CN117306937B - Corner cross arm of power line - Google Patents
Corner cross arm of power line Download PDFInfo
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- CN117306937B CN117306937B CN202311615548.2A CN202311615548A CN117306937B CN 117306937 B CN117306937 B CN 117306937B CN 202311615548 A CN202311615548 A CN 202311615548A CN 117306937 B CN117306937 B CN 117306937B
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- 238000009434 installation Methods 0.000 claims description 32
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 230000035939 shock Effects 0.000 claims description 16
- 239000006096 absorbing agent Substances 0.000 claims description 15
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 claims description 3
- 239000012211 strain insulator Substances 0.000 abstract 2
- 239000002131 composite material Substances 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/24—Cross arms
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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
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/20—Spatial arrangements or dispositions of lines or cables on poles, posts or towers
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Electric Cable Installation (AREA)
Abstract
The invention relates to the technical field of electric power cross arms, in particular to an electric power line corner cross arm, which adjusts the distance between an outer wire and an inner wire according to the angle of a wire corner so that the distance between the wires and a tower rod meet the requirement of electric intervals; the cross arm comprises a mounting main body, cross arm arms and extension pieces, wherein the cross arm arms are arranged on two sides of the mounting main body, and the extension piece is arranged on the end part of one cross arm to two sides; still include sleeve pipe, telescopic link, adjusting ring, bracing piece and strain insulator subassembly, the tip of another cross arm sets up the sleeve pipe to both sides, two telescopic links telescopic installs in two sheathed tube tip, telescopic link and sheathed tube combined length are greater than the length of extension, two adjusting ring rotation are installed in the lower part of installing the main part, the lower extreme of two bracing pieces is connected with two adjusting rings respectively, the upper end of two bracing pieces is connected with two telescopic links respectively, all install strain insulator subassembly on two extension and the two telescopic links.
Description
Technical Field
The invention relates to the technical field of electric power cross arms, in particular to an electric power line corner cross arm.
Background
The electric power cross arm is an important component in the electric power tower, and the electric power cross arm is used for installing insulators and hardware fittings to support wires and lightning wires and keep a certain safety distance according to regulations. The electric power corner cross arm is a support rod for installing an insulator and a hardware fitting on an electric power tower at a corner, and the electric wire needs to be supported and also bears transverse prestress. The spacing between the plurality of wires on the power corner cross arm and the spacing between the wires and the tower pole also ensure enough insulation distance.
In the prior art, various line corner cross arms are proposed, for example, a corner tower is proposed in Chinese patent application with publication number of CN110374389A, the corner tower adopts a double-layer double-composite cross arm design, a tension-resistant fixing piece is arranged on the composite cross arm, a wire is fixed on the composite cross arm through a tension-resistant wire clamp, an angle is arranged between an upper layer of cross arm and a lower layer of cross arm, the wire fixedly connected to the cross arm can be turned, and the angle between the upper layer of cross arm and the lower layer of cross arm can be adjusted according to actual conditions; for example, the distance between two wires at the corner of the outer corner and the tower body can be increased under the condition of not changing the length of the cross arm by arranging an extension piece at the outer corner of the corner tower, so as to meet the electric gap between the wires and the tower body.
The interval of many wires in prior art can diminish at the corner, causes wire spare electrical space too little easily, though in prior art through the extension piece that is little outside big in the corner setting, can increase the interval between the wire, but because the angle of wire corner is different, but the length of the extension piece of corner among the prior art is unadjustable for the corner angle that current electrical corner cross arm can adapt to is limited.
Disclosure of Invention
In order to solve the technical problems, the invention provides a power line corner cross arm which adjusts the distance between an outer wire and an inner wire according to the angle of the wire corner, so that the distance between the wires and a tower rod meet the requirement of electrical spacing.
