A fatigue testing device for conductor spacer rods

Abstract

The present invention relates to the technical field of fatigue testing devices, and specifically discloses a fatigue testing device for wire spacer rods, comprising a plurality of brackets arranged in a left-right arrangement, wherein a fixing bracket and a test assembly are respectively provided on the brackets; the fixing brackets are connected to the wires to respectively tension the two ends of the horizontal wires; the test assembly comprises: a test ring rotatably assembled on the brackets, an intermediate disk located in the test ring and connected to the wires, a top block rotatably assembled on the test ring, and a driving member cooperating with the test ring and the top block and driving the two to rotate respectively; a plurality of slots for fixing the wires are circumferentially provided on the intermediate disk; the inner diameter of the test ring is larger than the outer diameter of the intermediate disk; the top block comprises a protrusion, and when the top block rotates, the protrusion is driven to enter between the test ring and the intermediate disk; the fatigue testing device for wire spacer rods of the present invention has the effect of simulating the stress conditions of the spacer rods under real working conditions and improving the test accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of fatigue testing devices, and in particular to a fatigue testing device for a conductor spacer bar. 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 them. They prevent conductors from colliding and becoming entangled 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, reducing conductor fatigue wear, maintaining the equivalent radius of the conductor, suppressing corona losses, and improving transmission efficiency. 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 testing of conductor spacers is necessary to ensure the safety of transmission lines.

[0003] Patent document CN111208017B discloses a spacer fatigue tolerance loading test device. The device comprises a conductor pre-tensioning fixture and a conductor loading fixture. The two fixtures tension the left and right ends of a horizontal conductor and are fixed symmetrically along the conductor's horizontal axis. A pair of six-split spacers to be tested are mounted symmetrically along the conductor's axis between the tensioned conductors. A six-split loading fixture is fixed to the center of the conductor between the six-split spacers. A servo vertical loading mechanism and a servo torsional loading mechanism are connected to the left and right sides of the six-split loading fixture, respectively. The servo vertical loading mechanism applies a vertical vibration torque to the spacers on the conductor, while the servo torsional loading mechanism applies a torsional torque to the spacers on the conductor. By applying vertical vibration torque and torsional torque to the spacers, fatigue testing of the spacers is performed.

[0004] However, the following problems still exist in this solution. The purpose of the fatigue test is to simulate the cyclic load that the spacer rods are subjected to in the actual service environment. In the actual use of the spacer rods, the irregular swinging or shaking of the conductors causes the stress on the spacer rods to be more complicated. The above-mentioned prior art only performs fatigue tests on the spacer rods by applying vertical vibration and torsional vibration to the spacer rods, or other prior art only performs vertical and horizontal vibration fatigue tests on the spacer rods, resulting in a relatively simple stress on the spacer rods during the test, which cannot simulate the actual situation, that is, it cannot truly reflect the stress or strain level that the spacer rods are subjected to in actual use, resulting in the measured fatigue life being much higher than the actual value, resulting in deviations in the test data. Summary of the Invention

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

[0006] The fatigue testing device for conductor spacer rods of the present invention comprises a plurality of brackets arranged in a left-right arrangement, and a fixing bracket and a test assembly are respectively provided on the brackets; the fixing bracket is connected to the conductor to respectively tension the two ends of the horizontal conductor; the test assembly comprises: a test ring rotatably assembled on the bracket, an intermediate disk located in the test ring and connected to the conductor, a top block rotatably assembled on the test ring, and a driving member that cooperates with the test ring and the top block and drives the two to rotate respectively, a plurality of slots for fixing the conductors are opened circumferentially on the intermediate disk, the inner diameter of the test ring is larger than the outer diameter of the intermediate disk, and a protrusion is provided on the side of the top block, and when the top block rotates, the protrusion is driven to enter between the test ring and the intermediate disk; the driving member drives the top block to rotate around the intermediate disk through the test ring, and at the same time, the top block rotates and drives the protrusion to rotate until it abuts against the side of the intermediate disk, pushing the intermediate disk to move in this direction, and after the protrusion is separated from the intermediate disk, the tensioned conductor drives the intermediate disk to reset, thereby driving the spacer rod to vibrate.

