A bidirectional follow-up loading test device suitable for linear transmission mechanisms

Abstract

The present invention relates to a bidirectional follow-up loading test device suitable for a linear transmission mechanism, belonging to the field of aerospace equipment; comprising a test stand, an upper guide assembly, a linear transmission member, an upper lateral loading device, a vertical loading device, a lower guide assembly, a lower lateral loading device, a locking device and a test piece; by applying loads in a bidirectional coupling in the lateral and vertical directions, the nonlinear and discontinuous aerodynamic load conditions of a telescopic wing driven by a linear transmission mechanism can be equivalently simulated, and separate lateral and vertical loading functions can also be realized; by the combined guide of the upper and lower layers and the joint loading of two electric cylinders, the support stiffness of the test device is improved, and the redundant vertical force of the test device is eliminated; the device has the function of locking the test piece at a specified position, and can be used for testing the stalling ability of the test piece at multiple positions.

Description

Technical Field

[0001] The invention belongs to the field of aerospace equipment and relates to a bidirectional follow-up loading test device suitable for a linear transmission mechanism. Background Art

[0002] Deformable aircraft is a hot topic in the current field of aerospace research. Its advantage lies in the fact that the aircraft can achieve cross-domain flight by changing the shape of the wing surface during flight. The telescopic wing driven by a linear transmission mechanism is a more conventional deformation form in current deformable aircraft. Deformable aircraft will be subjected to various complex external loads during flight. In order to improve the reliability of the deformable drive mechanism and expose the weak links in advance, it is necessary to carry out flight load simulation loading tests on the deformable drive mechanism on the ground. At present, wind tunnel tests and flight tests on wing surfaces can effectively test the external load bearing capacity of the deformable drive mechanism, but there are problems such as high test cost, long test cycle, and high risk. Therefore, it is of great significance to design a bidirectional follow-up loading test device suitable for linear transmission mechanisms.

[0003] After investigation, the existing follow-up loading solutions for morphing wing drive mechanisms mainly include active follow-up loading and passive follow-up loading:

[0004] Passive dynamic loading solutions, such as those described in Chinese patent CN118701303A, titled "A Morphing Wing Passive Dynamic Loading Device and Working Method," consist of a support frame, a test wing bracket, a test wing, a high-pressure cylinder assembly, and multiple passive loading modules. This solution requires manual adjustment of wire rope tension to achieve fixed-value loading, making it difficult to simulate variable-load flight loads and unable to simultaneously achieve dynamic loading of the telescopic wing in both the horizontal and vertical directions.

[0005] Active servo loading solutions, such as Chinese patent CN118723111A, titled "A Multi-stage Telescopic Wing Servo Loading Device for Simulating Uniformly Distributed Aerodynamic Loads," consist of a load platform, a test wing surface, and several force-applying devices. The force-applying devices in this solution are complex in structure, feature numerous mounting interfaces with the test object, and require multiple electric cylinders to work together to achieve servo loading of the test object, making it impossible to apply loads in two directions simultaneously. Summary of the Invention

[0006] The technical problem solved by the present invention is to overcome the shortcomings of the existing technology and propose a bidirectional follow-up loading test device suitable for a linear transmission mechanism, which has the comprehensive functions of simultaneously applying bidirectional follow-up loading, applying lateral follow-up loading separately and applying axial load separately.

[0007] The solution of the present invention is:

[0008] A bidirectional follow-up loading test device suitable for a linear transmission mechanism, comprising a test stand, an upper guide assembly, a linear transmission member, an upper lateral loading device, a vertical loading device, a lower guide assembly, a lower lateral loading device, a locking device, and a test piece;

[0009] The test bench is a horizontally placed L-shaped frame; the test bench includes a bottom plate and a vertical plate; the test piece is arranged axially perpendicular to the vertical plate, and the fixed end of the test piece is fixedly connected to the vertical plate; the fixed end of the upper guide assembly is fixedly connected to the side wall of the vertical plate; the linear transmission member is horizontally installed on the telescopic end of the upper guide assembly; the telescopic end of the test piece is fixedly connected to the linear transmission member; the upper lateral loading device is arranged horizontally, and the fixed end of the upper lateral loading device is fixedly connected to the vertical plate, and the telescopic end of the upper lateral loading device is fixedly connected to the linear transmission member; the upper lateral loading device drives the linear transmission member to translate on the upper guide assembly to realize resistance loading during the telescopic process of the test piece;

[0010] The vertical loading device is axially arranged vertically; the top of the vertical loading device is fixedly connected to the bottom of the linear transmission member and the upper lateral loading device; the lower guide assembly is arranged on the upper surface of the base plate; the lower lateral loading device is axially arranged in parallel with the upper lateral loading device, and the fixed end of the lower lateral loading device is fixedly connected to the vertical plate; the telescopic end of the lower lateral loading device is connected to the lower guide assembly; the bottom end of the vertical loading device is connected to the lower lateral loading device; through the synchronous telescopic movement of the upper lateral loading device and the lower lateral loading device, the vertical loading device is always perpendicular to the linear transmission member; the vertical loading of the linear transmission member, that is, the vertical loading of the test piece, is realized by the vertical loading device; the locking device is installed on the side wall of the linear transmission member.

