A loading device for tail wing strength test

Abstract

The present invention discloses a loading device for tail strength test, and relates to the technical field of aircraft component strength detection. The present invention comprises a control box, a test bench is fixedly installed on the top of the control box, two transposition electric guide rails are fixedly installed on the top of the test bench, the top of each of the transposition electric guide rails is driven to install a transposition slide, the top of the two transposition slides is fixedly installed with the same transposition straight support plate, and the top of the transposition straight support plate is fixedly installed with two symmetrically arranged tooling electric guide rails. The present invention sets a loading assembly so that the moment loading hydraulic rod applies a static load to the moment loading plate, so that the moment loading plate has a tendency to rotate relative to the main loading plate, so that the horizontal tail to be tested is subjected to a pitch moment, simulating the action of the aircraft changing its flight state during climbing, level flight, gliding, etc., and the load effect on the horizontal tail to be tested, so that the horizontal tail to be tested is subjected to a more complex strength test, thereby ensuring the reliability of the test data.

Description

Technical Field

[0001] The invention relates to the technical field of aircraft component strength detection, and in particular to a loading device for a tail wing strength test. Background Art

[0002] The tail is a device installed at the rear of the aircraft for stability and control. It is generally divided into a vertical tail and a horizontal tail. The horizontal tail is referred to as the horizontal tail. It is the wing surface for longitudinal balance, stability and control of the aircraft. The aircraft may deviate from its original attitude due to various interferences (such as gusts in the atmosphere) during flight. The horizontal tail has the ability to restore the original attitude of the aircraft and plays a role in longitudinal stability of the aircraft. In the aircraft structural strength test, the tail needs to be subjected to a static load loading test separately to test the structural strength of the tail.

[0003] At present, when conducting structural strength tests on aircraft tails, a static loading device is usually used to directly select multiple loading areas on the aircraft tail and apply a static load of a certain magnitude. Then, by observing and measuring the deformation and strain state of the internal and external structures of the tail, the working condition of the tail under the specified load is obtained, thereby obtaining the design bearing capacity of the tail. However, this loading device loads vertically, which makes it difficult to provide a large pitch bending moment for the tail, resulting in an incomplete strength test of the tail. Therefore, a loading device for tail strength test is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the current tail wing loading device is loaded vertically, which makes it difficult to provide a large pitch bending moment for the tail wing, resulting in an incomplete strength test of the tail wing. The present invention provides a loading device for the tail wing strength test.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] A loading device for a tail strength test comprises a control box, a test bench is fixedly installed on the top of the control box, two transposition electric guide rails are fixedly installed on the top of the test bench, a transposition slide is driven to be installed on the top of the transposition electric guide rails, the top of the two transposition slides is fixedly installed with the same transposition straight support plate, the top of the transposition straight support plate is fixedly installed with two symmetrically arranged tooling electric guide rails, the tooling electric guide rails are perpendicular to the transposition electric guide rails, and the bottoms of the ends of the two tooling electric guide rails away from each other are fixedly installed with auxiliary brackets, the top of the test bench is fixedly installed with two auxiliary slide rails parallel to the transposition electric guide rails, the two auxiliary brackets are respectively slidably installed on the tops of the two auxiliary slide rails, the top of the tooling electric guide rails are driven to be installed with a tooling slide, the top of the tooling slide is fixedly installed with a tooling placement table, the top of the tooling placement table is fixedly installed with a clamping fixture, the same horizontal tail to be tested is placed between the two clamping fixtures, and a loading component is provided on one side of the control box;

[0007] The loading assembly is used to apply a static load in the vertical direction to the horizontal tail to be tested, and can apply a pitch bending moment to the horizontal tail to be tested;

[0008] The loading assembly includes a loading bracket arranged at one side of the control box, a main loading hydraulic rod arranged vertically is fixedly installed on one end of the top of the loading bracket, the main loading hydraulic rod is located at the top of the horizontal tail to be tested, a main reinforcement frame is fixedly installed on the telescopic end of the main loading hydraulic rod, a main loading plate is fixedly installed on the bottom of the main reinforcement frame, a moment loading plate is rotatably installed on one side of the main loading plate, a secondary reinforcement frame is fixedly installed on the top of the moment loading plate, a suspension frame is fixedly installed on one side of the top of the main reinforcement frame, a vertical moment loading hydraulic rod is fixedly installed on one end of the top of the suspension frame, two moment bearings are rotatably installed on the telescopic end of the moment loading hydraulic rod, and the two moment bearings are both slidably installed on the top of the secondary reinforcement frame, a plurality of parallel main suspension slide rails are fixedly installed on the bottom of the main loading plate and the moment loading plate, a plurality of suspension sliders are slidably installed inside the main suspension slide rails, and a loading pressure head is fixedly installed on the bottom of the suspension slider.

