Cable installation device for overhead line based on tension self-balancing

Abstract

The present application relates to the technical field of power cable, in particular to a kind of cable installation device for overhead line based on tension self-balancing.The cable is externally provided with inner sheath, the outer surface of the inner sheath is provided with outer sheath, and the one end of the cable is provided with fixing mechanism, and the fixing mechanism is used to fix the cable on the telegraph pole.The present application is provided with a plurality of tooth protrusions which are uniformly distributed on the outer surface of the inner sheath, so that a continuous wave-shaped structure is formed between the tooth protrusions and the tooth groove, and a metal clamping strip is additionally provided to further enhance the surface strength of the inner sheath, and the locking teeth and the clamping block are cooperated with each other to uniformly disperse the stress at the clamping plate to the tooth groove and the metal clamping strip.Meanwhile, the inner sheath is synchronously locked by the locking plate and the second locking assembly, so that the stress distribution on the surface of the inner sheath is further dispersed, and the risk of fracture of the inner sheath is reduced.

Description

Technical Field

[0001] This invention relates to the field of power cable technology, and more specifically, to a cable installation device for overhead power lines based on tension self-balancing. Background Technology

[0002] In the field of power engineering, the installation structure at the connection between the cable and the pole is a key device during the overhead installation of power lines, mainly used to fix the cable. Currently, the application scenarios of this device cover both indoor and outdoor environments. Outdoor operations often face complex weather conditions, especially when erecting cables at high altitudes, where wind disturbance to the cables is a particularly prominent issue.

[0003] In traditional high-altitude cable installation operations, installation devices mostly use ring-shaped connecting plates to secure cables. Workers must tightly fix the connecting plates at the connection point between the cable and the pole. However, in strong winds, cables are prone to swaying or vibration, causing relative slippage between the connecting plates and the cable. This phenomenon not only causes the actual cable installation length to exceed the preset value but also significantly reduces cable tension, directly affecting the safety and stability of the line.

[0004] To address the issue of cable slippage, existing technologies enhance friction by adding anti-slip pads to the contact surface between the connecting plate and the cable. While this method can suppress slippage to some extent, it has a significant drawback: stress concentration occurs at the contact area between the anti-slip pad and the cable, leading to a sudden increase in localized stress and greatly increasing the risk of breakage at the cable-pole connection. This defect is particularly pronounced under high load or long-term operation scenarios, seriously threatening the reliability of power lines. Summary of the Invention

[0005] The purpose of this invention is to provide a cable installation device for overhead power lines based on tension self-balancing, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, a cable installation device for overhead power lines based on tension self-balancing is provided, comprising a cable, an inner sheath on the outside of the cable, an outer sheath on the outside of the inner sheath, a fixing mechanism at one end of the cable for fixing the cable to a utility pole, a plurality of evenly distributed first-tooth protrusions on the outside of the inner sheath, a tooth groove being formed between two adjacent first-tooth protrusions, two symmetrically distributed grooves on the outside of the inner sheath, a plurality of second-tooth protrusions being fixedly connected inside the grooves, a first-locking component and a second-locking component being provided inside the outer sheath;

[0007] During cable installation, the fixing mechanism secures the cable to the utility pole. During the fixing process, the first locking component and the first toothed protrusion cooperate with each other, and the second locking component and the second toothed protrusion cooperate with each other to lock and fix the cable, and distribute the stress on the cable. The stress on the cable from the first locking component and the second locking component is further distributed to the tooth groove and the second toothed protrusion, respectively, to alleviate the external stress on the cable during fixing.

[0008] As a further improvement to this technical solution, the inner part of the outer sheath is also provided with an installation component. The installation component includes two slide rails fixedly connected to the inner wall of the outer sheath. The two slide rails are arranged symmetrically to each other. The first locking component includes a clamp plate fixedly disposed on one side of the slide rail. The overall shape of the clamp plate is crescent-shaped.

[0009] As a further improvement to this technical solution, a fixed bending rod is fixedly connected to one side of the clamping plate, and a number of locking teeth are rotatably connected to the outside of the fixed bending rod. A number of locking blocks are rotatably connected to the outside of the fixed bending rod, and the locking teeth and the locking blocks are staggered. A number of evenly distributed metal strips are fixedly connected to the outside of the inner sheath, and the number of first tooth protrusions and the number of metal strips are staggered. When the cable is locked, one end of the locking tooth abuts against the inside of the tooth groove, and the locking block engages with the metal strip.

