Wire-oriented elasticity test device, test system and use method

Abstract

The invention relates to the technical field of transmission conductor tests, in particular to a conductor-oriented elastic test device, a test system and a use method. A wire-oriented elastic test device comprises: at least two groups of elastic test assemblies arranged at intervals, including a first elastic test assembly and a second elastic test assembly; the first elastic test assembly comprises a first turntable; the first elastic test assembly comprises a first rotating disc, the second elastic test assembly comprises a second rotating disc, the first rotating disc and the second rotating disc are suitable for penetrating through the same power transmission conductor, the power transmission conductor is rotatably connected with the first rotating disc and the second rotating disc, and the first rotating disc and / or the second rotating disc are / is driven to perform planar motion and / or twisting motion. The invention provides a wire-oriented elastic test device, a wire-oriented elastic test system and a wire-oriented elastic test method, and aims to solve the problem that the torsional degree of freedom of a wire in a test device is often simplified or neglected, so that a real working condition is difficult to comprehensively reflect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power transmission conductor test, in particular to a conductor-oriented elastic test device, test system and use method. BACKGROUND

[0002] The overhead transmission line is long-term exposed to the complex and changeable natural wind environment, and is prone to produce icing galloping, sub-span oscillation and aeolian vibration and other wind-induced vibration phenomena under the action of wind, which is essentially a typical fluid-structure coupling vibration problem, the mechanism is complex, the influencing factors are numerous, and has significant nonlinear characteristics. The above-mentioned wind-induced vibration not only can cause conductor fatigue damage, hardware loosening and even fracture, but also can threaten the line operation safety and power supply reliability. Therefore, in-depth study on the wind-induced vibration mechanism of the transmission conductor has important engineering significance for wind-resistant design and operation and maintenance. As an effective means to study the wind-induced vibration problem, the wind tunnel test can systematically analyze the relationship between the wind field parameters and the structural response under controllable conditions. However, the icing galloping and other phenomena are caused by the mutual coupling and influence of conductor vibration and aerodynamic force. If the traditional rigid model test method is used, it is difficult to truly reflect the aerodynamic force change characteristics and dynamic response law of the conductor in the vibration process. Therefore, the aerodynamic elastic segment model is used to simulate the dynamic characteristics of the conductor in the wind tunnel in accordance with the similarity criterion, which can more truly reproduce the nonlinear vibration behavior of the conductor under the action of wind, and has become an important technical approach to study the wind-induced vibration mechanism of the conductor.

[0003] The existing aerodynamic elastic segment model test device is usually provided with horizontal and vertical springs at both ends of the model or in the support structure to simulate the stiffness characteristics of the conductor in the horizontal and vertical directions, so as to realize the vibration response of the conductor in the translation direction. However, in the actual transmission line, the torsional vibration and translational vibration of the conductor are often coupled with each other, especially under icing conditions, the torsional characteristics have important influence on the occurrence and development of galloping. In the existing test device, the torsional degree of freedom of the conductor is often simplified or ignored, and it is difficult to fully reflect the real working conditions. SUMMARY

[0004] The present application provides a conductor-oriented elastic test device, test system and use method to solve the problem that the torsional degree of freedom of the conductor in the test device is often simplified or ignored, and it is difficult to fully reflect the real working conditions.

[0005] In a first aspect, the present application provides a conductor-oriented elastic test device, comprising:

[0006] At least two groups of elastic test components are arranged at intervals, including a first elastic test component and a second elastic test component; The first elastic test component comprises a first turntable; The second elastic test assembly comprises a second rotating disc, and the first rotating disc and the second rotating disc are adapted to pass through the same power transmission conductor, and the power transmission conductor is rotatably connected with the first rotating disc and the second rotating disc respectively, and the first rotating disc and / or the second rotating disc is driven to perform planar motion and / or torsional motion.

[0007] By driving the first rotating disc and / or the second rotating disc to perform planar motion and / or torsional motion, the power transmission conductor can be subjected to planar motion or torsional motion alone or subjected to "planar motion + torsional motion", so as to ensure the torsion of the power transmission conductor and comprehensively reflect the real working condition.

