Strength detection device for empennage frame

Abstract

The utility model discloses a strength detection device for an empennage frame, and the device comprises an empennage frame fixing assembly which is used for fixing an empennage frame workpiece in the detection process; the empennage frame detection assembly is used for providing pressure for the empennage frame workpiece and detecting the empennage frame workpiece; and the testing machine assembly is connected with the empennage frame detection assembly and is used for providing power and recording the pressure. The device provided by the utility model can accurately reproduce the stress state of the empennage frame under the actual working condition, and ensures that the test condition is highly consistent with the real scene, and the detection result has higher engineering reference value; the empennage frame strength detection device in the structural form is simple in structure, reasonable in layout and convenient to operate, parts can be quickly mounted and dismounted, the pressure condition borne by the empennage frame in the working process is simulated, and the strength of the empennage frame is detected. The detection device is simple in manufacturing process and low in processing cost, and can visually distinguish the parts under the specified load and ensure the part form integrity, the assembly quality consistency and the part performance reliability after the parts are pressed.

Description

Technical Field

[0001] This utility model relates to the field of testing device technology, and in particular to a strength testing device for a tail fin support. Background Technology

[0002] In the attitude control of a certain aircraft, the tail fin needs to withstand a large force. In order to ensure product quality, it is necessary to simulate the pressure on the tail fin during operation, test the strength of the tail fin, and prevent the parts from deforming or even tearing and failing in subsequent operations. Therefore, there is an urgent need for a tail fin strength testing device. Utility Model Content

[0003] In view of this, the present invention provides a tail wing strength testing device, which uses a pressure block and a positioning sleeve, combined with an electronic universal testing machine, to simulate the pressure on the tail wing during operation and test the strength of the tail wing. Specifically, it is a tail wing strength testing device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A strength testing device for a tail fin support, comprising:

[0006] Tail fin mounting fixing assembly, used to fix the tail fin mounting workpiece during inspection;

[0007] Tail fin inspection assembly, used to apply pressure to tail fin workpieces for inspection;

[0008] The testing machine assembly connects to the tail fin test assembly, providing power and recording the pressure magnitude.

[0009] As a further improvement to the above technical solution:

[0010] An optimized version of the above technical solution is that the tail wing mounting fixing assembly includes a base plate, a locking assembly disposed above the base plate, and a positioning sleeve disposed within the locking assembly, wherein the tail wing workpiece is fitted onto the positioning sleeve.

[0011] An optimized version of the above technical solution is that the locking assembly includes a support block and a locking ring disposed on the upper surfaces of the front and rear ends of the base plate. The upper end of the support block is arc-shaped, and the positioning sleeve is placed inside the arc at the upper end of the support block. The two ends of the locking ring are connected to the left and right sides of the upper surface of the support block for locking the positioning sleeve.

[0012] An optimized version of the above technical solution is that a positioning pin is provided at the lower end of the base plate for connecting with the test workbench.

[0013] An optimized version of the above technical solution is that the base plate is provided with fixing holes, and is fixedly connected to the test workbench by bolts.

[0014] An optimized version of the above technical solution is that the tail fin testing assembly includes a connecting plate, pressure blocks disposed at the left and right ends of the connecting plate, and a connector disposed in the middle of the connecting plate for connecting with the testing machine assembly.

[0015] An optimized version of the above technical solution is that a fixing nut is screwed onto the upper end of the connector to fix the connector to the testing machine assembly.

[0016] An optimized version of the above technical solution is that the lower end of the connector is inserted into the connecting plate and fixed by a shaft pin.

[0017] An optimized version of the above technical solution is as follows: the testing machine assembly includes a testing machine indenter and a testing machine pull rod. The lower end of the testing machine indenter is provided with a vertical mounting hole, and the testing machine indenter is provided with a main insertion fixing hole in the horizontal direction. The connector is provided with an insertion fixing hole above it. The connector is installed in the mounting hole and is inserted into the main insertion fixing hole and the insertion fixing hole through the testing machine pull rod to complete the connection. The upper end of the testing machine indenter is connected to an electronic universal testing machine.

[0018] Compared with existing technologies, the beneficial effects of this utility model are:

[0019] The device provided by this utility model can accurately reproduce the stress state of the tail fin under actual working conditions, ensuring that the test conditions are highly consistent with the real scene, and the test results are more valuable for engineering reference.

[0020] Secondly, the tail fin strength testing device has a simple structure, reasonable layout, and convenient operation. It can quickly install and disassemble parts, simulate the pressure conditions of the tail fin during operation, and test the strength of the tail fin.

