CN118336592A - An overhead cable tensioning device - Google Patents
An overhead cable tensioning device Download PDFInfo
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- CN118336592A CN118336592A CN202410748409.5A CN202410748409A CN118336592A CN 118336592 A CN118336592 A CN 118336592A CN 202410748409 A CN202410748409 A CN 202410748409A CN 118336592 A CN118336592 A CN 118336592A
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- cable
- connecting plate
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- plate
- rods
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
- H02G1/04—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables for mounting or stretching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/28—Traversing devices; Package-shaping arrangements
- B65H54/2803—Traversing devices; Package-shaping arrangements with a traversely moving package
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/40—Arrangements for rotating packages
- B65H54/44—Arrangements for rotating packages in which the package, core, or former is engaged with, or secured to, a driven member rotatable about the axis of the package
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/34—Handled filamentary material electric cords or electric power cables
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- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention discloses an overhead cable tensioning device, which belongs to the field of cable maintenance and comprises two shells buckled by bolts and a winding mechanism arranged in the shells, wherein the winding mechanism comprises an upper connecting plate, a lower connecting plate and a plurality of winding rods for connecting the upper connecting plate and the lower connecting plate, the upper part of the upper connecting plate is provided with a plurality of connecting rods, the upper end of each connecting rod is connected with a fixing plate, and the upper part of each fixing plate is provided with a guide rod; the lower part of the lower connecting plate is connected with a rotary lifting mechanism. According to the invention, the winding mechanism is arranged, the rotary lifting mechanism is arranged at the lower part of the winding mechanism, and drives the winding mechanism to synchronously rotate and lift when the cable is required to be tensioned, so that the cable is uniformly wound on the winding mechanism, the effective regulation of the cable tensioning state is realized, and the winding mechanism can be wound for a plurality of turns when the cable is tensioned and regulated, the cable tensioning range is greatly increased, and the requirement of tensioning and using the cable with large sag is met.
Description
Technical Field
The invention belongs to the field of cable maintenance, and particularly relates to an overhead cable tensioning device.
Background
With the rapid development of the power industry, the power cable is used as an indispensable key medium for conveying electric energy in a power system, and the installation quality and the running state of the power cable have a crucial influence on the stability and the safety of the whole power system. The power cable not only relates to the laying of the cable, but also is more important to carry out proper tensioning adjustment on the cable during later maintenance so as to ensure that the cable can keep stable mechanical performance and electrical performance in the running process.
During maintenance of a power cable, the tension of the cable is an important parameter that requires constant attention and adjustment. The cable is applied with a predetermined tension on the tower through the wire pulling device so as to ensure the stability and the safety of the cable. However, although the initial tightening operation ensures stable operation of the cable, the cable is still subject to a number of factors during long-term operation, which may cause a change in sag of the cable, thereby affecting safe operation of the cable.
First, the sag of the cable will gradually increase under prolonged gravitational pull. This is due to the fact that the cable material undergoes a small deformation under the influence of gravity, which deformation gradually builds up over time, resulting in an increased sag of the cable. The increase of sag not only affects the mechanical properties of the cable, making it vulnerable to damage due to the influence of external forces, but also may cause too close a distance between the cables or between the cables and the tower, thereby causing a short circuit or a safety accident.
Second, external temperature variations are also important factors affecting cable sag. The thermal expansion and contraction characteristics of the cable material enable the cable material to change in length when the temperature changes, and further the sag of the cable is affected. Especially in high temperature environments, sag of the cable can increase significantly. The change of the sag not only can influence the mechanical performance of the cable, but also can have adverse effects on the electrical performance of the cable, such as changing the characteristics of resistance, inductance and the like of the cable, and reducing the stability and transmission efficiency of the power transmission line.
In addition, the environment with high wind force can also have an influence on the sag of the cable. Wind power can not only lead the cable to bear extra tension, but also possibly lead the cable to dance, thereby further aggravating the change of the cable length. Such variations not only increase the risk of cable damage, but may also pose a threat to the stable operation of the power system.
