CN117096804B - A cable fixing device for power distribution network - Google Patents

Abstract

The invention relates to the field of power equipment, in particular to a cable fixing device for a power distribution network, which comprises a bottom plate and a connecting structure, wherein the upper end of the bottom plate is provided with a clamping and fastening structure; the invention is provided with the clamping and fastening structure, the rotating structure and the driving structure, thereby realizing the automatic adjustment of the length of the high-voltage wire according to the ambient temperature and avoiding the personnel from adjusting the high-voltage cable on the power distribution network one by one.

Description

A cable fixing device for power distribution network

Technical Field

The present invention relates to the field of electric power equipment, and in particular to a device for fixing cables in a distribution network.

Background technique

A distribution network refers to an electric power grid that receives electric energy from a transmission network or a regional power plant, distributes it locally through distribution facilities, or distributes it step by step according to voltage to various types of users. It is a network that plays an important role in distributing electric energy in the power grid. It includes three units: substation, transmission, and distribution. The task of the power grid is to transmit and distribute electric energy and change the voltage. At present, power grids are composed of a large circuit network composed of several poles to supply power. The distribution network is composed of overhead lines, cables, towers, distribution transformers, disconnectors, reactive power compensators and some ancillary facilities. It is a network that plays an important role in distributing electric energy in the power grid. The distribution network generally adopts a closed-loop design and open-loop operation, and its structure is radial. The closed-loop structure is adopted to improve the flexibility of operation and the reliability of power supply. The open-loop operation is to limit the short-circuit fault current on the one hand to prevent the circuit breaker from exceeding the breaking capacity and exploding, and on the other hand to control the scope of the fault and avoid the expansion of the scope of the fault power outage.

Chinese patent CN218386546U discloses a distribution network rack for distribution network planning, and its working principle is as follows: the fastening mechanism clamps the high-voltage wire, fixes the high-voltage wire in the distribution network rack through the action of the spring, the slide bar and the limit block adjust the tightness of the high-voltage wire, the clamping block and the clamping groove position and install the fixing plate, the wire threading groove prevents the high-voltage wire from falling off, and the fixing mechanism fixes the device.

In the above scheme, a fastening mechanism is used to clamp the high-voltage wire. When adjusting the length of the high-voltage wire, the staff needs to manually adjust the fastening mechanism to release or retract the high-voltage wire. The length of the high-voltage wire cannot be automatically adjusted according to the ambient temperature.

Summary of the invention

In view of the problems existing in the prior art, a distribution network cable fixing device is provided. The present invention is provided with a clamping and fastening structure, a rotating structure and a driving structure, so as to automatically adjust the length of the high-voltage wire according to the ambient temperature, avoiding the staff from adjusting the high-voltage cables on the distribution network one by one.

In order to solve the problems of the prior art, the present invention provides a distribution network cable fixing device, comprising a bottom plate, a connection structure for fixing a grid body is arranged at the lower end of the bottom plate, a clamping and fastening structure for clamping a high-voltage wire is arranged at the upper end of the bottom plate, the clamping and fastening structure comprises a mounting plate, two first limiting structures are arranged on the upper surface of the mounting plate, the two first limiting structures are arranged symmetrically about the center line of the mounting plate, a retracting and releasing structure for retracting and releasing redundant high-voltage wires is arranged between the bottom plate and the mounting plate, the retracting and releasing structure comprises a rotating structure for rotating the mounting plate, and both ends of the mounting plate are provided with a driving structure for driving the rotating structure to work The driving structure includes a connecting block, one end of the connecting block is inserted into a side of the end of the mounting plate that deviates from the center, and the other end of the connecting block is provided with a movable rod, one end of the movable rod is hinged to the other end of the connecting block, and the other end of the movable rod is provided with a sealing baffle. A cylinder is sleeved on the outside of the movable rod, and the sealing baffle is slidably arranged inside the cylinder. The inner diameter of the cylinder is the same as the outer diameter of the sealing baffle. A cover plate is provided at the open end of the cylinder, and an exhaust hole is provided on the surface of the cover plate. A thermal expansion medium is provided between the bottom of the cylinder and the sealing baffle. A support column is provided at one end of the cylinder, and the lower end of the support column is connected to the bottom plate, and the upper end of the support column is connected to the cylinder.

Preferably, two second limiting structures are provided on the upper surface of the base plate, and the two second limiting structures are respectively arranged below the two connecting blocks. The second limiting structure includes a rectangular plate, which is fixedly connected to the base plate. An arc groove is provided on the surface of the rectangular plate, and the opening of the arc groove faces the outside of the base plate. A pin shaft is provided at one end of the connecting block, and one end of the pin shaft passes through the mounting plate and the connecting block and cooperates with the arc groove.

