A power transmission line spacer

Abstract

The present application relates to the technical field of power equipment, and discloses a power transmission line spacer rod, which comprises an inter-phase spacer rod body and fixing assemblies arranged at two ends of the inter-phase spacer rod body, the fixing assemblies comprise guide rails and two oppositely arranged clamping plates, the two ends of the inter-phase spacer rod body are fixedly provided with connecting seats, the guide rails are fixedly connected with the connecting seats, the two clamping plates are slidingly connected with the guide rails, the side of the guide rail away from the connecting seat is provided with a transmission assembly, and the side of the guide rail away from the clamping plate is provided with a driving assembly; through the arrangement of the driving assembly and the transmission assembly, when the connecting rope is cut off, the first spring drives the sliding plate to move, the straight gear, the first bevel gear, the second bevel gear and the double-headed screw rod are driven, the two clamping plates are relatively moved to clamp the cable, the self-locking characteristic of the double-headed screw rod is utilized to prevent the clamping plates from loosening, power components such as storage batteries and motors are not needed, the manufacturing cost of the spacer rod is significantly reduced, and the safety hazards such as explosion caused by thermal runaway of the storage battery are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power equipment, in particular to a power transmission line spacer. BACKGROUND

[0002] The power transmission line spacer is an important fitting installed on the split conductor of the power transmission line, which mainly functions to maintain the fixed distance between the sub-conductors in the split conductor, prevent the sub-conductors from damaging the insulation layer or causing mechanical damage due to wind force, icing and other external forces, and also suppress the sub-conductor's sub-span oscillation to improve the stability and safety of the power transmission line operation.

[0003] The Chinese patent CN117394208A discloses a unmanned aerial vehicle live-line installation phase-to-phase spacer, which comprises a hoisting telescopic mechanism and a phase-to-phase spacer main body, the phase-to-phase spacer main body is detachably connected with the hoisting telescopic mechanism, and the hoisting telescopic mechanism is installed at the bottom of the unmanned aerial vehicle; the fixed arm, the first sliding arm and the second sliding arm of the hoisting telescopic mechanism are convenient to store and deploy; when the hoisting telescopic mechanism is in the storage state, it is convenient to carry and use; when the hoisting telescopic mechanism is in the deployed state, it is convenient to avoid the shaking of the phase-to-phase spacer main body caused by high-altitude airflow during the installation of the phase-to-phase spacer main body, to ensure the accurate positioning and installation of the phase-to-phase spacer main body and the power line, and to maintain the distance between the unmanned aerial vehicle and the power line during the installation, to ensure the safety of the construction and to avoid the interference of the power line with the signal of the unmanned aerial vehicle.

[0004] With the development of unmanned aerial vehicle technology, the installation mode of the power transmission line spacer has gradually transformed from traditional manual operation to unmanned aerial vehicle assisted operation. This innovation significantly reduces the installation cost and greatly improves the safety of high-altitude operation. As shown in the above patent, in order to achieve reliable connection between the spacer hook and the power transmission line, a wire presser is usually configured as a fixing device. The movement control of the wire presser relies on the built-in driving mechanism, and the operation of the driving mechanism requires a power assembly such as a storage battery and a motor. This design not only significantly increases the manufacturing cost of the spacer, but also has a major safety hazard. Since the high-voltage power transmission line is erected at a high position, the storage battery carried by the spacer is prone to thermal runaway in a high-temperature environment, which may cause explosions and other serious accidents, posing a potential threat to the stable operation of the power system and the safety of the surrounding environment.

[0005] Therefore, it is necessary to provide a power transmission line spacer to solve the above technical problems. SUMMARY

[0006] The purpose of the present application is to provide a power transmission line spacer which does not require a storage battery, a motor and other power components, significantly reduces the manufacturing cost of the spacer, and avoids the safety hazard of explosion caused by thermal runaway of the storage battery.