Notably, simple tightening of the two end nodes has not been effective when cable sag increases to some extent. To cope with this problem, there is a method of installing a tensioner on a cable. However, the existing tensioning device, such as an adjustable power supply cable fixing device disclosed in publication CN117748398B, has a limited tensioning range for cables, and cannot meet the requirement of tensioning and using large sag cables.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an overhead cable tensioning device which solves the problem that the cable electrical performance is affected by sag change in the long-term use process of the cable, realizes effective adjustment of the cable tensioning state, is used for coping with the influence of various factors on the cable sag, and has important significance in guaranteeing the stable operation of a power system and prolonging the service life of the cable.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the overhead cable tensioning device comprises two shells which are buckled by bolts and a winding mechanism arranged in the shells, wherein two wire passing grooves are respectively formed in two sides of each shell; the winding mechanism comprises an upper connecting plate, a lower connecting plate and a plurality of winding rods for connecting the upper connecting plate and the lower connecting plate, connecting shafts are arranged at two ends of each winding rod, at least two winding rods are arranged, and the connecting shafts at the lower ends of the winding rods penetrate through the lower connecting plate and are in threaded connection with locking nuts; the upper part of the upper connecting plate is provided with a plurality of connecting rods, the upper ends of the connecting rods are connected with a fixed plate, the upper parts of the fixed plates are provided with guide rods, the upper ends of the guide rods pass through the upper part of the shell in a clearance way, tension springs are sleeved outside the guide rods, the lower ends of the tension springs are connected with the fixed plate, and the upper ends of the tension springs are connected with the upper wall of the shell; the lower part of the lower connecting plate is connected with a rotary lifting mechanism, and when the cable needs to be tensioned, the rotary lifting mechanism drives the winding mechanism to synchronously perform rotary motion and the lifting mechanism, so that the cable is uniformly wound on the winding mechanism.
Further, the rotary lifting mechanism comprises a sleeve and a cylindrical cam which is installed in the sleeve in a clearance manner, the upper end of the cylindrical cam is fixedly connected with the lower connecting plate, the upper part of the sleeve is in threaded connection with a driving screw, the tail end of the driving screw extends into a cam groove of the cylindrical cam, the lower part of the sleeve is fixedly connected with a flange plate, and the flange plate is connected with the shell; one of them shell upper end fixedly connected with fixing screw, threaded connection has adjusting nut on the fixing screw, install bar clamp plate on the fixing screw with sliding, the one end of bar clamp plate offsets with the up end of guide arm.
Furthermore, a limit sleeve is arranged at the lower part of one end of the strip-shaped pressing plate, and the upper end of the guide rod is clamped inside the limit sleeve.
Further, the rotary lifting mechanism comprises a flange plate arranged at the lower part of the shell, the middle part of the flange plate is in threaded connection with a screw rod, and the upper end of the screw rod is fixedly connected with the lower connecting plate.
Still further still include damper, damper adopts preformed armor damper, and the preformed armor wire middle part of damper is connected with the connecting rod, and the connecting rod is connected with the lower terminal surface of cylindrical cam or lead screw.
Further, the wire passing rollers are rotatably arranged on the side walls of the wire passing grooves, and the wire passing rollers on two sides are obliquely arranged in an eight shape.
Further, an adjusting mechanism is arranged on the upper portion of the upper connecting plate, the adjusting mechanism comprises a center wheel and a plurality of planet wheels meshed with the outer side of the center wheel, the center wheel and the planet wheels are rotationally connected with the upper connecting plate, end plates are arranged on the upper portions of the center wheel and the planet wheels, the lower ends of connecting rods are fixedly arranged on the upper surfaces of the end plates, connecting arms are arranged on the planet wheels, the tail ends of the connecting arms are rotationally connected with the upper ends of winding rods, a plurality of arc grooves are formed in the upper connecting plate and the lower connecting plate, the centers of the planet wheels are used as circle centers, the center distance from the centers of the planet wheels to the winding rods is used as a radius, and connecting shafts of the winding rods are installed in the arc grooves in a clearance mode; the central wheel is fixedly connected with an adjusting shaft, the upper end of the adjusting shaft is fixedly connected with a handle, one end of the handle is connected with a locking screw in a threaded manner, and the lower end of the locking screw abuts against the upper surface of the end cover.
