Bidirectional follow-up loading test device suitable for linear transmission mechanism

Abstract

The invention relates to a bidirectional follow-up loading test device suitable for a linear transmission mechanism, and belongs to the field of aerospace equipment. Comprising a rack, an upper-layer guide assembly, a linear transmission part, upper-layer transverse loading equipment, vertical loading equipment, a lower-layer guide assembly, lower-layer transverse loading equipment, a locking device and a tested piece, loads are applied through bidirectional coupling in the transverse direction and the vertical direction, the non-linear and non-continuous aerodynamic load working condition borne by the telescopic wing driven by a linear transmission mechanism can be equivalently simulated, and the independent loading function in the transverse direction and the vertical direction can also be achieved. Through the mode of combined guiding of the upper layer and the lower layer and common loading of the two electric cylinders, the supporting rigidity of the test device is improved, and redundant force of the test device in the vertical direction is also eliminated; the device has a function of locking a tested piece at a specified position, and can be used for testing the locked-rotor capability of the tested 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 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 the current deformable aircraft. Deformable aircraft will be subjected to various complex external loads during flight. In order to improve the reliability of the deformation drive mechanism and expose the weak links in advance, it is necessary to carry out flight load simulation loading tests on the deformation drive mechanism on the ground. At present, wing wind tunnel tests and test flights can effectively realize the external load bearing capacity test of the deformation 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 mechanism.

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

[0004] Passive follow-up loading scheme, such as Chinese patent CN118701303A, is named a passive follow-up loading device and working method for a deformable wing, which consists of a support frame, a test wing bracket, a test wing, a high-pressure cylinder assembly, a plurality of passive loading modules, etc. This scheme requires manual adjustment of the wire rope tension to achieve fixed value loading, which makes it difficult to achieve flight load simulation with variable loads, and it is also impossible to achieve follow-up loading in both the horizontal and vertical directions of the telescopic wing at the same time.

[0005] Active follow-up loading scheme, such as Chinese patent CN118723111A, is named as a multi-stage telescopic wing follow-up loading device that can simulate uniformly distributed aerodynamic loads, which is composed of a load-bearing platform, a test wing surface, and several force load applying devices. The force load applying device in this scheme has a complex structure, too many installation interfaces with the test piece, and requires multiple electric cylinders to work together to realize the follow-up loading of the test piece, and it is impossible to apply loads in two directions at the same time. Summary of the invention

[0006] The technical problem solved by the present invention is to overcome the deficiencies of the prior art 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 bench, 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 vertically 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 linear transmission member is driven to translate on the upper guide assembly by the upper lateral loading device 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 bottom plate; the lower lateral loading device is axially arranged parallel to 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 device is used to realize vertical loading of the linear transmission member, that is, vertical loading of the test piece; 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 arranged 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 arranged at the center of the side wall surface of the slider.

[0013] In the above-mentioned bidirectional follow-up loading test device suitable for 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 arranged on the moving flange for fastening the telescopic end of the test piece; the locking installation surface is arranged on the side wall surface of the support frame for installing the locking device.

[0015] In the above-mentioned bidirectional follow-up loading test device suitable 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 support 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; and 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 suitable for a linear transmission mechanism, the vertical loading device includes a lower support ear seat, an electric cylinder, a telescopic rod and a force sensor;

[0018] The lower support ear seat is connected to the lower guide assembly; the electric cylinder is axially and vertically arranged on the top of the lower support ear seat; 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 are slidably matched; 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 suitable 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 and horizontally installed 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 support ear through four screws; the lower support ear is installed on the slider through two mounting holes; the lower support ear seat is connected to the lower support ear.

