A three-dimensional test device for inclined cables in a wind tunnel laboratory

Abstract

The present invention provides a three-dimensional test device for a wind tunnel laboratory cable, which belongs to the technical field of building structure detection equipment, and includes at least one specimen fixing mechanism, which includes a turntable, a linear slider, a turntable, a rotating hinge seat, a traction drive, a lateral bracket and a clamp. The turntable is rotatably arranged on a working surface and is provided with a linear slide rail; the linear slider is slidably matched with the linear slide rail; the turntable is rotatably arranged on the linear slider, and an annular slide rail is arranged on the outer periphery; the rotating hinge seat is rotatably arranged in the middle of the turntable; one end of the traction drive is rotatably connected to the rotating hinge seat; one end of the lateral bracket is connected to the middle of the traction drive, and the other end is provided with a ring rail slider, and the ring rail slider is slidably matched with the ring rail slide rail; the clamp is arranged at the other end of the traction drive to clamp the specimen. The present invention can freely and quickly adjust the posture of the specimen, can greatly save time and cost, has strong compatibility and is easy to use.

Description

Technical Field

[0001] The invention belongs to the technical field of building structure detection equipment, and more specifically, relates to a three-dimensional test device for inclined cables in a wind tunnel laboratory. Background Art

[0002] Wind tunnel experiment refers to an aerodynamic experimental method in which an aircraft or other object model is placed in a wind tunnel to study gas flow and its interaction with the model in order to understand the aerodynamic characteristics of the actual aircraft or other objects.

[0003] As the span of cable-stayed bridges continues to increase, the length of the cables is also increasing, and the wind loads on the cables are also increasing. Cables are prone to damage to connectors under the action of wind loads, so it is urgent to study the wind resistance of cables. At present, there are two main methods for studying the wind resistance of cables: wind tunnel tests and numerical simulations. Wind tunnel tests have the advantages of intuitiveness and high precision, and can directly observe the actual performance of the model in the airflow.

[0004] In the prior art, two-dimensional pressure and vibration tests are mainly performed on the model. In order to better understand the real flow field state of the cable, a three-dimensional dynamic pressure and vibration test can be performed on the inclined cable. At present, the three-dimensional test of the inclined cable generally uses a single-angle test bracket and a multi-angle tilt adjustment frame bracket to fix the specimen.

[0005] However, this method still has limitations and inconveniences. Although it can meet the simple requirements of the test, manual adjustment is required during the multi-angle adjustment process, and disassembly and installation are required each time, which greatly increases the time cost and difficulty, and the range of inclination angles that can be achieved is relatively small. Summary of the invention

[0006] The purpose of the present invention is to provide a three-dimensional test device for a wind tunnel laboratory cable-stayed cable, so as to solve the technical problems in the prior art that the fixing method of the test piece has limitations and inconveniences in use when performing a three-dimensional static pressure test on the cable-stayed cable.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a three-dimensional test device for inclined cables in a wind tunnel laboratory, comprising at least one specimen fixing mechanism, the specimen fixing mechanism comprising a turntable, a linear slider, a turntable, a rotating hinge seat, a traction drive, a lateral bracket and a clamp, the turntable is rotatably set on a working surface, and is provided with a linear slide rail; the linear slider is slidably matched with the linear slide rail; the turntable is rotatably set on the linear slider, and an annular slide rail is provided on the outer periphery; the rotating hinge seat is rotatably set in the middle of the turntable; one end of the traction drive is rotatably connected to the rotating hinge seat; one end of the lateral bracket is connected to the middle of the traction drive, and the other end is provided with a ring rail slider, and is slidably matched with the ring rail slider; the clamp is set at the other end of the traction drive to clamp the specimen.

[0008] In combination with the above technical solution, in a possible implementation, the lateral bracket includes an arc sleeve, an arc rod and a first fastener, one end of the arc sleeve is fixedly connected to the middle part of the traction drive; one end of the arc rod is inserted into the arc sleeve and slidably cooperates with the arc sleeve, and the other end is fixedly connected to the ring rail slider; the first fastener is provided on the arc sleeve to fix the arc rod to the arc sleeve; wherein, the arc rod is provided with a first scale to control the deflection angle of the traction drive.