Preferably, a connecting plate is also provided on the upper surface of the base plate, a rotating shaft is provided in the middle of the connecting plate, the lower end of the rotating shaft passes through the middle of the mounting plate, a locking nut is provided at the lower end of the rotating shaft, a ball pressure plate is provided between the locking nut and the lower surface of the base plate, a limiting plate is also provided on the upper surface of the base plate, the limiting plate is fixedly connected to the base plate, and a limiting groove is provided in the middle of the limiting plate.

Preferably, both ends of the upper surface of the base plate are provided with a stretching structure, the stretching structure is arranged between the support column and the cylinder, the stretching structure includes a first sliding sleeve, one end of the first sliding sleeve is connected to the support column, the other end of the first sliding sleeve is provided with a second sliding sleeve, one end of the second sliding sleeve is connected to the end of the cylinder, the other end of the second sliding sleeve is sleeved on the other end of the first sliding sleeve, a fourth pressure spring is arranged between the first sliding sleeve and the second sliding sleeve, and the two ends of the fourth pressure spring are respectively connected to the first sliding sleeve and the second sliding sleeve.

Preferably, one end of the movable rod is also provided with an annular fixing plate, which is fixedly connected to the movable rod, and a third pressure spring is provided on one side of the annular fixing plate. The third pressure spring is sleeved on the surface of the movable rod, one end of the third pressure spring is connected to the annular fixing plate, and the other end of the third pressure spring is connected to the cover plate.

Preferably, the first limiting structure includes a U-shaped plate, a vertical plate is provided on one side of the middle portion of the U-shaped plate deviating from the center, and an active clamping structure is provided at one end of the U-shaped plate close to the vertical plate, the active clamping structure includes a screw, the external transmission connection of the screw is provided with a screw sleeve, the screw sleeve is connected to one end of the U-shaped plate, one end of the screw is provided with a sleeve, one end of the sleeve is sleeved on one end of the screw, the middle of the sleeve is slidably connected to the vertical plate, and a first pressure spring is also sleeved on the surface of the screw, the two ends of the first pressure spring are respectively connected to the screw sleeve and the sleeve, a first wheel frame is provided at the other end of the sleeve, a first roller is provided in the first wheel frame, a first annular inner groove is provided on the outer circumferential surface of the first roller, and a passive clamping structure is provided at the other end of the U-shaped plate, the passive clamping structure includes a movable shaft, the movable shaft is slidably connected to the U-shaped plate, a second wheel frame is provided at one end of the movable shaft, a second roller is provided in the second wheel frame, and a second annular inner groove is provided on the outer circumferential surface of the second roller.

Preferably, a plurality of first sliding grooves are provided on the outer surface of the sleeve, a first limiting ring is sleeved on the outside of the sleeve, the first limiting ring is fixedly connected to the vertical plate, a plurality of first sliding blocks are provided inside the first limiting ring, the first sliding blocks cooperate with the first sliding grooves, a plurality of second sliding grooves are provided on the outer surface of the movable shaft, a second limiting ring is sleeved on the outside of the movable shaft, the second limiting ring is connected to the other end of the U-shaped plate, a plurality of second sliding blocks are provided inside the second limiting ring, the second sliding blocks cooperate with the second sliding grooves.

Preferably, a third limiting ring is provided at the other end of the movable shaft, the third limiting ring is connected to the movable shaft, a second pressure spring is provided on one side of the third limiting ring, one end of the second pressure spring is connected to the third limiting ring, and the other end of the second pressure spring is connected to the second limiting ring.

Preferably, both side surfaces of the first roller are provided with limiting rings, the limiting rings are fixedly connected to the first roller, and the outer diameter of the limiting rings is larger than the outer diameter of the first roller.

Preferably, a cover body is provided above the two first limiting structures, the lower end of the cover body is fixedly connected to the mounting plate, strip through grooves are provided on both side surfaces of the cover body, the two strip through grooves are symmetrically arranged about the center line of the cover body, and strip sheets are slidably arranged in the two strip through grooves.

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention is provided with a clamping and fastening structure, a rotating structure and a driving structure. When the temperature rises, the volume of the heat expansion medium increases, pushing the sealing plate to move along the cylinder, the sealing cover plate drives the movable rod to move, the movable rod pushes the mounting plate to rotate toward the outside of the bottom plate, and the rotation of the mounting plate causes the extended part of the high-voltage wire to be twisted. When the temperature drops, the volume of the heat expansion medium decreases, pulling the sealing baffle plate to move toward the bottom of the cylinder, the sealing baffle plate applies a pulling force to the movable rod, and the movable rod pulls the mounting plate to rotate toward the middle of the bottom plate, so that the clamping between the S-shaped high-voltage wire and the high-voltage wires on both sides of the device is reduced, and part of the twisted high-voltage wire is released, thereby realizing automatic adjustment of the length of the high-voltage wire according to the ambient temperature, avoiding the staff from adjusting the high-voltage cables on the distribution network one by one.