[0007] The technical purposes are achieved by the following technical solutions: a power transmission line spacer rod, comprising a phase-to-phase spacer rod body and a fixing assembly arranged at both ends of the phase-to-phase spacer rod body, the fixing assembly comprises a guide rail and two oppositely arranged clamping plates, both ends of the phase-to-phase spacer rod body are fixedly provided with a connecting seat, the guide rail is fixedly connected with the connecting seat, the two clamping plates are slidingly connected with the guide rail, a transmission assembly is arranged on the side of the guide rail away from the connecting seat, a driving assembly is arranged on the side of the guide rail away from the clamping plate, the driving assembly is drivingly connected with the two clamping plates through the transmission assembly to drive the two clamping plates to move oppositely, the driving assembly comprises a driving box, a sliding plate slidingly arranged in the driving box, a first spring arranged in the driving box and a connecting rope, the sliding plate is elastically connected with the side wall of the driving box close to the connecting seat through the first spring, the first spring is in a compressed state, and the two ends of the connecting rope are connected with the sliding plates in the two driving assemblies respectively, the sliding plate moves to drive the clamping plate to move through the transmission assembly.

[0008] Further, the inside of the guide rail is slidingly provided with two sliding seats, the two clamping plates are fixedly connected with the two sliding seats respectively, and the inside of the guide rail is rotatably provided with a double-head screw rod penetrating through the two sliding seats and being threadedly connected with the two sliding seats.

[0009] Further, the transmission assembly comprises a transmission box, a rotating shaft, a first bevel gear and a second bevel gear, the transmission box is fixedly arranged on the side of the guide rail away from the connecting seat, one end of the rotating shaft is located in the transmission box, the other end of the rotating shaft is located in the driving box and is rotatably connected with the transmission box and the driving box, the first bevel gear and the second bevel gear are arranged in the transmission box, the top end of the double-head screw rod extends into the transmission box, the first bevel gear is fixedly sleeved on the top end of the double-head screw rod, and the end of the rotating shaft extending into the transmission box is fixedly connected with the second bevel gear.

[0010] Further, the driving assembly further comprises a spur gear and a rack, the rack is fixedly arranged on the side of the sliding plate away from the first spring, the spur gear is fixedly sleeved on the end of the rotating shaft extending into the driving box, and the rack is meshed with the spur gear.

[0011] Further, the side of the sliding plate close to the connecting seat is fixedly provided with a sliding column, the sliding column penetrates through the side wall of the driving box close to the connecting seat, the end of the sliding column away from the sliding plate is fixedly provided with a connecting disc, the side of the connecting disc away from the sliding column is fixedly provided with a connecting ring, and the end of the connecting rope is fixedly connected with the connecting ring.

[0012] The further arrangement of the present application is that the first magnetic block is embedded and installed on the sliding plate, the limiting plate is fixedly installed in the middle of the inner cavity of the driving box, the limiting plate is provided with a through hole for the rack to pass through, the second magnetic block is embedded and installed on the limiting plate, and the first magnetic block and the second magnetic block are magnetically attracted.

[0013] The further arrangement of the present application is that the two insulators are provided on the main body of the interval rod, the telescopic connecting assembly is arranged between the two insulators, and the two insulators are elastically connected through the telescopic connecting assembly.

[0014] The further arrangement of the present application is that the telescopic connecting assembly comprises a connecting barrel, a connecting column and a second spring, the connecting barrel and the connecting column are fixedly connected with the two insulators respectively, one end of the connecting column extends into the inside of the connecting barrel, the second spring is arranged in the connecting barrel, and the connecting column is elastically connected with the connecting barrel through the second spring.

[0015] The further arrangement of the present application is that the connecting barrel is fixedly provided with a rope winding rod on one side, the rope winding rod is provided with a notch on the end away from the connecting barrel, the connecting rope passes through the notch, the rope winding rod is provided with a locking bolt on the end away from the connecting barrel in a threaded mode, one end of the locking bolt extends into the notch and presses on the connecting rope, and the other end of the locking bolt is fixedly provided with a knob.

[0016] The further arrangement of the present application is that the connecting disc is made of rubber material, and the connecting disc is attached to the outer wall of the transmission box when the clamping plate clamps the cable.