[0010] As a further improvement to this technical solution, the second locking assembly includes a first rotating rod rotatably connected to one side of the slide rail. A limiting wheel is fixedly connected to the outside of the first rotating rod. When the cable is locked, one end of the limiting wheel is located inside the groove and abuts against one of the second toothed protrusions.

[0011] As a further improvement to this technical solution, two No. 1 gears are fixedly connected to the outside of the No. 1 rotating rod. The two No. 1 gears are symmetrically arranged at both ends of the limiting wheel. A sliding plate is slidably connected inside the slide rail. A No. 1 toothed belt is fixedly connected to the top of the sliding plate and near the two side edges. The No. 1 toothed belt meshes with the limiting wheel.

[0012] As a further improvement to this technical solution, a push rod is fixedly connected to the top of the sliding plate, and several spring rods are fixedly connected between the clamping plate and the slide rail. An arc-shaped groove is provided at one end of the clamping plate near the slide rail. When the cable is locked, the end of the push rod abuts against the convex surface of the arc-shaped groove.

[0013] As a further improvement to this technical solution, the fixing mechanism includes two symmetrically distributed connecting frames and four second rotating rods rotatably connected inside the outer sheath. The two connecting frames are slidably connected to each other. Both ends of the first rotating rod are fixedly connected to a first bevel gear, and one end of the second rotating rod is fixedly connected to a second bevel gear. The second bevel gear meshes with the first bevel gear.

[0014] As a further improvement to this technical solution, a second gear is fixedly connected to the other end of the second rotating rod, and a second toothed belt is fixedly connected to both sides of the inner wall of the connecting frame. The second gear meshes with the second toothed belt. A connecting block is fixedly connected to both ends of one of the connecting frames, and a locking screw is rotatably connected to both ends of the other connecting frame. The locking screw is threadedly connected to the connecting block.

[0015] As a further improvement to this technical solution, a fixed base plate is provided at the bottom of the connecting frame located below. An installation groove is provided on the top surface of the fixed base plate. At least two telescopic rods are fixedly connected inside the installation groove. The telescopic ends of the telescopic rods are fixedly connected to the bottom surface of the connecting frame located below.

[0016] As a further improvement to this technical solution, a locking plate is fixedly connected to one side of the inner wall of each of the two connecting frames. When the cable is locked, both locking plates abut against the outside of the inner sheath.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] In this cable installation device for overhead power lines based on tension self-balancing, uniformly distributed first-tooth protrusions are set on the outside of the inner sheath, so that multiple first-tooth protrusions and tooth grooves form a continuous wave-shaped structure. In addition, metal clips are added to further enhance the surface strength of the inner sheath. They cooperate with locking teeth and clips to evenly distribute the stress at the clamping plate to the tooth groove and metal clips. At the same time, the inner sheath is locked synchronously by locking plate and second locking assembly, which further disperses the stress distribution on the surface of the inner sheath and reduces the risk of inner sheath breakage.

[0019] Furthermore, if the fixing mechanism, locking component one, and locking component two are installed in stages, stress concentration will still occur if the cable is affected by wind during installation. Therefore, by turning the locking screw, the connecting frame can move the two locking plates closer together to lock the cable. During this process, the cooperation between the first toothed belt, the first gear, the second toothed belt, the second gear, the first bevel gear, and the second bevel gear can achieve the effect of synchronously driving the first and second locking components to lock the cable. This not only effectively improves the installation efficiency of the cable, but also achieves the effect of simultaneously applying locking force to the outside of the cable, further reducing the risk of the inner sheath breaking. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of some of the structures in this invention;

[0022] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A;

[0023] Figure 4 This is a schematic diagram of the overall structure of the mounting component, the first locking component, and the second locking component in this invention.

[0024] Figure 5 This is a schematic diagram of the overall structure of the No. 1 locking component in this invention;

[0025] Figure 6 This is a schematic diagram showing the state of the limit wheel when the second locking component is locked in this invention;

[0026] Figure 7 This is a schematic diagram showing the state of the locking teeth and the locking block when the first locking component of the present invention is locked;

[0027] Figure 8 This is a three-dimensional schematic diagram of the partial structure of the outer sheath after cross-section in this invention;

[0028] Figure 9 This is a schematic diagram of the overall structure of the present invention from the rear view.