[0009] In combination with the above technical solution, in a possible implementation, the linear guide rail and the linear slider, and the annular guide rail and the annular slider are fastened and fixed by a snap-fit ​​structure.

[0010] In combination with the above technical solution, in a possible implementation, the turntable and the working surface and the rotating hinge and the turntable are fastened and fixed by a second fastener.

[0011] In combination with the above technical solution, in a possible implementation method, the turntable is rotated by a rotating shaft fixed on the working surface, and the rotating shaft and the turntable, the linear slide rail and the linear slider, and the rotating hinge and the turntable are fastened and fixed by a linkage locking mechanism.

[0012] In combination with the above technical solution, in a possible implementation method, an external spline is provided on the rotating shaft, a blind hole is provided on the turntable, the external spline portion of the rotating shaft is exposed in the blind hole, a first through hole is provided on the rotating axis of the rotating hinge seat, a second through hole corresponding to the first through hole is provided on the turntable, an internal spline is provided in the second through hole, and the linkage locking mechanism includes a locking lever, a locking member, a trigger rod, a locking key, a pressure plate, a plurality of first elastic members, a locking rod and a second elastic member, the trigger rod is penetrated in the first through hole and the second through hole, and can slide in the first through hole and the second through hole, a locking key matching the internal spline is provided in the middle of the trigger rod, and a first limit rod is provided at one end of the trigger rod facing the linear slide rail The locking lever has one end that is rotatably connected to the rotating hinge seat, and the middle part is rotatably connected to the end of the trigger rod that faces the traction drive; the locking piece is used to lock the other end of the locking lever; the pressure plate is arranged at the bottom of the linear slide rail, and the side facing the trigger rod is provided with a second limiting structure that cooperates with the first limiting structure; a plurality of first elastic members are arranged at intervals between the pressure plate and the bottom of the linear slide rail, and are respectively connected to the pressure plate and the bottom of the linear slide rail; the locking rod is passed through the blind hole, and one end is fixedly connected to the pressure plate, and the other end cooperates with the external spline on the rotating shaft; the second elastic member is arranged in the blind hole, and is connected or in contact with the locking rod, and is used to provide an elastic force to the locking rod in the direction away from the external spline.

[0013] In combination with the above technical solution, in a possible implementation, a friction pair structure is provided between the first limiting structure and the second limiting structure, and there are two locking rods, which are respectively located on both sides of the rotating shaft.

[0014] In combination with the above technical solution, in a possible implementation, the clamp includes a first clamping assembly, a frame, a plurality of third elastic members and a second clamping assembly, the first clamping assembly is connected to the traction drive; the frame is connected to the first clamping assembly; the plurality of third elastic members are circumferentially arranged in the frame; the second clamping assembly is suspended in the frame through the plurality of third elastic members, and is used to clamp the test piece.

[0015] In combination with the above technical solution, in a possible implementation, the specimen fixing mechanism further includes a force measuring module, which is disposed between the traction drive and the fixture and is used to detect the traction force applied by the fixture to the specimen.

[0016] In combination with the above technical solution, in a possible implementation method, the three-dimensional test device of the inclined cable in the wind tunnel laboratory also includes an outer frame, and there are two specimen fixing mechanisms, which are respectively arranged at the upper and lower parts of the outer frame, and are used to fix the two ends of the specimen, and the turntable of each specimen fixing mechanism is rotatably set on the outer frame.

