Lead spacer fatigue test device

Abstract

The invention relates to the technical field of fatigue test devices, and particularly discloses a lead spacer fatigue test device which is characterized in that a plurality of supports are arranged left and right, and each support is provided with a fixing frame and a test assembly; the fixing frame is connected with the wire to tension two ends of the horizontal wire respectively; the testing assembly comprises a testing ring rotationally assembled on the support, a middle disc located in the testing ring and connected with a wire, a top block rotationally assembled on the testing ring, and a driving piece matched with the testing ring and the top block and driving the testing ring and the top block to rotate respectively, and a plurality of clamping grooves used for fixing the wire are formed in the middle disc in the circumferential direction; the inner diameter of the testing ring is larger than the outer diameter of the middle disc, the ejector block comprises a protruding part, and the protruding part is driven to enter the position between the testing ring and the middle disc when the ejector block rotates. The fatigue test device for the conductor spacer has the effects of simulating the stress condition of the spacer under the real working condition and improving the test precision.

Description

Technical Field

[0001] The invention relates to the technical field of fatigue testing devices, and in particular to a conductor spacer fatigue testing device. Background Art

[0002] Conductor spacers are key hardware used in high-voltage or ultra-high-voltage transmission lines. They are fixed between multiple conductors to maintain the distance between the conductors. They prevent conductors from colliding and entangled with each other due to wind, ice shedding, or short-circuit electromagnetic forces, thus avoiding short-circuit accidents. In addition, damping-type spacers can suppress breeze vibrations and sub-span oscillations by absorbing energy, reduce conductor fatigue wear, maintain the equivalent radius of the conductor, suppress corona losses, and improve transmission efficiency. The conductors continue to work under alternating stresses such as wind vibration and dancing, and the spacers need to withstand millions of cyclic loads. Fatigue failure may cause the conductors to break. Therefore, fatigue tests are required on conductor spacers to ensure the safety of transmission lines.

[0003] The patent document with the announcement number CN111208017B discloses a fatigue tolerance loading test device for spacer bars; it includes a conductor pre-tightening fixture and a conductor loading fixture; the conductor pre-tightening fixture and the conductor loading fixture respectively tension the left and right ends of the horizontal conductor, and are fixedly installed symmetrically along the left and right axes of the horizontal direction of the conductor; a pair of six-split spacer bars to be tested are installed symmetrically along the left and right axes of the tensioned conductor between the conductor pre-tightening fixture and the conductor loading fixture; a six-split loading fixture is fixedly installed in the middle of the conductor in the middle of the six-split spacer bars; the left and right sides of the six-split loading fixture are respectively connected to a servo vertical loading mechanism and a servo torsion loading mechanism; the servo vertical loading mechanism is used to provide a vertical vibration torque to the spacer bars on the conductor; the servo torsion loading mechanism is used to provide a torsion torque to the spacer bars on the conductor. The fatigue test of the spacer bars is performed by applying vertical vibration torque and torsion torque to the spacer bars.

[0004] However, the following problems still exist in this scheme. The purpose of fatigue test is to simulate the cyclic load that the spacer bar is subjected to in the actual service environment. In the actual use of the spacer bar, the stress on the spacer bar is relatively complex due to the irregular swing or shaking of the conductor. The above-mentioned prior art only performs fatigue test on the spacer bar by applying vertical vibration and torsional vibration to the spacer bar, or other prior art only performs vertical and horizontal vibration fatigue test on the spacer bar, resulting in relatively single stress on the spacer bar during the test, which cannot simulate the actual situation, that is, it cannot truly reflect the stress or strain level of the spacer bar in actual use, resulting in the measured fatigue life being much higher than the actual value, resulting in deviation of the test data. Summary of the invention

[0005] The present invention provides a conductor spacer fatigue test device, aiming to solve the problem in the related art that the actual stress condition of the spacer cannot be simulated, resulting in deviation of test data.

[0006] The fatigue test device for the conductor spacer of the present invention includes a plurality of brackets arranged horizontally side by side. Fixing frames and testing components are respectively provided on the brackets; the fixing frames are connected to the conductors to respectively tension the two ends of the horizontal conductor; the testing component includes: a testing ring rotatably assembled on the bracket, an intermediate disk located inside the testing ring and connected to the conductor, a top block rotatably assembled on the testing ring, and a driving member that cooperates with the testing ring and the top block to drive them to rotate respectively. A plurality of slots for fixing the conductor are circumferentially provided on the intermediate disk. The inner diameter of the testing ring is larger than the outer diameter of the intermediate disk. A protruding portion is provided on the side surface of the top block. When the top block rotates, the protruding portion is driven into the space between the testing ring and the intermediate disk; the driving member drives the top block to rotate around the intermediate disk through the testing ring. At the same time, the top block rotates itself to drive the protruding portion to rotate until it abuts against the side surface of the intermediate disk, pushing the intermediate disk to move in this direction. After the protruding portion is separated from the intermediate disk, the tensioned conductor drives the intermediate disk to reset, so as to drive the spacer to vibrate.