[0007] The effect is that the fixed frame is connected to both ends of the wire, so that the wire is in a tensioned state. At the same time, the wire drives the intermediate disk to be located between the test rings. At this time, the intermediate disk and the test ring are arranged at intervals, and the spacer rod is installed on the wire to support the wire. During the test, the driver drives the test ring to rotate around the intermediate disk, and the test ring drives the top block to rotate around the intermediate disk. At the same time, the driver drives the top block to rotate. When the top block rotates, it drives the protrusion to rotate to cooperate with the intermediate disk and drives the intermediate disk to move in a direction away from the top block. After the protrusion separates from the intermediate disk, the tensioned wire drives the intermediate disk to reset, realizing vibration in this direction. As the top block rotates with the test ring, it cooperates with various parts of the intermediate disk in turn during the process, driving the intermediate disk to vibrate in different directions, so as to simulate the stress conditions of the spacer rods when the wire vibrates irregularly or swings under real working conditions, thereby improving the test accuracy.

[0008] Preferably, the intermediate disk includes a receiving portion and a sliding portion, and the sliding portion is provided with multiple corresponding slots. The slots are provided on the sliding portion, and the sliding portion is provided on the receiving portion to slide along the direction toward the center of the receiving portion. An elastic member connecting the sliding portion and the receiving portion is provided between the sliding portion and the receiving portion. The elastic member is used to drive one end of the sliding portion away from the center of the receiving portion to be on the same circumferential surface as the outer side of the receiving portion. The protrusion abuts against the receiving portion to drive multiple wires to vibrate simultaneously, and abuts against the sliding portion to drive a single wire to vibrate.

[0009] The effect is that when the top block rotates with the test ring, it rotates around the receiving part and the sliding part, that is, the top block will abut against the receiving part or the sliding part respectively when it rotates. When the protrusion abuts against the receiving part, it drives multiple wires to vibrate simultaneously. When the protrusion abuts against the sliding part, it drives a single wire to vibrate. That is, during the process, multiple wires vibrate simultaneously and a single wire vibrates in turn, so that the force exerted on the spacer rod is closer to the actual working conditions.

[0010] Preferably, the test ring includes a coaxially arranged test outer ring and a test inner ring, the test inner ring rotates in coordination 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, and the test inner ring rotates relative to the test outer ring to drive the top block to rotate via 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 protrusion rotates between the test ring and the intermediate disk to drive the wire to vibrate.

[0012] Preferably, the linkage member includes a ring gear and a gear, the ring gear is coaxially arranged on the inner side of the test inner ring, the gear and the top block are coaxially arranged, and the gear and the ring gear are meshed.

[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 comprises a pulley, belt one, and belt two. The pulley is provided with an annular groove one and annular groove two in a circumferential direction. The diameters of annular groove one and annular groove two are different. One set of belts is arranged on the outside of the pulley and the test outer ring, and the second set of belts is arranged on the outside of the pulley and the test inner ring. Belt one cooperates with annular groove one, and belt two cooperates with annular groove two.

[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 belt one and belt two, but the diameters of annular groove one and annular groove two are different, so that although the test outer ring and the test inner ring rotate in the same direction, their rotation speeds are different, so that the test inner ring rotates relative to the test outer ring, thereby driving the top block to rotate.

[0016] Preferably, the top block includes a mounting rod and a sliding rod, the mounting rod is rotatably matched with the test outer ring, the gear and the mounting rod are coaxially arranged, a sliding groove is provided on the mounting rod, the sliding rod slides in the sliding groove in a direction perpendicular to the axis of the mounting rod, the end of the sliding rod is connected to the protrusion, a screw is fixedly provided in the mounting rod, the screw is arranged along the sliding direction of the sliding rod, a clearance groove is provided at the end of the sliding rod away from the protrusion, the end of the screw extends into the clearance groove, a nut is assembled on the outside of the screw, and the nut abuts against the inner wall of the clearance groove to fix the protrusion.