The invention relates to a corner cross arm of a power line, which comprises a mounting main body, cross arm arms and extension pieces, wherein the mounting main body is mounted on a tower pole, the two sides of the mounting main body are provided with the cross arm arms, and the end part of one cross arm is provided with the extension piece towards the two sides; the telescopic support comprises a main body, two telescopic rods, adjusting rings, supporting rods and tension-resistant components, wherein the two telescopic rods are respectively arranged in the two sleeve ends in a telescopic manner, the combined length of the telescopic rods and the sleeves is larger than that of an extension piece, the two adjusting rings are rotatably arranged at the lower part of the main body, the lower ends of the two supporting rods are respectively connected with the two adjusting rings, the upper ends of the two supporting rods are respectively connected with the two telescopic rods, and the tension-resistant components are respectively arranged on the two extension pieces and the two telescopic rods and are used for being connected with wires; during operation, with installation main part movable mounting in the bottom of pole, according to the angle size of wire corner, adjust telescopic link and stretch out sleeve pipe's length, rotate the adjusting ring simultaneously, make the lower extreme of bracing piece follow the installation main part with the opposite side of corresponding telescopic link the same side rotation of telescopic link, after the telescopic link is adjusted in place, with bracing piece and adjusting ring and telescopic link locking fixed, make bracing piece slope support the telescopic link, with adjusting ring locking in the installation main part, with the telescopic link locking on corresponding sleeve pipe, telescopic link and the adjusting ring of the same operation opposite side, at this moment, two telescopic links stretch out respectively from two sheathed tube tip, telescopic link and sheathed tube combined length are greater than the length of extension, be connected a plurality of strain subassemblies respectively with the wire for the corner department of a plurality of strain subassemblies traction wire, hoist the installation main part to the top of pole, the staff is high with installation main part and pole fastening installation, and the length of sleeve pipe and telescopic link can be adjusted according to the angle size of wire corner, and have reliable support, make between wire and the tower have between the angle and the wire and follow the electrical requirement, the universal structure is good.
Preferably, the installation main body comprises a left part, a right part and a plurality of ear plates, the left part is semi-annular, the inner side of the left part is matched with the tower pole, the cross arm is installed on the outer side wall of the left part, the two sides of the left part are respectively provided with the plurality of ear plates, the right part is identical to the left part in structure and is symmetrically arranged, and the plurality of ear plates on the left part and the right part are fastened and connected through bolts; the left part and the right part are fastened with a plurality of ear plates through bolts, so that the left part and the right part are conveniently installed on the tower pole in a surrounding mode on the ground, the installation mode of the tower pole is simple and stable, and the split design can also facilitate the transportation of workers and improve the installation convenience.
Preferably, the tower crane further comprises two diagonal bracing blocks, two rotating shafts, a plurality of steel teeth and a plurality of torsion springs, wherein the upper ends of the two diagonal bracing blocks are respectively rotatably arranged on the inner side walls of the left part and the right part through the two rotating shafts, the plurality of steel teeth are respectively arranged on the inner side walls of the lower ends of the two diagonal bracing blocks, the two ends of the two rotating shafts are respectively elastically connected with the left part or the right part through the torsion springs, and the lower ends of the two diagonal bracing blocks are contacted with the tower rod through the elasticity of the plurality of torsion springs; after the left part and the right part are encircling and pre-installed at the bottom of the tower pole, a plurality of steel teeth on the lower ends of the two diagonal braces are contacted with the outer wall of the tower pole under the action of the elasticity of a plurality of torsion springs, after the left part and the right part are hoisted to the top appointed position of the tower pole, the crane slowly releases the left part and the right part, so that the plurality of steel teeth at the lower ends of the two diagonal braces bite the outer wall of the tower pole, the two diagonal braces support the left part and the right part through two rotating shafts, the left part and the right part can be prevented from falling at a high position, the protection effect is achieved, and the safety of operation is improved.
Preferably, the adjusting ring comprises two hoops and two connecting plates II, the two hoops are oppositely arranged to form a circular ring, the two hoops of the circular ring are rotationally sleeved at the lower part of the left and right combined body, the butt joint ends of the two hoops are connected with the bolts through the two connecting plates II, and the outer wall of one hoop is provided with a mounting plate connected with the supporting rod; after the left part and the right part are combined into an integral ring, the two hoops are connected with a plurality of bolts through the two connecting plates and are rotationally sleeved on the lower parts of the left part and the right part, so that the cooperation with the left part and the right part is realized, the two hoops are conveniently rotationally sleeved on the left part and the right part on the ground, and the installation convenience is improved.