[0009] Furthermore, two arc-shaped reinforced telescopic rods are arranged on the top of the main reinforced frame and the secondary reinforced frame, and the two arc-shaped reinforced telescopic rods are distributed on both sides of the suspension frame, and the two ends of the arc-shaped reinforced telescopic rods are respectively fixedly installed on the top of the main reinforced frame and the secondary reinforced frame.

[0010] Furthermore, a plurality of evenly distributed main assembly holes are provided on both sides of the main suspension rail, and mounting threaded holes are provided on both sides of the suspension slider. The main assembly hole and the mounting threaded hole on the same side are provided with the same mounting bolt.

[0011] Furthermore, the bottom ends of the loading pressure heads are sleeved with rubber sleeves.

[0012] Furthermore, extension slide rails are provided at both ends of the main suspension slide rail, and a suspension plug rod is fixedly installed on the side of the extension slide rail close to the main suspension slide rail. One end of the suspension plug rod extends to the interior of the main suspension slide rail and is fixedly installed with a T-shaped clamping rod. Two threaded sleeves are fixedly installed on both sides of the main suspension slide rail, and the threaded sleeves are connected to the interior of the main suspension slide rail. Extension bolts are screwed into the interior of the threaded sleeves, and the extension bolts correspond to the positions of the T-shaped clamping rods. A plurality of evenly distributed extension assembly holes are opened on both sides of the extension slide rail.

[0013] Furthermore, a wind box is fixedly installed on one side of the control box, a test fan is fixedly installed on one side of the wind box, the test fan is connected to the interior of the wind box, two air supply pipes are fixedly installed on the top of the test bench, and directional air ducts are fixedly installed on the top of the air supply pipes, the two directional air ducts are distributed on both sides of the horizontal tail to be tested, and one end of the air supply pipes extends to the interior of the wind box.

[0014] Furthermore, two lifting electric push rods are fixedly installed on the top of the test bench, and a steering tube rack is fixedly installed on the top of the lifting electric push rods. The two directional air ducts are respectively fixedly installed on the top of the two steering tube racks.

[0015] Furthermore, a heater is fixedly installed on one side of the bellows, and a cooler is fixedly installed on the other side of the bellows.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The present invention sets a loading assembly so that the moment loading hydraulic rod applies a static load to the moment loading plate, so that the moment loading plate has a tendency to rotate relative to the main loading plate, so that the horizontal tail to be tested is subjected to a pitch moment, simulating the action of the aircraft changing its flight state such as climbing, level flight, and gliding, and the load effect on the horizontal tail to be tested, so that the horizontal tail to be tested is subjected to a more complex strength test, thereby ensuring the reliability of the test data;

[0018] 2. The present invention sets mounting bolts so that a corresponding number of loading pressure heads are selected, the suspension slider is connected to the main suspension slide rail in sequence, mounting bolts are placed on both sides of the main suspension slide rail, one end of the mounting bolt passes through the main assembly hole and is screwed into the mounting threaded hole to fix the suspension slider, so that the suspension slider can be quickly disassembled and installed, and the number of suspension sliders and loading pressure heads can be adjusted conveniently to meet the requirements of different experimental intensities;

[0019] 3. The present invention provides a rubber sleeve block so that the rubber sleeve block can be sleeved on the bottom end of the loading pressure head, and the rubber sleeve block replaces the loading pressure head to contact the upper surface of the horizontal tail to be tested. Therefore, by replacing the rubber sleeve block with different shapes, the shape and size of the contact surface between the rubber sleeve block and the horizontal tail to be tested can be changed, thereby adjusting the static load borne by the upper surface of the horizontal tail to be tested;

[0020] 4. The present invention provides an extended slide rail so that when testing a larger horizontal tail to be tested, an extended slide rail of a corresponding length can be selected and fixedly mounted on both ends of the main suspension slide rail. At this time, a corresponding number of suspension sliders and loading pressure heads can be installed at the bottom of the extended slide rail to extend the main suspension slide rail and increase the loading pressure head, which is convenient for strength testing of a large-sized horizontal tail to be tested.