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

[0018] Preferably, the slide rod is arranged through the mounting rod, and one end of the slide rod away from the protrusion extends to the outside of the mounting rod, and the length of the slide rod 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 less 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 engage 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 drives the top block to rotate through the cooperation of the gear ring and the gear.

[0022] Preferably, the driving member further includes 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 the multiple elastic members are provided so that the multiple sliding parts are independent of each other, that is, each sliding part can move relative to the receiving part to drive the vibration of a single wire.

[0026] Beneficial effects:

[0027] 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, so as to drive the middle disk to vibrate in that 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 conditions of the spacer rod under actual working conditions and improve the test accuracy.

[0028] 2. An intermediate disk is provided including a receiving part and a sliding part. When the test ring drives the top block to rotate, the top block rotates and drives the protrusion to contact the receiving part or the sliding part in turn. At the same time, the top block rotates around the receiving part and the sliding part. When the protrusion contacts the receiving part, multiple conductors are driven to vibrate in the same direction at the same time. When the protrusion contacts the sliding part, a single conductor is driven to vibrate in the direction. As the top block rotates with the test ring, the protrusion contacts different positions on the receiving part and each sliding part, so that the vibration direction of the conductor changes continuously to simulate the stress condition of the spacer rod under real working conditions.

[0029] 3. The sliding rod is slidably assembled on the mounting rod, and the sliding rod is connected to the protrusion. The position of the protrusion can be adjusted by moving the sliding rod, and then the distance between the protrusion and the test ring and the intermediate disk can be controlled. Then, the formation of the protrusion pushing the intermediate disk to move can be controlled to adjust the vibration amplitude of the intermediate disk. At the same time, the frequency of the vibration can be adjusted by adjusting the speed of the power part to simulate different working conditions to test the spacer rod.

[0030] 4. By setting the diameters of annular grooves 1 and 2 to be different, the inner and outer test rings rotate in the same direction but at different speeds. This creates a speed difference between the two, causing the inner test ring to rotate relative to the outer test ring, thereby driving the top block to rotate. Furthermore, by adjusting the ratio of the diameters of annular grooves 1 and 2, the rotation speed of the inner test ring relative to the outer test ring can be adjusted, thereby adjusting the speed of the top block's rotation and, in turn, the frequency of the intermediate disk's vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0032] Figure 2 It is a three-dimensional diagram of the overall structure of an embodiment of the present invention.

[0033] Figure 3 It is a schematic diagram of the connection between the intermediate disk and the wire in an embodiment of the present invention.

[0034] Figure 4 Schematic diagram of the structure of the test ring and the intermediate disk in an embodiment of the present invention.

[0035] Figure 5 Schematic diagram of an explosion of the test outer ring and the test inner ring in an embodiment of the present invention.

[0036] Figure 6 It is a partial exploded diagram of the test outer ring and the test inner ring in the embodiment of the present invention.

[0037] Figure 7 Schematic diagram of the structure of the driving member in an embodiment of the present invention.

[0038] Figure 8 1 is a schematic diagram of a state in which the protrusion is separated from the intermediate disk in an embodiment of the present invention.

[0039] Figure 9 Schematic diagram of the structure of the pulley in the embodiment of the present invention.

[0040] Figure 10 It is a cross-sectional view of an intermediate disk in an embodiment of the present invention.

[0041] Figure 11 2 is a cross-sectional view of the mounting rod and the protrusion in an embodiment of the present invention.

[0042] Reference numerals:

[0043] 01. Wire; 02. Spacer; 1. Bracket; 11. Mounting seat; 2. Fixing frame; 3. Test assembly; 4. Test ring; 41. Test outer ring; 411. Mounting groove; 412. Placement groove; 42. Test inner ring; 5. Intermediate disk; 51. Receiver; 511. Receiver groove; 52. Sliding part; 521. Slot; 522. Elastic part; 6. Top block; 61. Mounting rod; 611. Slide groove; 612. Screw; 62. Slide rod; 621. Give way groove; 622. Accommodation groove; 7. Driving part; 71. Linkage part; 711. Ring gear; 712. Gear; 72. Differential part; 721. Pulley; 722. Belt 1; 723. Belt 2; 724. Annular groove 1; 725. Annular groove 2; 73. Power part; 74. Intermediate wheel; 75. Intermediate belt; 8. Raised part. DETAILED DESCRIPTION