Preferably, the device also comprises an annular slideway, wherein the lower outer walls of the left part and the right part are respectively provided with the annular slideway, and two annular hoops of the circular type are rotatably sleeved in the annular slideway; the annular slideway limits and guides the two annular hoops of the annular form, so that the two annular hoops of the annular form are prevented from moving up and down, and the supporting stability of the supporting rod is improved.
Preferably, the telescopic sleeve comprises a sleeve body, a telescopic rod, a plurality of annular slideways, a plurality of threaded holes, a plurality of fastening bolts, a plurality of connecting bolts and a plurality of connecting bolts, wherein the annular slideways facing the sleeve body and the telescopic rod are uniformly provided with the plurality of threaded holes; when the telescopic rod is adjusted to extend out of the length of the sleeve, the supporting rod drives the hoop to rotate in the annular slideway, and under the condition that the telescopic rod extends out of a sufficient length, the plurality of fastening bolts are in threaded connection with the nearby threaded holes, so that the hoop is locked, and the locking stability of the hoop is improved.
Preferably, the tension-resistant assembly comprises a steel rope and an insulating terminal, one end of the steel rope is connected with the extension piece or the telescopic rod, the other end of the steel rope is connected with the insulating terminal, and the insulating terminal is connected with the wire; after the wire is connected with the insulated terminals, transverse stress and gravity of the wire at the corner act on the steel cable, and the wire is arranged between the two insulated terminals in a jumper mode, so that the wire is prevented from being bent excessively at the corner, the wire is protected, the distance between the wire and a tower pole can be increased through setting the direction of the jumper, and the technology is mature and reliable.
Preferably, the device further comprises a connecting piece, shock absorbers, springs and sliding blocks, wherein the middle part of the steel cable is movably connected with the extension piece or the telescopic rod, the inner end of the steel cable is connected with the connecting piece, the connecting piece is arranged on the sliding blocks, the sliding blocks are slidably arranged on the cross arm, one ends of the two shock absorbers are fixedly connected with the cross arm, the other ends of the shock absorbers are connected with the sliding blocks, and the springs are elastically connected with the two ends of the shock absorbers; because the middle part and extension piece or telescopic link swing joint of cable wire, when the wire receives wind-force effect or expend with heat and contract with cold, the wire of connecting piece both sides pulls or releases two cable wires through two insulated terminals, and two cable wires pull connecting piece and slider and remove along the cross arm after the direction of the swing joint portion of extension piece or telescopic link, at the in-process that the slider removed, bumper shock absorber and spring cooperation are cushioned to reduce the vibration amplitude of wire and cross arm and tower pole, improve the stability of device.
Preferably, the telescopic pulley further comprises a plurality of pulley blocks, the pulley blocks are respectively arranged on the extension piece and the telescopic rod, each pulley block consists of at least two adjacent pulleys, and the middle part of the steel cable passes through the guide grooves of the adjacent pulleys; by arranging a plurality of pulley blocks, friction is reduced when a plurality of steel ropes are tensioned and released by a wire, and therefore the service life of the steel ropes is prolonged.