2. The present invention provides a second limiting structure. When the movable rod is subjected to the pulling force applied by the driving structure, the movable rod pulls the mounting plate to rotate toward the middle of the base plate, and the mounting plate drives the pin shaft to move along the arc groove. When the pin shaft moves to one end of the arc groove, the lower end of the pin shaft is tightly pressed against the groove wall of the arc groove, so that the pin shaft cannot move, thereby achieving the control of the rotation range of the mounting plate in a low temperature environment.

3. The present invention provides a limit plate, and a limit groove is opened in the middle of the limit plate. The connecting plate rotates until it abuts against the groove wall of the limit groove, and the connecting plate cannot continue to rotate, thereby controlling the maximum rotation angle of the mounting plate and preventing the high-voltage wire from being twisted too much when the temperature is high.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front view of a cable fixing device for a distribution network.

FIG. 2 is a perspective view of a distribution network cable fixing device.

FIG. 3 is a three-dimensional diagram of a distribution network cable fixing device with a hidden cover and a strip sheet.

FIG. 4 is a three-dimensional diagram of a retractable structure in a cable fixing device for a distribution network.

FIG. 5 is a partial enlarged view of point A in FIG. 4 .

FIG. 6 is a cross-sectional view of a driving structure in a distribution network cable fixing device.

FIG. 7 is a partial enlarged view of point B in FIG. 6 .

FIG. 8 is an exploded view of a rotating structure in a distribution network cable fixing device.

FIG. 9 is a stereoscopic view of a mounting plate and a first limiting structure in a distribution network cable fixing device.

FIG. 10 is a cross-sectional view of a mounting plate and a first limiting structure in a distribution network cable fixing device.

FIG. 11 is a three-dimensional view of an active clamping structure in a cable fixing device for a distribution network.

FIG. 12 is a three-dimensional view of a passive clamping structure in a distribution network cable fixing device.

The numbers in the figure are: 1-bottom plate; 2-connecting structure; 3-clamping and fastening structure; 31-mounting plate; 32-first limiting structure; 321-U-shaped plate; 3211-vertical plate; 322-active clamping structure; 3221-screw; 3222-screw sleeve; 3223-sleeve; 3224-first limiting ring; 3225-first slider; 3226-first pressure spring; 3227-first wheel frame; 3228-first roller; 3229-limiting ring; 323-passive clamping structure; 3231-movable shaft; 3232-second limiting ring; 3233-second slider; 3234-second wheel frame; 3235-second roller; 3236-third limiting ring; 3237-second pressure spring; 3 3-cover body; 331-strip through groove; 34-strip sheet; 4-retractable structure; 41-rotating structure; 411-connecting plate; 412-rotating shaft; 413-locking nut; 414-ball pressure sheet; 415-limiting plate; 4151-limiting groove; 42-driving structure; 421-connecting block; 422-movable rod; 423-sealing baffle; 424-cylinder; 425-cover plate; 426-thermal expansion medium; 427-support column; 428-annular fixing plate; 429-third pressure spring; 43-second limiting structure; 431-rectangular sheet; 4311-arc groove; 432-pin shaft; 44-stretching structure; 441-first sliding sleeve; 442-second sliding sleeve; 443-fourth pressure spring.

Detailed ways

In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

Referring to Figures 1 to 12: A distribution network cable fixing device includes a base plate 1, a connection structure 2 for fixing a grid body is provided at the lower end of the base plate 1, a clamping and fastening structure 3 for clamping a high-voltage wire is provided at the upper end of the base plate 1, the clamping and fastening structure includes a mounting plate 31, two first limiting structures 32 are provided on the upper surface of the mounting plate 31, and the two first limiting structures 32 are symmetrically arranged about the center line of the mounting plate 31, and a retracting structure 4 for retracting and releasing redundant high-voltage wires is provided between the base plate 1 and the mounting plate 31, and the retracting structure 4 includes a rotating structure 41 for rotating the mounting plate 31, and both ends of the mounting plate 31 are provided with a driving structure 42 for driving the rotating structure 41 to work, and the driving structure 42 includes a connecting block 421, and one end of the connecting block 421 is inserted into To the side of the end of the mounting plate 31 that deviates from the center, a movable rod 422 is provided at the other end of the connecting block 421, one end of the movable rod 422 is hinged to the other end of the connecting block 421, and a sealing baffle 423 is provided at the other end of the movable rod 422. A cylinder 424 is sleeved on the outside of the movable rod 422, and the sealing baffle 423 is slidably arranged inside the cylinder 424. The inner diameter of the cylinder 424 is the same as the outer diameter of the sealing baffle 423. A cover plate 425 is provided at the open end of the cylinder 424, and an exhaust hole is provided on the surface of the cover plate 425. A heat expansion medium 426 is provided between the bottom of the cylinder 424 and the sealing baffle 423. A support column 427 is provided at one end of the cylinder 424, and the lower end of the support column 427 is connected to the bottom plate 1, and the upper end of the support column 427 is connected to the cylinder 424.