[0007] The effect is that the fixing frames are connected to the two ends of the conductor, making the conductor in a tensioned state. At the same time, the conductor drives the intermediate disk to be located between the testing rings. At this time, the intermediate disk and the testing rings are arranged at intervals, and the spacer is installed on the conductor to support the conductor. During the test, the driving member drives the testing ring to rotate around the intermediate disk, and the testing ring drives the top block to rotate around the intermediate disk accordingly. At the same time, the driving member drives the top block to rotate itself. When the top block rotates itself, it drives the protruding portion to rotate until it cooperates with the intermediate disk, and drives the intermediate disk to move in the direction away from the top block. After the protruding portion is separated from the intermediate disk, the tensioned conductor drives the intermediate disk to reset, realizing the vibration in this direction. As the top block rotates with the testing ring, it cooperates with various parts on the intermediate disk in turn during the process, driving the intermediate disk to vibrate in different directions, so as to simulate the force condition of the spacer during the irregular vibration or swing of the conductor under actual working conditions, thereby improving the test accuracy.

[0008] Preferably, the intermediate disk includes a receiving portion and a sliding portion. A plurality of sliding portions are correspondingly provided for a plurality of slots. The slots are opened on the sliding portion. The sliding portion is slidably arranged on the receiving portion along the direction towards the center of the receiving portion. An elastic member connecting the two is arranged between the sliding portion and the receiving portion. The elastic member is used to drive the end of the sliding portion away from the center of the receiving portion and the outer side of the receiving portion to be on the same circumferential surface. The protruding portion abuts against the receiving portion to drive a plurality of conductors to vibrate simultaneously, and abuts against the sliding portion to drive a single conductor to vibrate.

[0009] The effect is that when the top block rotates with the testing ring, it rotates around the receiving portion and the sliding portion. That is, when the top block rotates itself, it will respectively abut against the receiving portion or the sliding portion. When the protruding portion abuts against the receiving portion, it drives a plurality of conductors to vibrate simultaneously. When the protruding portion abuts against the sliding portion, it drives a single conductor to vibrate. That is, during the process, a plurality of conductors vibrate simultaneously and a single conductor vibrates alternately, so that the force received by the spacer is closer to the actual working condition.

[0010] Preferably, the test ring includes a test outer ring and a test inner ring arranged coaxially. The test inner ring is rotationally engaged with the test outer ring. The top block is rotatably assembled on the test outer ring. The driving member includes a linkage member and a differential member. The linkage member is arranged between the test inner ring and the top block and connects the two. The differential member connects the test inner ring and the test outer ring to drive the test inner ring and the test outer ring to rotate in the same direction but at different speeds. The relative rotation of the test inner ring with respect to the test outer ring drives the top block to rotate self - rotatably through the linkage member.

[0011] The effect is that the driving member drives the test outer ring and the test inner ring to rotate synchronously in the same direction. At the same time, under the action of the differential member, the test inner ring can rotate relative to the test outer ring. When the test inner ring rotates relative to the test outer ring, the linkage member drives the top block to rotate so that the convex part rotates between the test ring and the middle disc to drive the wire to vibrate.

[0012] Preferably, the linkage member includes a gear ring and a gear. The gear ring is arranged coaxially inside the test inner ring, and the gear is arranged coaxially with the top block. The gear meshes with the gear ring.

[0013] The effect is that when the test inner ring rotates relative to the test outer ring, the gear ring rotates relative to the gear, and the rotation of the gear drives the top block to rotate.

[0014] Preferably, the differential member includes a pulley, a first belt, and a second belt. The pulley is circumferentially provided with a first annular groove and a second annular groove. The diameters of the first annular groove and the second annular groove are different. The first belt is sleeved outside the pulley and the test outer ring, and the second belt is sleeved outside the pulley and the test inner ring. The first belt cooperates with the first annular groove, and the second belt cooperates with the second annular groove.

[0015] The effect is that the pulley drives the test outer ring and the test inner ring to rotate in the same direction at the same time through the first belt and the second belt. However, since the diameters of the first annular groove and the second annular groove are different, although the test outer ring and the test inner ring rotate in the same direction, their rotation speeds are different, so as to realize the relative rotation of the test inner ring with respect to the test outer ring, and further drive the top block to rotate.