[0011] In the above-mentioned bidirectional follow-up loading test device suitable for a linear transmission mechanism, the surface of the base plate is designed with a mounting surface with two threaded holes; the surface of the vertical plate is designed with a mounting surface with four threaded holes, a mounting surface with six threaded holes, a mounting surface with six threaded holes, a mounting surface with four threaded holes, and a mounting surface with four threaded holes.

[0012] In the above-mentioned bidirectional follow-up loading test device suitable for a linear transmission mechanism, the upper guide assembly includes two slide rail assemblies; the two slide rail assemblies are horizontally and symmetrically installed on the vertical plate; the slide rail assembly includes a slide rail and a slider; the slide rail is axially perpendicular to the vertical plate; the slider is arranged on the slide rail to realize the sliding of the slider relative to the slide rail; a plurality of slide rail locking holes are provided on the side wall surface of the slide rail; the upper surface of the slider is a mounting surface with four threaded holes; and a slider locking hole is provided at the center of the side wall surface of the slider.

[0013] In the above-mentioned bidirectional follow-up loading test device applicable to a linear transmission mechanism, the linear transmission member includes a support frame, a lower support ear seat, a motion flange and a locking mounting surface;

[0014] Among them, the lower support ear seat is connected to the bottom surface of the support frame; two threaded holes are provided on the moving flange for fastening the telescopic end of the test piece; the locking mounting surface is arranged on the side wall of the support frame for installing the locking device.

[0015] In the above-mentioned bidirectional follow-up loading test device for a linear transmission mechanism, the upper lateral loading device includes a mounting flange, an electric cylinder, a telescopic rod, a force sensor, a screw and an upper lug;

[0016] Among them, the mounting flange is fixedly installed on the vertical plate; the electric cylinder provides driving force to drive the telescopic rod to freely extend and retract; one end of the force sensor is connected to the telescopic rod; the other end of the force sensor is connected to the upper support ear through four screws.

[0017] In the above-mentioned bidirectional follow-up loading test device applicable to a linear transmission mechanism, the vertical loading device includes a lower support lug, an electric cylinder, a telescopic rod and a force sensor;

[0018] The lower support ear is connected to the lower guide assembly; the electric cylinder is vertically arranged on the top of the lower support ear; the telescopic rod is coaxially connected to the output end of the top of the electric cylinder; the telescopic rod is driven to freely extend and retract by the electric cylinder; and the force sensor is installed on the top of the telescopic rod.

[0019] The lower guide assembly includes a slider and a slide rail; the slide rail is installed on the upper surface of the base plate; the slider and the slide rail slide together; the upper surface of the slider has two threaded holes for connecting the lower guide assembly with the lower lateral loading device; the two ends of the slide rail have two mounting holes for connecting the lower guide assembly with the stand.

[0020] In the above-mentioned bidirectional follow-up loading test device for a linear transmission mechanism, the lower lateral loading device includes a mounting flange, an electric cylinder, a telescopic rod, a force sensor, a screw and a lower lug;

[0021] The mounting flange plays a role in fixing the installation; the electric cylinder is axially installed horizontally on the mounting flange; the telescopic rod is coaxially connected to the electric cylinder; the electric cylinder provides driving force to drive the telescopic rod to freely extend and retract; one end of the force sensor is connected to the telescopic rod, and the other end of the force sensor is connected to the lower lug through four screws; the lower lug is installed on the slider through two mounting holes; and the lower lug seat is connected to the lower lug.

[0022] In the above-mentioned bidirectional follow-up loading test device suitable for a linear transmission mechanism, the locking device includes an electric telescopic cylinder, a fixed flange, a telescopic rod and a locking pin; the electric telescopic cylinder is responsible for providing driving force to drive the telescopic rod to achieve telescopic movement; the fixed flange is used to fix the locking device on the linear transmission member; the locking pin is fixedly connected to the telescopic rod; the telescopic rod drives the locking pin to extend and retract in the locking hole of the slider and the locking hole of the slide rail.

[0023] In the above-mentioned bidirectional follow-up loading test device suitable for a linear transmission mechanism, the test piece includes an electric telescopic cylinder, a fixed flange, a telescopic rod and a movable flange; the electric telescopic cylinder provides a driving force to drive the telescopic rod to achieve telescopic movement; the fixed flange is used to fix the test piece on the stand; the movable flange is fixedly connected to the telescopic rod for connecting to the linear transmission member; the movement direction of the telescopic rod is designated as the horizontal direction; and the vertical direction is the direction perpendicular to the horizontal direction.

[0024] In the above-mentioned bidirectional follow-up loading test device for a linear transmission mechanism, the left slide rail assembly of the upper guide assembly is connected to the mounting surface by 6 screws; the right slide rail assembly is connected to the mounting surface by 6 screws; the lower guide assembly connects the slide rail and the mounting surface by 2 screws; the linear transmission component is installed as a whole on the upper guide assembly and connected to the slider of the upper guide assembly by 4 screws;

[0025] One end of the upper lateral loading device is connected to the mounting surface of the platform by four screws through the mounting flange, and the other end is connected to the force sensor of the vertical loading device by four screws through the upper lug; one end of the lower lateral loading device is connected to the slider of the lower guide assembly by four screws through the upper lug, and the other end is connected to the mounting surface of the platform by four screws through the mounting flange;

[0026] The force sensor of the vertical loading device is connected to the upper lug of the upper lateral loading device via four screws. The screws pass through the first lug of the lower lug seat of the linear transmission component, the upper lug of the upper lateral loading device, and the second lug of the lower lug seat of the linear transmission component, securing the lug between the two lugs of the lower lug seat. Nuts are installed at the ends of the screws to secure the screws in place.