Use the connecting structure 2 to fix the device, and then pass the high-voltage wire through the two first limiting structures 32. The two first limiting structures 32 clamp the high-voltage wire. The high-voltage wire presents an S shape between the two first limiting structures 32. The high-voltage wire is greatly affected by thermal expansion and contraction. When it is in a high-temperature environment in summer, the high-voltage wire expands due to heat, and the length of the high-voltage wire is extended. When it is in a low-temperature environment in winter, the high-voltage wire contracts due to cold, and the length of the high-voltage wire is shortened. The length of the high-voltage wire is adjusted by setting the retractable structure 4. When the temperature rises, the volume of the thermal expansion medium 426 increases, pushing the sealing plate to move along the cylinder 424, and the gas in the cylinder 424 is discharged from the exhaust hole to prevent the gas from being compressed and causing the sealing baffle 423 to be unable to move. The sealing cover plate 425 drives the movable rod 422 to move, and the movable rod 422 pushes the mounting plate 31 to rotate toward the outside of the base plate 1. The rotation of the mounting plate 31 causes the extended part of the high-voltage wire to be twisted. When the temperature drops, the volume of the thermal expansion medium 426 decreases, pulling the sealing baffle 423 to move toward the bottom of the cylinder 424. The sealing baffle 423 applies a pulling force to the movable rod 422, and the movable rod 422 pulls the mounting plate 31 to rotate toward the middle of the base plate 1, so that the clamping between the S-shaped high-voltage wire and the high-voltage wires on both sides of the device is reduced, releasing part of the twisted high-voltage wire, avoiding the high-voltage wire from shrinking and breaking, thereby realizing automatic adjustment of the length of the high-voltage wire according to the ambient temperature, avoiding the staff from adjusting the high-voltage cables on the distribution network one by one.

Referring to Figures 3, 4 and 5: two second limiting structures 43 are provided on the upper surface of the base plate 1, and the two second limiting structures 43 are respectively arranged under the two connecting blocks 421. The second limiting structure 43 includes a rectangular piece 431, which is fixedly connected to the base plate 1. An arc groove 4311 is provided on the surface of the rectangular piece 431, and the opening of the arc groove 4311 faces the outside of the base plate 1. A pin shaft 432 is provided at one end of the connecting block 421, and one end of the pin shaft 432 passes through the mounting plate 31 and the connecting block 421, and cooperates with the arc groove 4311.

In a low temperature environment, the movable rod 422 pulls the mounting plate 31 to rotate. When the mounting plate 31 rotates at an excessively large angle, the released high-voltage wires will be retracted again. By setting a second limiting structure 43, when the movable rod 422 is subjected to the pulling force applied by the driving structure 42, the movable rod 422 pulls the mounting plate 31 to rotate toward the middle of the base plate 1, and the mounting plate 31 drives the pin 432 to move along the arc groove 4311. When the pin 432 moves to one end of the arc groove 4311, the lower end of the pin 432 is pressed against the groove wall of the arc groove 4311, so that the pin 432 cannot move, thereby realizing the control of the rotation range of the mounting plate 31 in a low temperature environment.

Referring to Figures 3, 4 and 8: a connecting plate 411 is also provided on the upper surface of the base plate 1, a rotating shaft 412 is provided in the middle of the connecting plate 411, the lower end of the rotating shaft 412 passes through the middle of the mounting plate 31, a locking nut 413 is provided at the lower end of the rotating shaft 412, a ball pressure piece 414 is provided between the locking nut 413 and the lower surface of the base plate 1, a limiting plate 415 is also provided on the upper surface of the base plate 1, the limiting plate 415 is fixedly connected to the base plate 1, and a limiting groove 4151 is opened in the middle of the limiting plate 415.