[0021] This testing device has a simple manufacturing process and low processing cost. It can intuitively distinguish the integrity of the part shape, the consistency of assembly quality, and the reliability of component performance under specified loads. It is suitable for widespread application in this field. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the front view sectional structure of the workpiece containing the tail fin frame of this utility model.

[0024] Figure 3This is a side view sectional structural schematic diagram of the workpiece containing the tail fin frame of this utility model.

[0025] In the diagram: 1. Base plate; 2. Support block; 3. Locking ring; 4. Positioning sleeve; 5. Positioning pin; 6. Fixing waist hole; 7. Connecting plate; 8. Pressure block; 9. Connector; 10. Fixing nut; 11. Shaft pin; 12. Testing machine pressure head; 13. Testing machine tie rod; 14. Mounting hole; 15. Main insertion fixing hole; 16. Inserted fixing hole; 17. Electronic universal testing machine; 18. Tail wing frame workpiece. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] As attached Figure 1 To be continued Figure 3 As shown, the technical solution of this embodiment mainly includes two parts: 1. The fixing part of the tail wing frame workpiece 18; 2. The pressure detection part of the tail wing frame workpiece 18.

[0030] 1. Fixing part of tail wing bracket 18

[0031] The fixing part of the tail wing frame workpiece 18 is mainly used to fix the tail wing frame workpiece 18 for easy subsequent inspection. Therefore, its structure is as follows: base plate 1, whose main function is to connect with the test workbench. Therefore, a positioning pin 5 is provided on the lower surface of the base plate 1. The positioning pin 5 ensures that the center of the testing device is consistent with the center of the testing machine and is then installed and fixed on the test machine workbench. At the same time, several fixing holes 6 are provided at the front and rear ends of the base plate 1, which are then connected to the test workbench by bolts to achieve the effect of fixing with the test machine workbench.

[0032] Support blocks 2 are vertically installed at the front and rear ends of the upper surface of the base plate 1. The upper end of the support block 2 is arc-shaped, but other shapes can also be used. This is mainly to ensure that the two ends of the positioning sleeve 4 have the same shape. If a square or irregular shape is used, the shape can be adjusted. At the same time, a locking ring 3 is screwed to the upper end of the support block 2 by bolts. The locking ring 3 and the upper end of the support block 2 form a fixed space. Therefore, a positioning sleeve 4 is placed between the locking ring 3 and the support block 2. By adjusting the screwing depth of the bolts at both ends of the locking ring 3, positioning sleeves 4 of different sizes can be adapted.

[0033] The positioning sleeve 4 is mainly used to fit the tail wing frame workpiece 18. After fitting, the tail wing frame workpiece 18 should be symmetrical in the horizontal direction.

[0034] II. Pressure testing section of tail fin assembly 18

[0035] The pressure detection section of the tail fin assembly 18 is mainly used to apply pressure to the tail fin assembly 18 and is connected to the electronic universal testing machine 17 (only a part is shown in the attached figure, as it is prior art and well known to those skilled in the art). Therefore, its structure is as follows:

[0036] The connecting plate 7 is used to connect and install components. Therefore, pressure blocks 8 are provided at both ends of the connecting plate 7. The lower surface of the pressure block 8 faces the winglets on both sides of the tail wing frame workpiece 18. A connector 9 is inserted into the middle of the pressure block 8. A shaft pin 11 is inserted into the connecting plate 7 to fix the connector 9.

[0037] A fixing nut 10 is screwed onto the top of the connector 9, and an insertion fixing hole 16 is provided. Its main function is to insert the upper end of the connector 9 into the mounting hole 14 on the lower surface of the testing machine pressure head 12. The testing machine pressure head 12 has a main insertion fixing hole 15 in the horizontal direction. A testing machine pull rod 13 is inserted through the main insertion fixing hole 15 and the insertion fixing hole 16, so that the connector 9 is connected to the testing machine pressure head 12. At the same time, the fixing nut 10 is screwed in in the opposite direction, so that the fixing nut 10 contacts the testing machine pressure head 12, achieving a fixing effect without shaking, and ensuring overall stability.

[0038] As can be seen from the above, the overall structure is relatively simple, quick to install, and convenient for testing the strength of the tail wing frame workpiece 18.

[0039] The process of using this technical solution is as follows:

[0040] Step 1: The base plate 1 is connected to the test workbench by the positioning pin 5, and the base plate 1 is fixed by screws and multiple fixing holes 6;

[0041] Step 2: Fit the tail wing frame workpiece 18 into the positioning sleeve 4 and place it in the arc surface of the upper end of the support block 2. Connect the locking ring 3 to both ends of the support block 2 with screws to fix the upper end of the positioning sleeve 4 and complete the fixation of the tail wing frame workpiece 18.