[0008] In an optional embodiment, the first elastic test assembly comprises a first planar motion spring set, the first planar motion spring set comprises at least two planar motion springs, the included angle between adjacent planar motion springs is greater than or equal to 90°, one end of each planar motion spring is connected with the first rotating disc, and the other end is adapted to be connected with a fixed base.

[0009] In an optional embodiment, the first planar motion spring set further comprises a first planar motion spring, a second planar motion spring, a third planar motion spring and a fourth planar motion spring, the first planar motion spring and the second planar motion spring are arranged at an included angle of 90°, the second planar motion spring and the third planar motion spring are arranged at an included angle of 90°, the third planar motion spring and the fourth planar motion spring are arranged at an included angle of 90°, and the fourth planar motion spring and the first planar motion spring are arranged at an included angle of 90°.

[0010] In an optional embodiment, the first elastic test assembly further comprises a first torsional spring set, the first torsional spring set comprises at least one torsional spring, and the torsional spring is arranged on one side of the first rotating disc.

[0011] In an optional embodiment, the first torsional spring set comprises a first torsional spring, a second torsional spring, a third torsional spring and a fourth torsional spring, the first torsional spring and the first planar motion spring are arranged at an included angle of 45°, the second torsional spring and the second planar motion spring are arranged at an included angle of 45°, the third torsional spring and the third planar motion spring are arranged at an included angle of 45°, and the fourth torsional spring and the fourth planar motion spring are arranged at an included angle of 45°.

[0012] In an optional embodiment, the first elastic test assembly further comprises a first bearing, the first bearing is arranged between the first rotating disc and the power transmission conductor, and the inner side wall of the first bearing is arranged in abutment with the outer peripheral surface of the power transmission conductor.

[0013] In an alternative embodiment, the first inner ring of the first bearing extends a first fixing portion in a direction away from the first surface of the first rotating disc, the first fixing portion is provided with at least three fixing holes in the circumferential direction, and a fixing member is inserted into the fixing hole to fix the power transmission wire.

[0014] In an alternative embodiment, the first elastic test assembly further comprises a first rotating disc, the first rotating disc is arranged on the side of the first surface away from the first rotating disc, the first rotating disc is sleeved on the outer periphery of the power transmission wire, and at least one torsion plate is arranged on the outer periphery surface of the first rotating disc, one torsion plate corresponding to one torsion spring.

[0015] In a second aspect, the application further provides a test system comprising the above-mentioned wire-oriented elastic test device.

[0016] In a third aspect, the application further provides a use method of the wire-oriented elastic test device, the first rotating disc and / or the second rotating disc are driven to perform planar motion and torsional motion to simulate the shaking and torsion of the power transmission wire in the air environment. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the specific embodiments or prior art of the present application, the drawings needed in the specific embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0018] Figure 1 A schematic view of the wire-oriented elastic test device of the embodiment of the present application in a second surface perspective; Figure 2 A schematic view of the wire-oriented elastic test device of the embodiment of the present application in a first surface perspective; Figure 3 A schematic view of the first rotating disc of the embodiment of the present application in a second surface perspective; Figure 4 A schematic view of the first rotating disc of the embodiment of the present application in a first surface perspective; Figure 5 A top view of the first rotating disc of the embodiment of the present application; Figure 6 A schematic view of the first bearing of the embodiment of the present application; Figure 7 A top view of the first bearing of the embodiment of the present application; Figure 8 A front view of the first rotating disc of the embodiment of the present application; Figure 9 Figure 1 is a top view of a first rotating disc according to an embodiment of the present application.

[0019] BRIEF DESCRIPTION OF DRAWINGS 1, first rotating disc; 101, first through hole; 102, connecting hole; 103, fixed plate set; 1031, first fixed plate; 1032, second fixed plate; 104, first surface; 105, second surface; 2, first translational spring set; 201, first translational spring; 202, second translational spring; 203, third translational spring; 204, fourth translational spring; 3, fixed seat; 4, first bearing; 401, first inner ring; 402, first fixed part; 403, fixing piece; 5, first torsional spring set; 501, first torsional spring; 502, second torsional spring; 503, third torsional spring; 504, fourth torsional spring; 6, first rotating disc; 601, rotating disc body; 602, torsion plate. DETAILED DESCRIPTION

[0020] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0021] The embodiments of the present application will be described below with reference to the drawings. Figures 1 to 9

[0022] According to an embodiment of the present application, in one aspect, an elastic test device for a conductor is provided, comprising: at least two groups of elastic test components arranged at intervals, including a first elastic test component and a second elastic test component; the first elastic test component comprises a first rotating disc 1; the second elastic test component comprises a second rotating disc, the first rotating disc 1 and the second rotating disc are adapted to pass through the same power transmission conductor respectively, the power transmission conductor is respectively connected in rotation with the first rotating disc 1 and the second rotating disc, and the first rotating disc 1 and / or the second rotating disc is driven to perform planar motion and / or torsional motion.