[0029] The meanings of the labels in the diagram are as follows:

[0030] 1. Cables;

[0031] 2. Inner sheath; 21. First tooth protrusion; 22. Tooth groove; 23. Metal retaining strip; 24. Groove; 25. Second tooth protrusion;

[0032] 3. Outer sheath; 31. Mounting assembly; 311. Slide rail; 312. Sliding plate; 313. Push rod; 314. No. 1 toothed belt;

[0033] 32. Locking assembly No. 1; 321. Clamping plate; 322. Fixing bent rod; 323. Locking tooth; 324. Locking block; 325. Spring rod; 326. Arc-shaped protrusion;

[0034] 33. Locking assembly No. 2; 331. Limit wheel; 332. Gear No. 1; 333. Rotating rod No. 1; 334. Bevel gear No. 1;

[0035] 4. Fixing mechanism; 41. Connecting frame; 411. Locking plate; 42. Second bevel gear; 43. Second rotating rod; 44. Second gear; 45. Second toothed belt; 46. Connecting block; 47. Locking screw; 48. Fixing base plate; 49. Mounting groove; 410. Telescopic rod. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example: Please refer to Figure 1 - Figure 5 As shown, the purpose of this embodiment is to provide a cable installation device for overhead power lines based on tension self-balancing, including a cable 1, an inner sheath 2 on the outside of the cable 1, an outer sheath 3 on the outside of the inner sheath 2, a fixing mechanism 4 at one end of the cable 1 for fixing the cable 1 to the utility pole, a plurality of evenly distributed first tooth protrusions 21 on the outside of the inner sheath 2, a tooth groove 22 is formed between two adjacent first tooth protrusions 21, two symmetrically distributed grooves 24 are opened on the outside of the inner sheath 2, a plurality of second tooth protrusions 25 are fixedly connected inside the grooves 24, a first locking component 32 is provided inside the outer sheath 3, and a second locking component 33 is provided inside the outer sheath 3;

[0038] When installing cable 1, the fixing mechanism 4 fixes cable 1 to the utility pole. During the fixing process, locking component 32 and toothed protrusion 21 cooperate with each other, and locking component 33 and toothed protrusion 25 cooperate with each other to lock and fix cable 1, and distribute the stress on cable 1. The stress on cable 1 by locking component 32 and locking component 33 is further distributed to the toothed groove 22 and toothed protrusion 25 respectively, easing the external stress on cable 1 during fixing.

[0039] The inner sheath 2 covers the outside of the cable 1, the outer sheath 3 protects the connection between the cable 1 and the utility pole, and the fixing mechanism 4 is used to connect and fix the cable 1 to the utility pole. The first tooth protrusion 21 has a semi-circular shape, and several first tooth protrusions 21 are evenly distributed to form a continuous wave-shaped structure and tooth grooves 22, which cooperate with the first locking component 32. The wave-shaped structure disperses the axial tensile force on the cable 1 into multiple tooth grooves 22, thereby effectively avoiding local stress concentration on the cable 1. In addition, the first tooth protrusion 21 and tooth grooves 22 can make the surface of the inner sheath 2 uneven, thereby increasing the friction between the first locking component 32 and the inner sheath 2 and suppressing the slippage of the cable 1 caused by wind. At the same time, the second locking component 33 provides additional locking support points for the outside of the cable 1, enhances the bending resistance of the cable 1, and further disperses the stress to the outside of the inner sheath 2.

[0040] In addition, refer to Figure 2 - Figure 5 The outer sheath 3 is also provided with an installation component 31. The installation component 31 includes two slide rails 311 fixedly connected to the inner wall of the outer sheath 3. The two slide rails 311 are symmetrically arranged. The first locking component 32 includes a clamping plate 321 fixedly arranged on one side of the slide rail 311. The overall shape of the clamping plate 321 is crescent-shaped.

[0041] A fixed bending rod 322 is fixedly connected to one side of the clamping plate 321. Several locking teeth 323 are rotatably connected to the outside of the fixed bending rod 322. Several locking blocks 324 are rotatably connected to the outside of the fixed bending rod 322. Several locking teeth 323 and several locking blocks 324 are arranged alternately. Several evenly distributed metal strips 23 are fixedly connected to the outside of the inner sheath 2. Several first tooth protrusions 21 and several metal strips 23 are arranged alternately. When the cable 1 is locked, one end of the locking tooth 323 abuts against the inside of the tooth groove 22, and the locking block 324 engages with the metal strip 23.

