected through a third coupling.

[0010] Optionally, the pull rod adapter includes a conical connector and connecting lugs. The large diameter end of the conical connector is connected to the main body part, and two spaced and parallel connecting lugs are provided at the small diameter end of the conical connector. Connecting holes are provided on the connecting lugs;

[0011] The output shaft of the third coupling is a polygonal column. One end of the tooling buckle is provided with a docking groove matching the polygonal column. The docking groove is clamped with the output shaft of the third coupling. One end of the tooling buckle away from the docking groove is provided with a clamping groove. The clamping groove includes a first section structure and a second section structure that communicate with each other. A column is provided inside the first section structure. The column divides the first section structure into two slots matching the connecting lugs. Wherein, each of the two slots accommodates one of the connecting lugs, and the second section structure is used to accommodate the conical connector.

[0012] Optionally, the second section structure is a conical hole matching the conical connector.

[0013] Optionally, the torque testing device further includes a positioning pin. A positioning hole penetrating the side wall of the clamping groove and the column is provided on the tooling buckle, and the rod part of the positioning pin is located in the positioning hole.

[0014] Optionally, the torque testing device further includes a slide rail installed on the base and a slide seat sliding along the slide rail. The length direction of the slide rail is parallel to the first axis, and the clamping mechanism is installed on the slide seat.

[0015] Optionally, the clamping mechanism is a three-jaw chuck, or; the clamping mechanism includes a fixed plate, a movable plate, and a hydraulic cylinder. The fixed plate and the hydraulic cylinder are fixed on the sliding seat. The telescopic shaft of the hydraulic cylinder is fixedly connected to the movable plate. The fixed plate and the movable plate are arranged opposite to each other. The hydraulic cylinder drives the movable plate to approach and move away from the fixed plate. The telescopic direction of the telescopic shaft of the hydraulic cylinder is perpendicular to the first axis.

[0016] In summary, the present application includes the following beneficial technical effects:

[0017] By providing a power source through the driving mechanism, continuous loading of the thrust rod can be achieved. Combined with the method of directly measuring by the torque sensor, it is ensured that the torque load of the heavy-duty threaded connection is automatically and continuously loaded during the experiment, and the torque value of the experiment is directly output through the torque sensor, enabling the heavy-duty threaded connection to obtain an accurate torque load value, thereby enabling precise control of the torque load value during the experiment process and effectively improving the accuracy of torque testing of heavy-duty threaded connections. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the device for large torque testing of the thrust rod of an aeroengine;

[0020] Figure 2 is Figure 1 top view of;

[0021] Figure 3 It is a schematic diagram of the structure of the tooling buckle of the present application;

[0022] Figure 4 It is a schematic diagram of the connection structure between the tooling buckle and the rod adapter of the present application.

[0023] Description of the reference numerals: 1. Motor; 2. First coupling; 3. Reducer; 4. Second coupling; 5. Torque sensor; 6. Third coupling; 7. Tooling buckle; 701. Docking groove; 702. Positioning hole; 703. Positioning pin; 704. Clamping groove; 705. First section structure; 706. Second section structure; 707. Column; 8. Thrust pull rod; 81. Main body part; 82. Pull rod adapter; 83. Tapered connector; 84. Connecting lug; 9. Clamping mechanism; 11. Slide rail; 12. First bolt; 13. Base; 14. Slide seat; 15. Second bolt; 16. Third bolt; 17. First support; 18. Fourth bolt; 19. Second support; 20. Fifth bolt; 21. Third support; 22. Control box. Detailed implementation manners

[0024] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0025] The following uses specific specific examples to illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0026] It should be noted that the following describes various aspects of the embodiments within the scope of the appended claims. It should be obvious that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is illustrative only. Based on the present application, those skilled in the art should understand that one aspect described herein can be implemented independently of any other aspect, and these aspects can be combined in various ways in two or more of them. For example, any number of aspects described herein can be used to implement the device and / or practice the method. In addition, this device can be implemented and this method can be practiced using other structures and / or functions in addition to one or more of the aspects described herein.