[0017] The beneficial effect of the three-dimensional test device for inclined cables in a wind tunnel laboratory provided by the present invention is that, compared with the prior art, the present invention can freely adjust the various postures of the test piece during the wind tunnel test through the cooperation of components such as a turntable, a linear slide rail, a linear slider, a turntable, an annular slide rail, a rotating hinge seat, a traction drive, a lateral bracket and a clamp, and can adjust to the appropriate length and angle at the fastest speed to meet the requirements of the working conditions, which can greatly save time costs, has strong compatibility and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A schematic structural diagram of a three-dimensional test device for a stay cable in a wind tunnel laboratory provided by an embodiment of the present invention;

[0020] Figure 2 A schematic cross-sectional view of a three-dimensional test device for a stay cable in a wind tunnel laboratory provided by another embodiment of the present invention;

[0021] Figure 3 for Figure 2 A is an enlarged structural diagram;

[0022] Figure 4 A schematic structural diagram of a three-dimensional test device for a stay cable in a wind tunnel laboratory provided by another embodiment of the present invention;

[0023] Figure 5 A schematic side structural view of a frame portion of a three-dimensional test device for inclined cables in a wind tunnel laboratory provided in accordance with another embodiment of the present invention.

[0024] Among them, the reference numerals in the figures are as follows:

[0025] 10. Turntable; 11. Linear guide rail; 12. Rotating shaft;

[0026] 20. Linear slider;

[0027] 30. Turntable; 31. Annular slide rail;

[0028] 40. Rotating hinge seat;

[0029] 50. Traction drive; 51. Force measurement module;

[0030] 60. Lateral support;

[0031] 70. Clamp; 71. First clamping assembly; 72. Frame; 73. Third elastic member; 74. Second clamping assembly;

[0032] 81. locking lever; 82. locking member; 83. locking rod; 84. locking key; 85. pressing plate; 86. first elastic member; 87. locking rod; 88. second elastic member;

[0033] 90. External frame; 100. Test piece. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0035] It should be further explained that the drawings and implementation modes of the present invention mainly describe the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

[0036] When an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0037] The directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself. The directions or positional relationships indicated by the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0038] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used here are interpreted accordingly.

[0039] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.

[0040] The three-dimensional test device for the wind tunnel laboratory stay cable provided by the present invention is now described.

[0041] like Figure 1 and Figure 2 As shown, the first embodiment of the present invention provides a three-dimensional test device for a wind tunnel laboratory inclined cable, including at least one specimen fixing mechanism, which includes a turntable 10, a linear slider 20, a turntable 30, a rotating hinge seat 40, a traction drive 50, a lateral bracket 60 and a clamp 70. The turntable 10 is used to be rotatably set on a working surface and is provided with a linear slide rail 11; the linear slider 20 is slidably matched with the linear slide rail 11; the turntable 30 is rotatably set on the linear slider 20, and an annular slide rail 31 is provided on the outer periphery; the rotating hinge seat 40 is rotatably set in the middle of the turntable 30; one end of the traction drive 50 is rotatably connected to the rotating hinge seat 40; one end of the lateral bracket 60 is connected to the middle of the traction drive 50, and the other end is provided with a ring rail slider, and is slidably matched with the ring rail 31 through the ring rail slider; the clamp 70 is arranged at the other end of the traction drive 50 to clamp the specimen.

[0042] Before conducting the test, the entire device is installed in the wind tunnel test equipment. One end of the specimen 100 can be fixed on the wind tunnel equipment or other clamping mechanism first, and the angle of the turntable 10 is adjusted by rotating the turntable 10. The positions of the linear slider 20 and the turntable 30 on the linear slide rail 11 are adjusted by sliding the linear slider 20. The rotation angle of the traction drive 50 is adjusted by rotating the hinge seat 40 and the lateral bracket 60, and the inclination angle of the traction drive 50 is adjusted by working the lateral bracket 60. The telescopic length is adjusted by the traction drive 50 so that the clamp 70 is in a suitable position. Then, the other end of the specimen 100 is clamped and fixed on the clamp 70, and the fixation of the specimen is completed. Then, the traction drive 50 is used to apply the required traction force to the specimen, and the test is started.

[0043] Compared with the prior art, the three-dimensional test device for the wind tunnel laboratory cable provided in this embodiment can freely adjust the various postures of the test piece during the wind tunnel test through the cooperation of components such as the turntable 10, the linear slide rail 11, the linear slider 20, the turntable 30, the annular slide rail 31, the rotating hinge seat 40, the traction drive 50, the lateral bracket 60 and the clamp 70, and can adjust to the appropriate length and angle at the fastest speed to meet the requirements of the working conditions, which can greatly save time costs, has strong compatibility and is easy to use.