Compared with the prior art, the invention has the beneficial effects that: during operation, with installation main part movable mounting in the bottom of pole, according to the angle size of wire corner, adjust telescopic link and stretch out sleeve pipe's length, rotate the adjusting ring simultaneously, make the lower extreme of bracing piece follow the installation main part with the opposite side of corresponding telescopic link the same side rotation of telescopic link, after the telescopic link is adjusted in place, with bracing piece and adjusting ring and telescopic link locking fixed, make bracing piece slope support the telescopic link, with adjusting ring locking in the installation main part, with the telescopic link locking on corresponding sleeve pipe, telescopic link and the adjusting ring of the same operation opposite side, at this moment, two telescopic links stretch out respectively from two sheathed tube tip, telescopic link and sheathed tube combined length are greater than the length of extension, be connected a plurality of strain subassemblies respectively with the wire for the corner department of a plurality of strain subassemblies traction wire, hoist the installation main part to the top of pole, the staff is high with installation main part and pole fastening installation, and the length of sleeve pipe and telescopic link can be adjusted according to the angle size of wire corner, and have reliable support, make between wire and the tower have between the angle and the wire and follow the electrical requirement, the universal structure is good.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the bottom construction of the present invention;
FIG. 3 is a schematic view of the bottom view of the present invention with the adjusting ring and support bar removed;
FIG. 4 is a schematic view of the structure of the adjusting ring and the support rod;
FIG. 5 is a schematic view of the front cross-section of the present invention in its installed state;
FIG. 6 is a schematic top view of the present invention in an installed state;
FIG. 7 is a schematic view of the structure of the present invention in an exploded state;
FIG. 8 is a schematic illustration of an axially oriented structure of the present invention in an installed state;
the reference numerals in the drawings: 1. a mounting main body; 2. a cross arm; 3. an extension; 4. a sleeve; 5. a telescopic rod; 6. an adjusting ring; 7. a support rod; 8. a tension-resistant component; 9. a left part; 10. a right part; 11. ear plates; 12. a diagonal brace block; 13. a rotating shaft; 14. steel teeth; 15. a torsion spring; 16. an annular slideway; 17. a threaded hole; 18. a fastening bolt; 19. a wire rope; 20. an insulated terminal; 21. a connecting piece; 22. a damper; 23. a spring; 24. a slide block; 25. a hoop; 26. a second connecting plate; 27. pulley block.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. This invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Example 1
As shown in fig. 1, 2 and 3, a corner cross arm for a power line comprises a mounting main body 1, cross arm arms 2 and extension pieces 3, wherein the mounting main body 1 is mounted on a tower pole, the cross arm arms 2 are arranged at two sides of the mounting main body 1, and the extension pieces 3 are arranged at two sides of the end part of one cross arm 2; the tension-resistant sleeve is characterized by further comprising a sleeve 4, telescopic rods 5, adjusting rings 6, supporting rods 7 and tension-resistant assemblies 8, wherein the sleeve 4 is arranged at the end part of the other cross arm 2 towards two sides, the two telescopic rods 5 are respectively and telescopically arranged in the end parts of the two sleeves 4, the combined length of the telescopic rods 5 and the sleeves 4 is larger than that of the extension piece 3, the two adjusting rings 6 are rotatably arranged at the lower part of the installation main body 1, the lower ends of the two supporting rods 7 are respectively connected with the two adjusting rings 6, the upper ends of the two supporting rods 7 are respectively connected with the two telescopic rods 5, the tension-resistant assemblies 8 are respectively arranged on the two extension pieces 3 and the two telescopic rods 5, and the tension-resistant assemblies 8 are used for being connected with wires.
During operation, with installation main part 1 movable mounting in the bottom of pole, according to the angle size of wire corner, adjust telescopic link 5 and stretch out the length of sleeve pipe 4, rotate adjusting ring 6 simultaneously, make the lower extreme of bracing piece 7 follow installation main part 1 with the opposite side of corresponding telescopic link 5 the same side rotation of telescopic link 5, after telescopic link 5 adjusts in place, with bracing piece 7 and adjusting ring 6 and telescopic link 5 locking fixed for bracing piece 7 slope support telescopic link 5, with adjusting ring 6 locking on installation main part 1, will telescopic link 5 locking on corresponding sleeve pipe 4, the telescopic link 5 and the adjusting ring 6 of the same operation opposite side, at this moment, two telescopic link 5 stretch out from the tip of two sleeve pipes 4 respectively, telescopic link 5 and sleeve pipe 4's combined length is greater than the length of extension piece 3, with a plurality of strain insulator-components 8 respectively with the wire connection for the corner department of a plurality of strain components 8 traction wire, with installation main part 1 to the top of pole, the staff is ascending with installation main part 1 and pole fastening installation, sleeve pipe 4 and pole 5's length can carry out the angle between the angle of wire and the angle of the pole is big and the angle of support is big, and the angle between the electrical demand is good, and the electrical clearance between the pole has the electrical demand.