[0027] The screw is passed through the first lug of the lower lug seat of the vertical loading device, the upper lug of the lower lateral loading device, and the second lug of the lower lug seat of the vertical loading device in sequence, fixing the upper lug between the two lugs of the lower lug seat, and installing a nut at the end of the screw to fix the position of the screw;

[0028] The test piece is fixed to the mounting surface of the test stand by using four screws to fix the fixed mounting flange. The test piece's moving flange is fixed to the moving flange of the linear motion part by using two screws to achieve the expansion and contraction movement of the test piece along with the linear motion part.

[0029] The locking device is installed on the locking mounting surface of the linear motion part by screws; the locking pin of the locking device passes through the locking mounting surface of the linear motion part, the slider locking hole of the upper guide assembly and the slide rail locking hole in sequence, thereby locking the position of the linear motion part relative to the slide rail of the upper guide assembly, thereby achieving position locking of the test piece in a reverse direction;

[0030] The unlocked state of the locking device is that the locking pin does not pass through the locking hole of the slider of the upper guide assembly.

[0031] The beneficial effects of the present invention compared with the prior art are:

[0032] (1) The bidirectional follow-up loading test device for a linear transmission mechanism proposed in the present invention can simulate the nonlinear and discontinuous aerodynamic load conditions of a telescopic wing driven by a linear transmission mechanism by applying loads in both lateral and vertical directions.

[0033] (2) The present invention proposes a bidirectional follow-up loading test device suitable for linear transmission mechanisms. By independently controlling the lateral loading and vertical loading of the device, the test piece can be subjected to load tests in both the lateral and vertical directions. The lateral loading range achieved by the present invention is 0-25 kN, and the vertical loading range is 0-10 kN.

[0034] (3) The bidirectional follow-up loading test device for a linear transmission mechanism proposed in the present invention improves the support stiffness and motion flatness of the test device through the installation form of the combined guide of the upper and lower layers;

[0035] (4) The bidirectional follow-up loading test device for a linear transmission mechanism proposed in the present invention eliminates the vertical excess force caused by the cantilever structure of the test device by means of the joint loading of the upper and lower lateral loading devices, thereby improving the lateral loading accuracy;

[0036] (5) The bidirectional follow-up loading test device proposed in the present invention is suitable for a linear transmission mechanism and has the function of locking the test piece at a specified position, and can be used for the multi-position stalling ability test of the test piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic structural diagram of the loading test device of the present invention;

[0038] Figure 2 It is a structural schematic diagram of the stand of the present invention;

[0039] Figure 3 It is a structural schematic diagram of the upper guide assembly of the present invention;

[0040] Figure 4 It is a structural schematic diagram of the slide rail assembly of the present invention;

[0041] Figure 5 Schematic diagram of the structure of the linear transmission member of the present invention;

[0042] Figure 6 It is a structural schematic diagram of the upper layer lateral loading device of the present invention;

[0043] Figure 7 It is a structural schematic diagram of the vertical loading device of the present invention;

[0044] Figure 8 It is a structural schematic diagram of the lower guide assembly of the present invention;

[0045] Figure 9 It is a structural schematic diagram of the lower layer lateral loading device of the present invention;

[0046] Figure 10 It is a structural schematic diagram of the locking device of the present invention;

[0047] Figure 11 Schematic diagram of the structure of the test piece of the present invention;

[0048] Figure 12 This is a diagram defining the direction of the present invention;

[0049] Figure 13 Schematic diagram of the cooperation between the upper guide assembly, the lower guide assembly and the platform of the present invention;

[0050] Figure 14 Schematic diagram of the cooperation between the linear transmission member and the upper guide assembly of the present invention;

[0051] Figure 15 This is a schematic diagram of the installation structure of the upper layer lateral loading device and the lower layer lateral loading device of the present invention;

[0052] Figure 16 Schematic diagram of the installation of the upper lateral loading device, vertical loading device and linear transmission member of the present invention;

[0053] Figure 17 This is a schematic diagram of the installation of the vertical loading device and the lower lateral loading device of the present invention;

[0054] Figure 18 Schematic diagram of the installation of the test piece on the test device of the present invention;

[0055] Figure 19 This is a schematic diagram of the locking state of the locking device of the present invention;

[0056] Figure 20 Schematic diagram of the unlocked state of the locking device of the present invention. DETAILED DESCRIPTION

[0057] The present invention will be further described below in conjunction with the embodiments.