Still further, end plate upper portion is equipped with the spacing groove, be equipped with a plurality of second draw-in grooves of evenly arranging in the spacing groove, locking screw's lower extreme card is in the second draw-in groove.
Furthermore, the upper part of the end plate is fixedly connected with an open-type guide shaft support, and the open-type guide shaft support locks the adjusting shaft.
Still further, the arc groove outside of lower connecting plate is equipped with a plurality of evenly arranged first draw-in grooves, be equipped with the keyway on the connecting axle of wire winding pole lower extreme, the lower pot head of wire winding pole is equipped with the gasket, gasket inner circle integrated into one piece has the keybar, and the keybar is installed in the keyway slidingly, the gasket outer lane is equipped with the block, and lock nut locks the back, the block card is in first draw-in groove.
The beneficial effects of the invention are as follows:
1) According to the invention, the winding mechanism is arranged, the rotary lifting mechanism is arranged at the lower part of the winding mechanism, and drives the winding mechanism to synchronously rotate and lift when the cable is required to be tensioned, so that the cable is uniformly wound on the winding mechanism, the effective regulation of the cable tensioning state is realized, and the winding mechanism can be wound for a plurality of turns when the cable is tensioned and regulated, the cable tensioning range is greatly increased, and the requirement of tensioning and using the cable with large sag is met.
2) The splayed wire passing roller is arranged on the side wall of the wire passing groove, and when the cable is tensioned, the wire passing roller converts sliding friction between the cable and the wire passing groove into rolling friction between the cable and the wire passing roller, so that abrasion of the cable is reduced, and smoothness of cable tensioning is improved.
3) The regulating mechanism is arranged on the upper portion of the upper connecting plate, the central wheel drives the plurality of planetary wheels to synchronously rotate through the rotating handle, the connecting arm is utilized to drive the winding rods to outwards expand or inwards contract, the distance between the plurality of winding rods is regulated, the cable tensioning of different diameters is adapted, and cable breakage caused by too small bending radius during cable winding is avoided.
4) The second clamping groove and the open-type guide shaft support which limit the rotation of the locking screw are arranged on the upper portion of the end plate, multistage locking is carried out on the adjusting shaft, and the stability of the adjusting mechanism after adjustment is guaranteed.
5) The rotary lifting mechanism adopts a cylindrical cam structure, a driving screw is arranged on a sleeve outside the cylindrical cam, when a cable is tensioned, an adjusting nut is screwed to enable a bar-shaped pressing plate to press down a guide rod, the guide rod drives a winding mechanism and the cylindrical cam to move downwards, and when the cylindrical cam moves downwards, the cylindrical cam drives the winding mechanism to synchronously rotate under the interference of the driving screw, so that the cable is uniformly wound on the winding mechanism.
6) The rotary lifting mechanism adopts a screw rod structure, when the cable is tensioned, the screw rod is rotated, and the screw rod drives the winding mechanism to synchronously rotate and lift, so that the cable is uniformly wound on the winding mechanism.
7) The vibration damper is arranged at the lower part of the rotary lifting mechanism, so that vibration caused by wind power of the overhead line is reduced, fatigue damage of the wire caused by periodical bending is reduced, and stability and reliability of the overhead line are improved.
Drawings
Fig. 1 is a schematic structural view of an overhead cable tensioner according to the present invention.
Fig. 2 is an internal schematic view of an overhead cable tensioner of the present invention.
Fig. 3 is a schematic view of an enclosure of an overhead cable tensioner of the present invention.
Fig. 4 is an enlarged view of a portion of the overhead cable tensioner of the present invention at a in fig. 3.
Fig. 5 is a schematic view of an adjusting mechanism in an overhead cable tensioner of the present invention.
Fig. 6 is an exploded view of a winding rod, washer and lock nut in an overhead cable tensioner of the present invention.