[0044] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0045] like Figures 1 to 11 As shown, the conductor spacer fatigue test device of the present invention includes a bracket 1, a fixing frame 2, and a test assembly 3. Multiple brackets 1 are arranged side by side, with three being provided in this embodiment. Two fixing frames 2 are provided, mounted on two edge brackets 1, respectively. The test assembly 3 is located on the middle bracket 1. The fixing frames 2 are connected to both ends of a conductor 01 and cause it to be horizontally tensioned. The test assembly 3 is connected to the conductor 01, on which a spacer 02 is mounted. The test assembly 3 causes the conductor 01 to vibrate, simulating the normal state of the conductor 01 and performing a fatigue test on the spacer 02.

[0046] Reference Figure 1 、 Figure 2A mounting seat 11 is provided on the bracket 1 corresponding to the test component 3 , and the test component 3 is mounted on the mounting seat 11 .

[0047] Reference Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 The test assembly 3 includes: a test ring 4, an intermediate disk 5, a top block 6, and a drive member 7. The test ring 4 is rotatably connected to the mounting seat 11, that is, the test ring 4 is rotatably assembled on the bracket 1 through the mounting seat 11. The intermediate disk 5 is located inside the test ring 4. A plurality of slots 521 for fixing the wire 01 are opened circumferentially on the intermediate disk 5. The wire 01 passes through the 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 coaxial. The top block 6 is rotatably set on the test ring 4. The drive member 7 is set on the bracket 1, and the drive member 7 cooperates with the test ring 4 and the top block 6 respectively, and drives them to rotate separately.

[0048] Reference Figure 6 、 Figure 7 、 Figure 8 A protrusion 8 is provided on the top block 6, and the protrusion 8 is located on the side of the top block 6. When the driving member 7 drives the top block 6 to rotate, the protrusion 8 is driven to rotate between the test ring 4 and the intermediate disk 5. When the protrusion 8 is fully rotated 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.

[0049] During the test, the driver 7 rotates the test ring 4, which in turn drives the top block 6 to rotate around the intermediate disk 5. Simultaneously, the driver 7 drives the top block 6 to rotate, and the top block 6 drives the protrusion 8 to rotate until it mates with the intermediate disk 5, driving the intermediate disk 5 to move in a direction away from the driver 7. When the protrusion 8 rotates to separate from the intermediate disk 5, the tensioned wire 01 drives the intermediate disk 5 back to its original position, completing a vibration in that direction. As the test ring 4 continues to rotate, it drives the top block 6 to rotate to different positions corresponding to the side of the intermediate disk 5. Simultaneously, the top block 6 drives the intermediate disk 5 to move in different directions via the protrusion 8, causing the intermediate disk 5 to vibrate periodically in multiple directions, simulating the actual working conditions of the spacer rod 02 and improving test accuracy.

[0050] Reference Figure 8 、 Figure 10The intermediate disk 5 includes a receiving portion 51 and a sliding portion 52. The receiving portion 51 is arranged in a circular shape. A receiving groove 511 is opened on the receiving portion 51. The sliding portion 52 is arranged in the receiving groove 511, and the sliding portion 52 slides in the receiving groove 511 along the center direction of the receiving portion 51. There are multiple sliding portions 52 circumferentially arranged on the receiving portion 51. The multiple sliding portions 52 and the multiple slots 521 are arranged in a one-to-one correspondence, and the slots 521 are arranged on the sliding portion 52.

[0051] Reference Figure 8 、 Figure 10 A spring 522 is disposed between the sliding portion 52 and the receiving portion 51. The spring 522 is configured as a spring and is connected to the sliding portion 52 and the receiving portion 51, respectively. The spring 522 is configured to drive the sliding portion 52 to slide 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 configured in an arc shape. In the initial state, the arc side of the sliding portion 52 driven by the spring 522 is aligned with the outer side of the receiving portion 51. Multiple springs 522 are provided corresponding to the plurality of sliding portions 52, that is, each sliding portion 52 moves relative to the receiving portion 51.