[0042] The second locking assembly 33 includes a first rotating rod 333 rotatably connected to one side of the slide rail 311. A limit wheel 331 is fixedly connected to the outside of the first rotating rod 333. When the cable 1 is locked, one end of the limit wheel 331 is located inside the groove 24 and abuts against one of the second tooth protrusions 25.

[0043] refer to Figure 7 The crescent-shaped clamp 321 can fit better against the surface of the inner sheath 2. When the cable 1 is locked, the locking block 324 engages with the metal locking strip 23. The locking teeth 323 and the tooth groove 22 form a "gear-meshing groove" mechanical locking structure, which enhances the locking effect of the outer sheath 3 on the inner sheath 2. Furthermore, the metal locking strip 23 can further enhance the surface strength of the inner sheath 2.

[0044] refer to Figure 6 When cable 1 is locked, the limiting wheel 331 in the second locking assembly 33 abuts against the second tooth protrusion 25, which can provide an additional connection point for the outside of the inner sheath 2, thereby dispersing the stress on the outside of the inner sheath 2 and effectively avoiding stress concentration that could cause damage to the inner sheath 2.

[0045] Further reference Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 Two gears 332 are fixedly connected to the outside of the first rotating rod 333. The two gears 332 are symmetrically arranged at both ends of the limiting wheel 331. A sliding plate 312 is slidably connected inside the slide rail 311. A toothed belt 314 is fixedly connected to the top of the sliding plate 312 and near the two side edges. The toothed belt 314 meshes with the limiting wheel 331.

[0046] A push rod 313 is fixedly connected to the top of the sliding plate 312. Several spring rods 325 are fixedly connected between the clamping plate 321 and the slide rail 311. An arc-shaped groove 326 is provided at one end of the clamping plate 321 near the slide rail 311. When the cable 1 is locked, the end of the push rod 313 abuts against the convex surface of the arc-shaped groove 326.

[0047] The fixing mechanism 4 includes two symmetrically distributed connecting frames 41 and four second rotating rods 43 rotatably connected inside the outer sheath 3. The two connecting frames 41 are slidably connected to each other. Both ends of the first rotating rod 333 are fixedly connected to the first bevel gear 334. One end of the second rotating rod 43 is fixedly connected to the second bevel gear 42, and the second bevel gear 42 meshes with the first bevel gear 334.

[0048] The other end of the second rotating rod 43 is fixedly connected to the second gear 44. The inner walls of the connecting frame 41 are fixedly connected to the second toothed belt 45 on both sides. The second gear 44 meshes with the second toothed belt 45. The two ends of one connecting frame 41 are fixedly connected to the connecting block 46. The two ends of the other connecting frame 41 are rotatably connected to the locking screw 47. The locking screw 47 is threadedly connected to the connecting block 46.

[0049] A fixed base plate 48 is provided at the bottom of the lower connecting frame 41. The top surface of the fixed base plate 48 is provided with an installation groove 49. At least two telescopic rods 410 are fixedly connected inside the installation groove 49. The telescopic ends of the telescopic rods 410 are fixedly connected to the bottom surface of the lower connecting frame 41.

[0050] Locking plates 411 are fixedly connected to one side of the inner wall of each of the two connecting frames 41. When the cable 1 is locked, both locking plates 411 abut against the outside of the inner sheath 2.

[0051] One end of one connecting frame 41 has a groove, and the other connecting frame 41 is smaller and can slide into the groove. The telescopic rod 410 provides movement distance for the connecting frame 41 during installation. The fixed base plate 48 is fixed to the utility pole with bolts. The fixing mechanism 4 not only fixes the cable 1 to the utility pole, but also synchronously controls the locking of the first locking component 32 and the second locking component 33. The reason for achieving synchronous locking of the fixing mechanism 4, the first locking component 32, and the second locking component 33 is that if the fixing mechanism 4, the first locking component 32, and the second locking component 33 are installed in stages, stress concentration will still occur if the cable 1 is affected by wind during installation. Therefore, the specific process of the fixing mechanism 4 installing the cable 1 is as follows:

[0052] When the worker tightens the locking screw 47, the two connecting frames 41 slide closer to each other. During this process, the second toothed belt 45 rotates the second gear 44 through meshing, which in turn rotates the second bevel gear 42 through the second rotating rod 43. Similarly, the first bevel gear 334 is driven by the second bevel gear 42, causing the first rotating rod 333 and the limiting wheel 331 to rotate. After the limiting wheel 331 rotates, it abuts against the second toothed protrusion 25, thereby locking the inner sleeve 2. During the rotation of the limiting wheel 331, the first gears 332 at both ends mesh with the sliding plate 31 on which the first toothed belt 314 is installed. 2. The cable 1 slides within the slide rail 311, causing the push rod 313 to slide towards the arc-shaped groove 326. After the push rod 313 enters the arc-shaped groove 326, it pushes the clamping plate 321 closer to the inner sheath 2. During the approach process, the locking teeth 323 enter the tooth groove 22, and the locking block 324 gradually engages with the metal locking strip 23. Finally, the clamping plate 321 locks the inner sheath 2, and the two locking plates 411 lock the other end of the cable 1, achieving a triple locking effect simultaneously. This effectively improves the installation efficiency of the cable 1 and disperses the stress on the outside of the cable 1 to three places, effectively avoiding stress concentration on the outside of the cable 1.

[0053] The working principle of this device is as follows: When fixing cable 1 to the utility pole, the worker first passes cable 1 and inner sheath 2 through the inside of outer sheath 3, and passes one end of cable 1 and inner sheath 2 between two locking plates 411. Then, the worker uses a wrench or other tools to tighten the locking screws 47 on both sides. The locking screws 47 continuously enter the connecting block 46, causing the two connecting frames 41 to move closer together. During this process, the second toothed belt 45 rotates the second gear 44 through meshing, which in turn causes the second bevel gear 42 to rotate through the second rotating rod 43. Similarly, the first bevel gear 334 is driven by the second bevel gear 42, causing the first rotating rod 333 and the limit wheel 331 to rotate. After rotation, 31 abuts against the second toothed protrusion 25, thereby locking the inner sheath 2. During the rotation of the limit wheel 331, the first gear 332 at both ends of it meshes with the sliding plate 312 with the first toothed belt 314 installed, causing it to slide in the slide rail 311. This causes the push rod 313 to slide toward the arc-shaped protrusion 326. After the push rod 313 enters the arc-shaped protrusion 326, it pushes the clamping plate 321 closer to the inner sheath 2. During the approach process, the locking tooth 323 enters the tooth groove 22, and the locking block 324 gradually engages with the metal locking strip 23. Finally, the clamping plate 321 locks the inner sheath 2, and the two locking plates 411 lock the other end of the cable 1, thus realizing the connection between the cable 1 and the utility pole.

[0054] After installation, if the cable 1 sways due to wind, the locking plate 411, the first locking component 32, and the second locking component 33 can disperse the stress on the outside of the inner sheath 2 to three points, avoiding local stress concentration. The first toothed protrusion 21 and the toothed groove 22 form a wave-shaped structure, which increases the friction between the inner sheath 2 and the clamping plate 321, and also disperses the locking force of the first locking component 32 on the inner sheath 2 to multiple toothed grooves 22. At the same time, in conjunction with the first toothed protrusion 21 and the toothed groove 22, the surface of the inner sheath 2 is also made uneven, thereby increasing the friction between the first locking component 32 and the inner sheath 2, suppressing the slippage of the cable 1 caused by wind. The metal clip 23 can also enhance the external strength of the inner sheath 2. The second locking component 33 provides an additional locking support point for the outside of the cable 1, enhancing the bending resistance of the cable 1.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cable installation device for overhead power lines based on tension self-balancing, comprising a cable (1), wherein the cable (1) is provided with an inner sheath (2), characterized in that: The inner sheath (2) is provided with an outer sheath (3). One end of the cable (1) is provided with a fixing mechanism (4). The fixing mechanism (4) is used to fix the cable (1) to the utility pole. The outer side of the inner sheath (2) is provided with a number of evenly distributed first tooth protrusions (21). A tooth groove (22) is formed between two adjacent first tooth protrusions (21). The outer side of the inner sheath (2) is provided with two symmetrically distributed grooves (24). A number of second tooth protrusions (25) are fixedly connected inside the grooves (24). The outer sheath (3) is provided with a first locking component (32). The outer sheath (3) is provided with a second locking component (33). When installing the cable (1), the fixing mechanism (4) fixes the cable (1) to the utility pole. During the fixing process, the first locking component (32) and the first toothed protrusion (21) cooperate with each other, and the second locking component (33) and the second toothed protrusion (25) cooperate with each other to lock and fix the cable (1) and disperse the stress position of the cable (1). The stress on the cable (1) by the first locking component (32) and the second locking component (33) is further dispersed to the tooth groove (22) and the second toothed protrusion (25) respectively, so as to alleviate the stress on the cable (1) when it is fixed. The outer sheath (3) is also provided with an installation component (31). The installation component (31) includes two slide rails (311) fixedly connected to the inner wall of the outer sheath (3). The two slide rails (311) are symmetrically arranged. The first locking component (32) includes a clamping plate (321) fixedly arranged on one side of the slide rail (311). The overall shape of the clamping plate (321) is crescent-shaped. A fixed bending rod (322) is fixedly connected to one side of the clamp (321). A number of locking teeth (323) are rotatably connected to the outside of the fixed bending rod (322). A number of locking blocks (324) are rotatably connected to the outside of the fixed bending rod (322). The locking teeth (323) and the locking blocks (324) are staggered. A number of evenly distributed metal strips (23) are fixedly connected to the outside of the inner sheath (2). A number of first tooth protrusions (21) and the metal strips (23) are staggered. When the cable (1) is locked, one end of the locking tooth (323) abuts against the inside of the tooth groove (22), and the locking block (324) engages with the metal strip (23). The second locking assembly (33) includes a first rotating rod (333) rotatably connected to one side of the slide rail (311). The first rotating rod (333) is externally fixedly connected to a limiting wheel (331). When the cable (1) is locked, one end of the limiting wheel (331) is located inside the groove (24) and abuts against one of the second tooth protrusions (25).