The locking nut 413 fixes the connecting plate 411 on the bottom plate 1, and the ball pressure piece 414 reduces the friction between the locking nut 413 and the bottom plate 1, so that the surface friction between the connecting plate 411 and the mounting plate 31 is weakened. When the driving structure 42 drives the mounting plate 31 to rotate, the mounting plate 31 drives the connecting plate 411 to rotate, and the connecting plate 411 drives the rotating shaft 412 to rotate. The connecting plate 411 rotates in the limiting groove 4151 of the limiting plate 415. When the ambient temperature is high, the thermal expansion medium 426 applies a thrust to the movable rod 422 to twist the extended high-voltage wire. If the rotation amplitude of the mounting plate 31 is too large, the high-voltage wire will be twisted too much, resulting in the high-voltage wire being unable to work normally. By providing a limiting groove 4151 in the middle of the limiting plate 415, the connecting plate 411 rotates to abut against the groove wall of the limiting groove 4151, and the connecting plate 411 cannot continue to rotate, thereby achieving the maximum rotation angle of the controlling mounting plate 31 to avoid the high-voltage wire being twisted too much when the temperature is high.

Referring to Figures 4, 6 and 7: stretching structures 44 are provided at both ends of the upper surface of the base plate 1, and the stretching structure 44 is arranged between the support column 427 and the cylinder 424. The stretching structure 44 includes a first sleeve 441, one end of the first sleeve 441 is connected to the support column 427, and the other end of the first sleeve 441 is provided with a second sleeve 442, one end of the second sleeve 442 is connected to the end of the cylinder 424, and the other end of the second sleeve 442 is sleeved on the other end of the first sleeve 441, and a fourth pressure spring 443 is provided between the first sleeve 441 and the second sleeve 442, and the two ends of the fourth pressure spring 443 are respectively connected to the first sleeve 441 and the second sleeve 442.

When the temperature is low, the second limiting structure 43 limits the further rotation of the mounting plate 31. If the temperature drops further, the heat expansion medium 426 continues to shrink. The heat expansion medium 426 continues to apply tension to the movable rod 422, which may easily cause deformation of the pin 432 or damage to the driving structure 42. By setting the stretching structure 44, when the heat expansion medium 426 cannot pull the movable rod 422, the sleeve 3223 moves toward the movable rod 422. At this time, the fourth pressure spring 443 is stretched. The fourth pressure spring 443 absorbs the energy generated by the contraction of the heat expansion medium 426, thereby preventing the pin 432 or the driving structure 42 from being damaged when subjected to a large tension.

Referring to Figures 4 and 6: one end of the movable rod 422 is also provided with an annular fixing plate 428, the annular fixing plate 428 is fixedly connected to the movable rod 422, a third pressure spring 429 is provided on one side of the annular fixing plate 428, the third pressure spring 429 is sleeved on the surface of the movable rod 422, one end of the third pressure spring 429 is connected to the annular fixing plate 428, and the other end of the third pressure spring 429 is connected to the cover plate 425.

When the heat expansion medium 426 applies thrust to the movable rod 422 due to heat, the movable rod 422 moves toward the outside of the cylinder 424. Since the cover plate 425 is provided with an exhaust hole, the gas in the cylinder 424 is discharged, and the air pressure inside the cylinder 424 remains unchanged. Therefore, when the heat expansion medium 426 contracts due to cold, the air pressure inside the cylinder 424 cannot provide thrust. By setting the third pressure spring 429, the third pressure spring 429 is stretched during the process of the movable rod 422 extending out of the cylinder 424. When the heat expansion medium 426 contracts, the third pressure spring 429 contracts and applies tension to the movable rod 422, so that the movable rod 422 moves toward the inside of the cylinder 424, thereby preventing the movable rod 422 from being unable to move toward the inside of the cylinder 424.

Referring to Figures 3, 9, 10, 11 and 12: the first limiting structure 32 includes a U-shaped plate 321, a vertical plate 3211 is provided on the side of the middle part of the U-shaped plate 321 that deviates from the center, an active clamping structure 322 is provided at one end of the U-shaped plate 321 close to the vertical plate 3211, the active clamping structure 322 includes a screw rod 3221, the external transmission connection of the screw rod 3221 is connected with a screw sleeve 3222, the screw sleeve 3222 is connected to one end of the U-shaped plate 321, a sleeve 3223 is provided at one end of the screw rod 3221, one end of the sleeve 3223 is sleeved on one end of the screw rod 3221, the middle part of the sleeve 3223 is slidably connected to the vertical plate 3211, and the surface of the screw 3221 is also sleeved with a first pressure spring 3226, the two ends of the first pressure spring 3226 are respectively connected to the screw sleeve 3222 and the sleeve 3223, the other end of the sleeve 3223 is provided with a first wheel frame 3227, the first wheel frame 3227 is provided with a first roller 3228, the outer circumference of the first roller 3228 is provided with a first annular inner groove, the other end of the U-shaped plate 321 is provided with a passive clamping structure 323, the passive clamping structure 323 includes a movable shaft 3231, the movable shaft 3231 is slidably connected with the U-shaped plate 321, one end of the movable shaft 3231 is provided with a second wheel frame 3234, the second wheel frame 3234 is provided with a second roller 3235, and the outer circumference of the second roller 3235 is provided with a second annular inner groove.