[0017] In summary, the present application has the following beneficial effects:

[0018] 1. The present application is provided with the driving assembly and the transmission assembly, when the connecting rope is cut off, the first spring drives the sliding plate to move, the straight gear, the first bevel gear, the second bevel gear and the double-headed screw rod are driven to transmit, the two clamping plates are relatively moved to clamp the cable, the self-locking characteristic of the double-headed screw rod is utilized to prevent the clamping plate from loosening, no power assembly such as a storage battery and a motor is needed, the manufacturing cost of the interval rod is significantly reduced, the safety hazards such as explosion caused by thermal runaway of the storage battery are avoided, the first magnetic block on the sliding plate and the second magnetic block on the limiting plate are magnetically attracted, the problem of insufficient spring elasticity is solved, the clamping force is further enhanced, and the connection between the interval rod and the cable is stable and reliable;

[0019] 2、The present application is through the setting of the connecting cylinder, connecting column and the second spring in the telescopic connecting assembly, so that the phase spacing rod body length can be elastically adjusted with the upper and lower cable spacing, buffer the force when the cable moves relatively, avoid the damage of the spacing rod caused by rigid connection; the cooperation of the winding rod and the locking bolt can adjust the winding number of the connecting rope according to the distance measurement result, accurately control the length of the spacing rod body, adapt to the cable installation demand of different spacing, improve the operation adaptability and installation reliability, and when the connecting rope is cut off, the locking of the phase spacing rod body length can be automatically released, without other operation, improve the installation convenience. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional structure schematic diagram of the present application;

[0021] Figure 2 It is an enlarged structure schematic diagram of A of Figure 1 ;

[0022] Figure 3 It is a front view structure schematic diagram of the present application;

[0023] Figure 4 It is a sectional view structure schematic diagram of the fixing assembly, transmission assembly and driving assembly of the present application;

[0024] Figure 5 It is a structure schematic diagram of the transmission assembly and driving assembly of the present application;

[0025] Figure 6 It is a structure schematic diagram of the transmission assembly and driving assembly of the present application;

[0026] Figure 7 It is an enlarged structure schematic diagram of B of Figure 6 ;

[0027] Figure 8 It is a sectional view structure schematic diagram of the telescopic connecting assembly of the present application;

[0028] Figure 9 It is a top view structure schematic diagram of the winding rod and locking bolt of the present application.

[0029] In the figure: 1, phase spacing rod main body; 2, insulator; 3, telescopic connecting assembly; 301, connecting cylinder; 302, connecting column; 303, second spring; 4, connecting seat; 5, fixing assembly; 501, guide rail; 5011, anti-skid protrusion; 502, sliding seat; 503, clamping plate; 504, double-end screw; 6, transmission assembly; 601, transmission box; 602, first bevel gear; 603, rotating shaft; 604, second bevel gear; 7, driving assembly; 701, driving box; 702, spur gear; 703, rack; 704, sliding plate; 705, first spring; 706, sliding column; 707, connecting disc; 708, connecting ring; 709, connecting rope; 710, limiting plate; 711, first magnetic block; 712, second magnetic block; 8, rope winding rod; 801, notch; 9, locking bolt; 10, knob. DETAILED DESCRIPTION

[0030] The application will be further described below with reference to the accompanying drawings of the embodiments thereof.