Fig. 7 is a schematic view of a lower connection plate in an overhead cable tensioner of the present invention.
Fig. 8 is a schematic view of a rotary lifting mechanism of embodiment 1 of an overhead cable tensioner of the present invention.
Fig. 9 is a schematic view of a rotary lifting mechanism of embodiment 2 of an overhead cable tensioner of the present invention.
In the figure, 1, a shell; 11. a fixed screw; 12. a strip-shaped pressing plate; 13. a limit sleeve; 14. wire passing grooves; 15. a wire passing roller; 16. an adjusting nut;
2. A winding mechanism; 21. an upper connecting plate; 22. a lower connecting plate; 221. a first clamping groove; 23. a winding rod; 231. a connecting shaft; 232. a key slot; 233. a gasket; 234. a key bar; 235. a clamping table; 236. a lock nut; 24. a connecting rod; 25. a fixing plate; 26. a guide rod; 27. a tension spring; 28. an arc-shaped groove;
3. an adjusting mechanism; 31. a center wheel; 32. a planet wheel; 33. a connecting arm; 34. an adjusting shaft; 35. a handle; 36. locking the screw rod; 37. an end plate; 38. a second clamping groove; 39. an opening type guide shaft support;
4. a rotary lifting mechanism; 41. a flange plate; 42. a sleeve; 43. driving a screw; 44. a cylindrical cam; 45. a screw rod; 46. a connecting rod; 47. and (5) a damper.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 9, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Example 1
As shown in fig. 1 and 2, an overhead cable tensioning device comprises two shells 1 fastened by bolts and a winding mechanism 2 arranged in the shells 1, wherein as shown in fig. 3, two wire passing grooves 14 are respectively arranged on two sides of the shells 1 and used for a cable to pass through; as shown in fig. 2, the winding mechanism 2 includes an upper connecting plate 21, a lower connecting plate 22, and a plurality of winding rods 23 connecting the upper connecting plate 21 and the lower connecting plate 22, as shown in fig. 6, two ends of each winding rod 23 are provided with connecting shafts 231, at least two winding rods 23 are provided, and in this embodiment, three winding rods 23 are provided; when the tensioning device is installed on a cable, the lower connecting plate 22 is firstly taken down, the cable is placed between the winding rods 23 from the lower end of the winding rods 23, then the lower connecting plate 22 is connected with the winding rods 23, and the locking nut 236 is used for locking; as shown in fig. 2, the upper portion of the upper connecting plate 21 is provided with a plurality of connecting rods 24, the upper ends of the connecting rods 24 are connected with a fixing plate 25, the upper portion of the fixing plate 25 is provided with a guide rod 26, the upper ends of the guide rod 26 pass through the upper portion of the housing 1 in a clearance manner, a tension spring 27 is sleeved outside the guide rod 26, the lower ends of the tension springs 27 are connected with the fixing plate 25, the upper ends of the tension springs 27 are connected with the upper wall of the housing 1, and the tension springs 27 provide an upward tension to the winding mechanism 2, so that the winding mechanism 2 is positioned at the upper portion of the housing 1 in an initial state, and a sufficient winding space of the winding mechanism 2 is ensured; the lower connecting plate 22 lower part is connected with rotatory elevating system 4, and when the cable needs tensioning, rotatory elevating system 4 drives wire winding mechanism 2 and makes rotary motion and elevating system in step, twines the cable on wire winding mechanism 2 evenly, has not only realized the effective regulation of cable tensioning state, can twine many circles on wire winding mechanism 2 when cable tensioning is adjusted moreover, greatly increased the scope of cable tensioning, realized the requirement that the cable tensioning of big sag was used.