[0016] Preferably, the top block includes a mounting rod and a sliding rod. The mounting rod is rotationally engaged with the test outer ring. The gear is arranged coaxially with the mounting rod. A sliding groove is formed in the mounting rod. The sliding rod slides in the sliding groove along a direction perpendicular to the axis of the mounting rod. The end of the sliding rod is connected to the convex part. A screw rod is fixedly arranged inside the mounting rod along the sliding direction of the sliding rod. A relief groove is formed at one end of the sliding rod away from the convex part. The end of the screw rod extends into the relief groove. A nut is assembled outside the screw rod, and the nut abuts against the inner wall of the relief groove to fix the convex part.

[0017] The effect is that by moving the sliding rod, the sliding rod drives the convex part to move, so that the convex part moves closer to or away from the mounting rod, that is, the length of the convex part extending out of the mounting rod is adjusted to adjust the vibration amplitude of the receiving part and the sliding part.

[0018] Preferably, the slide bar passes through the mounting rod, one end of the slide bar away from the protrusion extends to the outside of the mounting rod, and the length of the slide bar extending from the mounting rod is less than the distance between the test ring and the intermediate disk.

[0019] The effect is that the length of the end of the slide rod away from the protrusion is set to be smaller than the distance between the test ring and the middle disk, so as to avoid the end of the slide rod away from the protrusion contacting the middle disk when the top block rotates, thereby reducing the mutual interference between the slide rod and the middle disk.

[0020] Preferably, a mounting groove is opened on the outer circumference of the test outer ring, the test inner ring is rotatably assembled in the mounting groove, a placement groove connected to the mounting groove is opened in the test outer ring, the top block is rotatably assembled in the placement groove, and the side surface of the gear extends into the mounting groove to mesh with the gear ring.

[0021] The effect is that when the test inner ring rotates relative to the test outer ring, it rotates in the installation groove, and then cooperates with the gear ring and the gear to drive the top block to rotate.

[0022] Preferably, the driving member further comprises a power member, an intermediate wheel, and an intermediate belt. The intermediate wheel is arranged at the output end of the power member, and the intermediate belt is sleeved on the outside of the intermediate wheel and the pulley.

[0023] The effect is that the power member drives the intermediate belt to rotate through the intermediate wheel, and the rotation of the intermediate belt drives the pulley to rotate, thereby driving the test inner ring and the test outer ring to rotate.

[0024] Preferably, a plurality of elastic members are provided corresponding to the plurality of sliding parts, and the elastic members are used to drive the sliding parts to slide away from the center of the receiving part.

[0025] The effect is that by providing a plurality of elastic members, the plurality of sliding parts are independent of each other, that is, each sliding part can move relative to the receiving part so as to drive a single wire to vibrate.

[0026] Beneficial effects: 1. By setting a top block on the test ring, while rotating around the middle disk, the top block rotates on its own. When rotating, the top block drives the protrusion to cooperate with the middle disk to drive the middle disk to vibrate in this direction. At the same time, as the test ring continues to rotate, the protrusion is driven to abut against different positions on the middle disk, thereby driving the middle disk to vibrate in different directions, so as to simulate the stress condition of the spacer rod under actual working conditions and improve the test accuracy.

[0027] 2. The intermediate disk is provided with a receiving part and a sliding part. When the test ring drives the top block to rotate, the top block rotates itself and drives the convex part to abut against the receiving part or the sliding part in sequence. At the same time, the top block rotates around the receiving part and the sliding part. When the convex part abuts against the receiving part, it drives multiple wires to vibrate in this direction simultaneously. When the convex part abuts against the sliding part, it drives a single wire to vibrate in this direction. And as the top block rotates with the test ring, the convex part abuts against different positions on the receiving part and each sliding part respectively, so that the vibration direction of the wire continuously changes to simulate the force condition of the spacer damper under real working conditions.

[0028] 3. The sliding rod is slidably assembled on the mounting rod, and the sliding rod is connected to the convex part. The position of the convex part can be adjusted by moving the sliding rod, and then the distance between the convex part rotating completely to between the test ring and the intermediate disk can be controlled. Furthermore, the formation of the convex part pushing the intermediate disk to move can be controlled to adjust the vibration amplitude of the intermediate disk. At the same time, the vibration frequency can be adjusted by adjusting the rotation speed of the power component to test the spacer damper under different working conditions.

[0029] 4. By setting different diameters of the first annular groove and the second annular groove, the test inner ring and the test outer ring have different speeds while rotating in the same direction, forming a speed difference between them, so that the test inner ring rotates relative to the test outer ring, and then drives the top block to rotate itself. At the same time, the rotation speed of the test inner ring relative to the test outer ring can be adjusted by adjusting the ratio of the diameters of the first annular groove and the second annular groove, so as to adjust the rotation speed of the top block, and further adjust the vibration frequency of the intermediate disk. Description of the Drawings

[0030] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present invention.