[0023] By driving the first rotating disc 1 and / or the second rotating disc to perform planar motion and / or torsional motion, the power transmission conductor can be subjected to planar motion or torsional motion alone, or subjected to "planar motion + torsional motion", so as to ensure the torsion of the power transmission conductor and fully reflect the real working condition. It should be noted that the first elastic test component and the second elastic test component in the present embodiment are completely identical in structure.

[0024] In one embodiment, as Figure 1 , Figure 2 ​As shown, the first elastic test assembly comprises a first translational spring set 2, the first translational spring set 2 comprising at least two translational springs, the included angle of adjacent translational springs being greater than or equal to 90°, one end of each translational spring being connected with the first rotary disc 1, and the other end being adapted to be connected with the fixed seat 3. By the included angle of the at least two translational springs being greater than or equal to 90°, the support to the first rotary disc 1 is realized.

[0025] In one embodiment, as shown in Figure 1 , Figure 2 As shown, the first translational spring set 2 further comprises a first translational spring 201 (vertically arranged), a second translational spring 202 (horizontally arranged), a third translational spring 203 (vertically arranged), and a fourth translational spring 204 (horizontally arranged), the included angle of the first translational spring 201 and the second translational spring 202 being 90°, the included angle of the second translational spring 202 and the third translational spring 203 being 90°, the included angle of the third translational spring 203 and the fourth translational spring 204 being 90°, and the included angle of the fourth translational spring 204 and the first translational spring 201 being 90°. In this embodiment, as shown in Figure 1 , the first translational spring 201 is located below the first rotary disc 1, the second translational spring 202 is located to the right of the first rotary disc 1, the third translational spring 203 is located above the first rotary disc 1, and the fourth translational spring 204 is located to the left of the first rotary disc 1, the included angle of adjacent translational springs being 90°. As shown in Figure 3 , four connection holes 102 of equal arc length are arranged on the first rotary disc 1, one end of each translational spring extending into the connection hole 102 to realize the connection of the translational spring and the rotary disc. By arranging the first translational spring 201, the second translational spring 202, the third translational spring 203, and the fourth translational spring 204, the planar motion of the power transmission conductor in the direction perpendicular to the power transmission conductor is realized.

[0026] In this embodiment, the second elastic test assembly further comprises a second translational spring set, the second translational spring set comprising a fifth translational spring, a sixth translational spring, a seventh translational spring, and an eighth translational spring, the included angle of the fifth translational spring and the sixth translational spring being 90°, the included angle of the sixth translational spring and the seventh translational spring being 90°, the included angle of the seventh translational spring and the eighth translational spring being 90°, and the included angle of the eighth translational spring and the fifth translational spring being 90°. In this embodiment, as shown in Figure 1 , the fifth translational spring is located below the second rotary disc, the sixth translational spring is located to the right of the second rotary disc, the seventh translational spring is located above the second rotary disc, and the eighth translational spring is located to the left of the second rotary disc, the included angle of adjacent translational springs being 90°. As shown in Figure 3As shown, the second rotating disc is provided with four connection holes 102 arranged at equal radian, and one end of the translational spring is inserted into the connection hole 102 to realize the connection between the translational spring and the rotating disc. By arranging the fifth translational spring, the sixth translational spring, the seventh translational spring and the eighth translational spring, the planar movement of the power transmission wire in the direction perpendicular to the power transmission wire is realized, and the first translational spring group 2 and the second translational spring group are cooperated to realize the swing of the power transmission wire in the space, so as to simulate the swing working condition of the power transmission wire in the real environment.