[0031] Please refer to Figures 1-7The power transmission line spacer rod in the embodiment of the present application comprises a phase-to-phase spacer rod body 1 and a fixing assembly 5 arranged at both ends of the phase-to-phase spacer rod body 1, the fixing assembly 5 comprises a guide rail 501 and two oppositely arranged clamping plates 503, the clamping plate 503 is in an arc structure, both ends of the phase-to-phase spacer rod body 1 are fixedly provided with a connecting seat 4, the guide rail 501 is fixedly connected with the connecting seat 4, the two clamping plates 503 are slidingly connected with the guide rail 501, one side of the guide rail 501 away from the connecting seat 4 is provided with a transmission assembly 6, one side of the guide rail 501 away from the clamping plate 503 is provided with a driving assembly 7, the driving assembly 7 is drivingly connected with the two clamping plates 503 through the transmission assembly 6 to drive the two clamping plates 503 to move oppositely, the driving assembly 7 comprises a driving box 701, a sliding plate 704 slidingly arranged in the driving box 701, a first spring 705 and a connecting rope 709 arranged in the driving box 701, the sliding plate 704 is elastically connected with the side wall of the driving box 701 close to the connecting seat 4 through the first spring 705, the first spring 705 is in a compressed state, the first spring 705 in the compressed state stores elastic potential energy to provide a power source for subsequent movement of the sliding plate 704, both ends of the connecting rope 709 are connected with the sliding plate 704 in the two driving assemblies 7 respectively, the sliding plate 704 moves to drive the clamping plate 503 to move through the transmission assembly 6; in specific use, an electric clamp is arranged on the unmanned aerial vehicle to clamp the phase-to-phase spacer rod body 1, when clamping, the phase-to-phase spacer rod body 1 is in a vertical state, the phase-to-phase spacer rod body 1 is moved to an installation position through flight of the unmanned aerial vehicle, the upper and lower two cables are arranged on the inner sides of the upper and lower two groups of clamping plates 503 through movement of the phase-to-phase spacer rod body 1, then the connecting rope 709 is cut off to release the limiting of the sliding plate 704 by the connecting rope 709, so that the two sliding plates 704 move away from the connecting seat 4 under the elastic action of the first spring 705, the sliding plate 704 moves to drive the clamping plate 503 to move through the transmission assembly 6, so as to clamp the cable, the clamping process does not need manual intervention and can be completed through remote operation of the unmanned aerial vehicle, which greatly improves the safety and convenience of high-altitude operation, after clamping of the two cables is completed, the electric clamp on the unmanned aerial vehicle is controlled to release the fixing of the phase-to-phase spacer rod body 1, so that the installation is completed, the connecting rope 709 can be cut off by arranging an electric shear on the unmanned aerial vehicle or can be burned off by using a laser obstacle clearing instrument on the ground.

[0032] In the embodiment, preferably, anti-skid protrusions 5011 are arranged on both opposite side walls of the upper guide rail 501, the clamps on the unmanned aerial vehicle are clamped on both sides of the guide rail 501, and the anti-skid protrusions 5011 provide firmness of clamping.

[0033] In the embodiment, preferably, the inner part of the guide rail 501 is slidably provided with two sliding seats 502, two clamping plates 503 are fixedly connected with the two sliding seats 502 respectively, the inner part of the guide rail 501 is rotatably provided with a double-headed screw 504, the double-headed screw 504 penetrates through the two sliding seats 502 and is threadedly connected with the two sliding seats 502, two thread grooves with opposite directions are formed in the double-headed screw 504, so that the double-headed screw 504 can drive the two sliding seats 502 to move reversely and synchronously when the double-headed screw 504 rotates, and then the two clamping plates 503 are reversely and synchronously moved, the self-locking characteristic of the double-headed screw 504 is utilized, so that the clamping plates 503 can effectively clamp the cable and prevent the clamping plates 503 from loosening, and an anti-skid structure such as anti-skid lines can be arranged on the clamping surface of the clamping plates 503 to improve the firmness of the fixation.

[0034] In the embodiment, preferably, the transmission assembly 6 comprises a transmission box 601, a rotating shaft 603, a first bevel gear 602 and a second bevel gear 604, the transmission box 601 is fixedly installed on the side of the guide rail 501 away from the connecting base 4, one end of the rotating shaft 603 is located in the transmission box 601, the other end of the rotating shaft 603 is located in the driving box 701, and the rotating shaft 603 is rotatably matched with the transmission box 601 and the driving box 701, the first bevel gear 602 and the second bevel gear 604 are arranged in the transmission box 601, the top end of the double-headed screw 504 extends into the transmission box 601, and the first bevel gear 602 is fixedly sleeved on the top end of the double-headed screw 504, one end of the rotating shaft 603 extending into the transmission box 601 is fixedly connected with the second bevel gear 604, and the first bevel gear 602 is engaged with the second bevel gear 604; the driving assembly 7 further comprises a spur gear 702 and a rack 703, the rack 703 is fixedly installed on the side of a sliding plate 704 away from a first spring 705, the spur gear 702 is fixedly sleeved on the end of the rotating shaft 603 extending into the driving box 701, and the rack 703 is engaged with the spur gear 702; when the connecting rope 709 is broken, under the elastic action of the first spring 705, the sliding plate 704 moves away from the connecting base 4, thereby driving the rack 703 to move, the rack 703 drives the spur gear 702 to rotate when moving, the first bevel gear 602 is driven to rotate by the second bevel gear 604 when the spur gear 702 rotates, the double-headed screw 504 is driven to rotate by the first bevel gear 602 when the first bevel gear 602 rotates, the two sliding seats 502 are driven to move by the double-headed screw 504 when the double-headed screw 504 rotates, so that the two clamping plates 503 are driven to move close to each other by the two sliding seats 502, so that the clamping plates 503 are clamped on the cable, and then the relative movement of the two clamping plates 503 is driven by the driving assembly 7 and the transmission assembly 6 to clamp the two clamping plates 503 on the cable when the connecting rope 709 is broken, so as to fix the phase-to-phase spacer rod body 1 between the two cables.