[0021] 5. The present invention provides a test fan, so that during the strength test of the horizontal tail to be tested, the test fan can be driven to deliver strong wind to the wind box, so that the strong airflow passes through the air delivery pipe and the directional air pipe and blows toward the two sides of the horizontal tail to be tested in sequence, or the strength test is stopped and the wind force test is performed on the horizontal tail to be tested alone, so as to simulate the state of the horizontal tail to be tested being affected by the strong airflow during the flight of the aircraft, thereby increasing the complexity of the strength test;

[0022] 6. The present invention sets a lifting electric push rod and a steering tube rack so that the lifting electric push rod and the steering tube rack can cooperate with each other, so that the two directional air ducts are respectively located at the top and bottom of the horizontal tail to be tested and blow strong oblique airflow to the horizontal tail to be tested, simulating the stress state of the horizontal tail to be tested when the aircraft is climbing, flying level and descending, so that the detection data of the strength test can be closer to the actual situation;

[0023] 7. The present invention sets a heater and a cooler so that the heater can heat the air inside the bellows and the cooler can cool the air inside the bellows, so that the heater and the cooler change the air temperature inside the bellows in turn, so that the test fan alternately avoids conveying cold and hot air flows to the horizontal tail to be tested, simulates the temperature change of the horizontal tail to be tested when the aircraft is flying at high altitude, and tests the strength change of the horizontal tail to be tested under large temperature difference conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle;

[0025] Figure 2 is a schematic diagram of a three-dimensional structure from a second viewing angle of the present invention;

[0026] Figure 3 It is a schematic diagram of the top three-dimensional structure of the test bench of the present invention;

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of the electric guide rail of the tooling and the horizontal tail to be tested;

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the loading assembly of the present invention;

[0029] Figure 6 It is a schematic diagram of the three-dimensional structure of the main loading plate and the moment loading plate of the present invention;

[0030] Figure 7 It is a schematic diagram of the three-dimensional structure of the main suspension slide rail and the extended slide rail of the present invention;

[0031] Figure 8 It is a schematic diagram of the internal three-dimensional structure of the main suspension slide rail of the present invention;

[0032] Figure numerals: 1, control box; 2, test bench; 3, transposition electric guide rail; 4, transposition slide; 5, transposition straight support plate; 6, tooling electric guide rail; 7, auxiliary bracket; 8, auxiliary slide rail; 9, tooling slide; 10, tooling placement table; 11, clamping tool; 12, horizontal tail to be tested; 13, loading bracket; 14, main loading hydraulic rod; 15, main reinforcement frame; 16, main loading plate; 17, moment loading plate; 18, auxiliary reinforcement frame; 19, suspension frame; 20, moment loading hydraulic rod; 21, moment support; 2 2. Main suspension rail; 23. Suspension slider; 24. Loading pressure head; 25. Arc-shaped reinforced telescopic rod; 26. Main assembly hole; 27. Mounting threaded hole; 28. Mounting bolt; 29. ​​Rubber sleeve; 30. Extension rail; 31. Suspension plug rod; 32. T-shaped clamp rod; 33. Threaded sleeve; 34. Extension bolt; 35. Extension assembly hole; 36. Bellows; 37. Test fan; 38. Air duct; 39. Directional air duct; 40. Lifting electric push rod; 41. Steering tube rack; 42. Heater; 43. Cooler. DETAILED DESCRIPTION

[0033] 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.

[0034] 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.

[0035] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0036] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product 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.

[0037] like Figures 1 to 8 As shown, a loading device for tail wing strength test includes a control box 1, as shown in Figure 1 As shown, a test bench 2 is fixedly installed on the top of the control box 1. Figure 2 As shown, two transposition electric guide rails 3 are fixedly installed on the top of the test bench 2, and a transposition slide 4 is driven and installed on the top of the transposition electric guide rails 3. The same transposition straight support plate 5 is fixedly installed on the top of the two transposition slides 4. Two symmetrically arranged tooling electric guide rails 6 are fixedly installed on the top of the transposition straight support plate 5. The tooling electric guide rails 6 are perpendicular to the transposition electric guide rails 3. Auxiliary brackets 7 are fixedly installed on the bottom of the ends of the two tooling electric guide rails 6 that are away from each other. Two auxiliary slide rails 8 parallel to the transposition electric guide rails 3 are fixedly installed on the top of the test bench 2. The two auxiliary brackets 7 are slidably installed on the top of the two auxiliary slide rails 8, respectively, as shown in FIG. Figure 4As shown, the top of the tooling electric guide rail 6 is driven to install a tooling slide 9, the top of the tooling slide 9 is fixedly installed with a tooling placement table 10, the top of the tooling placement table 10 is fixedly installed with a clamping tool 11, and the same horizontal tail 12 to be tested is placed between the two clamping tools 11. In this embodiment, the top of the tooling placement table 10 is provided with a plurality of evenly distributed threaded holes, and the clamping tool 11 is fixed to the top of the tooling placement table 10 by bolts. The shape of the top of the clamping tool 11 corresponds to the shape of the horizontal tail 12 to be tested, and a loading component is provided on one side of the control box 1; specifically, the loading device of the tail strength test When the device is in use, first select a set of clamping fixtures 11 corresponding to the shape of the horizontal tail 12 to be tested, and symmetrically screw-fix them on the top of the two fixture placement platforms 10, and the two fixture electric guide rails 6 respectively drive the two fixture slides 9 to approach each other, so that the spacing between the fixture slides 9 is slightly larger than the length of the horizontal tail 12 to be tested, and then put the horizontal tail 12 to be tested between the two clamping fixtures 11, and the fixture electric guide rail 6 drives the fixture slide 9 to continue to move a short distance to clamp and fix the horizontal tail 12 to be tested. At this time, the transposition electric guide rail 3 drives the transposition slide 4 to carry the transposition straight support plate 5 to move in a straight line, so that the horizontal tail 12 to be tested moves to the bottom of the loading assembly;