[0027] In one embodiment, as shown in Figure 2 , Figure 4 As shown, the first elastic test assembly further comprises a first torsional spring group 5, and the first torsional spring group 5 comprises at least one torsional spring arranged on one side of the first rotating disc 1. In the embodiment, the torsional spring is arranged on one side of the first surface 104 of the first rotating disc 1.

[0028] In the embodiment, as shown in Figure 2 , Figure 4 and Figure 5 As shown, the first surface 104 of the first rotating disc 1 is provided with four fixed plate groups 103, one fixed plate group 103 is arranged corresponding to one connection hole 102, each fixed plate group 103 comprises a first fixed plate 1031 and a second fixed plate 1032, and the first fixed plate 1031 and the second fixed plate 1032 are arranged at 90°.

[0029] In one embodiment, as shown in Figure 2 , Figure 4 As shown, the first torsional spring group 5 comprises a first torsional spring 501, a second torsional spring 502, a third torsional spring 503 and a fourth torsional spring 504, the included angle between the first torsional spring 501 and the first translational spring 201 is arranged at 45°, the included angle between the second torsional spring 502 and the second translational spring 202 is arranged at 45°, the included angle between the third torsional spring 503 and the third translational spring 203 is arranged at 45°, and the included angle between the fourth torsional spring 504 and the fourth translational spring 204 is arranged at 45°.

[0030] In the embodiment, as shown in Figure 2 , Figure 4As shown, one end of the first torsion spring 501 is connected with the first fixed plate 1031 of one set of fixed plate groups 103 (the connecting hole 102 corresponding to the first translational spring 201), and the other end is connected with the second fixed plate 1032 of another set of fixed plate groups 103 (the connecting hole 102 corresponding to the second translational spring 202), so that the included angle between the first torsion spring 501 and the first translational spring 201 (or the second translational spring 202) is 45°. One end of the second torsion spring 502 is connected with the first fixed plate 1031 of one set of fixed plate groups 103 (the connecting hole 102 corresponding to the second translational spring 202), and the other end is connected with the second fixed plate 1032 of another set of fixed plate groups 103 (the connecting hole 102 corresponding to the third translational spring 203), so that the included angle between the second torsion spring 502 and the second translational spring 202 (or the third translational spring 203) is 45°. One end of the third torsion spring 503 is connected with the first fixed plate 1031 of one set of fixed plate groups 103 (the connecting hole 102 corresponding to the third translational spring 203), and the other end is connected with the second fixed plate 1032 of another set of fixed plate groups 103 (the connecting hole 102 corresponding to the fourth translational spring 204), so that the included angle between the third torsion spring 503 and the third translational spring 203 (or the fourth translational spring 204) is 45°. One end of the fourth torsion spring 504 is connected with the first fixed plate 1031 of one set of fixed plate groups 103 (the connecting hole 102 corresponding to the fourth translational spring 204), and the other end is connected with the second fixed plate 1032 of another set of fixed plate groups 103 (the connecting hole 102 corresponding to the first translational spring 201), so that the included angle between the fourth torsion spring 504 and the fourth translational spring 204 (or the first translational spring 201) is 45°. By arranging the first torsion spring group 5, the first rotating disc 1 will not only be shaken in a space range, but also be twisted by the torsion spring. It should be noted that the size of the torsion spring in the embodiment is related to the size, weight and target vibration frequency of the power transmission conductor, and different sizes of the power transmission conductor correspond to different sizes of the torsion spring.

[0031] In the embodiment, the first surface 104 of the second rotating disc is provided with four sets of fixed plate groups 103, one set of fixed plate groups 103 corresponds to one connecting hole 102, each set of fixed plate groups 103 includes a first fixed plate 1031 and a second fixed plate 1032, and the first fixed plate 1031 and the second fixed plate 1032 are arranged at an angle of 90°. In the embodiment, the second elastic test assembly further includes a second torsion spring 502 group, the second torsion spring 502 group includes a fifth torsion spring, a sixth torsion spring, a seventh torsion spring and an eighth torsion spring, the included angle between the fifth torsion spring and the fifth translational spring is 45°, the included angle between the sixth torsion spring and the sixth translational spring is 45°, the included angle between the seventh torsion spring and the seventh translational spring is 45°, and the included angle between the eighth torsion spring and the eighth translational spring is 45°.