Example 2
As shown in fig. 5 and 7, the installation main body 1 comprises a left part 9, a right part 10 and a plurality of ear plates 11, the left part 9 is semi-annular, the inner side of the left part 9 is matched with a tower pole, the cross arm 2 is installed on the outer side wall of the left part 9, the two sides of the left part 9 are respectively provided with the plurality of ear plates 11, the right part 10 and the left part 9 are identical in structure and are symmetrically arranged, and the plurality of ear plates 11 on the left part 9 and the right part 10 are connected through bolt fastening; the tower crane structure further comprises two diagonal bracing blocks 12, two rotating shafts 13, a plurality of steel teeth 14 and a plurality of torsion springs 15, wherein the upper ends of the two diagonal bracing blocks 12 are respectively installed on the inner side walls of the left part 9 and the right part 10 in a rotating mode through the two rotating shafts 13, the plurality of steel teeth 14 are respectively arranged on the inner side walls of the lower ends of the two diagonal bracing blocks 12, the two ends of the two rotating shafts 13 are respectively in elastic connection with the left part 9 or the right part 10 through the torsion springs 15, and the lower ends of the two diagonal bracing blocks 12 are in contact with a tower rod through the elasticity of the plurality of torsion springs 15.
The left part 9 and the right part 10 are fastened by bolts to fasten a plurality of ear plates 11, thereby being convenient for installing the left part 9 and the right part 10 on the tower pole in an encircling manner on the ground, being simple and stable in installation mode with the tower pole, being convenient for staff to carry by a split design, being capable of preventing the left part 9 and the right part 10 from falling down at a high place after encircling the bottom of the tower pole and being in contact with the tower pole or the outer wall by a plurality of steel teeth 14 on the lower ends of two diagonal bracing blocks 12 under the elastic force of a plurality of torsion springs 15, and being capable of slowly releasing the left part 9 and the right part 10 by the crane after hoisting the left part 9 and the right part 10 to the top appointed position of the tower pole, so that the outer wall of the tower pole is snapped by a plurality of steel teeth 14 on the lower ends of two diagonal bracing blocks 12, being convenient for two diagonal bracing blocks 12 to support the left part 9 and the right part 10 by two rotating shafts 13, being capable of avoiding the left part 9 and the right part 10 from falling down at the high place, playing a role in protection, and improving the safety of operation.
Example 3
As shown in fig. 2, 3 and 4, on the basis of embodiment 2, the adjusting ring 6 comprises two hoops 25 and two connecting plates two 26, the two hoops 25 are oppositely arranged to form a ring, the two hoops 25 of the ring are rotatably sleeved at the lower part of the combination of the left part 9 and the right part 10, the butt joint ends of the two hoops 25 are connected through the two connecting plates two 26 and bolts, and the outer wall of one hoop 25 is provided with a mounting plate connected with the supporting rod 7; the device also comprises an annular slideway 16, wherein the annular slideway 16 is arranged on the outer walls of the lower parts of the left part 9 and the right part 10, and two annular hoops 25 of a circular ring are sleeved in the annular slideway 16 in a rotating way; the telescopic sleeve comprises a sleeve body 4, a telescopic rod 5 and a plurality of annular slideways 16 which are arranged on the sleeve body 4 and the telescopic rod 5, and is characterized by further comprising a plurality of threaded holes 17 and a plurality of fastening bolts 18, wherein the plurality of threaded holes 17 are uniformly formed in the annular slideways 16 which face the sleeve body 4 and the telescopic rod 5, the plurality of fastening bolts 18 are inserted into two sides of the annular hoop 25, and the plurality of fastening bolts 18 are fastened in the plurality of threaded holes 17 in a threaded mode.
After the left part 9 and the right part 10 are combined into an integral ring shape, the two hoops 25 are connected and rotationally sleeved in the lower annular slide ways 16 of the left part 9 and the right part 10 through the two connecting plates II 26 and a plurality of bolts, so that the cooperation with the left part 9 and the right part 10 is realized, the two hoops 25 are conveniently rotationally sleeved on the left part 9 and the right part 10 on the ground, the annular slide ways 16 limit and guide the two hoops 25 of the ring shape, the two hoops 25 of the ring shape are prevented from moving up and down, the supporting stability of the supporting rod 7 is improved, the supporting rod 7 drives the hoops 25 to rotate in the annular slide ways 16 when the length of the telescopic rod 5 extending out of the sleeve 4 is adjusted, and a plurality of fastening bolts 18 are in threaded connection with nearby threaded holes 17 under the condition that the telescopic rod 5 extends out enough length, so that the hoops 25 are locked, and the locking stability of the hoops 25 is improved.