[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 a 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 realize telescopic movement; the fixed flange realizes the fixed installation of the test piece on the bench; the movable flange is fixedly connected to the telescopic rod for connecting with 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 suitable 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 stand by means of four screws through the mounting flange, and the other end is connected to the force sensor of the vertical loading device by means of four screws through the upper support ear; one end of the lower lateral loading device is connected to the slider of the lower guide assembly by means of four screws through the upper support ear, and the other end is connected to the mounting surface of the stand by means of four screws through the mounting flange;

[0026] The force sensor of the vertical loading device is connected to the upper ear of the upper lateral loading device through four screws; the screws pass through the first ear of the lower ear seat of the linear transmission member, the upper ear of the upper lateral loading device and the second ear of the lower ear seat of the linear transmission member in sequence, and fix the ear between the two ears of the lower ear seat; a nut sleeve is installed at the end of the screw to fix the position of the screw;

[0027] The screw passes through the first ear piece of the lower ear seat of the vertical loading device, the upper ear of the lower lateral loading device and the second ear piece of the lower ear seat of the vertical loading device in sequence, fixes the upper ear between the two ears of the lower ear seat, and installs a nut at the end of the screw to fix the position of the screw;

[0028] The test piece is fixed on 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 on 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 installation surface of the linear motion part by means of screws; the locking pin of the locking device passes through the locking installation surface of the linear motion part, the locking hole of the slider of the upper guide assembly and the locking hole of the slide rail in sequence, so as to lock the position of the linear motion part relative to the slide rail of the upper guide assembly, thereby realizing the 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 slider locking hole 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 equivalently simulate the nonlinear and discontinuous aerodynamic load conditions of a telescopic wing driven by a linear transmission mechanism by applying loads in a bidirectional coupling in the lateral and vertical directions;

[0033] (2) The bidirectional follow-up loading test device for linear transmission mechanism proposed in the present invention can realize the load test of the test piece in the lateral direction and vertical direction respectively by controlling the lateral loading and vertical loading of the device separately. The lateral loading range realized by the present invention is 0~25KN, and the vertical loading range is 0~10KN;

[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 redundant force caused by the cantilever structure of the test device by means of loading by two upper and lower lateral loading devices, thereby improving the lateral loading accuracy;

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

[0037] Figure 1 This is a schematic diagram of the structure 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 It is a structural schematic diagram of a 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] Fig. 9 It is a structural schematic diagram of the lower layer lateral loading device of the present invention;

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

[0047] Fig.11 It is a schematic structural diagram of the test piece of the present invention;

[0048] Fig.12 It is a diagram defining the directions of the present invention;

[0049] Fig.13 It is a schematic diagram of the cooperation between the upper guide assembly, the lower guide assembly and the stand of the present invention;

[0050] Fig.14 It is a schematic diagram of the cooperation between the linear transmission member and the upper guide assembly of the present invention;

[0051] Fig.15 It 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] Fig.16 It is a schematic diagram of the installation of the upper lateral loading device, the vertical loading device and the linear transmission member of the present invention;

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

[0054] Fig.18 It is a schematic diagram of installing the test piece of the present invention on the test device;

[0055] Fig.19 It is a schematic diagram of the locking state of the locking device of the present invention;

[0056] Fig. 20 It is a 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 alone, and applying axial load alone. By applying loads through bidirectional coupling in the lateral and vertical directions, the nonlinear and discontinuous aerodynamic load conditions of telescopic wings driven by a linear transmission mechanism can be equivalently simulated, and the lateral and vertical separate loading functions can also be realized. Through the combined guidance 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. It has the function of locking the test piece at a specified position, and can be used for the test piece's stalling ability test 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 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 at 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, so as to realize the resistance loading of 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 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 realize the vertical loading of the linear transmission member 3, that is, the vertical loading of the test piece 9; the locking device 8 is installed on the side wall of the linear transmission member 3.

[0062] As attached Figure 2As shown, the schematic diagram of the structure of the stand 1 of the present invention comprises a bottom plate 1-1 and a vertical plate 1-2. The bottom plate 1-1 is installed in a horizontal direction, and the vertical plate 1-2 is installed in a vertical direction. The bottom plate 1-1 and the vertical plate 1-2 are welded at 90 degrees to form the whole stand 1. 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.

[0063] As attached Figure 3 As shown, the structural schematic 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; one end of the slide rail 2-1-1 is designed with a mounting flange 2-1-1-1, and 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.

[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, and is used to install the locking device 8.