As shown in fig. 8, the rotary lifting mechanism 4 includes a sleeve 42 and a cylindrical cam 44 mounted in the sleeve 42 with a gap, the upper end of the cylindrical cam 44 is fixedly connected with the lower connecting plate 22, the upper portion of the sleeve 42 is connected with a driving screw 43 in a threaded manner, the tail end of the driving screw 43 extends into a cam groove of the cylindrical cam 44, the lower portion of the sleeve 42 is fixedly connected with a flange 41, and the flange 41 is connected with the housing 1; as shown in fig. 3, the upper end of one of the shells 1 is fixedly connected with a fixing screw rod 11, the fixing screw rod 11 is in threaded connection with an adjusting nut 16, a strip-shaped pressing plate 12 is slidably arranged on the fixing screw rod 11, and one end of the strip-shaped pressing plate 12 abuts against the upper end face of a guide rod 26; when the cable is tensioned, the adjusting nut 16 is screwed to enable the bar-shaped pressing plate 12 to press the guide rod 26, the guide rod 26 drives the winding mechanism 2 and the cylindrical cam 44 to move downwards, and when the cylindrical cam 44 moves downwards, the cylindrical cam 44 drives the winding mechanism 2 to synchronously rotate under the interference of the driving screw 43, so that the cable is uniformly wound on the winding mechanism 2.
As shown in fig. 3, a stop collar 13 is disposed at a lower portion of one end of the bar-shaped pressing plate 12, the upper end of the guide rod 26 is clamped inside the stop collar 13, the stop collar 13 limits the rotation of the bar-shaped pressing plate 12, and the bar-shaped pressing plate 12 is prevented from rotating along with the adjusting nut 16 when the adjusting nut 16 rotates, so that the bar-shaped pressing plate 12 is separated from the guide rod 26.
As shown in fig. 4, the wire passing roller 15 is rotatably installed on the side wall of the wire passing groove 14, when the cable is tensioned, the wire passing roller 15 converts the sliding friction between the cable and the wire passing groove 14 into the rolling friction between the cable and the wire passing roller 15, so that the abrasion of the cable is reduced, and the smoothness of the cable tensioning is improved; in addition, in order to adapt to the use when the cable tensioning of different diameters, the wire passing roller 15 of both sides is the slope of "eight" style of calligraphy and installs.
As shown in fig. 5, an adjusting mechanism 3 is arranged at the upper part of the upper connecting plate 21, the adjusting mechanism 3 comprises a central wheel 31 and a plurality of planet wheels 32 meshed with the outer side of the central wheel 31, the central wheel 31 and the planet wheels 32 are both rotatably connected with the upper connecting plate 21, an end plate 37 is arranged at the upper parts of the central wheel 31 and the planet wheels 32, the lower end of a connecting rod 24 is fixedly arranged on the upper surface of the end plate 37, a connecting arm 33 is arranged on the planet wheels 32, the tail end of the connecting arm 33 is rotatably connected with the upper end of a winding rod 23, a plurality of arc grooves 28 are arranged on the upper connecting plate 21 and the lower connecting plate 22, the arc grooves 28 are arranged by taking the center of the planet wheels 32 as circle centers and taking the distance from the center of the planet wheels 32 to the center of the winding rod 23 as radius, and a connecting shaft 231 of the winding rod 23 is installed in the arc grooves 28 in a clearance manner; an adjusting shaft 34 is fixedly connected to the center wheel 31, a handle 35 is fixedly connected to the upper end of the adjusting shaft 34, a locking screw 36 is connected to one end of the handle 35 in a threaded manner, and the lower end of the locking screw 36 abuts against the upper surface of the end cover; through rotating handle 35, center wheel 31 drives the synchronous rotation of a plurality of planet wheels 32, utilizes linking arm 33 to drive the outside expansion or the inside shrink of wire winding pole 23, adjusts the interval between a plurality of wire winding poles 23 to adapt to the cable tensioning of different diameters, avoids causing the cable fracture because of the radius of buckling is too little when the cable twines.
As shown in fig. 3, a limiting groove is formed in the upper portion of the end plate 37, a plurality of second clamping grooves 38 are uniformly arranged in the limiting groove, and the lower end of the locking screw 36 is clamped in the second clamping grooves 38, so that the reduction of the distance between the winding rods 23 due to slipping between the locking screw 36 and the end plate 37 is avoided.