Example 4
As shown in fig. 6, 7 and 8, on the basis of embodiment 1, the tension module 8 includes a wire rope 19 and an insulated terminal 20, one end of the wire rope 19 is connected to the extension member 3 or the telescopic rod 5, the other end of the wire rope 19 is connected to the insulated terminal 20, and the insulated terminal 20 is connected to a wire; the novel cross arm comprises a cross arm body 2, a connecting piece 21, shock absorbers 22, springs 23 and sliding blocks 24, wherein the middle part of a steel cable 19 is movably connected with an extension piece 3 or a telescopic rod 5, the inner end of the steel cable 19 is connected with the connecting piece 21, the connecting piece 21 is arranged on the sliding blocks 24, the sliding blocks 24 are slidably arranged on the cross arm body 2, one ends of the two shock absorbers 22 are fixedly connected with the cross arm body 2, the other ends of the shock absorbers 22 are connected with the sliding blocks 24, and the springs 23 are elastically connected with the two ends of the shock absorbers 22; the telescopic pulley further comprises a plurality of pulley blocks 27, the pulley blocks 27 are respectively arranged on the extension piece 3 and the telescopic rod 5, each pulley block 27 consists of at least two adjacent pulleys, and the middle part of the steel cable 19 passes through the guide grooves of the adjacent pulleys.
After the wire is connected with the insulated terminals 20, transverse stress and gravity of the wire at the corner are enabled to act on the wire ropes 19, the wire is arranged between the two insulated terminals 20 in a jumper mode, and accordingly the wire is prevented from being bent excessively at the corner, the wire ropes can be protected, the distance between the wire ropes and a tower pole can be increased through the arrangement of the direction of the wire ropes, due to the fact that the middle of the wire ropes 19 is movably connected with the extension piece 3 or the telescopic rod 5 through the pulley blocks 27, when the wire ropes are subjected to wind force or expansion and contraction, the wire ropes on two sides of the connecting piece 21 pull or release the two wire ropes 19 through the two insulated terminals 20, the connecting piece 21 and the sliding block 24 are pulled to move along the cross arm 2 after being guided through the two pulley blocks 27, in the moving process of the sliding block 24, the shock absorber 22 and the spring 23 are matched to absorb shock, accordingly the vibration amplitude of the wire ropes, the wire ropes and the cross arm and the tower pole can be reduced, friction can be reduced when the wire ropes are tensioned and released, and the service life of the wire ropes 19 can be prolonged.
As shown in fig. 1 to 8, in the electric power line corner cross arm of the present invention, when in operation, the left part 9 and the right part 10 are movably installed at the bottom of a tower pole through the ear plate 11 and the bolt, a plurality of hoops 25 are relatively connected and sleeved in a plurality of annular slide ways 16 through a plurality of connecting plates two 26 and the bolt, two ends of a supporting rod 7 are respectively and movably connected with a connecting plate of the hoops 25 and a telescopic rod 5, the length of the telescopic rod 5 extending out of the sleeve 4 is adjusted according to the angle of a wire corner, then the two hoops 25 are rotated, the lower end of the supporting rod 7 is rotated from the opposite side of the annular slide way 16 to the corresponding telescopic rod 5 towards the same side of the telescopic rod 5, after the telescopic rod 5 is adjusted in place, a plurality of fastening bolts 18 are in threaded connection with the nearby threaded holes 17, the hoops 25 are locked in the annular slide way 16, the supporting rod 7 is locked and fixed with the hoops 25 and the telescopic rod 5, the support rod 7 is made to support the telescopic rod 5 in an inclined manner, the telescopic rod 5 is locked on the corresponding sleeve 4, the telescopic rod 5 and the support rod 7 on the other side are operated in the same manner, at the moment, the two telescopic rods 5 are respectively extended out of the end parts of the two sleeves 4, the combined length of the telescopic rods 5 and the sleeves 4 is larger than that of the extension piece 3, then a plurality of insulated terminals 20 are respectively connected with the wires, a plurality of steel ropes 19 draw the corners of the wires, the installation main body 1 is hoisted to the top of the tower, the crane slowly releases the left part 9 and the right part 10, a plurality of steel teeth 14 at the lower ends of the two diagonal braces 12 bite the outer wall of the tower, the two diagonal braces 12 support the left part 9 and the right part 10 through two rotating shafts 13, the left part 9 and the right part 10 are prevented from being at high positions, finally, workers ascend the bolts on the lug plates 11 are screwed tightly, the installation main body 1 and the tower are installed tightly, when the wire shakes, the wire rope 19 pulls the connecting piece 21 and the sliding block 24 to move under the guiding action of the pulley block 27, so that the damper 22 and the spring 23 are matched to damp the wire rope 19, and the vibration amplitude of the wire, the cross arm and the tower pole is reduced.