[0052] As the top block 6 rotates with the test ring 4, it passes through multiple receiving portions 51 in sequence. As the top block 6 rotates, it drives the raised portion 8 into contact with the intermediate disk 5 or the receiving portion 51. When the raised portion 8 contacts the receiving portion 51, it causes multiple conductors 01 to vibrate simultaneously in that direction. When the raised portion 8 contacts the sliding portion 52, it moves the sliding portion 52 toward the center of the receiving portion 51, vibrating the individual conductors 01 corresponding to the sliding portion 52. This simulates the stresses on the spacer rods 02 under various operating conditions, further improving test accuracy.

[0053] Reference 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 seat 11, and the test inner ring 42 is rotatably 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 disposed 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 through the linkage member 71.

[0054] Reference Figure 6 、 Figure 7 、 Figure 8The linkage member 71 includes a ring gear 711 and a gear 712. The ring gear 711 is coaxially arranged on the inner side of the test inner ring 42, and the gear 712 is coaxially arranged with the top block 6. The gear 712 meshes with the ring gear 711. When the test inner ring 42 rotates relative to the test outer ring 41, the ring gear 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. A mounting groove 411 is provided on the outer circumference of the test outer ring 41. The test inner ring 42 is rotatably assembled in the mounting groove 411. A placement groove 412 is provided on the test outer ring 41. The placement groove 412 is connected to the mounting groove 411. The top block 6 is rotatably assembled in the placement groove 412. The gear 712 is also provided in the placement groove 412, and the side surface of the gear 712 extends into the placement groove 412 to cooperate with the ring gear 711.

[0055] Reference Figure 5 、 Figure 9 Differential member 72 includes pulley 721, belt 1 722, and belt 2 723. Pulley 721 is provided with annular groove 1 724 and annular groove 2 725. Both annular groove 1 724 and annular groove 2 725 are coaxially arranged with pulley 721. Annular groove 1 724 and annular groove 2 725 have different diameters. Belt 1 722 corresponds to the test outer ring 41, while belt 2 723 corresponds to the test inner ring 42. Belt 1 722 is sleeved around the outside of pulley 721 and the test outer ring 41, while belt 2 723 is sleeved around the outside of pulley 721 and the test inner ring 42. Belt 1 722 engages with annular groove 1 724, while belt 2 723 engages with annular groove 2 725.

[0056] Reference Figure 5 The driving member 7 further includes a power member 73, an intermediate pulley 74, and an intermediate belt 75. The power member 73 is configured as a motor, the output end of which is connected to the intermediate pulley 74. The intermediate belt 75 is sleeved outside the intermediate pulley 74 and the pulley 721. The power member 73 drives the intermediate belt 75 to rotate via the intermediate pulley 74, which in turn drives the pulley 721 to rotate, thereby driving the test outer ring 41 and the test inner ring 42 to rotate.

[0057] The power member 73 drives the pulley 721 to rotate. The rotation of the pulley 721 drives the test outer ring 41 to rotate via the belt 1 722, and drives the test inner ring 42 to rotate via the belt 2 723. At the same time, the diameters of the annular groove 1 724 and the annular groove 2 725 are different, resulting in 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, thereby driving the rotation of the top block 6. In this embodiment, the diameter of the annular groove 1 724 is set to be smaller than the diameter of the annular groove 2 725. That is, the rotation speed of the test inner ring 42 is greater than the rotation speed of the test outer ring 41, allowing the ring gear 711 to rotate relative to the gear 712, thereby driving the rotation of the top block 6.

[0058] Reference Figure 5 、 Figure 9 , annular groove 1 724 and annular groove 2 725 are arranged along the axial direction of pulley 721, two annular grooves 1 724 are provided, annular groove 2 725 is provided between the two annular grooves 1 724, and two belts 1 722 are also provided. By providing two belts 1 722 and annular groove 1 724, the stability of the test outer ring 41 during rotation is improved. In addition, the mounting groove 411 is located between the two belts 1 722, that is, the center of the test inner ring 42 corresponds to the center of the test outer ring 41. The test inner ring 42 is rotationally matched with the test outer ring 41 through the mounting 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, and the mounting seat 11 simultaneously supports the test inner ring 42 and the test outer ring 41, ensuring that the test inner ring 42 and the test outer ring 41 rotate in the same direction and the stability of the test inner ring 42 when rotating relative to the test outer ring 41.