[0031] Figure 2 It is a three-dimensional view of the overall structure in the embodiment of the present invention.

[0032] Figure 3 It is a schematic diagram of the connection between the intermediate disk and the wire in the embodiment of the present invention.

[0033] Figure 4 It is a schematic diagram of the structure of the test ring and the intermediate disk in the embodiment of the present invention.

[0034] Figure 5 It is an exploded view of the test outer ring and the test inner ring in the embodiment of the present invention.

[0035] Figure 6 It is a partial exploded view of the test outer ring and the test inner ring in the embodiment of the present invention.

[0036] Figure 7 It is a schematic diagram of the structure of the driving part in the embodiment of the present invention.

[0037] Figure 8 It is a schematic diagram of the state when the convex part is separated from the middle disk in the embodiment of the present invention.

[0038] Figure 9 It is a schematic structural diagram of the pulley in the embodiment of the present invention.

[0039] Figure 10 It is a cross-sectional view of the middle disk in the embodiment of the present invention.

[0040] Figure 11 It is a cross-sectional view of the mounting rod and the convex part in the embodiment of the present invention.

[0041] Reference numerals: 01, wire; 02, spacer; 1, bracket; 11, mounting seat; 2, fixing frame; 3, test component; 4, test ring; 41, outer test ring; 411, mounting groove; 412, placement groove; 42, inner test ring; 5, middle disk; 51, receiving part; 511, receiving groove; 52, sliding part; 521, clamping groove; 522, elastic member; 6, top block; 61, mounting rod; 611, sliding groove; 612, screw; 62, sliding rod; 621, relief groove; 622, receiving groove; 7, driving member; 71, linkage member; 711, gear ring; 712, gear; 72, differential member; 721, pulley; 722, first belt; 723, second belt; 724, first annular groove; 725, second annular groove; 73, power member; 74, intermediate wheel; 75, intermediate belt; 8, convex part. Detailed implementation manners

[0042] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0043] As Figures 1 to 11 shown, the fatigue test device for the wire spacer of the present invention includes a bracket 1, a fixing frame 2, and a test component 3. A plurality of brackets 1 are arranged side by side left and right. In this embodiment, three brackets are provided. Two fixing frames 2 are provided and are respectively installed on the two edge brackets 1, and the test component 3 is located on the middle bracket 1. The fixing frame 2 is connected to both ends of the wire 01 and drives the wire 01 to be tensioned in the horizontal direction. The test component 3 is connected to the wire 01, and a spacer 02 is assembled on the wire 01. The test component 3 drives the wire 01 to vibrate to simulate the state of the wire 01 under normal conditions and perform a fatigue test on the spacer 02.

[0044] Referring to Figure 1 , Figure 2 , a mounting seat 11 is provided on the bracket 1 corresponding to the test component 3, and the test component 3 is installed on the mounting seat 11.

[0045] Referring to Figure 3 , Figure 4 , Figure 5 , Figure 6 , the test component 3 includes: a test ring 4, an intermediate disk 5, a top block 6, and a driving member 7. The test ring 4 is rotatably connected to the mounting seat 11, that is, the test ring 4 is rotationally assembled on the bracket 1 through the mounting seat 11. The intermediate disk 5 is located inside the test ring 4. A plurality of card slots 521 for fixing the wire 01 are circumferentially formed on the intermediate disk 5. The wire 01 passes through the card slots 521 and is connected to the intermediate disk 5. The outer diameter of the intermediate disk 5 is smaller than the inner diameter of the test ring 4, that is, there is a gap between the outer side of the intermediate disk 5 and the inner side of the test ring 4. The tensioned wire 01 drives the intermediate disk 5 and the test ring 4 to be in a coaxial state. The top block 6 is rotatably arranged on the test ring 4. The driving member 7 is arranged on the bracket 1, and the driving member 7 cooperates with the test ring 4 and the top block 6 respectively, and drives the two to rotate respectively.

[0046] Referring to Figure 6 , Figure 7 , Figure 8 , a protrusion 8 is provided on the top block 6. The protrusion 8 is located on the side surface of the top block 6. When the driving member 7 drives the top block 6 to rotate self - rotatably, it drives the protrusion 8 to rotate between the test ring 4 and the intermediate disk 5. When the protrusion 8 completely rotates between the test ring 4 and the intermediate disk 5, the length of the protrusion 8 extending out of the test ring 4 is greater than the distance between the test ring 4 and the intermediate disk 5. When the protrusion 8 abuts against the intermediate disk 5, it pushes the intermediate disk 5 to move in this direction.