[0035] In the embodiment, preferably, the sliding plate 704 is fixedly installed with a sliding column 706 close to one side of the connecting seat 4, the sliding column 706 penetrates through the side wall of the driving box 701 close to the connecting seat 4, the connecting disc 707 is fixedly installed on the end of the sliding column 706 away from the sliding plate 704, the connecting ring 708 is fixedly installed on the side of the connecting disc 707 away from the sliding column 706, and the end of the connecting rope 709 is fixedly connected with the connecting ring 708, so as to realize the connection between the connecting rope 709 and the sliding plate 704. The connecting disc 707 is made of rubber material, so that when the clamping plate 503 clamps the cable, the connecting disc 707 is attached to the outer wall of the transmission box 601, thereby closing the position of the sliding column 706 penetrating through the transmission box 601, and preventing rainwater from penetrating into the transmission box 601.

[0036] In the embodiment, preferably, the first magnetic block 711 is embedded and installed on the sliding plate 704, the limiting plate 710 is fixedly installed in the middle of the inner cavity of the driving box 701, the through hole for the rack 703 to penetrate through is formed in the limiting plate 710, the second magnetic block 712 is embedded and installed on the limiting plate 710, and the first magnetic block 711 and the second magnetic block 712 are magnetically attracted to each other. When the sliding plate 704 moves towards the limiting plate 710, the magnetic attraction force between the first magnetic block 711 and the second magnetic block 712 increases with the decrease of the distance between the sliding plate 704 and the limiting plate 710. When the first magnetic block 711 and the second magnetic block 712 are in contact, the clamping plate 503 just completes the clamping of the cable. The strong magnetic attraction force when the first magnetic block 711 and the second magnetic block 712 approach can compensate for the insufficient elasticity of the first spring 705, significantly improve the clamping force of the clamping plate 503 on the cable, ensure the firmness of the connection with the cable, and effectively prevent the clamping plate 503 from loosening. Even if the elasticity of the first spring 705 is weakened after long-term use, the magnetic attraction force can also ensure the clamping force of the clamping plate 503 on the cable.

[0037] According to the present application, when the connecting rope 709 is cut off, the first spring 705 drives the sliding plate 704 to move, and the transmission is realized through the straight gear 702, the first bevel gear 602, the second bevel gear 604 and the double-headed screw rod 504, so that the two clamping plates 503 move relative to each other to clamp the cable. The self-locking characteristic of the double-headed screw rod 504 prevents the clamping plate 503 from loosening. The power assembly such as the traditional wire press and the battery and the motor is not needed, the manufacturing cost of the spacer rod is significantly reduced, and the safety hazards such as explosion caused by thermal runaway of the battery are avoided. In addition, the first magnetic block 711 on the sliding plate 704 and the second magnetic block 712 on the limiting plate 710 are magnetically attracted to each other, which compensates for the insufficient elasticity of the spring and further enhances the clamping force, ensuring that the connection between the spacer rod and the cable is stable and reliable.

[0038] Because the length of the cable is long, the cable is in a micro-bending state, so that the distance between the upper and lower two cables has a certain difference, therefore, the distance between the two fixing assemblies 5 needs to be ensured to be close to the distance between the upper and lower two cables, for this, the following embodiment is provided.