As shown in fig. 3, the upper portion of the end plate 37 is fixedly connected with an open-type guide shaft support 39, the open-type guide shaft support 39 adopts the existing mature product, and the open-type guide shaft support 39 locks the adjusting shaft 34, so that the stability of the adjusting mechanism 3 after adjustment is further ensured.
As shown in fig. 7, a plurality of first clamping grooves 221 which are uniformly arranged are formed outside the arc-shaped groove 28 of the lower connecting plate 22, as shown in fig. 6, a key groove 232 is formed in the connecting shaft 231 at the lower end of the winding rod 23, a gasket 233 is sleeved at the lower end of the winding rod 23, a key bar 234 is integrally formed in the inner ring of the gasket 233, the key bar 234 is slidably arranged in the key groove 232, a clamping table 235 is arranged on the outer ring of the gasket 233, after the locking nut 236 is locked, the clamping table 235 is clamped in the first clamping groove 221, the lower end of the winding rod 23 is prevented from being close to the middle when the cable is wound, and the stability of the structure of the winding mechanism 2 is ensured.
Example 2
Unlike the embodiment 1, as shown in fig. 9, the rotary lifting mechanism 4 includes a flange 41 installed at the lower part of the housing 1, a screw 45 is screwed to the middle part of the flange 41, and the upper end of the screw 45 is fixedly connected with the lower connecting plate 22; when the screw rod 45 is rotated, the winding mechanism 2 is driven to synchronously rotate and lift, so that the cable is uniformly wound on the winding mechanism 2.
As shown in fig. 8 and 9, the vibration damper 47 is further included, the vibration damper 47 is a preformed armor rod type vibration damper 47, a connecting rod 46 is connected to the middle portion of a preformed armor rod of the vibration damper 47, the connecting rod 46 is connected with the cylindrical cam 44 or the lower end face of the screw rod 45, the cable tensioning device is generally installed at the lowest point of the cable sag, the vibration damper 47 is arranged at the lower portion of the cable tensioning device, vibration of an overhead line caused by wind power is reduced, fatigue damage of a wire caused by periodical bending is reduced, and stability and reliability of the overhead line are improved.
When overhead cable is maintained, when the sag of cable increases, install this overspeed device tensioner and carry out tensioning to the cable, the specific operation is: the housing 1 is opened, the locking nut 236 at the lower end of the winding rod 23 is unscrewed, the handle 35 is rotated according to the diameter of the cable, the interval between the plurality of winding rods 23 is adjusted, and then the adjusting shaft 34 is fixed by the locking screw 36 and the open-type guide shaft support 39. The cable is clamped between the plurality of winding rods 23 from the lower part of the winding rods 23, two ends of the cable are clamped into the wire passing groove 14, the lower connecting plate 22 is connected with the winding rods 23, the cable is limited between the upper connecting plate 21 and the lower connecting plate 22, then the two shells 1 are buckled by bolts, and the tensioning device is moved to the lowest point of the cable sag.
When the rotary lifting mechanism 4 of embodiment 1 is adopted, the adjusting nut 16 is screwed, the guide rod 26 is pressed downwards by the pressing plate, when the guide rod 26 moves downwards, the winding mechanism 2 also moves downwards, and when the lower connecting plate 22 drives the cylindrical cam 44 to move downwards, the cylindrical cam 44 is driven to rotate under the interference of the driving screw 43, so that the cable is uniformly wound on the outer side of the winding rod 23 from top to bottom.
When the rotary lifting mechanism 4 of embodiment 2 is adopted, the screw rod 45 is rotated, and when the screw rod 45 drives the winding mechanism 2 to rotate, the winding mechanism 2 is driven to synchronously move downwards, and the cable is uniformly wound outside the winding rod 23.
In addition, the vibration damper 47 is arranged at the lower part of the rotary lifting mechanism 4, so that vibration of the overhead line caused by wind power is reduced, fatigue damage of the wire caused by periodical bending is reduced, and stability and reliability of the overhead line are improved.