[0044] like Figures 1 to 5 As shown, a specific implementation mode provided by the present invention based on the first implementation mode is as follows:

[0045] In order to better collect test data, the specimen fixing mechanism also includes a force measuring module 51, which is arranged between the traction driver 50 and the clamp 70 and is used to detect the traction force applied by the clamp 70 to the specimen, that is, the longitudinal force on the specimen.

[0046] In order to more conveniently fix the specimen, the wind tunnel laboratory inclined cable three-dimensional test device also includes an outer frame 90, and two specimen fixing mechanisms are respectively arranged at the upper and lower parts of the outer frame 90, for fixing the two ends of the specimen, and the turntable 10 of each specimen fixing mechanism is rotatably arranged on the outer frame 90. Through the two above-mentioned specimen fixing mechanisms, the two ends of the specimen can be fixed respectively, and the operation is also convenient and quick while taking into account the adjustment of the angle of the specimen.

[0047] In a specific embodiment, the lateral bracket includes an arc sleeve, an arc rod and a first fastener, one end of the arc sleeve is fixedly connected to the middle of the traction drive 50; one end of the arc rod is inserted into the arc sleeve and slidably cooperates with the arc sleeve, and the other end is fixedly connected to the ring rail slider; the first fastener is provided on the arc sleeve to fix the arc rod to the arc sleeve; wherein the arc rod is provided with a first scale to control the deflection angle of the traction drive. In this form, not only can the angle of the traction drive 50 be adjusted more conveniently, but also the angle of the traction drive 50 can be adjusted in a larger adjustment range, and the adjustment is smooth and accurate.

[0048] In some specific embodiments, the linear guide rail 11 and the linear slider 20 and the annular guide rail 31 and the annular slider are fastened by a buckle structure. The turntable 10 and the working surface and the rotating hinge seat 40 and the turntable 30 are fastened by a second fastener to avoid relative looseness during the wind tunnel test.

[0049] In other specific embodiments, the turntable 10 is rotated by a rotating shaft 12 fixed on the working surface, and the rotating shaft 12 and the turntable 10, the linear guide rail 11 and the linear slider 20, and the rotating hinge 40 and the turntable 30 are fastened and fixed by a linkage locking mechanism.

[0050] like Figure 2 and Figure 3As shown, in a specific embodiment, an external spline is provided on the rotating shaft 12, a blind hole is provided on the turntable 10, the external spline part on the rotating shaft 12 is exposed in the blind hole, a first through hole is provided on the rotating axis of the rotating hinge seat 40, a second through hole corresponding to the first through hole is provided on the turntable 30, an internal spline is provided in the second through hole, and the linkage locking mechanism includes a locking lever 81, a locking member 82, a trigger rod 83, a locking key 84, a pressure plate 85, a plurality of first elastic members 86, a locking rod 87 and a second elastic member 88, the trigger rod 83 is penetrated in the first through hole and the second through hole, and can slide in the first through hole and the second through hole, a locking key 84 cooperating with the internal spline is provided in the middle of the trigger rod 83, and a first limiting structure is provided at one end of the trigger rod 83 facing the linear slide rail 11; One end of the lever 81 is rotatably connected to the rotating hinge seat 40, and the middle part is rotatably connected to the trigger rod 83 toward one end of the traction drive 50; the locking member 82 is used to lock the other end of the locking lever 81; the pressure plate 85 is arranged at the bottom of the linear slide rail 11, and a second limiting structure cooperating with the first limiting structure is provided on the side facing the trigger rod 83; a plurality of first elastic members 86 are arranged at intervals between the pressure plate 85 and the bottom of the linear slide rail 11, and are respectively connected to the pressure plate 85 and the bottom of the linear slide rail 11; the locking rod 87 is passed through the blind hole, and one end is fixedly connected to the pressure plate 85, and the other end cooperates with the external spline on the rotating shaft 12; the second elastic member 88 is arranged in the blind hole, and is connected or in contact with the locking rod 87, and is used to provide an elastic force to the locking rod 87 in the direction away from the external spline.