[0039] Please refer to Figure 1 、 Figure 2 、 Figure 8 and Figure 9 In the embodiment of the application, two insulators 2 are arranged on the phase-to-phase spacer main body 1, a telescopic connecting assembly 3 is arranged between the two insulators 2, and the two insulators 2 are elastically connected through the telescopic connecting assembly 3; the telescopic connecting assembly 3 comprises a connecting cylinder 301, a connecting column 302 and a second spring 303, the connecting cylinder 301 and the connecting column 302 are fixedly connected with the two insulators 2 respectively, one end of the connecting column 302 extends into the inside of the connecting cylinder 301, the second spring 303 is arranged in the connecting cylinder 301, and the connecting column 302 is elastically connected with the connecting cylinder 301 through the second spring 303; through the arrangement of the connecting column 302, the connecting cylinder 301 and the spring, the overall length of the phase-to-phase spacer main body 1 can be changed, so that when the two cables move relatively, a certain buffer can be obtained through the telescopic connecting assembly 3, when the cables relatively displace due to wind force, thermal expansion and cold contraction and other factors, the telescopic connecting assembly 3 can absorb the impact force through the elastic deformation of the spring, and damage of the phase-to-phase spacer main body 1 caused by excessive stress due to rigid connection is avoided.

[0040] In the embodiment, preferably, a rope winding rod 8 is fixedly installed on one side of the connecting cylinder 301, a notch 801 is formed in the end of the rope winding rod 8 away from the connecting cylinder 301, the connecting rope 709 passes through the notch 801, a locking bolt 9 is threadedly installed on the end of the rope winding rod 8 away from the connecting cylinder 301, one end of the locking bolt 9 extends into the notch 801 and presses on the connecting rope 709, and the other end of the locking bolt 9 is fixedly installed with a knob 10; when it is needed to reduce the overall length of the phase-to-phase spacer main body 1, a part of the connecting rope 709 is wound on the rope winding rod 8, the more the number of the winding turns is, the shorter the length of the phase-to-phase spacer main body 1 is, after the length is adjusted to a proper length, the locking bolt 9 is tightened through the knob 10, so that the locking bolt 9 presses on the connecting rope 709 to lock the connecting rope 709; when installation, the distance between the two cables at the installation position can be measured through a long-distance distance measuring device, and then the phase-to-phase spacer main body 1 to be installed is adjusted to a proper length.

[0041] The application can make the length of the phase spacing rod body 1 flexibly adjust with the change of the spacing between the upper and lower cables, buffer the force when the cables move relatively, avoid the damage of the spacing rod caused by rigid connection, and the cooperation of the winding rod 8 and the locking bolt 9 can adjust the winding number of the connecting rope 709 according to the distance measurement result, accurately control the length of the spacing rod body, adapt to the cable installation demand of different spacing, improve the operation adaptability and installation reliability, and when the connecting rope 709 is cut off, the length of the phase spacing rod body 1 can be unlocked without other operations, and the installation convenience is improved.

[0042] The above is only the preferred embodiment of the application, so equivalent changes or modifications made according to the structure, features and principles described in the patent application range of the application are included in the patent application range of the application.

Claims

1. A power transmission line spacer rod, comprising a phase-to-phase spacer rod body (1) and a fixing assembly (5) arranged at both ends of the phase-to-phase spacer rod body (1), the fixing assembly (5) comprising a guide rail (501) and two oppositely arranged clamping plates (503), both ends of the phase-to-phase spacer rod body (1) are fixedly provided with a connecting seat (4), the guide rail (501) is fixedly connected with the connecting seat (4), and the two clamping plates (503) are slidingly connected with the guide rail (501), characterized in that: The transmission assembly (6) is arranged on the side of the guide rail (501) away from the connecting base (4), the drive assembly (7) is arranged on the side of the guide rail (501) away from the clamping plate (503), the drive assembly (7) is in transmission connection with the two clamping plates (503) through the transmission assembly (6) to drive the relative movement of the two clamping plates (503), the drive assembly (7) comprises a drive box (701), a sliding plate (704) slidingly arranged in the drive box (701), a first spring (705) arranged in the drive box (701) and a connecting rope (709), the sliding plate (704) is elastically connected to the side wall of the drive box (701) close to the connecting base (4) through the first spring (705), the first spring (705) is in a compressed state, and the two ends of the connecting rope (709) are connected with the sliding plates (704) in the two drive assemblies (7) respectively, and the sliding plate (704) moves to drive the clamping plate (503) to move through the transmission assembly (6).