The foregoing is merely illustrative and explanatory of the invention, as it is well within the scope of the invention, as it is intended to cover various modifications, additions and substitutions to the specific embodiments disclosed and those skilled in the art, without departing from the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The overhead cable tensioning device comprises two shells which are buckled by bolts and a winding mechanism arranged in the shells, wherein two wire passing grooves are respectively formed in two sides of each shell; the winding mechanism is characterized by comprising an upper connecting plate, a lower connecting plate and a plurality of winding rods for connecting the upper connecting plate and the lower connecting plate, wherein two ends of each winding rod are respectively provided with a connecting shaft, at least two winding rods are arranged, and the connecting shafts at the lower ends of the winding rods penetrate through the lower connecting plate and are in threaded connection with locking nuts; the upper part of the upper connecting plate is provided with a plurality of connecting rods, the upper ends of the connecting rods are connected with a fixed plate, the upper parts of the fixed plates are provided with guide rods, the upper ends of the guide rods pass through the upper part of the shell in a clearance way, tension springs are sleeved outside the guide rods, the lower ends of the tension springs are connected with the fixed plate, and the upper ends of the tension springs are connected with the upper wall of the shell; the lower part of the lower connecting plate is connected with a rotary lifting mechanism, and when the cable needs to be tensioned, the rotary lifting mechanism drives the winding mechanism to synchronously perform rotary motion and the lifting mechanism, so that the cable is uniformly wound on the winding mechanism.
2. The overhead cable tensioning device according to claim 1, wherein the rotary lifting mechanism comprises a sleeve and a cylindrical cam which is installed in the sleeve in a clearance manner, the upper end of the cylindrical cam is fixedly connected with the lower connecting plate, the upper part of the sleeve is in threaded connection with a driving screw, the tail end of the driving screw extends into a cam groove of the cylindrical cam, the lower part of the sleeve is fixedly connected with a flange, and the flange is connected with the shell; one of them shell upper end fixedly connected with fixing screw, threaded connection has adjusting nut on the fixing screw, install bar clamp plate on the fixing screw with sliding, the one end of bar clamp plate offsets with the up end of guide arm.
3. The overhead cable tensioning device according to claim 2, wherein a limit sleeve is arranged at the lower part of one end of the strip-shaped pressing plate, and the upper end of the guide rod is clamped inside the limit sleeve.
4. The overhead cable tensioning device according to claim 1, wherein the rotary lifting mechanism comprises a flange plate arranged at the lower part of the shell, a screw rod is connected to the middle part of the flange plate in a threaded manner, and the upper end of the screw rod is fixedly connected with the lower connecting plate.
5. The overhead cable tensioning device according to claim 2 or 4, further comprising a damper, wherein the damper is a preformed damper, a connecting rod is connected to the middle of a preformed wire of the damper, and the connecting rod is connected to the lower end face of the cylindrical cam or the screw rod.
6. The overhead cable tensioning device according to claim 1, wherein the wire passing rollers are rotatably mounted on the side walls of the wire passing grooves, and the wire passing rollers on two sides are obliquely mounted in an eight shape.
7. An overhead cable tensioning device according to any one of claims 1-3, wherein an adjusting mechanism is arranged at the upper part of the upper connecting plate, the adjusting mechanism comprises a central wheel and a plurality of planetary wheels meshed with the outer side of the central wheel, the central wheel and the planetary wheels are both rotatably connected with the upper connecting plate, end plates are arranged at the upper parts of the central wheel and the planetary wheels, the lower ends of connecting rods are fixedly arranged on the upper surfaces of the end plates, connecting arms are arranged on the planetary wheels, the tail ends of the connecting arms are rotatably connected with the upper ends of winding rods, a plurality of arc-shaped grooves are formed in the upper connecting plate and the lower connecting plate, the arc-shaped grooves are arranged with the centers of the planetary wheels as circle centers and the center distance from the centers of the planetary wheels to the winding rods as radius, and the connecting shafts of the winding rods are installed in the arc-shaped grooves in a clearance manner; the central wheel is fixedly connected with an adjusting shaft, the upper end of the adjusting shaft is fixedly connected with a handle, one end of the handle is connected with a locking screw in a threaded manner, and the lower end of the locking screw abuts against the upper surface of the end cover.