[0047] During the test, the driving member 7 drives the test ring 4 to rotate. The rotation of the test ring 4 drives the top block 6 to rotate around the intermediate disk 5. At the same time, the driving member 7 drives the top block 6 to rotate self - rotatably. The top block 6 drives the protrusion 8 to rotate to cooperate with the intermediate disk 5, driving the intermediate disk 5 to move in a direction away from the top block 6. When the protrusion 8 rotates to be separated from the intermediate disk 5, the tensioned wire 01 drives the intermediate disk 5 to reset, completing one vibration in this direction. As the test ring 4 continues to rotate, it drives the top block 6 to rotate to correspond to different positions on the side surface of the intermediate disk 5. At the same time, the top block 6 drives the intermediate disk 5 to move in different directions through the protrusion 8, so that the intermediate disk 5 vibrates periodically in multiple directions to simulate the actual working conditions of the spacer 02 and improve the test accuracy.

[0048] Referring to Figure 8 , Figure 10, the middle disk 5 includes a receiving portion 51 and a sliding portion 52. The receiving portion 51 is arranged in a circular shape, and a receiving groove 511 is formed on the receiving portion 51. The sliding portion 52 is arranged in the receiving groove 511 and is slidably arranged in the receiving groove 511 along the direction towards the center of the receiving portion 51. A plurality of sliding portions 52 are circumferentially arranged on the receiving portion 51, and the plurality of sliding portions 52 are arranged in one-to-one correspondence with a plurality of clamping grooves 521. The clamping grooves 521 are arranged on the sliding portions 52.

[0049] Refer to Figure 8 , Figure 10 , an elastic member 522 is arranged between the sliding portion 52 and the receiving portion 51. The elastic member 522 is arranged as a spring, and the spring is respectively connected to the sliding portion 52 and the receiving portion 51. The elastic member 522 is used to drive the sliding portion 52 to slide along the direction away from the center of the receiving portion 51. The side of the sliding portion 52 facing away from the center of the receiving portion 51 is arranged in an arc shape. In the initial state, the elastic member 522 drives the arc side of the sliding portion 52 to be on the same circumferential surface as the outer side of the receiving portion 51. A plurality of elastic members 522 are arranged corresponding to the plurality of sliding portions 52, that is, each sliding portion 52 moves relative to the receiving portion 51.

[0050] When the top block 6 rotates with the test ring 4, it will sequentially pass through a plurality of receiving portions 51. When the top block 6 rotates self - sufficiently, it will drive the convex portion 8 to abut against the middle disk 5 or the receiving portion 51. When the convex portion 8 abuts against the receiving portion 51, it drives a plurality of conducting wires 01 to vibrate simultaneously in this direction. When the convex portion 8 abuts against the sliding portion 52, it drives the sliding portion 52 to move along the direction towards the center of the receiving portion 51, driving a single conducting wire 01 corresponding to the sliding portion 52 to vibrate. To simulate the stress conditions of the spacer 02 under various working conditions and further improve the test accuracy.

[0051] Refer to Figure 4 , Figure 5 , Figure 6 , the test ring 4 includes a test outer ring 41 and a test inner ring 42. The test outer ring 41 is rotatably connected to the mounting base 11, and the test inner ring 42 is rotationally matched with the test outer ring 41. The driving member 7 includes a linkage member 71 and a differential member 72. The linkage member 71 is arranged between the test inner ring 42 and the top block 6 and connects the two. The differential member 72 connects the test inner ring 42 and the test outer ring 41 to drive the test inner ring 42 and the test outer ring 41 to rotate in the same direction, but at different speeds, so that the test inner ring 42 rotates relative to the test outer ring 41. When the test inner ring 42 rotates relative to the test outer ring 41, the top block 6 is driven to rotate self - sufficiently through the linkage member 71.

[0052] Refer to Figure 6 , Figure 7 , Figure 8, the linkage member 71 includes a gear ring 711 and a gear 712. The gear ring 711 is coaxially arranged inside the test inner ring 42, the gear 712 is coaxially arranged with the top block 6, and the gear 712 meshes with the gear ring 711. When the test inner ring 42 rotates relative to the test outer ring 41, the gear ring 711 rotates relative to the gear 712, and then drives the top block 6 to rotate through the gear 712, so that the top block 6 rotates while rotating with the test inner ring 42. An installation groove 411 is circumferentially formed on the outer side of the test outer ring 41, the test inner ring 42 is rotationally assembled in the installation groove 411, a placement groove 412 is formed on the test outer ring 41, the placement groove 412 communicates with the installation groove 411, the top block 6 is rotationally assembled in the placement groove 412, the gear 712 is also arranged in the placement groove 412, and the side surface of the gear 712 extends into the placement groove 412 to cooperate with the gear ring 711.