2. A spacer for power transmission lines according to claim 1, characterized in that: The two sliding seats (502) are slidably arranged in the guide rail (501), the two clamping plates (503) are fixedly connected with the two sliding seats (502) respectively, and the double-head screw rod (504) is rotatably arranged in the guide rail (501) and penetrates the two sliding seats (502) and is in threaded connection with the two sliding seats (502).

3. A transmission line spacer according to claim 2, characterised in that: The transmission assembly (6) comprises a transmission box (601), a rotating shaft (603), a first bevel gear (602) and a second bevel gear (604), the transmission box (601) is fixedly arranged on the side of the guide rail (501) away from the connecting base (4), one end of the rotating shaft (603) is located in the transmission box (601), the other end of the rotating shaft (603) is located in the drive box (701), the rotating shaft (603) is in rotational fit with the transmission box (601) and the drive box (701), the first bevel gear (602) and the second bevel gear (604) are arranged in the transmission box (601), the top end of the double-head screw rod (504) extends into the transmission box (601), the first bevel gear (602) is fixedly sleeved on the top end of the double-head screw rod (504), one end of the rotating shaft (603) extending into the transmission box (601) is fixedly connected with the second bevel gear (604), and the first bevel gear (602) is in meshing connection with the second bevel gear (604).

4. A transmission line spacer according to claim 3, characterised in that: The drive assembly (7) further comprises a spur gear (702) and a rack (703), the rack (703) is fixedly arranged on the side of the sliding plate (704) away from the first spring (705), the spur gear (702) is fixedly sleeved on the end of the rotating shaft (603) extending into the drive box (701), and the rack (703) is in meshing connection with the spur gear (702).

5. A spacer for a power transmission line according to claim 3, characterized in that: The sliding plate (704) is fixedly installed with a sliding column (706) near one side of the connecting seat (4), the sliding column (706) penetrates through the side wall of the driving box (701) near the connecting seat (4), one end of the sliding column (706) away from the sliding plate (704) is fixedly installed with a connecting disc (707), one side of the connecting disc (707) away from the sliding column (706) is fixedly installed with a connecting ring (708), and the end of the connecting rope (709) is fixedly connected with the connecting ring (708).

6. A spacer for a power transmission line according to claim 4, characterized in that: The first magnetic block (711) is embedded and installed on the sliding plate (704), the limiting plate (710) is fixedly installed in the middle of the inner cavity of the driving box (701), the limiting plate (710) is provided with a through hole for the rack (703) to pass through, the second magnetic block (712) is embedded and installed on the limiting plate (710), and the first magnetic block (711) and the second magnetic block (712) are magnetically attracted.

7. A spacer for power transmission lines according to claim 1, characterized in that: The phase interval rod body (1) is provided with two insulators (2), the two insulators (2) are provided with a telescopic connecting assembly (3) therebetween, and the two insulators (2) are elastically connected through the telescopic connecting assembly (3).

8. A transmission line spacer according to claim 7, characterised in that: The telescopic connecting assembly (3) comprises a connecting barrel (301), a connecting column (302) and a second spring (303), the connecting barrel (301) and the connecting column (302) are fixedly connected with the two insulators (2) respectively, one end of the connecting column (302) extends into the inside of the connecting barrel (301), the second spring (303) is arranged in the connecting barrel (301), and the connecting column (302) is elastically connected with the connecting barrel (301) through the second spring (303).

9. A transmission line spacer according to claim 8, characterised in that: One side of the connecting barrel (301) is fixedly installed with a rope winding rod (8), one end of the rope winding rod (8) away from the connecting barrel (301) is provided with a notch (801), the connecting rope (709) passes through the notch (801), and the rope winding rod (8) is threadedly installed with a locking bolt (9) away from the connecting barrel (301), one end of the locking bolt (9) extends into the notch (801) and presses on the connecting rope (709), and the other end of the locking bolt (9) is fixedly installed with a knob (10).

10. A spacer for power transmission lines according to claim 5, characterized in that: The connecting disc (707) is made of rubber material, and when the clamping plate (503) clamps the cable, the connecting disc (707) is attached to the outer wall of the transmission box (601).

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