[0038] The loading assembly is used to apply a static load in the vertical direction to the horizontal tail 12 to be tested, and can apply a pitch bending moment to the horizontal tail 12 to be tested;

[0039] like Figure 1 , Figure 5 As shown, the loading assembly includes a loading bracket 13 disposed on one side of the control box 1, and a vertically arranged main loading hydraulic rod 14 is fixedly installed at one end of the top of the loading bracket 13. The main loading hydraulic rod 14 is located at the top of the horizontal tail 12 to be tested, as shown in FIG. Figure 6 As shown, the telescopic end of the main loading hydraulic rod 14 is fixedly installed with a main reinforcement frame 15, the bottom of the main reinforcement frame 15 is fixedly installed with a main loading plate 16, one side of the main loading plate 16 is rotatably installed with a bending moment loading plate 17, the top of the bending moment loading plate 17 is fixedly installed with a secondary reinforcement frame 18, one side of the top of the main reinforcement frame 15 is fixedly installed with a suspension frame 19, and one end of the top of the suspension frame 19 is fixedly installed with a vertically arranged bending moment loading hydraulic rod 20, and the telescopic end of the bending moment loading hydraulic rod 20 is rotatably installed with two bending moment supports 21, and the two bending moment supports 21 are both slidably installed on the top of the secondary reinforcement frame 18, as shown in FIG. Figure 7As shown, the bottom of the main loading plate 16 and the moment loading plate 17 are fixedly installed with a plurality of parallel main suspension rails 22, and the interior of the main suspension rails 22 is slidably installed with a plurality of suspension sliders 23, and the bottom of the suspension sliders 23 are fixedly installed with loading pressure heads 24; specifically, by setting the loading assembly, after the horizontal tail 12 to be tested is fixed, the main loading hydraulic rod 14 drives the main reinforcement frame 15 to carry the main loading plate 16 to press down, so that the main loading plate 16 and the plurality of loading pressure heads 24 at the bottom of the moment loading plate 17 are pressed on the top of the horizontal tail 12 to be tested, and a static load in the vertical direction is applied to the horizontal tail 12 to perform the first round of strength test on the horizontal tail 12 to be tested, and then the main loading hydraulic rod 14 retracts the main loading plate 16, and the transposition electric guide rail 3 drives the transposition slide 4 to continue to move a distance, so that the horizontal tail 12 to be tested is fixed. The tail 12 is located at the bottom of the moment loading plate 17. At this time, the main loading hydraulic rod 14 drives the main loading plate 16 to descend, so that the loading pressure head 24 at the bottom of the moment loading plate 17 contacts the upper surface of the horizontal tail 12 to be tested. The main loading hydraulic rod 14 stops moving, and the moment loading hydraulic rod 20 applies a static load to the moment loading plate 17 through the moment support 21 and the secondary reinforcement frame 18, so that the moment loading plate 17 has a tendency to rotate relative to the main loading plate 16, so that the horizontal tail 12 to be tested is subjected to a pitching moment, simulating the action of the aircraft changing its flight state such as climbing, level flight, and descending, and the load effect on the horizontal tail 12 to be tested, so that the horizontal tail 12 to be tested is subjected to a more complex strength test, thereby ensuring the reliability of the test data. After the first round of tests, the position of the horizontal tail 12 to be tested can be exchanged to start the second round of tests.