[0051] After the angle of the test piece is adjusted, the locking lever 81 is pressed in the direction of the turntable 30 and locked by the locking member 82, so that the trigger rod 83 slides, and the locking key 84 engages with the internal spline in the second through hole, thereby locking the turntable 30 and the rotating hinge seat 40; at the same time, the end of the trigger rod 83 contacts and presses the pressure plate 85, and the linear slider 20 and the turntable 10 are locked through the cooperation between the first limiting structure and the second limiting structure; at the same time, the pressure plate 85 drives the locking rod 87 to move, so that the locking rod 87 engages with the external spline on the rotating shaft 12, thereby locking the turntable 10 and the rotating shaft 12.

[0052] When the test is completed, the locking member 82 is unlocked from the locking lever 81, and the first elastic member 86 and the second elastic member 88 drive the driving pressure plate 85 and the locking rod 87 to move, so that the locking rod 87 is separated from the external spline on the rotating shaft 12; at the same time, the locking key 84 is separated from the internal spline in the second through hole; the pressure between the first limiting structure and the second limiting structure is also lost, and movement can occur; finally, the various components can move freely.

[0053] In this way, one-touch tightening can be achieved, which can avoid the angle error caused by separate tightening, and also facilitate the installation and disassembly of the specimen.

[0054] Furthermore, a friction pair structure is provided between the first limiting structure and the second limiting structure to facilitate quick locking and separation. There are two locking rods 87 which are respectively located on both sides of the rotating shaft 12 so that the linear slider 20 can lock the rotating shaft 12 at any position on the linear slide rail 11.

[0055] Furthermore, a threaded plug is provided at the bottom of the blind hole of the turntable 10, and a receiving hole is provided at one end of the locking rod 87 facing the second elastic member 88. The second elastic member 88 is a spring, and the receiving hole is a tapered hole, and the diameter of the hole bottom is slightly smaller than the diameter of the spring, while the diameter of the hole mouth is slightly larger than the diameter of the spring, so as to fix the spring and ensure the elastic force of the spring. When installing the spring, the threaded plug can be removed, and the spring can be inserted into the blind hole, and then the threaded plug can be installed.

[0056] Specifically, the traction driver 50 is an oil cylinder or a pneumatic cylinder to facilitate positioning and provide traction.

[0057] When measuring force and pressure on a test piece, the clamp 70 may be a fixed clamp that directly clamps and fixes the test piece.

[0058] When testing the pressure and vibration of the specimen, Figure 4 and Figure 5 As shown, the clamp 70 may include a first clamping assembly 71, a frame 72, a plurality of third elastic members 73 and a second clamping assembly 74, the first clamping assembly 71 is connected to the traction drive 50; the frame 72 is connected to the first clamping assembly 71; the plurality of third elastic members 73 are circumferentially arranged in the frame 72 to provide freedom of vibration; the second clamping assembly 74 is suspended in the frame 72 through the plurality of third elastic members 73 and is used to clamp the specimen.

[0059] When in use, the sensor for monitoring vibration can be installed at the required position such as the frame 72 and the second clamping assembly 74 .

[0060] In this way, different tests can be performed by simply replacing the fixture 70 or adding tooling to the existing fixture 70, which is more applicable.