[0032] In the embodiment, one end of the fifth torsion spring is connected with the first fixed plate 1031 of one set of fixed plate groups 103 (the connecting hole 102 corresponding to the fifth translation spring), and the other end is connected with the second fixed plate 1032 of another set of fixed plate groups 103 (the connecting hole 102 corresponding to the sixth translation spring), so that the fifth torsion spring is arranged at an angle of 45° with the fifth translation spring (or the sixth translation spring); one end of the sixth torsion spring is connected with the first fixed plate 1031 of one set of fixed plate groups 103 (the connecting hole 102 corresponding to the sixth translation spring), and the other end is connected with the second fixed plate 1032 of another set of fixed plate groups 103 (the connecting hole 102 corresponding to the seventh translation spring), so that the sixth torsion spring is arranged at an angle of 45° with the sixth translation spring (or the third translation spring 203); one end of the seventh torsion spring is connected with the first fixed plate 1031 of one set of fixed plate groups 103 (the connecting hole 102 corresponding to the seventh translation spring), and the other end is connected with the second fixed plate 1032 of another set of fixed plate groups 103 (the connecting hole 102 corresponding to the eighth translation spring), so that the seventh torsion spring is arranged at an angle of 45° with the seventh translation spring (or the eighth translation spring); one end of the eighth torsion spring is connected with the first fixed plate 1031 of one set of fixed plate groups 103 (the connecting hole 102 corresponding to the eighth translation spring), and the other end is connected with the second fixed plate 1032 of another set of fixed plate groups 103 (the connecting hole 102 corresponding to the fifth translation spring), so that the eighth torsion spring is arranged at an angle of 45° with the eighth translation spring (or the fifth translation spring).

[0033] In one embodiment, as shown in Figure 1 , Figure 6 and Figure 7 , the first elastic test assembly further comprises a first bearing 4, and the first bearing 4 is arranged between the first rotating disc 1 and the power transmission wire. The inner side wall of the first bearing 4 is arranged in abutment with the outer peripheral surface of the power transmission wire. The first bearing 4 is mainly used for fixing the power transmission wire model, and at the same time provides the free torsion condition of the power transmission wire. The first bearing 4 is smooth, has small torsion resistance, and can have small torsion direction damping.

[0034] In one embodiment, as shown in Figure 1 , Figure 6 and Figure 7 , the first inner ring 401 of the first bearing 4 extends and protrudes in the direction away from the first surface 104 of the first rotating disc 1, and the first fixed part 402 is arranged on the first inner ring 401. The annular direction (Y direction in the figure) of the first fixed part 402 is provided with at least three fixed holes, and a fixing member 403 is penetrated into the fixed holes. The fixing member 403 is used for fixing the power transmission wire. Specifically, the fixing member 403 is a top wire. Figure 7 In the embodiment, as shown in Figure 7 , the axial direction of the first fixed part 402 (the Z direction in the figure) is provided with a first fixed hole 4021 and a second fixed hole 4022.Figure 7 The number of fixing holes (in the X direction) is two spaced apart, meaning the first fixing part 402 has at least six fixing holes. In this embodiment, the first fixing part 402 and the fixing plate assembly 103 are arranged on the same side of the first turntable 1. It should be noted that, as Figure 2 , Figure 5 As shown, in this embodiment, the torsion spring along Figure 5 The diameter in the X direction is greater than the length of the fixed plate. Figure 5 (in the X direction), the first fixing part 402 along Figure 5 The length in the X direction is greater than or equal to (preferably equal to) the length of the first fixing part 402 along the X direction. Figure 5 The length of the extension in the X direction.

[0035] In this embodiment, the second elasticity test assembly further includes a second bearing. The second bearing is disposed between the second turntable and the power transmission line, and the inner wall of the second bearing is fitted against the outer circumferential surface of the power transmission line. In this embodiment, the second inner ring of the second bearing extends out of the second fixing part in a direction away from the first surface 104 of the second turntable. The fixing part has fixing holes arranged in the same manner as the first fixing part 402, and each fixing hole contains a fixing member 403.