[0040] like Figure 6 As shown, two arc-shaped reinforced telescopic rods 25 are arranged on the top of the main reinforcement frame 15 and the secondary reinforcement frame 18, and the two arc-shaped reinforced telescopic rods 25 are distributed on both sides of the suspension frame 19. The two ends of the arc-shaped reinforced telescopic rods 25 are respectively fixedly installed on the top of the main reinforcement frame 15 and the secondary reinforcement frame 18. In this embodiment, the main loading plate 16 and the bending moment loading plate 17 are rotatably connected by a hinge, and the arc-shaped reinforced telescopic rod 25 is consistent with the axis of the hinge; specifically, by arranging the arc-shaped reinforced telescopic rod 25, the two arc-shaped reinforced telescopic rods 25 are arranged on the top of the main reinforcement frame 15 and the secondary reinforcement frame 18, so that the telescopic end of the arc-shaped reinforced telescopic rod 25 has the same rotation tendency as the control box 1, thereby improving the rotation connection strength between the main loading plate 16 and the bending moment loading plate 17.

[0041] like Figure 7 As shown, both sides of the main suspension rail 22 are provided with a plurality of evenly distributed main assembly holes 26. Figure 8As shown, mounting threaded holes 27 are provided on both sides of the suspension slide 23, and the same mounting bolt 28 is provided inside the main assembly hole 26 and the mounting threaded hole 27 located on the same side; specifically, by providing the mounting bolt 28, before the test, a corresponding number of loading pressure heads 24 can be selected according to the size of the horizontal tail 12 to be tested and the strength of the test, and then multiple suspension slides 23 are slid into the main suspension slide rail 22 in sequence, and the mounting threaded holes 27 on the suspension slide 23 are kept consistent with the positions of the main assembly holes 26 on the main suspension slide rail 22, and finally, mounting bolts 28 are placed on both sides of the main suspension slide rail 22, so that one end of the mounting bolt 28 passes through the main assembly hole 26 and is screwed into the mounting threaded hole 27, and the suspension slide 23 and the loading pressure head 24 are fixed, so that the suspension slide 23 can be quickly disassembled and installed, and the number of suspension slides 23 and loading pressure heads 24 can be adjusted conveniently to meet the requirements of different experimental intensities.

[0042] like Figure 7 As shown, the bottom end of the loading pressure head 24 is sleeved with a rubber sleeve 29; specifically, by providing the rubber sleeve 29, the rubber sleeve 29 can be sleeved on the bottom end of the loading pressure head 24, and a leather hammer is used to gently tap the bottom of the rubber sleeve 29, so that the rubber sleeve 29 and the loading pressure head 24 are more tightly connected and will not fall off easily. The rubber sleeve 29 replaces the loading pressure head 24 to contact the upper surface of the horizontal stabilizer 12 to be tested, so that the shape and size of the contact surface between the rubber sleeve 29 and the horizontal stabilizer 12 to be tested can be changed by replacing the rubber sleeve 29 with different shapes, so as to adjust the static load borne by the upper surface of the horizontal stabilizer 12 to be tested.

[0043] like Figure 7 As shown, both ends of the main suspension rail 22 are provided with extended rails 30. Figure 8As shown, a suspension plug rod 31 is fixedly installed on one side of the extended slide rail 30 close to the main suspension slide rail 22, one end of the suspension plug rod 31 extends to the interior of the main suspension slide rail 22 and is fixedly installed with a T-shaped clamping rod 32, and two threaded sleeves 33 are fixedly installed on both sides of the main suspension slide rail 22, and the threaded sleeves 33 are communicated with the interior of the main suspension slide rail 22, and the interior of the threaded sleeves 33 are screwed with extension bolts 34, and the extension bolts 34 correspond to the positions of the T-shaped clamping rod 32, and a plurality of evenly distributed extension assembly holes 35 are opened on both sides of the extended slide rail 30. In the present embodiment, the number of extension assembly holes 35 on the extended slide rail 30 corresponds to the length of the extended slide rail 30; specifically, by setting the extended slide rail 30, when a larger horizontal tail 12 to be tested is tested When conducting the test, an extension rail 30 of corresponding length can be selected and placed at both ends of the main suspension rail 22 in turn, so that the suspension rod 31 at one end of the extension rail 30 is inserted into the interior of the main suspension rail 22, so that the two T-shaped clamping rods 32 are symmetrical and close to each other, and then the extension bolt 34 is screwed into the threaded sleeve 33 in turn, so that one end of the extension bolt 34 is inserted into the gap between the T-shaped clamping rod 32 and the suspension rod 31, thereby locking the T-shaped clamping rod 32, so that the extension rail 30 is fixedly installed at both ends of the main suspension rail 22. At this time, a corresponding number of suspension sliders 23 and loading pressure heads 24 can be installed at the bottom of the extension rail 30 to achieve the extension of the main suspension rail 22 and the increase of the loading pressure head 24, which is convenient for strength testing of large-sized horizontal tail 12 to be tested.