[0058] The present invention provides a bidirectional follow-up loading test device suitable for a linear transmission mechanism, which has the comprehensive functions of simultaneously applying bidirectional follow-up loading, applying lateral follow-up loading separately, and applying axial load separately. By applying loads in a bidirectional coupling in the lateral and vertical directions, the nonlinear and discontinuous aerodynamic load conditions of the telescopic wings driven by the linear transmission mechanism can be equivalently simulated, and the separate lateral and vertical loading functions can also be realized. By combining the guides of the upper and lower layers and loading the two electric cylinders together, the support stiffness of the test device is improved, and the redundant vertical force of the test device is eliminated. It has the function of locking the test piece at a specified position, and can be used for the stalling ability test of the test piece at multiple positions.

[0059] Bidirectional follow-up loading test device, such as Figure 1 As shown, it specifically includes a stand 1, an upper guide assembly 2, a linear transmission member 3, an upper lateral loading device 4, a vertical loading device 5, a lower guide assembly 6, a lower lateral loading device 7, a locking device 8 and a test piece 9.

[0060] Among them, the stand 1 is a horizontally placed L-shaped frame; the stand 1 includes a base plate 1-1 and a vertical plate 1-2; the test piece 9 is arranged axially perpendicular to the vertical plate 1-2, and the fixed end of the test piece 9 is fixedly connected to the vertical plate 1-2; the fixed end of the upper guide assembly 2 is fixedly connected to the side wall of the vertical plate 1-2; the linear transmission member 3 is horizontally installed on the telescopic end of the upper guide assembly 2; the telescopic end of the test piece 9 is fixedly connected to the linear transmission member 3; the upper lateral loading device 4 is horizontally arranged, and the fixed end of the upper lateral loading device 4 is fixedly connected to the vertical plate 1-2, and the telescopic end of the upper lateral loading device 4 is fixedly connected to the linear transmission member 3; the linear transmission member 3 is driven by the upper lateral loading device 4 to translate on the upper guide assembly 2, thereby realizing resistance loading on the test piece 9 during the telescopic process.

[0061] The vertical loading device 5 is axially arranged vertically; the top of the vertical loading device 5 is fixedly connected to the bottom of the linear transmission member 3 and the upper lateral loading device 4; the lower guide assembly 6 is arranged on the upper surface of the base plate 1-1; the lower lateral loading device 7 is axially arranged in parallel with the upper lateral loading device 4, and the fixed end of the lower lateral loading device 7 is fixedly connected to the vertical plate 1-2; the telescopic end of the lower lateral loading device 7 is connected to the lower guide assembly 6; the bottom end of the vertical loading device 5 is connected to the lower lateral loading device 7; through the synchronous telescopic movement of the upper lateral loading device 4 and the lower lateral loading device 7, the vertical loading device 5 is always perpendicular to the linear transmission member 3; the vertical loading of the linear transmission member 3 is realized by the vertical loading device 5, that is, the vertical loading of the test piece 9 is realized; the locking device 8 is installed on the side wall of the linear transmission member 3.

[0062] As attached Figure 2The figure shows a schematic diagram of the structure of the stand 1 according to the present invention, which comprises a base plate 1-1 and a vertical plate 1-2. The base plate 1-1 is installed in a horizontal direction, while the vertical plate 1-2 is installed in a vertical direction. The base plate 1-1 and the vertical plate 1-2 are welded at a 90-degree angle to each other to form the entire stand 1. The surface of the base plate 1-1 is designed with a mounting surface 1-1-1 with two threaded holes; the surface of the vertical plate 1-2 is designed with a mounting surface 1-2-1 with four threaded holes, a mounting surface 1-2-2 with six threaded holes, a mounting surface 1-2-3 with six threaded holes, a mounting surface 1-2-4 with four threaded holes, and a mounting surface 1-2-5 with four threaded holes.

[0063] As attached Figure 3 As shown, the structural diagram of the upper guide assembly 2 of the present invention includes two identical slide rail assemblies 2-1, which are distributed on the left and right sides of the vertical plate 1-2. During installation, it is necessary to ensure that the left and right slide rail assemblies 2-1 are on the same horizontal line.

[0064] As attached Figure 4 As shown, the structural schematic diagram of the slide rail assembly 2-1 of the present invention includes a slide rail 2-1-1 and a slider 2-1-2; a mounting flange 2-1-1-1 is designed at one end of the slide rail 2-1-1, and a plurality of slide rail locking holes 2-1-1-2 are provided on the side wall surface of the slide rail 2-1-1; the upper surface of the slider 2-1-2 is a mounting surface 2-1-2-1 with four threaded holes, and a slider locking hole 2-1-2-2 is provided at the center of the side wall surface of the slider 2-1-2.

[0065] As attached Figure 5 As shown, the structural schematic diagram of the linear transmission member 3 described in the present invention includes a support frame 3-1, a lower support ear seat 3-2, a moving flange 3-3 and a locking mounting surface 3-4; the lower support ear seat 3-2 is connected to the bottom surface of the support frame 3-1; the moving flange 3-3 is provided with two threaded holes for fastening the moving part of the test piece 9; the locking mounting surface 3-4 is arranged on the side wall surface of the support frame 3-1 for installing the locking device 8.

[0066] As attached Figure 6 The figure shows the structure of the upper lateral loading device 4 according to the present invention, which includes a mounting flange 4-1, an electric cylinder 4-2, a telescopic rod 4-3, a force sensor 4-4, screws 4-5, and an upper support lug 4-6. The mounting flange 4-1 secures the upper lateral loading device 4, the electric cylinder 4-2 provides the driving force to drive the telescopic rod 4-3 to freely extend and retract, one end of the force sensor 4-4 is connected to the telescopic rod 4-3, and the other end of the force sensor 4-4 is connected to the upper support lug 4-6 via four screws 4-5.