[0036] In one embodiment, such as Figure 2 , Figure 8 and Figure 9 As shown, the first elasticity test assembly also includes a first rotating disk 6, which is disposed on the side of the first surface 104 opposite to the first turntable 1. The first rotating disk 6 is sleeved on the outer periphery of the power transmission conductor (the inner diameter of the first rotating disk 6 is equal to the inner diameter of the inner ring of the first bearing 4). At least one torsion plate 602 is provided on the outer peripheral surface of the first rotating disk 6, and one torsion plate 602 corresponds to one torsion spring. In this embodiment, the first fixing part 402 is located between the first rotating disk 6 and the first turntable 1. By twisting the torsion plate 602, the torsion spring is driven to apply a rotational torque to the first turntable 1.

[0037] In this embodiment, as Figure 8 and Figure 9 As shown, the outer circumference of the first rotating disk 6 is provided with four torsion plates 602 arranged with equal arcs. Due to the torsion spring along Figure 5 The diameter in the X direction is greater than the length of the fixed plate, allowing the torsion plate 602 to be inserted into the corresponding torsion spring. For example... Figure 9 As shown, the first rotating disk 6 has several fixing holes on its circumference, and a fixing member 403 is inserted into the fixing block to fix the power transmission wire.

[0038] In the embodiment, the second elastic test assembly further comprises a second rotating disc which is completely identical in structure to the first rotating disc 6, the second fixed part is located between the second rotating disc and the second rotating disc, and the outer circumferential surface of the second rotating disc is provided with four torsion plates 602 which are arranged at equal radian, and the diameter of the torsion spring is greater than the length of the fixed plate, so that the torsion plate 602 can be inserted into the corresponding torsion spring.

[0039] In the embodiment, the first rotating disc 1 and the second rotating disc are completely identical in structure size, the thickness of the first rotating disc 1 is greater than 3 mm, the first rotating disc 1 is circular and the diameter ranges from 5 mm to 35 mm (selected according to the size of the power transmission conductor), the fixed hole is in threaded rotating connection with the fixed part 403, and the inner diameter of the fixed hole is greater than 3 mm.

[0040] According to the embodiment of the application, in another aspect, the application further provides a test system comprising the above-mentioned conductor-oriented elastic test device.

[0041] A use method of a conductor-oriented elastic test device, comprising the following steps: (1) Assembling the same power transmission conductor, the first elastic test assembly and the second elastic test assembly to form the test device of the embodiment; (2) Placing in a wind tunnel and blowing the power transmission conductor to simulate a single horizontal direction motion working condition, a single vertical direction motion working condition, a single torsion motion working condition (applied to the torsion spring through the torsion plate 602), a horizontal direction + vertical direction motion working condition coupling, a horizontal direction + vertical direction + torsion motion working condition coupling, and carrying out comparative study on multiple working conditions, and systematically analyzing the occurrence condition, development law and response characteristics of the conductor wind-induced vibration under different dynamic characteristic combination conditions.

[0042] It should be noted that the elastic test device in the embodiment can select bearings, translational springs and torsion springs matched with the size structure and weight of the power transmission conductor.

[0043] The wire-oriented elastic test device and test system have the following advantages: (1) the power transmission wire can be subjected to planar motion or torsional motion, or subjected to "planar motion + torsional motion", to ensure the torsion of the power transmission wire, so as to fully reflect the real working condition; (2) the first bearing and the second bearing are arranged to realize the rotation of the power transmission wire in the torsional direction, and the first rotating disc and the second rotating disc are arranged to cooperate with the torsional spring to establish the torsional stiffness in the torsional direction; (3) the first rotating disc is arranged to cooperate with the translational spring (in the horizontal direction and the vertical direction) to realize the free vibration in the translational direction, and the frequency is kept consistent; (4) the torsional spring is arranged on the first rotating disc to decouple the torsional stiffness and the translational stiffness, and the horizontal, vertical and torsional stiffness can be differentiated and adjusted during the test process; (5) in the wind-induced vibration of the power transmission wire, in addition to the horizontal and vertical vibration, there is also torsional vibration, and there is obvious coupling mechanism in the three directions, the horizontal and vertical springs and the first bearing (independent bearing system) are used to realize the dynamic characteristics of the wire segment model in the three directions (horizontal, vertical and torsional), and the power transmission wire can realize synchronous vibration in the three directions during the test process; (6) the translational stiffness and the torsional stiffness are decoupled, that is, the translational spring only supports the corresponding direction stiffness and has no influence on the torsional stiffness, and the bearing and the torsional spring are combined to only provide the torsional stiffness without affecting the translational stiffness, so that the horizontal, vertical and torsional stiffness can be accurately adjusted during the test process, the nonlinear vibration wind tunnel test of the power transmission wire is carried out, the parameterized power transmission wire wind-induced vibration research is accurately carried out, and the power transmission wire wind-induced nonlinear vibration mechanism is determined.