[0044] like Figure 1 As shown, a wind box 36 is fixedly installed on one side of the control box 1, and a test fan 37 is fixedly installed on one side of the wind box 36. The test fan 37 is connected to the inside of the wind box 36. Two air supply pipes 38 are fixedly installed on the top of the test bench 2. Figure 3 As shown, the top of the air duct 38 is fixedly installed with a directional air duct 39, and the two directional air ducts 39 are distributed on both sides of the horizontal tail 12 to be tested. One end of the air duct 38 extends to the inside of the air box 36. In this embodiment, the air duct 38 is an elastically deformable hose; specifically, by arranging a test fan 37, during the strength test of the horizontal tail 12 to be tested, the test fan 37 can be driven to deliver strong wind to the air box 36, so that the strong airflow passes through the air duct 38 and the directional air duct 39 and blows toward the two sides of the horizontal tail 12 to be tested in turn, or the strength test is stopped, and the wind force test is performed on the horizontal tail 12 to be tested separately, simulating the state of the horizontal tail 12 to be tested being subjected to strong airflow during the flight of the aircraft, thereby increasing the complexity of the strength test.

[0045] like Figure 3As shown, two lifting electric push rods 40 are fixedly installed on the top of the test bench 2, and a steering tube frame 41 is fixedly installed on the top of the lifting electric push rods 40. Two directional air ducts 39 are respectively fixedly installed on the tops of the two steering tube frames 41. In this embodiment, the steering tube frame 41 includes a bracket, a steering shaft and a steering motor. The two steering shafts are rotatably installed on the bracket, and the directional air duct 39 is fixedly installed between the two steering shafts. The steering motor is drivingly connected to one of the steering shafts; specifically, by arranging the lifting electric push rods 40 and the steering tube frame 41, when the test fan 37 transports a strong airflow to both sides of the horizontal tail 12 to be tested through the air supply pipe 38 and the directional air duct 39, the lifting electric push rods 40 and the steering tube frame 41 can cooperate with each other, so that the two directional air ducts 39 are respectively located at the top and bottom of the horizontal tail 12 to be tested and blow oblique strong airflow to the horizontal tail 12 to be tested, simulating the stress state of the horizontal tail 12 to be tested when the aircraft is climbing, level flying, and descending, so that the detection data of the strength test can be closer to the actual situation.

[0046] like Figure 1 As shown, a heater 42 is fixedly mounted on one side of the wind box 36. Figure 2 As shown, a cooler 43 is fixedly installed on the other side of the bellows 36. In this embodiment, the heater 42 can be a common electric heating device on the market, and the cooler 43 can be a small liquid cooling device, or a small liquid nitrogen cooling device. Specifically, by arranging the heater 42 and the cooler 43, the heater 42 can heat the air inside the bellows 36, and the cooler 43 can cool the air inside the bellows 36, so that the heater 42 and the cooler 43 change the air temperature inside the bellows 36 in turn, so that the test fan 37 alternately avoids conveying cold and hot airflows to the horizontal tail 12 to be tested, so as to simulate the temperature change of the horizontal tail 12 to be tested when the aircraft is flying at high altitude, and test the strength change of the horizontal tail 12 to be tested under large temperature difference conditions.

[0047] In summary: before the test: first select a set of clamping fixtures 11 corresponding to the shape of the horizontal tail 12 to be tested, and symmetrically screw them on the top of the two fixture placement platforms 10, and the two fixture electric guide rails 6 respectively drive the two fixture slides 9 to move closer to each other, so that the distance between the fixture slides 9 is slightly larger than the length of the horizontal tail 12 to be tested, and then put the horizontal tail 12 to be tested between the two clamping fixtures 11, and the fixture electric guide rail 6 drives the fixture slide 9 to continue to move a short distance to clamp and fix the horizontal tail 12 to be tested. At this time, the transposition electric guide rail 3 drives the transposition slide 4 to carry The straight support plate 5 is replaced and moved linearly, so that the horizontal tail 12 to be tested is moved to the bottom of the loading assembly. According to the size of the horizontal tail 12 to be tested and the strength of the test, a corresponding number of loading pressure heads 24 are selected, and then a plurality of suspension slide blocks 23 are slid into the main suspension slide rail 22 in sequence, and the mounting threaded holes 27 on the suspension slide blocks 23 are kept consistent with the positions of the main assembly holes 26 on the main suspension slide rail 22. Finally, mounting bolts 28 are placed on both sides of the main suspension slide rail 22, and one end of the mounting bolts 28 passes through the main assembly holes 26 and is screwed in. Insert the mounting threaded hole 27, fix the suspension slider 23 and the loading head 24, sleeve a rubber sleeve 29 of a specified shape and size on the bottom end of the loading head 24, and use a leather hammer to gently tap the bottom of the rubber sleeve 29, so that the rubber sleeve 29 and the loading head 24 are more tightly connected and will not fall off easily. When testing a larger horizontal tail 12 to be tested, an extension rail 30 of a corresponding length can be selected, and the extension rail 30 can be placed at both ends of the main suspension rail 22 in sequence, so that the suspension plug rod at one end of the extension rail 30 The extension rail 30 is fixedly mounted on both ends of the main suspension rail 22. At this time, a corresponding number of suspension sliders 23 and loading pressure heads 24 can be installed at the bottom of the extension rail 30 to extend the main suspension rail 22 and increase the loading pressure heads 24.