[0059] In addition, the diameter ratio of the annular groove 1 724 and the annular groove 2 725 can be set to adjust the speed of the test inner ring 42 rotating relative to the test outer ring 41, thereby adjusting the speed of the top block 6 rotating, thereby adjusting the frequency of the vibration of the middle disk 5 driven by the top block 6.

[0060] Reference Figure 8 、 Figure 11 The top block 6 includes a mounting rod 61 and a sliding rod 62. The mounting rod 61 is rotatably engaged with the test outer ring 41. The gear 712 is coaxially arranged on the outside of the mounting rod 61. A sliding groove 611 is provided on the mounting rod 61. The sliding rod 62 is slidably assembled in the sliding groove 611. 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 protrusion 8. A clearance groove 621 is provided at the end of the sliding rod 62 away from the protrusion 8.

[0061] Reference Figure 11 A receiving groove 622 is formed on the slide rod 62, and a screw rod 612 is fixedly installed in the mounting rod 61. The screw rod 612 is arranged along the sliding direction of the slide rod 62 and is located in the receiving groove 622. A clearance groove 621 is formed on the end of the slide rod 62 facing away from the protrusion 8, and the end of the screw rod 612 extends into the clearance groove 621. A nut is assembled on the outside of the screw rod 612.

[0062] Move the slide bar 62 to adjust the length of the protrusion 8 extending beyond the mounting bar 61, thereby adjusting the vibration amplitude of the receiving portion 51 and the sliding portion 52. After adjustment, rotate the nut until the side of the nut abuts the inner wall of the clearance groove 621. The nut and screw 612 cooperate to secure the slide bar 62, thereby securing the protrusion 8.

[0063] Reference Figure 8 、 Figure 11 The slide rod 62 extends through the mounting rod 61 to adjust and secure the protrusion 8. The length of the end of the slide rod 62 that extends away from the protrusion 8 is less than the distance between the test ring 4 and the intermediate disk 5. This means that when the top block 6 rotates, the slide rod 62 will not come into contact with the intermediate disk 5, thus reducing the possibility of the slide rod 62 interfering with the test.

[0064] 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 in a one-to-one correspondence 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 provided to slide with the bracket 1, and the fixing ring slides in a direction away from the intermediate 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 can be moved to tension the wire 01. In addition, a cylinder for driving the fixing ring to move can be provided 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 tensions the wire 01 by pushing the fixing ring to move, thereby improving installation efficiency.

[0065] The implementation principle of the present invention is as follows: the power part 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 respectively through the belt 1 722 and the belt 2 723. At the same time, under the action of the annular groove 1 724 and the annular groove 2 725 with different diameters, the test inner ring 42 and the test outer ring 41 rotate in the same direction. At the same time, the test inner ring 42 rotates relative to the test outer ring 41. The rotation of the test outer ring 41 drives the top block 6 to rotate around the intermediate disk 5. The rotation of the test inner ring 42 relative to the test outer ring 41 drives the top block 6 to rotate. 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. 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.

[0066] Furthermore, when the protrusion 8 rotates between the test outer ring 41 and the intermediate disk 5, it contacts the receiving portion 51 and the sliding portion 52, respectively. When contacting the receiving portion 51, it causes multiple conductors 01 to vibrate simultaneously, while when contacting the sliding portion 52, it causes a single conductor 01 to vibrate. This simulates the stress on the spacer rod 02 under real working conditions and improves test accuracy.