[0053] Refer to Figure 5 , Figure 9 , the differential member 72 includes a pulley 721, a first belt 722, and a second belt 723. An annular groove one 724 and an annular groove two 725 are formed on the pulley 721. The annular groove one 724 and the annular groove two 725 are both coaxially arranged with the pulley 721, and the diameters of the annular groove one 724 and the annular groove two 725 are different. The first belt 722 corresponds to the test outer ring 41, the second belt 723 corresponds to the test inner ring 42. The first belt 722 is sleeved outside the pulley 721 and the test outer ring 41, and the second belt 723 is sleeved outside the pulley 721 and the test inner ring 42. The first belt 722 cooperates with the annular groove one 724, and the second belt 723 cooperates with the annular groove two 725.

[0054] Refer to Figure 5 , the driving member 7 further includes: a power member 73, an intermediate wheel 74, and an intermediate belt 75. The power member 73 is set as a motor, the output end of the power member 73 is connected to the intermediate wheel 74, and the intermediate belt 75 is sleeved outside the intermediate wheel 74 and the pulley 721. The power member 73 drives the intermediate belt 75 to rotate through the intermediate wheel 74, drives the pulley 721 to rotate through the intermediate belt 75, and then drives the test outer ring 41 and the test inner ring 42 to rotate.

[0055] The power member 73 drives the pulley 721 to rotate. The rotation of the pulley 721 drives the test outer ring 41 to rotate through the first belt 722 and drives the test inner ring 42 to rotate through the second belt 723. At the same time, the diameters of the annular groove one 724 and the annular groove two 725 are different, so that there is a speed difference between the test outer ring 41 and the test inner ring 42, that is, the test inner ring 42 can rotate relative to the test outer ring 41, and then drive the top block 6 to rotate. In this embodiment, the diameter of the annular groove one 724 is set to be smaller than the diameter of the annular groove two 725, that is, the rotation speed of the test inner ring 42 is greater than the rotation speed of the test outer ring 41, so that the gear ring 711 can rotate relative to the gear 712 to drive the top block 6 to rotate.

[0056] Refer to Figure 5 and Figure 9 The first annular groove 724 and the second annular groove 725 are arranged along the axial direction of the pulley 721. There are two first annular grooves 724, and the second annular groove 725 is arranged between the two first annular grooves 724. At the same time, there are also two first belts 722. By providing two first belts 722 and the first annular grooves 724, the stability of the rotation of the test outer ring 41 is improved. In addition, the installation groove 411 is located between the two first belts 722, that is, corresponding to the center of the test inner ring 42 and the test outer ring 41. The test inner ring 42 is rotationally matched with the test outer ring 41 through the installation groove 411. At the same time, the bottom of the test inner ring 42 and the bottom of the test outer ring 41 are both rotationally matched with the mounting seat 11. The mounting seat 11 supports the test inner ring 42 and the test outer ring 41 at the same time, ensuring that the test inner ring 42 and the test outer ring 41 rotate in the same direction and the stability when the test inner ring 42 rotates relative to the test outer ring 41.

[0057] In addition, the diameter ratio of the first annular groove 724 and the second annular groove 725 can be set to adjust the rotation speed of the test inner ring 42 relative to the test outer ring 41, and then adjust the rotation speed of the top block 6 rotating itself. To adjust the frequency of the vibration of the top block 6 driving the intermediate disk 5.

[0058] Refer to Figure 8 and Figure 11 The top block 6 includes a mounting rod 61 and a sliding rod 62. The mounting rod 61 is rotationally matched with the test outer ring 41. The gear 712 is coaxially arranged outside the mounting rod 61. A chute 611 is provided on the mounting rod 61. The sliding rod 62 is slidably assembled in the chute 611, and the sliding rod 62 slides in the chute 611 along the direction perpendicular to the axis of the mounting rod 61. The end of the sliding rod 62 is connected to the convex portion 8. A relief groove 621 is provided at the end of the sliding rod 62 facing away from the convex portion 8.

[0059] Refer to Figure 11 A receiving groove 622 is provided on the sliding rod 62. A screw rod 612 is fixedly arranged in the mounting rod 61. The screw rod 612 is arranged along the sliding direction of the sliding rod 62, and the screw rod 612 is located in the receiving groove 622. A relief groove 621 is provided at the end of the sliding rod 62 facing away from the convex portion 8, and the end of the screw rod 612 extends into the relief groove 621. A nut is assembled outside the screw rod 612.