[0048] During the test: after the horizontal stabilizer 12 to be tested is fixed, the main loading hydraulic rod 14 drives the main reinforcement frame 15 to carry the main loading plate 16 to press down, so that the main loading plate 16 and the multiple loading pressure heads 24 at the bottom of the moment loading plate 17 are pressed on the top of the horizontal stabilizer 12 to be tested, and a static load in the vertical direction is applied to the horizontal stabilizer 12 to be tested. The first round of strength test is performed on the horizontal stabilizer 12 to be tested, and then the main loading hydraulic rod 14 retracts the main loading plate 16, and the transposition electric guide rail 3 drives the transposition slide 4 to continue to move a distance, so that the horizontal stabilizer 12 to be tested is located at the bottom of the moment loading plate 17. At this time, the main loading hydraulic rod 14 The main loading plate 16 is driven down, so that the loading pressure head 24 at the bottom of the moment loading plate 17 contacts the upper surface of the horizontal tail 12 to be tested, and the main loading hydraulic rod 14 stops moving. The moment loading hydraulic rod 20 applies a static load to the moment loading plate 17 through the moment support 21 and the secondary reinforcement frame 18, so that the moment loading plate 17 has a tendency to rotate relative to the main loading plate 16, so that the horizontal tail 12 to be tested is subjected to a pitching moment, simulating the action of the aircraft changing its flight state such as climbing, level flight, and descending, and the load effect on the horizontal tail 12 to be tested, so that the horizontal tail 12 to be tested is subjected to a more complex strength test During the strength test of the horizontal tail 12 to be tested, the test fan 37 drives the wind box 36 to deliver strong wind, so that the strong airflow passes through the air delivery pipe 38 and the directional air pipe 39 and blows toward the two sides of the horizontal tail 12 to be tested in sequence, or the strength test is stopped, and the wind force test is performed on the horizontal tail 12 to be tested alone, simulating the state of the horizontal tail 12 to be tested being affected by the strong airflow during the flight of the aircraft. The lifting electric push rod 40 and the steering tube frame 41 can cooperate with each other, so that the two directional air pipes 39 are respectively located at the top and bottom of the horizontal tail 12 to be tested and blow oblique strong airflow to the horizontal tail 12 to be tested. The stress state of the horizontal tail 12 to be tested is simulated when the aircraft is climbing, flying level, and descending, so that the detection data of the strength test can be closer to the actual situation. The heater 42 can heat the air inside the wind box 36, and the cooler 43 can cool the air inside the wind box 36. The heater 42 and the cooler 43 can change the air temperature inside the wind box 36 in turn, so that the test fan 37 can avoid conveying cold and hot air flows to the horizontal tail 12 to be tested alternately, simulating the temperature change of the horizontal tail 12 to be tested when the aircraft is flying at high altitude, and testing the strength change of the horizontal tail 12 to be tested under the condition of large temperature difference;