[0027] It should also be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner. The diagrams only show the components related to the present application, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0028] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0029] An embodiment of the present application provides a device for testing the large torque of a thrust rod of an aero-engine.

[0030] As Figures 1 to 4 shown, a device for testing the large torque of a thrust rod of an aero-engine is used to test the torque of the thrust rod 8. The thrust rod 8 includes a main body portion 81 and rod joint adapters 82 connected to both ends of the main body portion 81. The rod joint adapter 82 and the main body portion 81 are connected by threads, and the central axis of the threads connecting the rod joint adapter 82 and the main body portion 81 is the first axis.

[0031] The torque testing device includes a base 13, a driving mechanism, a torque sensor 5, a tooling buckle 7, and a clamping mechanism 9.

[0032] The driving mechanism is installed on the base 13, the torque sensor 5 is installed on the base 13, and the input end of the torque sensor 5 is connected to the output shaft of the driving mechanism; one end of the tooling buckle 7 is connected to the output shaft of the torque sensor 5, and the other end of the tooling buckle 7 is provided with a clamping component that cooperates with the rod joint adapter 82. The clamping component restricts the circumferential movement of the tooling buckle 7 and the rod joint adapter 82 around the first axis. The clamping mechanism 9 is installed on the base 13, and the clamping mechanism 9 is used to clamp the outer circumference of the main body portion 81 of the thrust rod 8 to be tested to restrict the rotation of the main body portion 81 around the first axis. Among them, the driving mechanism drives the tooling buckle 7 to rotate around the first axis through the torque sensor 5.

[0033] When testing the thrust rod 8, the rod joint adapter 82 at one end of the thrust rod 8 is matched with the clamping component, and the main body portion 81 of the thrust rod 8 to be tested is fixed through the clamping mechanism 9. The driving mechanism is started, and the driving mechanism drives the tooling buckle 7 to rotate forward and backward multiple times through the torque sensor 5. The tooling buckle 7 drives the rod joint adapter 82 to rotate, so that the rod joint adapter 82 and the main body portion 81 are repeatedly tightened and loosened. Then, the torque sensor 5 is used to observe and record the torque magnitude during the repeated tightening and loosening process of the rod joint adapter 82 and the main body portion 81, so as to obtain accurate performance data of the threaded connection of the thrust rod 8.

[0034] The driving mechanism includes a motor 1 and a speed reducer 3. The motor 1 and the speed reducer 3 are fixed on a base 13. The output shaft of the motor 1 and the input shaft of the speed reducer 3 are connected by a first coupling 2. The output shaft of the speed reducer 3 and the input shaft of a torque sensor 5 are connected by a second coupling 4. The output shaft of the torque sensor 5 and a tooling buckle 7 are connected by a third coupling 6. The speed reducer 3 serves as a torque increaser, and after reducing the speed of the output shaft of the motor 1 and increasing the torque, it outputs to the torque sensor 5 and the tooling buckle 7.

[0035] By providing a power source with the motor 1 and the speed reducer 3, continuous loading of a thrust rod 8 can be achieved. Combining with the method of directly measuring by the torque sensor 5, it ensures that the torque load of the heavy-duty threaded connection realizes automatic continuous loading during the experiment, and the torque value of the experiment is directly output through the torque sensor 5, enabling the heavy-duty threaded connection to obtain an accurate torque load value, thereby enabling the torque load value in the experimental process to be accurately controlled and effectively improving the accuracy of torque testing of the heavy-duty threaded connection.

[0036] The rod adapter 82 includes a tapered connector 83 and a connecting lug 84. The large-diameter end of the tapered connector 83 is connected to the main body portion 81. The small-diameter end of the tapered connector 83 is provided with two spaced and parallel connecting lugs 84, and connection holes are provided on the connecting lugs 84. The output shaft of the third coupling 6 is a polygonal column 707. One end of the tooling buckle 7 is provided with a docking groove 701 that matches the polygonal column 707, and the docking groove 701 is clamped with the output shaft of the third coupling 6. One end of the tooling buckle 7 away from the docking groove 701 is provided with a clamping groove 704. The clamping groove 704 includes a first section structure 705 and a second section structure 706 that are interconnected. A column 707 is provided inside the first section structure 705, and the column 707 divides the first section structure 705 into two slots that match the connecting lugs 84. Among them, each of the two slots accommodates one of the connecting lugs 84, and the second section structure 706 is used to accommodate the tapered connector 83. In the embodiment of the present application, the inner wall structure of the clamping groove 704 and the column 707 serve as the clamping assembly; the docking groove 701 is wedge-shaped, and the wedge-shaped docking groove 701 forms a fit with the third coupling 6, which can realize radial micro-swing between the tooling buckle 7 and the third coupling 6.