The outer circumference of the first roller 3228 is tangent to the outer circumference of the second roller 3235. The connection between the first annular inner groove and the second annular inner groove forms a circular channel. The high-voltage wire passes through the circular channel in one first limiting structure 32 and then passes out from the circular channel in the other first limiting structure 32. Then, the screw rod 3221 is rotated. The rotation of the screw rod 3221 causes the screw sleeve 3222 to move away from the screw rod 3221. The first roller 3228 applies a thrust to the second roller 3235. The movable shaft 3231 moves along the U-shaped plate 3 21 moves, the first roller 3228 and the second roller 3235 clamp the high-voltage wire. When the staff pulls the high-voltage wire, the high-voltage wire applies a tangential force to the first roller 3228, the first roller 3228 rotates, and the second roller 3235 also rotates. A circular channel is always maintained between the first roller 3228 and the second roller 3235. The circular channel can limit the moving range of the high-voltage wire, thereby preventing the high-voltage wire from falling from between the first roller 3228 and the second roller 3235 during the movement.

Referring to Figures 11 and 12: a plurality of first sliding grooves are provided on the outer surface of the sleeve 3223, a first limiting ring 3224 is sleeved on the outside of the sleeve 3223, the first limiting ring 3224 is fixedly connected to the vertical plate 3211, a plurality of first sliders 3225 are provided inside the first limiting ring 3224, the first sliders 3225 cooperate with the first sliding grooves, a plurality of second sliding grooves are provided on the outer surface of the movable shaft 3231, a second limiting ring 3232 is sleeved on the outside of the movable shaft 3231, the second limiting ring 3232 is connected to the other end of the U-shaped plate 321, a plurality of second sliders 3233 are provided inside the second limiting ring 3232, the second sliders 3233 cooperate with the second sliding grooves.

After the first roller 3228 and the second roller 3235 clamp the high-voltage wire, the high-voltage wire will exert a downward force on the first roller 3228 and the second roller 3235 due to the falling force, and the first roller 3228 and the second roller 3235 will deflect. The first limiting ring 3224 is provided to limit the rotation of the sleeve 3223, so that the sleeve 3223 moves along the first slider 3225 under the action of the screw 3221, and the first slider 3225 keeps the first roller 3228 horizontal. The second limiting ring 3232 is provided to limit the rotation of the movable shaft 3231, so that the movable shaft 3231 moves along the second slider 3233 under the driving force, and the second slider 3233 keeps the second roller 3235 horizontal, so that the first roller 3228 and the second roller 3235 are in a horizontal state at the same time, thereby preventing the sleeve 3223 or the movable shaft 3231 from rotating, which causes the first roller 3228 and the second roller 3235 to be unable to form a circular channel between them.

Referring to Figures 10 and 12: A third limiting ring 3236 is provided at the other end of the movable shaft 3231, and the third limiting ring 3236 is connected to the movable shaft 3231. A second pressure spring 3237 is provided on one side of the third limiting ring 3236, and one end of the second pressure spring 3237 is connected to the third limiting ring 3236, and the other end of the second pressure spring 3237 is connected to the second limiting ring 3232.

After the first roller 3228 and the second roller 3235 clamp the high-voltage wire, the high-voltage wire is in the air and is greatly affected by the wind, so the high-voltage wire will swing. When the high-voltage wire swings, a force away from the first roller 3228 will be applied to the second roller 3235. If the second roller 3235 is not subjected to a force in the direction of the first roller 3228, the second roller 3235 will gradually move away from the first roller 3228, causing one side of the high-voltage wire to lose its supporting force, and the high-voltage wire will fall from the first roller 3228. By providing the second pressure spring 3237, the second pressure spring 3237 is stretched during the process of the first roller 3228 pushing the second roller 3235 to move, and the second pressure spring 3237 applies a force toward the first roller 3228 to the second roller 3235, so that the first roller 3228 and the second roller 3235 clamp the high-voltage wire, thereby preventing the high-voltage wire from falling from between the first roller 3228 and the second roller 3235 due to the swinging of the high-voltage wire.

10 and 11 , limiting rings 3229 are disposed on both sides of the first roller 3228 , the limiting rings 3229 are fixedly connected to the first roller 3228 , and the outer diameter of the limiting rings 3229 is greater than the outer diameter of the first roller 3228 .