8. The overhead cable tensioning device according to claim 7, wherein a limiting groove is formed in the upper portion of the end plate, a plurality of second clamping grooves which are uniformly arranged are formed in the limiting groove, and the lower end of the locking screw is clamped in the second clamping grooves.
9. The overhead cable tensioning device according to claim 8, wherein the upper portion of the end plate is fixedly connected with an open-type guide shaft support, and the open-type guide shaft support locks the adjusting shaft.
10. The overhead cable tensioning device according to claim 7, wherein a plurality of first clamping grooves which are uniformly arranged are formed in the outer portion of the arc-shaped groove of the lower connecting plate, a key groove is formed in the connecting shaft at the lower end of the winding rod, a gasket is sleeved at the lower end of the winding rod, a key bar is integrally formed in an inner ring of the gasket, the key bar is slidably arranged in the key groove, a clamping table is arranged on an outer ring of the gasket, and after locking of the locking nut, the clamping table is clamped in the first clamping groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| EP0520348A1 (en) * | 1991-06-27 | 1992-12-30 | BASF Magnetics GmbH | Gripping device for winding core |
| CN104184096A (en) * | 2014-08-11 | 2014-12-03 | 国家电网公司 | Automatic locking shockproof hammer |
| CN105314472A (en) * | 2015-12-03 | 2016-02-10 | 国家电网公司 | Take-up device for electric wire cable |
| CN205595701U (en) * | 2016-04-22 | 2016-09-21 | 梁山电力实业有限公司 | Transmission line tensioner bullwheel |
| CN208249524U (en) * | 2018-04-02 | 2018-12-18 | 南京市栖霞区电力设备安装工程有限公司 | A kind of power cable bobbin winder device |
| CN114069527A (en) * | 2021-11-15 | 2022-02-18 | 国网山东省电力公司单县供电公司 | Overhead line pole cable suspension bracket |
| CN216413864U (en) * | 2021-10-31 | 2022-04-29 | 段炜 | A tensioner bullwheel for electric power installation |
| CN216971560U (en) * | 2022-03-25 | 2022-07-15 | 宁夏远鹏建设工程有限公司 | Cable erection is with receiving and releasing wire device |
| CN218024719U (en) * | 2022-06-28 | 2022-12-13 | 河南科诺威工程技术有限公司 | Adjusting mechanism of electric power installation tensioner bullwheel |
-
2024
- 2024-06-12 CN CN202410748409.5A patent/CN118336592B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0520348A1 (en) * | 1991-06-27 | 1992-12-30 | BASF Magnetics GmbH | Gripping device for winding core |
| CN104184096A (en) * | 2014-08-11 | 2014-12-03 | 国家电网公司 | Automatic locking shockproof hammer |
| CN105314472A (en) * | 2015-12-03 | 2016-02-10 | 国家电网公司 | Take-up device for electric wire cable |
| CN205595701U (en) * | 2016-04-22 | 2016-09-21 | 梁山电力实业有限公司 | Transmission line tensioner bullwheel |
| CN208249524U (en) * | 2018-04-02 | 2018-12-18 | 南京市栖霞区电力设备安装工程有限公司 | A kind of power cable bobbin winder device |
| CN216413864U (en) * | 2021-10-31 | 2022-04-29 | 段炜 | A tensioner bullwheel for electric power installation |
| CN114069527A (en) * | 2021-11-15 | 2022-02-18 | 国网山东省电力公司单县供电公司 | Overhead line pole cable suspension bracket |
| CN216971560U (en) * | 2022-03-25 | 2022-07-15 | 宁夏远鹏建设工程有限公司 | Cable erection is with receiving and releasing wire device |
| CN218024719U (en) * | 2022-06-28 | 2022-12-13 | 河南科诺威工程技术有限公司 | Adjusting mechanism of electric power installation tensioner bullwheel |
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| CN118336592B (en) | 2024-08-13 |
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