[0067] As attached Figure 7 As shown, the vertical loading device 5 includes a lower support lug 5-1, an electric cylinder 5-2, a telescopic rod 5-3 and a force sensor 5-4;

[0068] Among them, the lower support ear seat 5-1 is connected to the lower guide assembly 6; the electric cylinder 5-2 is axially vertically arranged on the top of the lower support ear seat 5-1; the telescopic rod 5-3 is coaxially docked with the output end of the top of the electric cylinder 5-2; the telescopic rod 5-3 is driven to freely extend and retract by the electric cylinder 5-2; the force sensor 5-4 is installed on the top of the telescopic rod 5-3.

[0069] As attached Figure 8 As shown, the lower guide assembly 6 includes a slider 6-1 and a slide rail 6-2; the slide rail 6-2 is installed on the upper surface of the base plate 1-1; the slider 6-1 and the slide rail 6-2 are slidably matched; the upper surface of the slider 6-1 has two threaded holes for connecting the lower guide assembly 6 with the lower lateral loading device 7; the two ends of the slide rail 6-2 have two mounting holes 6-2-1 for connecting the lower guide assembly 6 with the stand 1.

[0070] As attached Figure 9 As shown, the lower lateral loading device 7 includes a mounting flange 7-1, an electric cylinder 7-2, a telescopic rod 7-3, a force sensor 7-4, a screw 7-5 and a lower lug 7-6;

[0071] The mounting flange 7-1 plays a role in fixing the installation; the electric cylinder 7-2 is axially and horizontally mounted on the mounting flange 7-1; the telescopic rod 7-3 is coaxially docked with the electric cylinder 7-2; the electric cylinder 7-2 provides driving force to drive the telescopic rod 7-3 to freely extend and retract; one end of the force sensor 7-4 is connected to the telescopic rod 7-3, and the other end of the force sensor 7-4 is connected to the lower lug 7-6 through four screws 7-5; the lower lug 7-6 is mounted on the slider 6-1 through two mounting holes 6-2-1; the lower lug seat 5-1 is connected to the lower lug 7-6.

[0072] As attached Figure 10 The figure shows the structure of the locking device 8 of the present invention, which includes an electric telescopic cylinder 8-1, a fixed flange 8-2, a telescopic rod 8-3, and a locking pin 8-4. The electric telescopic cylinder 8-1 provides the driving force to drive the telescopic rod 8-3 to achieve telescopic movement; the fixed flange 8-2 is responsible for fixing the locking device 8 to the linear transmission member 3; the locking pin 8-4 is fixedly connected to the telescopic rod 8-3, and the telescopic rod 8-3 drives the locking pin 8-4 to extend and retract within the slider locking hole 2-1-2-2 and the slide rail locking hole 2-1-1-2.

[0073] As attached Figure 11The figure shows the structure of the test piece 9 according to the present invention, which comprises an electric telescopic cylinder 9-1, a fixed flange 9-2, a telescopic rod 9-3, and a movable flange 9-4. The electric telescopic cylinder 9-1 provides the driving force to drive the telescopic rod 9-3 to achieve telescopic movement; the fixed flange 9-2 secures the test piece 9 to the test stand 1; and the movable flange 9-4 is fixed to the telescopic rod 9-3 and is used to connect to the linear transmission member 3.

[0074] As attached Figure 12 As shown, the horizontal and vertical directions described in the present invention are defined such that the angle between the horizontal and vertical directions is 90°, and the movement direction of the test piece 9 in the present invention is designated as the horizontal direction.

[0075] As attached Figure 13 Figure 1 is a schematic diagram of the structure of the upper guide assembly 2, lower guide assembly 6, and stand 1 according to the present invention. The left side rail assembly 2-1 of the upper guide assembly 2 is connected to the mounting surface 1-2-2 via six screws 10, and the right side rail assembly 2-1 of the upper guide assembly 2 is connected to the mounting surface 1-2-3 via six screws 11. The lower guide assembly 6 has its rail 6-2 connected to the mounting surface 1-1-1 via two screws 12.

[0076] As attached Figure 14 FIG2 is a schematic diagram of the structure of the linear transmission member 3 and the upper guide assembly 2 according to the present invention. The linear transmission member 3 is integrally mounted on the upper guide assembly 2 and connected to the slider 2-1-2 of the upper guide assembly 2 by four screws 13.

[0077] As attached Figure 15 The figure shows a schematic diagram of the installation structure of the upper lateral loading device 4 and the upper lateral loading device 7 according to the present invention. One end of the upper lateral loading device 4 is connected to the mounting surface 1-2-4 of the platform 1 by four screws 14, and the other end is connected to the force sensor 5-4 of the vertical loading device 5 by four screws 15 via the upper lug 4-6. One end of the lower lateral loading device 7 is connected to the slider 6-1 of the lower guide assembly 6 by four screws 16, and the other end is connected to the mounting flange 7-1 by four screws 17.