The force exerted by the high-voltage wire on the first roller 3228 is greater than the force exerted by the high-voltage wire on the second roller 3235, and the first roller 3228 is more likely to deflect. Once the first roller 3228 and the second roller 3235 deflect differently, damage will be caused to the high-voltage wire. By setting two limit rings 3229, the two limit rings 3229 sandwich the second roller 3235 in the middle. When the first roller 3228 deflects, the two limit rings 3229 simultaneously drive the second roller 3235 to rotate, thereby allowing the first roller 3228 and the second roller 3235 to maintain synchronous movement.

Referring to Figures 2 and 3: a cover body 33 is provided above the two first limiting structures 32, the lower end of the cover body 33 is fixedly connected to the mounting plate 31, and strip through grooves 331 are provided on both side surfaces of the cover body 33, and the two strip through grooves 331 are symmetrically arranged about the center line of the cover body 33, and strip sheets 34 are slidably arranged in the two strip through grooves 331.

Birds like to build nests on the distribution grid, which affects the service life of the distribution grid and also affects the clamping and fastening structure 3 for clamping the high-voltage wires. By setting a cover body 33, the cover body 33 covers the two first limiting structures 32 on the mounting plate 31. The high-voltage cable passes through the strip through groove 331 on one side and then passes out from the strip through groove 331 on the other side. The strip sheet 34 covers the strip through groove 331 to prevent birds from entering the cover body 33 from the strip through groove 331, thereby protecting the first limiting structure 32.

The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims (9)