[0066] As attached Figure 6 As shown, the structural schematic diagram of the upper lateral loading device 4 of the present invention 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 plays a role in fixing and mounting the upper lateral loading device 4, the electric cylinder 4-2 provides a 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 through four screws 4-5.

[0067] As attached Figure 7 As shown, the vertical loading device 5 includes a lower support ear seat 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 connected to 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 Fig. 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 support ear 7-6 through four screws 7-5; the lower support ear 7-6 is mounted on the slider 6-1 through two mounting holes 6-2-1; the lower support ear seat 5-1 is connected to the lower support ear 7-6.

[0072] As attached Fig.10 As shown, the structural schematic diagram of the locking device 8 of the present invention 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 is responsible for providing 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 on 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 telescope in the slider locking hole 2-1-2-2 and the slide rail locking hole 2-1-1-2.

[0073] As attached Fig.11As shown, the structural schematic diagram of the test piece 9 of the present invention includes 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 is responsible for providing a driving force to drive the telescopic rod 9-3 to achieve telescopic movement; the fixed flange 9-2 is responsible for fixing the test piece 9 on the stand 1; the movable flange 9-4 is fixedly connected to the telescopic rod 9-3 and is used to connect with the linear transmission member 3.

[0074] As attached Fig.12 As shown, the definition of the transverse and vertical directions in the present invention is that the angle between the transverse and vertical directions is 90°, and the movement direction of the test piece 9 in the present invention is designated as the transverse direction.

[0075] As attached Fig.13 As shown, it is a schematic diagram of the matching structure of the upper guide assembly 2, the lower guide assembly 6 and the stand 1 of 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 by 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 by six screws 11; the lower guide assembly 6 connects the rail 6-2 to the mounting surface 1-1-1 by two screws 12.

[0076] As attached Fig.14 1 is a schematic diagram of the matching structure of the linear transmission member 3 and the upper guide assembly 2 of 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 Fig.15 As shown, the schematic diagram of the installation structure of the upper lateral loading device 4 and the upper lateral loading device 7 of the present invention. One end of the upper lateral loading device 4 is connected to the mounting surface 1-2-4 of the stand 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 by 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 Fig.16As shown, the installation schematic diagram of the upper lateral loading device 4, the vertical loading device 5 and the linear transmission member 3 of the present invention. The upper lateral loading device 4 and the vertical loading device 5 are connected in such a way 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 through four screws 20; the 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, and fixes the lug 4-6 between the two lugs of the lower lug seat 3-2, and the nut sleeve 19 is installed at the end of the screw 18 to achieve the position fixation of the screw 18.

[0079] As attached Fig.17 As shown, the schematic diagram of the installation of the vertical loading device 5 and the lower lateral loading device 7 of the present invention. The screw 21 passes through the first ear piece of the lower ear seat 5-1 of the vertical loading device 5, the upper ear 7-6 of the lower lateral loading device 7 and the second ear piece of the lower ear seat 5-1 of the vertical loading device 5 in sequence, fixes the upper ear 7-6 between the two ears of the lower ear seat 5-1, and the nut 22 is installed at the end of the screw 20 to achieve the position fixation of the screw 20.

[0080] As attached Fig.18 FIG. 1 is a schematic diagram of the installation of the test piece 9 of the present invention on the test device. The test piece 9 is fixed on the mounting surface 1-2-1 of the test stand 1 by four screws 23 to fix the test piece 9; the moving flange 9-2 of the test piece 9 is fixed on the moving flange 3-3 of the linear motion part 3 by two screws 24 to achieve the telescopic movement of the test piece 9 along with the linear motion part 3.

[0081] As attached Fig.19 As shown, a schematic diagram of the locking state of the locking device 8. The locking device 8 is installed on the locking mounting surface 3-4 of the linear motion member 3 by means of screws 25; the locking function described in the present invention is specifically realized as follows: the locking pin 8-2 of the locking device 8 passes 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 in sequence, 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 realizing the position locking of the test piece 9 in a reverse direction.