[0078] As attached Figure 16FIG. 4 shows a schematic diagram of the installation of the upper lateral loading device 4, the vertical loading device 5, and the linear transmission member 3 according to the present invention. The upper lateral loading device 4 and the vertical loading device 5 are connected in such a manner that the force sensor 5-4 of the vertical loading device 5 is connected to the upper lug 4-6 of the upper lateral loading device 4 via four screws 20; a screw 18 passes through the first lug of the lower lug seat 3-2 of the linear transmission member 3, the upper lug 4-6 of the upper lateral loading device 4, and the second lug of the lower lug seat 3-2 of the linear transmission member 3 in sequence, securing the lug 4-6 between the two lugs of the lower lug seat 3-2; a nut sleeve 19 is installed at the end of the screw 18 to secure the position of the screw 18.

[0079] As attached Figure 17 Figure 2 shows a schematic diagram of the installation of the vertical loading device 5 and the lower lateral loading device 7 of the present invention. A screw 21 is sequentially inserted through the first tab of the lower support lug 5-1 of the vertical loading device 5, the upper support lug 7-6 of the lower lateral loading device 7, and the second tab of the lower support lug 5-1 of the vertical loading device 5, securing the upper support lug 7-6 between the two tabs of the lower support lug 5-1. A nut 22 is installed at the end of the screw 20 to secure the screw 20 in place.

[0080] As attached Figure 18 Figure 2 shows a schematic diagram of the installation of the test piece 9 of the present invention on the test apparatus. The test piece 9 is fixed to the mounting surface 1-2-1 of the test stand 1 by four screws 23, thereby securing the test piece 9. The moving flange 9-2 of the test piece 9 is fixed to the moving flange 3-3 of the linear motion member 3 by two screws 24, enabling the test piece 9 to extend and retract along with the linear motion member 3.

[0081] As attached Figure 19 FIG. 2 shows a schematic diagram of the locked state of the locking device 8. The locking device 8 is mounted on the locking mounting surface 3-4 of the linear motion member 3 by means of screws 25. The locking function of the present invention is specifically achieved by the locking pin 8-2 of the locking device 8 sequentially passing through the locking mounting surface 3-4 of the linear motion member 3, the slider locking hole 2-1-2-2 of the upper guide assembly 2, and the slide rail locking hole 2-1-1-2, thereby locking the position of the linear motion member 3 relative to the slide rail 2-1-1 of the upper guide assembly 2, and thus locking the position of the test piece 9 in a reverse direction.

[0082] As attached Figure 20 As shown, the unlocked state of the locking device 8 is that the locking pin 8 - 2 does not pass through the slider locking hole 2 - 1 - 2 - 2 of the upper guide assembly 2 .

[0083] The present invention proposes a bidirectional follow-up loading test device suitable for a linear transmission mechanism. By applying loads in a bidirectional coupling in the lateral and vertical directions, it can equivalently simulate the nonlinear and discontinuous aerodynamic load conditions of a telescopic wing driven by a linear transmission mechanism.

[0084] This invention proposes a bidirectional follow-up loading test device for linear drive mechanisms. By independently controlling the lateral and vertical loading functions of the device, it can perform load tests on the test piece in both the lateral and vertical directions. The lateral loading range achieved by this invention is 0-25 kN, and the vertical loading range is 0-10 kN.

[0085] The invention proposes a bidirectional follow-up loading test device suitable for a linear transmission mechanism, which improves the support stiffness and motion flatness of the test device through an installation form of combined guides of upper and lower layers.

[0086] The present invention proposes a bidirectional follow-up loading test device suitable for a linear transmission mechanism, which eliminates the vertical redundant force caused by the cantilever structure of the test device by jointly loading the upper and lower lateral loading devices, thereby improving the lateral loading accuracy.

[0087] The present invention proposes a bidirectional follow-up loading test device suitable for a linear transmission mechanism, which has the function of locking a test piece at a specified position and can be used for multi-position stalling capability testing of the test piece.

[0088] Although the present invention has been disclosed above in terms of preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solutions of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the scope of protection of the technical solutions of the present invention.

Claims

1. A bidirectional follow-up loading test device suitable for a linear transmission mechanism, characterized by: It comprises a stand (1), an upper guide assembly (2), a linear transmission member (3), an upper lateral loading device (4), a vertical loading device (5), a lower guide assembly (6), a lower lateral loading device (7), a locking device (8) and a test piece (9); The test stand (1) is a horizontally placed L-shaped frame; the test stand (1) includes a bottom plate (1-1) and a vertical plate (1-2); the test piece (9) is axially arranged perpendicular to the vertical plate (1-2), and the fixed end of the test piece (9) is fixedly connected to the vertical plate (1-2); the fixed end of the upper guide assembly (2) is fixedly connected to the side wall of the vertical plate (1-2); the linear transmission member (3) is horizontally installed on the telescopic end of the upper guide assembly (2); the telescopic end of the test piece (9) is fixedly connected to the linear transmission member (3); the upper lateral loading device (4) is horizontally arranged, and the fixed end of the upper lateral loading device (4) is fixedly connected to the vertical plate (1-2), and the telescopic end of the upper lateral loading device (4) is fixedly connected to the linear transmission member (3); the upper lateral loading device (4) drives the linear transmission member (3) to translate on the upper guide assembly (2), thereby realizing resistance loading on the test piece (9) during the telescopic process; The vertical loading device (5) is axially arranged vertically; the top of the vertical loading device (5) is fixedly connected to the bottom of the linear transmission member (3) and the upper lateral loading device (4); the lower guide assembly (6) is arranged on the upper surface of the bottom plate (1-1); the lower lateral loading device (7) is axially arranged parallel to the upper lateral loading device (4), and the fixed end of the lower lateral loading device (7) is fixedly connected to the vertical plate (1-2); the telescopic end of the lower lateral loading device (7) is connected to the lower guide assembly (6); the bottom end of the vertical loading device (5) is connected to the lower lateral loading device (7); through the synchronous telescopic movement of the upper lateral loading device (4) and the lower lateral loading device (7), the vertical loading device (5) is always perpendicular to the linear transmission member (3); the vertical loading device (5) is used to load the linear transmission member (3) in the vertical direction, that is, the test piece (9) is loaded in the vertical direction; the locking device (8) is installed on the side wall of the linear transmission member (3).