1. A distribution network cable fixing device, comprising a base plate (1), a connection structure (2) for fixing a grid body is arranged at the lower end of the base plate (1), and the characteristic is that a clamping and fastening structure (3) for clamping a high-voltage wire is arranged at the upper end of the base plate (1), and the clamping and fastening structure comprises a mounting plate (31), and two first limiting structures (32) are arranged on the upper surface of the mounting plate (31), and the two first limiting structures (32) are arranged symmetrically about the center line of the mounting plate (31), and a retracting and releasing structure (4) for retracting and releasing redundant high-voltage wires is arranged between the base plate (1) and the mounting plate (31), and the retracting and releasing structure (4) comprises a rotating structure (41) for rotating the mounting plate (31), and both ends of the mounting plate (31) are provided with a driving structure (42) for driving the rotating structure (41) to work, and the driving structure (42) comprises a connecting block (421), and one end of the connecting block (421) is inserted into the mounting plate The end portion (31) is deviated from the center, and the other end of the connecting block (421) is provided with a movable rod (422), one end of the movable rod (422) is hinged to the other end of the connecting block (421), and the other end of the movable rod (422) is provided with a sealing baffle (423), the outer portion of the movable rod (422) is sleeved with a cylinder (424), and the sealing baffle (423) is slidably arranged inside the cylinder (424), and the inner diameter of the cylinder (424) is symmetrical to the sealing baffle (423). The outer diameters of the sheets (423) are the same, a cover plate (425) is provided at the open end of the cylinder (424), an exhaust hole is provided on the surface of the cover plate (425), a thermal expansion medium (426) is provided between the bottom of the cylinder (424) and the sealing baffle (423), a support column (427) is provided at one end of the cylinder (424), the lower end of the support column (427) is connected to the bottom plate (1), and the upper end of the support column (427) is connected to the cylinder (424); The first limiting structure (32) comprises a U-shaped plate (321), a vertical plate (3211) is arranged on a side of the middle part of the U-shaped plate (321) that deviates from the center, an active clamping structure (322) is arranged on one end of the U-shaped plate (3211) that is close to the vertical plate (3211), the active clamping structure (322) comprises a screw rod (3221), an external transmission connection of the screw rod (3221) is provided with a screw sleeve (3222), the screw sleeve (3222) is connected to one end of the U-shaped plate (321), a sleeve (3223) is arranged at one end of the screw rod (3221), one end of the sleeve (3223) is sleeved on one end of the screw rod (3221), the middle part of the sleeve (3223) is slidably connected to the vertical plate (3211), and a first pressure spring (3226) is sleeved on the surface of the screw rod (3221), the first pressure spring (3226) is sleeved on the surface of the screw rod (3221), and the first pressure spring (3226) is sleeved on the surface of the screw rod (3221). The two ends of the spring (3226) are respectively connected to the screw sleeve (3222) and the sleeve (3223); the other end of the sleeve (3223) is provided with a first wheel frame (3227); a first roller (3228) is provided in the first wheel frame (3227); a first annular inner groove is provided on the outer circumference of the first roller (3228); a passive clamping structure (323) is provided at the other end of the U-shaped plate (321); the passive clamping structure (323) includes a movable shaft (3231); the movable shaft (3231) is slidably connected to the U-shaped plate (321); a second wheel frame (3234) is provided at one end of the movable shaft (3231); a second roller (3235) is provided in the second wheel frame (3234); a second annular inner groove is provided on the outer circumference of the second roller (3235). 2. A distribution network cable fixing device according to claim 1, characterized in that two second limiting structures (43) are provided on the upper surface of the base plate (1), and the two second limiting structures (43) are respectively arranged below the two connecting blocks (421), and the second limiting structure (43) includes a rectangular sheet (431), the rectangular sheet (431) is fixedly connected to the base plate (1), and an arc groove (4311) is provided on the surface of the rectangular sheet (431), and the opening of the arc groove (4311) faces the outside of the base plate (1), and a pin shaft (432) is provided at one end of the connecting block (421), and one end of the pin shaft (432) passes through the mounting plate (31) and the connecting block (421), and cooperates with the arc groove (4311). 3. A distribution network cable fixing device according to claim 2, characterized in that a connecting plate (411) is also provided on the upper surface of the base plate (1), a rotating shaft (412) is provided in the middle of the connecting plate (411), the lower end of the rotating shaft (412) passes through the middle of the mounting plate (31), a locking nut (413) is provided at the lower end of the rotating shaft (412), a ball pressure piece (414) is provided between the locking nut (413) and the lower surface of the base plate (1), a limiting plate (415) is also provided on the upper surface of the base plate (1), the limiting plate (415) is fixedly connected to the base plate (1), and a limiting groove (4151) is provided in the middle of the limiting plate (415). 4. A distribution network cable fixing device according to claim 3, characterized in that both ends of the upper surface of the base plate (1) are provided with a tensile structure (44), the tensile structure (44) is arranged between the support column (427) and the cylinder (424), the tensile structure (44) includes a first sliding sleeve (441), one end of the first sliding sleeve (441) is connected to the support column (427), the other end of the first sliding sleeve (441) is provided with a second sliding sleeve (442), one end of the second sliding sleeve (442) is connected to the end of the cylinder (424), the other end of the second sliding sleeve (442) is sleeved on the other end of the first sliding sleeve (441), a fourth pressure spring (443) is arranged between the first sliding sleeve (441) and the second sliding sleeve (442), and the two ends of the fourth pressure spring (443) are respectively connected to the first sliding sleeve (441) and the second sliding sleeve (442). 5. A distribution network cable fixing device according to claim 1, characterized in that one end of the movable rod (422) is also sleeved with an annular fixing plate (428), the annular fixing plate (428) is fixedly connected to the movable rod (422), and a third pressure spring (429) is provided on one side of the annular fixing plate (428), the third pressure spring (429) is sleeved on the surface of the movable rod (422), one end of the third pressure spring (429) is connected to the annular fixing plate (428), and the other end of the third pressure spring (429) is connected to the cover plate (425). 6. A distribution network cable fixing device according to claim 1, characterized in that a plurality of first sliding grooves are provided on the outer surface of the sleeve (3223), a first limiting ring (3224) is sleeved on the outside of the sleeve (3223), the first limiting ring (3224) is fixedly connected to the vertical plate (3211), a plurality of first sliding blocks (3225) are arranged inside the first limiting ring (3224), the first sliding blocks (3225) cooperate with the first sliding grooves, a plurality of second sliding grooves are provided on the outer surface of the movable shaft (3231), a second limiting ring (3232) is sleeved on the outside of the movable shaft (3231), the second limiting ring (3232) is connected to the other end of the U-shaped plate (321), a plurality of second sliding blocks (3233) are arranged inside the second limiting ring (3232), the second sliding blocks (3233) cooperate with the second sliding grooves. 7. A distribution network cable fixing device according to claim 6, characterized in that a third limiting ring (3236) is provided at the other end of the movable shaft (3231), the third limiting ring (3236) is connected to the movable shaft (3231), a second pressure spring (3237) is provided on one side of the third limiting ring (3236), one end of the second pressure spring (3237) is connected to the third limiting ring (3236), and the other end of the second pressure spring (3237) is connected to the second limiting ring (3232). 8. A distribution network cable fixing device according to claim 1, characterized in that limiting rings (3229) are provided on both sides of the first roller (3228), the limiting rings (3229) are fixedly connected to the first roller (3228), and the outer diameter of the limiting ring (3229) is larger than the outer diameter of the first roller (3228). 9. A distribution network cable fixing device according to claim 1, characterized in that a cover body (33) is provided above the two first limiting structures (32), the lower end of the cover body (33) is fixedly connected to the mounting plate (31), and strip-shaped through grooves (331) are provided on both side surfaces of the cover body (33), the two strip-shaped through grooves (331) are symmetrically arranged about the center line of the cover body (33), and strip sheets (34) are slidably arranged in the two strip-shaped through grooves (331).