[0044] As an alternative embodiment, a third elastic test assembly, a fourth elastic test assembly and more elastic test assemblies are further included, and the third elastic test assembly, the fourth elastic test assembly and the like have the same structure as the first elastic test assembly.

[0045] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A wire-oriented elastic test device adapted to be disposed in a wind tunnel, characterized by, The utility model relates to a kind of elastic test components, including: At least two groups of elastic test components, including first elastic test component and second elastic test component are arranged at intervals; The first elastic test component includes first rotating disc (1); The second elastic test component includes second rotating disc, and the first rotating disc (1) and the second rotating disc are adapted to pass through same transmission conductor respectively, and the transmission conductor is rotatably connected with the first rotating disc (1) and the second rotating disc respectively, and the first rotating disc (1) and / or the second rotating disc are driven to carry out plane motion and / or torsion motion.

2. The wire-oriented elastic testing device of claim 1, wherein, The first elastic test component includes first translational spring group (2), and the first translational spring group (2) includes at least two translational springs, the included angle of adjacent translational springs is greater than or equal to 90°, one end of each translational spring is connected with the first rotating disc (1), and the other end is adapted to be connected with fixed base (3).

3. The wire-oriented elastic testing device of claim 2, wherein, The first translational spring group (2) further includes first translational spring (201), second translational spring (202), third translational spring (203) and fourth translational spring (204), the included angle of the first translational spring (201) and the second translational spring (202) is 90°, the included angle of the second translational spring (202) and the third translational spring (203) is 90°, the included angle of the third translational spring (203) and the fourth translational spring (204) is 90°, and the included angle of the fourth translational spring (204) and the first translational spring (201) is 90°.

4. The wire-oriented elastic testing device of claim 3, wherein, The first elastic test component further includes first torsion spring group (5), and the first torsion spring group (5) includes at least one torsion spring, and the torsion spring is arranged on one side of the first rotating disc (1).

5. The wire-oriented elastic testing device of claim 4, wherein, The first torsion spring group (5) includes first torsion spring (501), second torsion spring (502), third torsional spring (503) and fourth torsion spring (504), the included angle of the first torsion spring (501) and the first translational spring (201) is 45°, the included angle of the second torsion spring (502) and the second translational spring (202) is 45°, the included angle of the third torsion spring (503) and the third translational spring (203) is 45°, and the included angle of the fourth torsion spring (504) and the fourth translational spring (204) is 45°.

6. The wire-oriented elastic testing device of claim 5, wherein, The first elastic test component further includes first bearing (4), and the first bearing (4) is arranged between the first rotating disc (1) and the transmission conductor, and the inner side wall of the first bearing (4) is arranged in close contact with the outer peripheral surface of the transmission conductor.

7. The wire-oriented elastic testing device of claim 6, wherein, The first inner ring (401) of the first bearing (4) extends outwards in the direction away from the first surface (104) of the first rotating disc (1), and the first fixed part (402) is arranged in the ring direction, and at least three fixed holes are arranged in the first fixed part (402), and the fixed part (403) is penetrated into the fixed hole, and the fixed part (403) is used for fixing the transmission conductor.

8. The wire-oriented elastic testing device of claim 5, wherein, The first elastic test assembly further comprises a first rotating disc (6) arranged on the side of the first surface (104) away from the first rotating disc (1), the first rotating disc (6) is sleeved on the outer periphery of the power transmission conductor, and at least one torsion plate (602) is arranged on the outer periphery of the first rotating disc (6), one torsion plate (602) corresponding to one torsion spring.

9. A test system, characterized by The power transmission conductor-oriented elastic test device comprises the first elastic test assembly.

10. A method of using a wire-oriented elastic test device for use with the wire-oriented elastic test device of claim 1, the method comprising: The first rotating disc (1) and / or the second rotating disc are driven to perform planar motion and torsion motion, so as to simulate the shaking and torsion of the power transmission conductor in the air environment.

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