[0060] Move the sliding rod 62 to adjust the length of the part of the convex portion 8 extending out of the mounting rod 61, and then adjust the amplitude of the vibration of the receiving portion 51 and the sliding portion 52. After the adjustment is completed, rotate the nut so that the side surface of the nut abuts against the inner wall of the relief groove 621. The nut and the screw rod 612 cooperate to fix the sliding rod 62, and then fix the convex portion 8.

[0061] Refer to Figure 8 andFigure 11 The slide bar 62 is arranged through the mounting rod 61 to adjust and fix the protrusion 8. The length of the end of the slide bar 62 away from the protrusion 8 extending out of the mounting rod 61 is less than the distance between the test ring 4 and the middle disk 5, that is, when the top block 6 rotates, the slide bar 62 will not contact the middle disk 5, reducing the phenomenon of the slide bar 62 interfering with the test.

[0062] Reference Figure 1 , Figure 2 The fixing frame 2 includes a fixing ring and a connecting sleeve arranged on the fixing ring. The fixing ring is connected to the bracket 1. A plurality of connecting sleeves are arranged around the fixing ring, and the plurality of connecting sleeves are arranged one by one with the plurality of wires 01. The connecting sleeve is connected to the wire 01 to support the wire 01. In other embodiments, the fixing ring can be arranged to slide with the bracket 1, and the fixing ring slides in a direction away from the middle disk 5. When installing the wire 01, the wire 01 can be first inserted into and fixed in the connecting sleeve, and then the fixing ring is moved to tension the wire 01. In addition, a cylinder for driving the fixing ring to move can be arranged on the bracket 1. The cylinder body of the cylinder is fixedly connected to the bracket 1, and the piston rod of the cylinder is connected to the fixing ring. The cylinder pushes the fixing ring to move to tension the wire 01, so as to improve the installation efficiency.

[0063] The implementation principle of the present invention is as follows: the power member 73 drives the pulley 721 to rotate through the intermediate wheel 74 and the intermediate belt 75, and the pulley 721 drives the test outer ring 41 and the test inner ring 42 to rotate through the belt 1 722 and the belt 2 723 respectively, and at the same time, under the action of the annular groove 1 724 and the annular groove 2 725 of different diameters, the test inner ring 42 and the test outer ring 41 rotate in the same direction, and at the same time, the test inner ring 42 rotates relative to the test outer ring 41, and the rotation of the test outer ring 41 drives the top block 6 to rotate around the intermediate disk 5, and the rotation of the test inner ring 42 relative to the test outer ring 41 drives the top block 6 to rotate, and when the top block 6 rotates, it drives its protrusion 8 to rotate to cooperate with the intermediate disk 5, so as to drive the intermediate disk 5 to vibrate along this direction, and as the top block 6 rotates to different positions of the intermediate disk 5, it drives the intermediate disk 5 to vibrate along different directions.

[0064] In addition, when the protrusion 8 rotates to between the test outer ring 41 and the middle disk 5, it abuts against the receiving portion 51 and the sliding portion 52 respectively. When abutting against the receiving portion 51, it drives multiple conductors 01 to vibrate simultaneously, and when abutting against the sliding portion 52, it drives a single conductor 01 to vibrate. This simulates the stress of the spacer bar 02 under real working conditions and improves the test accuracy.

[0065] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A fatigue test device for a conductor spacer, comprising a plurality of brackets (1) arranged horizontally from left to right, characterized in that, A fixing bracket (2) and a testing component (3) are respectively arranged on the bracket (1). The fixing bracket (2) is connected to the wire (01) to respectively tension the two ends of the horizontal wire (01). The testing component (3) includes: a testing ring (4) rotatably assembled on the bracket (1), an intermediate disk (5) located inside the testing ring (4) and connected to the wire (01), a top block (6) rotatably assembled on the testing ring (4), and a driving member (7) cooperating with the testing ring (4) and the top block (6) to drive them to rotate respectively. A plurality of card slots (521) for fixing the wire (01) are circumferentially formed on the intermediate disk (5). The inner diameter of the testing ring (4) is larger than the outer diameter of the intermediate disk (5). A convex portion (8) is arranged on the side surface of the top block (6). When the top block (6) rotates, the convex portion (8) is driven to enter between the testing ring (4) and the intermediate disk (5). The driving member (7) drives the top block (6) to rotate around the intermediate disk (5) through the testing ring (4). At the same time, the self-rotation of the top block (6) drives the convex portion (8) to rotate until it abuts against the side surface of the intermediate disk (5), pushing the intermediate disk (5) to move in this direction. After the convex portion (8) is separated from the intermediate disk (5), the tensioned wire (01) drives the intermediate disk (5) to reset, so as to drive the spacer (02) to vibrate.