[0061] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-dimensional test device for inclined cables in a wind tunnel laboratory, characterized in that: It includes at least one specimen fixing mechanism, and the specimen fixing mechanism includes: A turntable (10) is rotatably arranged on a working surface and is provided with a linear slide rail (11); A linear slide block (20) slidably cooperates with the linear slide rail (11); A rotating disk (30) is rotatably mounted on the linear slider (20) and has an annular slide rail (31) disposed on its outer circumference; A rotating hinge seat (40) rotatably disposed in the middle of the rotating disk (30); A traction driver (50), one end of which is rotatably connected to the rotating hinge seat (40); A lateral bracket (60), one end of which is connected to the middle of the traction drive (50), and the other end of which is provided with a ring rail slider, and is slidably matched with the annular slide rail (31) via the ring rail slider; A clamp (70) is provided at the other end of the traction driver (50) and is used to clamp the test piece; The turntable (10) is rotated by a rotating shaft (12) fixed on the working surface, and the rotating shaft (12) and the turntable (10), the linear slide rail (11) and the linear slide block (20), and the rotating hinge seat (40) and the turntable (30) are fastened and fixed by a linkage locking mechanism; The rotating shaft (12) is provided with an external spline, the rotating table (10) is provided with a blind hole, the external spline portion of the rotating shaft (12) is exposed in the blind hole, the rotating axis of the rotating hinge seat (40) is provided with a first through hole, the rotating disk (30) is provided with a second through hole corresponding to the first through hole, the second through hole is provided with an internal spline, and the linkage locking mechanism comprises: a trigger rod (83) which is inserted into the first through hole and the second through hole and is capable of sliding in the first through hole and the second through hole; a locking key (84) which cooperates with the internal spline is provided in the middle of the trigger rod (83); and a first limiting structure is provided at one end of the trigger rod (83) which faces the linear slide rail (11); A locking lever (81), one end of which is rotatably connected to the rotating hinge seat (40), and a middle portion of which is rotatably connected to the trigger rod (83) toward one end of the traction drive (50); A locking member (82) used to lock the other end of the locking lever (81); A pressure plate (85) is arranged at the bottom of the linear slide rail (11), and a second limiting structure cooperating with the first limiting structure is provided on a side facing the trigger rod (83); a plurality of first elastic members (86), arranged at intervals between the pressing plate (85) and the bottom of the linear slide rail (11), and respectively connected to the pressing plate (85) and the bottom of the linear slide rail (11); A locking rod (87) is inserted into the blind hole, one end of which is fixedly connected to the pressing plate (85) and the other end of which is engaged with an external spline on the rotating shaft (12); The second elastic member (88) is arranged in the blind hole and is connected to or in contact with the locking rod (87), and is used to provide an elastic force to the locking rod (87) in a direction away from the external spline.

2. The three-dimensional test device for the wind tunnel laboratory cable as claimed in claim 1, characterized in that: The lateral support comprises: An arc-shaped sleeve, one end of which is fixedly connected to the middle portion of the traction drive (50); An arc-shaped rod, one end of which is inserted into the arc-shaped sleeve and slidably cooperates with the arc-shaped sleeve, and the other end of which is fixedly connected to the ring rail slider; A first fastener, provided on the arc-shaped sleeve, for fixing the arc-shaped rod to the arc-shaped sleeve; Wherein, the arc-shaped rod is provided with a first scale for controlling the deflection angle of the traction drive.

3. The three-dimensional test device for the wind tunnel laboratory cable as claimed in claim 1, characterized in that: A friction pair structure is provided between the first limiting structure and the second limiting structure, and there are two locking rods (87) which are respectively located on two sides of the rotating shaft (12).

4. The three-dimensional test device for the wind tunnel laboratory cable as claimed in claim 1, characterized in that: The clamp (70) comprises: A first clamping assembly (71) connected to the traction drive (50); A frame (72) connected to the first clamping assembly (71); A plurality of third elastic members (73) arranged circumferentially within the frame (72); The second clamping assembly (74) is suspended in the frame (72) via a plurality of the third elastic members (73) and is used to clamp the test piece.

5. The three-dimensional test device for the wind tunnel laboratory cable as claimed in claim 1, characterized in that: The specimen fixing mechanism also includes: The force measuring module (51) is provided between the traction driver (50) and the clamp (70) and is used to detect the traction force applied by the clamp (70) to the test piece.

6. The three-dimensional test device for the wind tunnel laboratory stay cable according to claim 1, characterized in that: The wind tunnel laboratory cable-stayed three-dimensional test device further comprises an outer frame (90), two specimen fixing mechanisms are respectively arranged at the upper part and the lower part of the outer frame (90) and are used to fix two ends of the specimen, and the turntable (10) of each specimen fixing mechanism is rotatably arranged on the outer frame (90).

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