[0037] In the embodiment of the present application, the slots and the connecting lugs 84 are in transitional fit. The connection between the tooling buckle 7 and the rod adapter 82 is realized through the fit between the slots and the connecting lugs 84. When the tooling buckle 7 rotates, it drives the rod adapter 82 to rotate. At the same time, the second section structure 706 is a tapered hole that matches the tapered connector 83. This ensures the stable docking between the tooling buckle 7 and the rod adapter 82.

[0038] The device for torque test further includes a positioning pin 703. The tool buckle 7 is provided with a positioning hole 702 penetrating through the side wall of the clamping groove 704 and the column 707, and the rod portion of the positioning pin 703 is located in the positioning hole 702. The positioning pin 703 and the positioning hole 702 are in transitional fit, reducing the relative movement between the pull rod adapter 82 and the tool buckle 7 and improving the accuracy of the test.

[0039] The device for torque test further includes a slide rail 11 installed on the base 13 and a slide seat 14 sliding along the slide rail 11. The length direction of the slide rail 11 is parallel to the first axis, and the clamping mechanism 9 is installed on the slide seat 14. By sliding the slide seat 14 on the slide rail 11, the distance between the clamping mechanism 9 and the tool buckle 7 can be controlled. When dealing with thrust pull rods 8 of different lengths, the clamping mechanism 9 can clamp at the middle position of the main body portion 81 or at one end of the main body portion 81 away from the tool buckle 7, ensuring the stability of the thrust pull rod 8 during the test and preventing the thrust pull rod 8 from tipping to one side. In one embodiment, the clamping mechanism 9 is a three-jaw chuck.

[0040] In another embodiment, the clamping mechanism 9 includes a fixed plate, a movable plate and a hydraulic cylinder. The fixed plate and the hydraulic cylinder are fixed on the slide seat 14. The telescopic shaft of the hydraulic cylinder is fixedly connected to the movable plate. The fixed plate and the movable plate are arranged oppositely. The hydraulic cylinder drives the movable plate to approach and move away from the fixed plate, and the telescopic direction of the telescopic shaft of the hydraulic cylinder is perpendicular to the first axis.

[0041] For the above two embodiments of the clamping mechanism 9 given in this application, stable clamping can be achieved for thrust pull rods 8 of different sizes. At the same time, the tool buckle 7 and the third coupling 6 in this application are detachably connected by bolts. For thrust pull rods 8 of different sizes, tool buckles 7 of different sizes can be replaced, thus effectively improving the practicability of the torque test device, greatly saving resources and reducing the cost of the test experiment of the heavy-duty threaded connectors of the thrust pull rod 8.

[0042] For the specific connection structures between the components in the embodiments of this application, the clamping mechanism 9 is fixedly connected to the slide seat 14 through a first bolt 12, the slide rail 11 is fixed on the base 13 through a second bolt 15, the torque sensor 5 is installed on the base 13 through a first support 17, the first support 17 is fixed on the base 13 through a third bolt 16, the speed reducer 3 is installed on the base 13 through a second support 19, the second support 19 is fixed on the base 13 through a fourth bolt 18, the motor 1 is installed on the base 13 through a third support, and the third support is fixed on the base 13 through a fifth bolt.

[0043] In the embodiment of this application, a control box for controlling the start-stop and speed of the motor 1 is also provided, and the control box is installed on the base 13.