2. A bidirectional follow-up loading test device for a linear transmission mechanism according to claim 1, characterized in that: The surface of the bottom plate (1-1) is designed with a mounting surface (1-1-1) with two threaded holes; the surface of the vertical plate (1-2) is designed with a mounting surface (1-2-1) with four threaded holes, a mounting surface (1-2-2) with six threaded holes, a mounting surface (1-2-3) with six threaded holes, a mounting surface (1-2-4) with four threaded holes, and a mounting surface (1-2-5) with four threaded holes.

3. A bidirectional follow-up loading test device for a linear transmission mechanism according to claim 2, characterized in that: The upper guide assembly (2) comprises two slide rail assemblies (2-1); the two slide rail assemblies (2-1) are horizontally symmetrically mounted on the vertical plate (1-2); the slide rail assembly (2-1) comprises a slide rail (2-1-1) and a slider (2-1-2); the slide rail (2-1-1) is axially perpendicular to the vertical plate (1-2); the slider (2-1-2) is arranged on the slide rail (2-1-1) to enable the slider (2-1-2) to slide relative to the slide rail (2-1-1); a plurality of slide rail locking holes (2-1-1-2) are arranged on the side wall surface of the slide rail (2-1-1); the upper surface of the slider (2-1-2) is a mounting surface (2-1-2-1) with four threaded holes; and a slider locking hole (2-1-2-2) is arranged at the center of the side wall surface of the slider (2-1-2).

4. A bidirectional follow-up loading test device for a linear transmission mechanism according to claim 3, characterized in that: The linear transmission member (3) comprises a support frame (3-1), a lower support ear seat (3-2), a motion flange (3-3) and a locking mounting surface (3-4); The lower support ear seat (3-2) is connected to the bottom surface of the support frame (3-1); two threaded holes are provided on the motion flange (3-3) for fastening the telescopic end of the test piece (9); and the locking installation surface (3-4) is arranged on the side wall surface of the support frame (3-1) for installing the locking device (8).

5. A bidirectional follow-up loading test device for a linear transmission mechanism according to claim 4, characterized in that: The upper lateral loading device (4) comprises a mounting flange (4-1), an electric cylinder (4-2), a telescopic rod (4-3), a force sensor (4-4), a screw (4-5) and an upper support lug (4-6); The mounting flange (4-1) is fixedly mounted on the vertical plate (1-2); the electric cylinder (4-2) provides driving force to drive the telescopic rod (4-3) to freely extend and retract; one end of the force sensor (4-4) is connected to the telescopic rod (4-3); and the other end of the force sensor (4-4) is connected to the upper support ear (4-6) via four screws (4-5).

6. A bidirectional follow-up loading test device for a linear transmission mechanism according to claim 5, characterized in that: The vertical loading device (5) comprises a lower support lug (5-1), an electric cylinder (5-2), a telescopic rod (5-3) and a force sensor (5-4); The lower support ear seat (5-1) is connected to the lower guide assembly (6); the electric cylinder (5-2) is axially and vertically arranged on the top of the lower support ear seat (5-1); the telescopic rod (5-3) is coaxially connected to the output end of the top of the electric cylinder (5-2); the telescopic rod (5-3) is driven by the electric cylinder (5-2) to freely extend and retract; and the force sensor (5-4) is installed on the top of the telescopic rod (5-3); The lower guide assembly (6) comprises a slider (6-1) and a slide rail (6-2); the slide rail (6-2) is mounted on the upper surface of the base plate (1-1); the slider (6-1) and the slide rail (6-2) are in sliding engagement; the upper surface of the slider (6-1) is provided with two threaded holes for connecting the lower guide assembly (6) with the lower lateral loading device (7); and two mounting holes (6-2-1) are provided at both ends of the slide rail (6-2) for connecting the lower guide assembly (6) with the platform (1).