2. The cable installation device for overhead power lines based on tension self-balancing according to claim 1, characterized in that: The first rotating rod (333) is externally fixedly connected to two first gears (332), which are symmetrically arranged at both ends of the limiting wheel (331). The slide rail (311) is internally slidably connected to a sliding plate (312). A first toothed belt (314) is fixedly connected to the top of the sliding plate (312) and near the two side edges. The first toothed belt (314) meshes with the limiting wheel (331).

3. The cable installation device for overhead power lines based on tension self-balancing according to claim 2, characterized in that: A push rod (313) is fixedly connected to the top of the sliding plate (312), and a number of spring rods (325) are fixedly connected between the clamping plate (321) and the slide rail (311). An arc-shaped groove (326) is provided at one end of the clamping plate (321) near the slide rail (311). When the cable (1) is locked, the end of the push rod (313) abuts against the convex surface of the arc-shaped groove (326).

4. The cable installation device for overhead power lines based on tension self-balancing according to claim 2, characterized in that: The fixing mechanism (4) includes two symmetrically distributed connecting frames (41) and four rotating rods (43) rotatably connected inside the outer sheath (3). The two connecting frames (41) are slidably connected to each other. Both ends of the first rotating rod (333) are fixedly connected to a first bevel gear (334). One end of the second rotating rod (43) is fixedly connected to a second bevel gear (42). The second bevel gear (42) meshes with the first bevel gear (334).

5. A cable installation device for overhead power lines based on tension self-balancing according to claim 4, characterized in that: The other end of the second rotating rod (43) is fixedly connected to the second gear (44), and the two sides of the inner wall of the connecting frame (41) are fixedly connected to the second toothed belt (45). The second gear (44) meshes with the second toothed belt (45). One end of the connecting frame (41) is fixedly connected to the connecting block (46), and the other end of the connecting frame (41) is rotatably connected to the locking screw (47). The locking screw (47) is threadedly connected to the connecting block (46).

6. A cable installation device for overhead power lines based on tension self-balancing according to claim 5, characterized in that: A fixed base plate (48) is provided at the bottom of the connecting frame (41) located below. An installation groove (49) is provided on the top surface of the fixed base plate (48). At least two telescopic rods (410) are fixedly connected inside the installation groove (49). The telescopic ends of the telescopic rods (410) are fixedly connected to the bottom surface of the connecting frame (41) located below.

7. A cable installation device for overhead power lines based on tension self-balancing according to claim 6, characterized in that: Locking plates (411) are fixedly connected to one side of the inner wall of each of the two connecting frames (41). When the cable (1) is locked, both locking plates (411) abut against the outside of the inner sheath (2).

Images