[0042] Step 3: Insert the connector 9 into the middle hole of the connecting plate 7, and fix it by inserting the shaft pin 11;

[0043] Step 4: Screw the fixing nut 10 onto the upper end of the connector 9, and insert the upper end of the connector 9 into the vertical mounting hole 14 at the lower end of the test machine pressure head 12. Then, insert the test machine pull rod 13 into the horizontal main insertion for fixation, so that the connector 9 is connected to the test machine pressure head 12. Rotate the fixing nut 10 in the opposite direction so that the fixing nut 10 contacts the lower section of the test machine pressure head 12. In this way, the connector 9 and the test machine pressure head 12 are stably connected without shaking.

[0044] Step 5: Start the electronic universal testing machine 17. The upper table of the electronic universal testing machine 17 drives the pressure block 8 to slowly press on the tail fin frame. The upper table of the electronic universal testing machine 17 continuously increases the pressure on the pressure block 8 and transmits the pressure to the tail fin frame.

[0045] Step 6: Continuously observe the pressure value of the electronic universal testing machine 17. When the pressure value of the electronic universal testing machine 17 is equal to or slightly greater than the working pressure of the tail fin, stop pressurizing and stabilize the pressure for the specified time. If the tail fin is visually inspected and found to be free of deformation or damage, the strength is qualified; otherwise, it is unqualified.

[0046] This technical solution can also perform failure strength testing on the tail fin support.

[0047] After step 5, when the pressure value rises to the working pressure of the tail fin, the pressure is increased slightly and continuously until the pressure value of the electronic universal testing machine 17 fluctuates. This instantaneous change is the failure strength value of the tail fin.

[0048] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A strength testing device for a tail fin support, characterized in that, include: Tail wing mounting fixing assembly, used to fix the tail wing mounting workpiece (18) during the inspection process; A tail fin inspection assembly is used to apply pressure to the tail fin workpiece (18) for inspection; The testing machine assembly connects to the tail fin test assembly, providing power and recording the pressure magnitude.

2. The strength testing device for the tail fin support according to claim 1, characterized in that, The tail wing frame fixing assembly includes a base plate (1), a locking assembly disposed above the base plate (1), and a positioning sleeve (4) disposed within the locking assembly. The tail wing frame workpiece (18) is sleeved on the positioning sleeve (4).

3. The strength testing device for the tail fin support according to claim 2, characterized in that, The locking assembly includes a support block (2) and a locking ring (3) disposed on the upper surfaces of the front and rear ends of the base plate (1). The upper end of the support block (2) is arc-shaped, and the positioning sleeve (4) is placed inside the arc at the upper end of the support block (2). The two ends of the locking ring (3) are connected to the left and right sides of the upper surface of the support block (2) for locking the positioning sleeve (4).

4. The strength testing device for the tail fin support according to claim 2, characterized in that, The bottom of the base plate (1) is provided with a positioning pin (5) for connecting with the test workbench.

5. The strength testing device for the tail fin support according to claim 2, characterized in that, The base plate (1) is provided with a fixing hole (6), which is fixedly connected to the test workbench by bolts.

6. The strength testing device for the tail fin support according to claim 1, characterized in that, The tail fin testing assembly includes a connecting plate (7), pressure blocks (8) disposed at the left and right ends of the connecting plate (7), and a connector (9) disposed in the middle of the connecting plate (7) for connecting with the testing machine assembly.

7. The strength testing device for the tail fin support according to claim 6, characterized in that, A fixing nut (10) is screwed onto the upper end of the connector (9) for fixing the connector (9) to the testing machine assembly.

8. The strength testing device for the tail fin support according to claim 6, characterized in that, The lower end of the connector (9) is inserted into the connecting plate (7) and fixed by a shaft pin (11).

9. The strength testing device for the tail fin support according to claim 6, characterized in that, The testing machine assembly includes a testing machine indenter (12) and a testing machine pull rod (13). The lower end of the testing machine indenter (12) is provided with a vertical mounting hole (14). The upper end of the testing machine indenter (12) is provided with a main insertion fixing hole (15). The upper end of the connector (9) is provided with an insertion fixing hole (16). The connector (9) is installed in the mounting hole (14) and inserted into the main insertion fixing hole (15) and the insertion fixing hole (16) through the testing machine pull rod (13) to complete the connection. The upper end of the testing machine indenter (12) is connected to the electronic universal testing machine (17).

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