7. A bidirectional follow-up loading test device for a linear transmission mechanism according to claim 6, characterized in that: The lower layer transverse loading device (7) comprises a mounting flange (7-1), an electric cylinder (7-2), a telescopic rod (7-3), a force sensor (7-4), a screw (7-5) and a lower support lug (7-6); The mounting flange (7-1) plays a role in fixing the mounting; the electric cylinder (7-2) is axially and horizontally mounted on the mounting flange (7-1); the telescopic rod (7-3) is coaxially connected to the electric cylinder (7-2); the electric cylinder (7-2) provides a driving force to drive the telescopic rod (7-3) to freely extend and retract; one end of the force sensor (7-4) is connected to the telescopic rod (7-3), and the other end of the force sensor (7-4) is connected to the lower support ear (7-6) via four screws (7-5); the lower support ear (7-6) is mounted on the slider (6-1) via two mounting holes (6-2-1); and the lower support ear seat (5-1) is connected to the lower support ear (7-6).

8. The bidirectional follow-up loading test device for a linear transmission mechanism according to claim 7, characterized in that: The locking device (8) comprises an electric telescopic cylinder (8-1), a fixed flange (8-2), a telescopic rod (8-3) and a locking pin (8-4); the electric telescopic cylinder (8-1) is responsible for providing driving force to drive the telescopic rod (8-3) to achieve telescopic movement; the fixed flange (8-2) is used to fix the locking device (8) on the linear transmission member (3); the locking pin (8-4) is fixedly connected to the telescopic rod (8-3); the telescopic rod (8-3) drives the locking pin (8-4) to telescope in the slider locking hole (2-1-2-2) and the slide rail locking hole (2-1-1-2).

9. A bidirectional follow-up loading test device for a linear transmission mechanism according to claim 8, characterized in that: The test piece (9) comprises an electric telescopic cylinder (9-1), a fixed flange (9-2), a telescopic rod (9-3) and a movable flange (9-4); the electric telescopic cylinder (9-1) provides a driving force to drive the telescopic rod (9-3) to achieve telescopic movement; the fixed flange (9-2) realizes the fixed installation of the test piece (9) on the platform (1); the movable flange (9-4) is fixedly connected to the telescopic rod (9-3) and is used to connect to the linear transmission member (3); the movement direction of the telescopic rod (9-3) is designated as the horizontal direction; the vertical direction is a direction perpendicular to the horizontal direction.

10. A bidirectional follow-up loading test device for a linear transmission mechanism according to claim 9, characterized in that: The left side slide rail assembly (2-1) of the upper guide assembly (2) is connected to the mounting surface (1-2-2) via six screws (10); the right side slide rail assembly (2-1) is connected to the mounting surface (1-2-3) via six screws (11); the lower guide assembly (6) connects the slide rail (6-2) to the mounting surface (1-1-1) via two screws (12); the linear transmission member (3) is integrally mounted on the upper guide assembly (2) and connected to the slider (2-1-2) of the upper guide assembly (2) via four screws (13); One end of the upper lateral loading device (4) is connected to the mounting surface (1-2-4) of the platform (1) by means of four screws (14), and the other end is connected to the upper support ear (4-6) by means of four screws (15) to the force sensor (5-4) of the vertical loading device (5); one end of the lower lateral loading device (7) is connected to the upper support ear (7-6) by means of four screws (16) to the slider (6-1) of the lower guide assembly (6), and the other end is connected to the mounting flange (7-1) by means of four screws (17) to the mounting surface (1-2-5) of the platform (1); The force sensor (5-4) of the vertical loading device (5) is connected to the upper support ear (4-6) of the upper lateral loading device (4) via four screws (20); the screw (18) sequentially passes through the first ear piece of the lower support ear seat (3-2) of the linear transmission member (3), the upper support ear (4-6) of the upper lateral loading device (4) and the second ear piece of the lower support ear seat (3-2) of the linear transmission member (3), and fixes the support ear (4-6) between the two ear pieces of the lower support ear seat (3-2); a nut sleeve (19) is installed at the end of the screw (18), thereby achieving the position fixation of the screw (18); The screw (21) passes through the first ear piece of the lower support ear seat (5-1) of the vertical loading device (5), the upper support ear (7-6) of the lower lateral loading device (7), and the second ear piece of the lower support ear seat (5-1) of the vertical loading device (5) in sequence, fixing the upper support ear (7-6) between the two ear pieces of the lower support ear seat (5-1), and the nut (22) is installed at the end of the screw (20), thereby achieving the position fixation of the screw (20); The test piece (9) is fixed to the mounting surface (1-2-1) of the test stand (1) by four screws (23), thereby fixing the test piece (9); the moving flange (9-2) of the test piece (9) is fixed to the moving flange (3-3) of the linear motion member (3) by two screws (24), thereby enabling the test piece (9) to move in a telescopic manner along with the linear motion member (3); The locking device (8) is mounted on the locking mounting surface (3-4) of the linear motion component (3) by means of a screw (25); the locking pin (8-2) of the locking device (8) sequentially passes through the locking mounting surface (3-4) of the linear motion component (3), the slider locking hole (2-1-2-2) of the upper guide assembly (2), and the slide rail locking hole (2-1-1-2), thereby locking the position of the linear motion component (3) relative to the slide rail (2-1-1) of the upper guide assembly (2), thereby achieving position locking of the test piece (9) in a reverse direction; The unlocked state of the locking device (8) is that the locking pin (8-2) does not pass through the slider locking hole (2-1-2-2) of the upper guide assembly (2).

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