2. The fatigue test device for conductor spacer according to claim 1, wherein The intermediate disk (5) includes a receiving portion (51) and a sliding portion (52). A plurality of sliding portions (52) corresponding to a plurality of card slots (521) are arranged. The card slots (521) are formed on the sliding portion (52). The sliding portion (52) is slidably arranged on the receiving portion (51) along the direction towards the center of the receiving portion (51). An elastic member (522) connecting the two is arranged between the sliding portion (52) and the receiving portion (51). The elastic member (522) is used to drive the end of the sliding portion (52) away from the center of the receiving portion (51) to be on the same circumferential surface as the outer side of the receiving portion (51). When the convex portion (8) abuts against the receiving portion (51), a plurality of wires (01) are driven to vibrate simultaneously. When the convex portion (8) abuts against the sliding portion (52), a single wire (01) is driven to vibrate.

3. The fatigue test device for conductor spacer according to claim 1, wherein The testing ring (4) includes a testing outer ring (41) and a testing inner ring (42) arranged coaxially. The testing inner ring (42) is rotationally matched with the testing outer ring (41). The top block (6) is rotatably assembled on the testing outer ring (41). The driving member (7) includes a linkage member (71) and a differential member (72). The linkage member (71) is arranged between the testing inner ring (42) and the top block (6) and connects the two. The differential member (72) connects the testing inner ring (42) and the testing outer ring (41) to drive the testing inner ring (42) and the testing outer ring (41) to rotate in the same direction but at different speeds. The relative rotation of the testing inner ring (42) with respect to the testing outer ring (41) drives the top block (6) to rotate self.

4. The fatigue test device for conductor spacer according to claim 3, wherein The linkage member (71) includes a gear ring (711) and a gear (712). The gear ring (711) is coaxially arranged inside the testing inner ring (42). The gear (712) is coaxially arranged with the top block (6). The gear (712) meshes with the gear ring (711).

5. The fatigue test device for conductor spacer according to claim 3, characterized in that, The differential component (72) includes a pulley (721), a first belt (722), and a second belt (723). An annular groove one (724) and an annular groove two (725) are circumferentially formed on the pulley (721). The diameters of the annular groove one (724) and the annular groove two (725) are different. The first belt (722) is sleeved outside the pulley (721) and the test outer ring (41), and the second belt (723) is sleeved outside the pulley (721) and the test inner ring (42). The first belt (722) cooperates with the annular groove one (724), and the second belt (723) cooperates with the annular groove two (725).

6. The fatigue test device for conductor spacer according to claim 4, wherein The top block (6) includes a mounting rod (61) and a sliding rod (62). The mounting rod (61) is rotatably fitted with the test outer ring (41). The gear (712) is coaxially arranged with the mounting rod (61). A sliding groove (611) is formed on the mounting rod (61). The sliding rod (62) slides in the sliding groove (611) in a direction perpendicular to the axis of the mounting rod (61). The end of the sliding rod (62) is connected to the protruding part (8). A screw rod (612) is fixedly arranged in the mounting rod (61). The screw rod (612) is arranged along the sliding direction of the sliding rod (62). A relief groove (621) is formed at one end of the sliding rod (62) away from the protruding part (8). The end of the screw rod (612) extends into the relief groove (621). A nut is assembled outside the screw rod (612). The nut abuts against the inner wall of the relief groove (621) to fix the protruding part (8).

7. The fatigue test device for conductor spacer according to claim 6, wherein The sliding rod (62) penetrates through the mounting rod (61). One end of the sliding rod (62) away from the protruding part (8) extends outside the mounting rod (61). The length of the sliding rod (62) extending outside the mounting rod (61) is less than the distance between the test ring (4) and the intermediate disc (5).

8. The fatigue test device for conductor spacer according to claim 4, characterized in that, An installation groove (411) is circumferentially formed on the outer side of the test outer ring (41). The test inner ring (42) is rotatably assembled in the installation groove (411). A placement groove (412) communicating with the installation groove (411) is formed in the test outer ring (41). The top block (6) is rotatably assembled in the placement groove (412). The side surface of the gear (712) extends into the installation groove (411) to engage with the toothed ring (711).

9. The fatigue test device for conductor spacer according to claim 6, characterized in that, The driving component (7) further includes a power component (73), an intermediate wheel (74), and an intermediate belt (75). The intermediate wheel (74) is arranged at the output end of the power component (73). The intermediate belt (75) is sleeved outside the intermediate wheel (74) and the pulley (721).

10. The fatigue test device for conductor spacer according to claim 2, wherein A plurality of elastic components (522) are correspondingly arranged for a plurality of sliding parts (52). The elastic components (522) are used to drive the sliding parts (52) to slide away from the center of the receiving part (51).

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