[0049] After the test: After the first round of tests, the position of the horizontal tail 12 to be tested can be changed to start the second round of tests.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A loading device for tail wing strength test, characterized in that: The invention comprises a control box (1), a test bench (2) is fixedly installed on the top of the control box (1), two transposition electric guide rails (3) are fixedly installed on the top of the test bench (2), a transposition slide (4) is driven and installed on the top of each of the transposition electric guide rails (3), a same transposition straight support plate (5) is fixedly installed on the top of the two transposition slides (4), two symmetrically arranged tooling electric guide rails (6) are fixedly installed on the top of the transposition straight support plate (5), the tooling electric guide rails (6) are perpendicular to the transposition electric guide rails (3), and auxiliary guide rails are fixedly installed on the bottom of the ends of the two tooling electric guide rails (6) that are away from each other. The test bench (2) comprises a bracket (7), two auxiliary slide rails (8) parallel to the transposition electric guide rail (3) are fixedly installed on the top of the test bench (2), the two auxiliary brackets (7) are slidably installed on the top of the two auxiliary slide rails (8), the top of the tooling electric guide rail (6) is driven to be installed with a tooling slide (9), the top of the tooling slide (9) is fixedly installed with a tooling placement table (10), the top of the tooling placement table (10) is fixedly installed with a clamping tool (11), the same horizontal tail (12) to be tested is placed between the two clamping tools (11), and a loading component is arranged on one side of the control box (1); The loading assembly is used to apply a static load in a vertical direction to the horizontal tail (12) to be tested, and can apply a pitch bending moment to the horizontal tail (12) to be tested; The loading assembly comprises a loading bracket (13) arranged on one side of the control box (1), a main loading hydraulic rod (14) arranged vertically is fixedly installed on one end of the top of the loading bracket (13), the main loading hydraulic rod (14) is located on the top of the horizontal tail (12) to be tested, a main reinforcement frame (15) is fixedly installed on the telescopic end of the main loading hydraulic rod (14), a main loading plate (16) is fixedly installed on the bottom of the main reinforcement frame (15), a moment loading plate (17) is rotatably installed on one side of the main loading plate (16), a secondary reinforcement frame (18) is fixedly installed on the top of the moment loading plate (17), and the top of the main reinforcement frame (15) is fixedly mounted on the main loading plate (17). A suspension frame (19) is fixedly installed on one side, and a vertically arranged bending moment loading hydraulic rod (20) is fixedly installed on one end of the top of the suspension frame (19). Two bending moment supports (21) are rotatably installed on the telescopic end of the bending moment loading hydraulic rod (20). Both of the two bending moment supports (21) are slidably installed on the top of the auxiliary reinforcement frame (18). A plurality of parallel main suspension slide rails (22) are fixedly installed on the bottom of the main loading plate (16) and the bending moment loading plate (17). A plurality of suspension sliders (23) are slidably installed inside the main suspension slide rails (22), and a loading pressure head (24) is fixedly installed on the bottom of each of the suspension sliders (23).

2. A loading device for tail wing strength test according to claim 1, characterized in that: Two arc-shaped reinforcing telescopic rods (25) are arranged on the top of the main reinforcing frame (15) and the secondary reinforcing frame (18), and the two arc-shaped reinforcing telescopic rods (25) are distributed on both sides of the suspension frame (19), and the two ends of the arc-shaped reinforcing telescopic rods (25) are respectively fixedly mounted on the top of the main reinforcing frame (15) and the secondary reinforcing frame (18).

3. A loading device for tail wing strength test according to claim 1, characterized in that: A plurality of evenly distributed main assembly holes (26) are provided on both sides of the main suspension rail (22), and mounting threaded holes (27) are provided on both sides of the suspension slider (23). The main assembly hole (26) and the mounting threaded hole (27) located on the same side are provided with the same mounting bolt (28) inside.

4. A loading device for tail wing strength test according to claim 1, characterized in that: The bottom ends of the loading pressure heads (24) are sleeved with rubber sleeve blocks (29).

5. The loading device for tail wing strength test according to claim 1, characterized in that: Extension rails (30) are provided at both ends of the main suspension rail (22), and a suspension rod (31) is fixedly installed on one side of the extension rail (30) close to the main suspension rail (22). One end of the suspension rod (31) extends to the interior of the main suspension rail (22) and is fixedly installed with a T-shaped clamping rod (32). Two threaded sleeves (33) are fixedly installed on both sides of the main suspension rail (22), and the threaded sleeves (33) are connected to the interior of the main suspension rail (22). Extension bolts (34) are screwed inside the threaded sleeves (33), and the extension bolts (34) correspond to the positions of the T-shaped clamping rod (32). A plurality of evenly distributed extension assembly holes (35) are opened on both sides of the extension rail (30).

6. A loading device for tail wing strength test according to claim 1, characterized in that: A wind box (36) is fixedly mounted on one side of the control box (1), a test fan (37) is fixedly mounted on one side of the wind box (36), and the test fan (37) is communicated with the interior of the wind box (36). Two air supply pipes (38) are fixedly mounted on the top of the test bench (2), and a directional air duct (39) is fixedly mounted on the top of each of the air supply pipes (38). The two directional air ducts (39) are distributed on both sides of the horizontal tail (12) to be tested, and one end of each of the air supply pipes (38) extends to the interior of the wind box (36).

7. A loading device for tail wing strength test according to claim 6, characterized in that: Two lifting electric push rods (40) are fixedly installed on the top of the test bench (2), and a steering tube frame (41) is fixedly installed on the top of the lifting electric push rod (40). The two directional air ducts (39) are respectively fixedly installed on the top of the two steering tube frames (41).

8. The loading device for tail wing strength test according to claim 6, characterized in that: A heater (42) is fixedly mounted on one side of the wind box (36), and a cooler (43) is fixedly mounted on the other side of the wind box (36).

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