[0067] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A conductor spacer fatigue test device, comprising a plurality of brackets arranged left and right, characterized in that: The bracket is respectively provided with a fixing frame and a test component; The fixing frame is connected to the conductor to respectively tension the two ends of the horizontal conductor; The test assembly includes: a test ring rotatably mounted on a bracket, an intermediate disk located within the test ring and connected to a conductor, a top block rotatably mounted on the test ring, and a driving member that cooperates with the test ring and the top block to drive both to rotate separately. The intermediate disk is circumferentially provided with a plurality of slots for securing the conductors. The inner diameter of the test ring is larger than the outer diameter of the intermediate disk. A protrusion is provided on the side of the top block. When the top block rotates, the protrusion is driven to enter between the test ring and the intermediate disk. The driving member drives the top block to rotate around the middle disk through the test ring. At the same time, the top block rotates and drives the protrusion to rotate until it contacts the side of the middle disk, pushing the middle disk to move in that direction. After the protrusion separates from the middle disk, the tensioned wire drives the middle disk to reset, thereby driving the spacer rod to vibrate. The intermediate disk includes a receiving portion and a sliding portion. The sliding portion is provided with a plurality of corresponding slots. The slots are provided on the sliding portion. The sliding portion slides on the receiving portion in a direction toward the center of the receiving portion. An elastic member connecting the sliding portion and the receiving portion is provided between the sliding portion and the receiving portion. The elastic member is used to drive an end of the sliding portion away from the center of the receiving portion to be on the same circumferential surface as the outer side of the receiving portion. When the protrusion abuts the receiving portion, multiple wires are driven to vibrate simultaneously. When the protrusion abuts the sliding portion, a single wire is driven to vibrate. The test ring includes a coaxially arranged test outer ring and a test inner ring. The test inner ring rotates in coordination with the test outer ring. The top block is rotatably assembled on the test outer ring. The driving part includes a linkage part and a differential part. The linkage part is arranged between the test inner ring and the top block and connects the two. The differential part 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 test inner ring rotates relative to the test outer ring, driving the top block to rotate through the linkage part.

2. The conductor spacer fatigue testing device according to claim 1, characterized in that: The linkage part includes a gear ring and a gear. The gear ring is coaxially arranged on the inner side of the test inner ring. The gear and the top block are coaxially arranged. The gear and the gear are meshed with the gear ring.

3. The conductor spacer fatigue testing device according to claim 1, characterized in that: The differential includes a pulley, belt one, and belt two. The pulley is provided with annular groove one and annular groove two in the circumferential direction. The diameters of annular groove one and annular groove two are different. One set of belts is arranged outside the pulley and the test outer ring, and the second set of belts is arranged outside the pulley and the test inner ring. Belt one cooperates with annular groove one, and belt two cooperates with annular groove two.

4. The conductor spacer fatigue testing device according to claim 2, characterized in that: The top block includes a mounting rod and a sliding rod. The mounting rod is rotatably matched with the test outer ring. The gear is coaxially arranged with the mounting rod. A sliding groove is provided on the mounting rod. The sliding rod slides in the sliding groove in a direction perpendicular to the axis of the mounting rod. The end of the sliding rod is connected to the protrusion. A screw is fixedly provided in the mounting rod. The screw is provided along the sliding direction of the sliding rod. A clearance groove is provided at the end of the sliding rod away from the protrusion. The end of the screw extends into the clearance groove. A nut is assembled on the outside of the screw, and the nut abuts against the inner wall of the clearance groove to fix the protrusion.

5. The conductor spacer fatigue testing device according to claim 4, characterized in that: The slide rod passes through the mounting rod, and one end of the slide rod away from the protrusion extends to the outside of the mounting rod. The length of the slide rod extending from the mounting rod is less than the distance between the test ring and the middle disk.

6. The conductor spacer fatigue testing device according to claim 2, characterized in that: An installation groove is provided on the outer circumference of the test outer ring, and the test inner ring is rotatably assembled in the installation groove. A placement groove connected to the installation groove is provided in the test outer ring, and the top block is rotatably assembled in the placement groove. The side surface of the gear extends into the installation groove and engages with the gear ring.

7. The conductor spacer fatigue testing device according to claim 4, characterized in that: The driving member also includes 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.

8. The conductor spacer fatigue testing device according to claim 1, characterized in that: A plurality of elastic members are provided corresponding to the plurality of sliding parts, and the elastic members are used for driving the sliding parts to slide away from the center of the receiving part.

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