[0044] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A device for high-torque testing of a thrust rod of an aeroengine, which is used to test the torque of the thrust rod (8). The thrust rod (8) includes a main body part (81) and rod-end adapters (82) connected to both ends of the main body part (81). The rod-end adapters (82) and the main body part (81) are connected by threads. The central axis of the threads connecting the rod-end adapters (82) and the main body part (81) is the first axis. It is characterized in that, The device for torque testing includes a base (13), a driving mechanism, a torque sensor (5), a tooling buckle (7), and a clamping mechanism (9); The driving mechanism is installed on the base (13), the torque sensor (5) is installed on the base (13), and the input end of the torque sensor (5) is connected to the output shaft of the driving mechanism; one end of the tooling buckle (7) is connected to the output shaft of the torque sensor (5), and the other end of the tooling buckle (7) is provided with a clamping component that cooperates with the pull rod adapter (82). The clamping component restricts the circumferential movement of the tooling buckle (7) and the pull rod adapter (82) around the first axis. The clamping mechanism (9) is installed on the base (13), and the clamping mechanism (9) is used to clamp the outer circumference of the main body part (81) of the measured thrust pull rod (8) to restrict the rotation of the main body part (81) around the first axis; Wherein, the driving mechanism drives the tooling buckle (7) to rotate around the first axis through the torque sensor (5).

2. The device for large torque test of the thrust rod of an aero-engine according to claim 1, characterized in that The driving mechanism includes a motor (1) and a speed reducer (3). The motor (1) and the speed reducer (3) are fixed on the base (13). The output shaft of the motor (1) is connected to the input shaft of the speed reducer (3) through a first coupling (2). The output shaft of the speed reducer (3) is connected to the input shaft of the torque sensor (5) through a second coupling (4). The output shaft of the torque sensor (5) and the tooling buckle (7) are connected through a third coupling (6).

3. The device for large torque test of the thrust rod of an aero-engine according to claim 2, characterized in that The pull rod adapter (82) includes a conical connector (83) and a connecting lug (84). The large diameter end of the conical connector (83) is connected to the main body part (81). The small diameter end of the conical connector (83) is provided with two spaced and parallel connecting lugs (84), and the connecting lugs (84) are provided with connecting holes; The output shaft of the third coupling (6) is a polygonal column (707). One end of the tooling buckle (7) is provided with a docking groove (701) that matches the polygonal column (707). The docking groove (701) is clamped with the output shaft of the third coupling (6). One end of the tooling buckle (7) away from the docking groove (701) is provided with a clamping groove (704). The clamping groove (704) includes a first section structure (705) and a second section structure (706) that communicate with each other. The first section structure (705) is internally provided with a column (707). The column (707) divides the first section structure (705) into two slots that match the connecting lugs (84). Among them, each of the two slots accommodates one of the connecting lugs (84), and the second section structure (706) is used to accommodate the conical connector (83).

4. The device for large torque test of the thrust rod of an aero-engine according to claim 3, characterized in that The second section structure (706) is a conical hole that matches the conical connector (83).

5. The device for large torque testing of the thrust rod of an aeroengine according to claim 3, wherein, The device for torque testing further includes a positioning pin (703). The tooling buckle (7) is provided with a positioning hole (702) that penetrates the side wall of the clamping groove (704) and the column (707). The rod part of the positioning pin (703) is located in the positioning hole (702).

6. The device for large torque test of the thrust rod of an aero-engine according to claim 1, characterized in that, The device for torque test further includes a slide rail (11) installed on the base (13) and a slide block (14) sliding along the slide rail (11). The length direction of the slide rail (11) is parallel to the first axis, and the clamping mechanism (9) is installed on the slide block (14).

7. The device for large torque test of the thrust rod of an aeroengine according to claim 6, wherein, The clamping mechanism (9) is a chuck, or; the clamping mechanism (9) includes a fixed plate, a movable plate and a hydraulic cylinder. The fixed plate and the hydraulic cylinder are fixed on the slide block (14), the telescopic shaft of the hydraulic cylinder is fixedly connected to the movable plate, the fixed plate and the movable plate are arranged oppositely, the hydraulic cylinder drives the movable plate to approach and move away from the fixed plate, and the telescopic direction of the telescopic shaft of the hydraulic cylinder is perpendicular to the first axis.

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