[0082] As attached Fig. 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, which can equivalently simulate the nonlinear and discontinuous aerodynamic load conditions of a telescopic wing driven by a linear transmission mechanism by applying loads through bidirectional coupling in the lateral and vertical directions.

[0084] The invention proposes a bidirectional follow-up loading test device suitable for a linear transmission mechanism, which can realize the load test of the test piece in the lateral direction and the vertical direction respectively by controlling the lateral loading and the vertical loading of the device separately. The lateral loading range realized by the invention is 0-25KN, and the vertical loading range is 0-10KN.

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

[0086] The 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 and improves the lateral loading accuracy by loading with upper and lower lateral loading devices together.

[0087] The invention provides 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 a multi-position stalling capability test of the test piece.

[0088] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution 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 solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A bidirectional follow-up loading test device suitable for a linear transmission mechanism, characterized in that: It comprises a stand (1), an upper guide assembly (2), a linear transmission member (3), an upper transverse loading device (4), a vertical loading device (5), a lower guide assembly (6), a lower transverse 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) comprises 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 arranged horizontally, 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 linear transmission member (3) and the bottom of the upper transverse loading device (4); the lower guide assembly (6) is arranged on the upper surface of the bottom plate (1-1); the lower transverse loading device (7) is axially arranged parallel to the upper transverse loading device (4), and the fixed end of the lower transverse loading device (7) is fixedly connected to the vertical plate (1-2); the telescopic end of the lower transverse 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 transverse loading device (7); through the synchronous telescopic movement of the upper transverse loading device (4) and the lower transverse 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 suitable 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 suitable 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 achieve sliding of the slider (2-1-2) 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 suitable 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); the moving flange (3-3) is provided with two threaded holes 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 suitable 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 a 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 suitable for a linear transmission mechanism according to claim 5, characterized in that: The vertical loading device (5) comprises a lower support ear seat (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 slidably matched; the upper surface of the slider (6-1) is provided with two threaded holes for realizing the connection between the lower guide assembly (6) and the lower lateral loading device (7); and the two ends of the slide rail (6-2) are provided with two mounting holes (6-2-1) for realizing the connection between the lower guide assembly (6) and the stand (1).

7. A bidirectional follow-up loading test device suitable for a linear transmission mechanism according to claim 6, characterized in that: The lower layer lateral 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) through four screws (7-5); the lower support ear (7-6) is mounted on the slider (6-1) through two mounting holes (6-2-1); and the lower support ear seat (5-1) is connected to the lower support ear (7-6).

8. A bidirectional follow-up loading test device suitable 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 a 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 suitable 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) is used to fix the test piece (9) on the stand (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; and the vertical direction is a direction perpendicular to the horizontal direction.

10. A bidirectional follow-up loading test device suitable 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) and 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 stand (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 stand (1); The force sensor (5-4) of the vertical loading device (5) is connected to the upper ear (4-6) of the upper lateral loading device (4) via four screws (20); the screw (18) passes through the first ear piece of the lower ear seat (3-2) of the linear transmission member (3), the upper ear (4-6) of the upper lateral loading device (4) and the second ear piece of the lower ear seat (3-2) of the linear transmission member (3) in sequence, and fixes the ear (4-6) between the two ear pieces of the lower ear seat (3-2); a nut sleeve (19) is installed at the end of the screw (18) to achieve the position fixation of the screw (18); The screw (21) passes through the first ear piece of the lower ear seat (5-1) of the vertical loading device (5), the upper ear piece (7-6) of the lower lateral loading device (7) and the second ear piece of the lower ear seat (5-1) of the vertical loading device (5) in sequence, and fixes the upper ear piece (7-6) between the two ear pieces of the lower ear seat (5-1). The nut (22) is installed at the end of the screw (20), so that the position of the screw (20) is fixed; The test piece (9) is fixedly mounted on a mounting surface (1-2-1) of a 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 piece (3) by two screws (24), thereby enabling the test piece (9) to move in a telescopic manner along with the linear motion piece (3); The locking device (8) is installed on the locking installation 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) passes through the locking installation 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) in sequence, 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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