The main functions realized by the invention are as follows:
1. the spacing between the outer side wires and the inner side wires is adjusted according to the angle of the wire corner, so that the spacing between the wires and the tower rod meet the requirement of electrical spacing;
2. the length of the outer telescopic arm can be flexibly adjusted, and the universality is good;
3. the anti-falling function is achieved, and the safety is high;
4. the split design is adopted, so that the carrying by workers is convenient;
5. can assemble on ground, shorten the operation time of ascending a height, reduce intensity of labour.
The installation mode, the connection mode or the setting mode of the electric power line corner cross arm are common mechanical modes, and the electric power line corner cross arm can be implemented as long as the beneficial effects of the electric power line corner cross arm can be achieved; the tension-resistant component 8, the cross arm 2, the torsion spring 15, the annular slideway 16, the fastening bolt 18, the steel cable 19, the insulated terminal 20, the shock absorber 22, the spring 23, the sliding block 24 and the pulley block 27 of the corner cross arm of the power line are purchased in the market, and can be installed and operated by a person skilled in the art according to the attached instruction without creative labor of the person skilled in the art.
All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (5)
1. The utility model provides a power line corner cross arm, includes installation main part (1), cross arm (2) and extension piece (3), and installation main part (1) is installed on the tower pole, and both sides of installation main part (1) set up cross arm (2), and the tip of one of them cross arm (2) sets up extension piece (3) to both sides; the tension-resistant sleeve is characterized by further comprising a sleeve (4), telescopic rods (5), adjusting rings (6), supporting rods (7) and tension-resistant assemblies (8), wherein the sleeve (4) is arranged at the end part of the other cross arm (2) towards two sides, the two telescopic rods (5) are respectively and telescopically arranged in the end parts of the two sleeves (4), the combined length of the telescopic rods (5) and the sleeves (4) is larger than that of the extension piece (3), the two adjusting rings (6) are rotatably arranged at the lower part of the installation main body (1), the lower ends of the two supporting rods (7) are respectively connected with the two adjusting rings (6), the upper ends of the two supporting rods (7) are respectively connected with the two telescopic rods (5), the tension-resistant assemblies (8) are respectively arranged on the two extension pieces (3) and the two telescopic rods (5), and the tension-resistant assemblies (8) are used for being connected with wires; the mounting main body (1) comprises a left part (9), a right part (10) and a plurality of lug plates (11), wherein the left part (9) is semi-annular, the inner side of the left part (9) is matched with a tower pole, the cross arm (2) is mounted on the outer side wall of the left part (9), the lug plates (11) are arranged on two sides of the left part (9), the right part (10) and the left part (9) are identical in structure and are symmetrically arranged, and the lug plates (11) on the left part (9) and the right part (10) are connected through bolt fastening; the tower crane structure further comprises two diagonal bracing blocks (12), two rotating shafts (13), a plurality of steel teeth (14) and a plurality of torsion springs (15), wherein the upper ends of the two diagonal bracing blocks (12) are respectively rotatably arranged on the inner side walls of the left part (9) and the right part (10) through the two rotating shafts (13), the plurality of steel teeth (14) are respectively arranged on the inner side walls of the lower ends of the two diagonal bracing blocks (12), the two ends of the two rotating shafts (13) are respectively elastically connected with the left part (9) or the right part (10) through the torsion springs (15), and the lower ends of the two diagonal bracing blocks (12) are contacted with a tower rod through the elasticity of the plurality of torsion springs (15); the tension-resistant assembly (8) comprises a steel cable (19) and an insulating terminal (20), one end of the steel cable (19) is connected with the extension piece (3) or the telescopic rod (5), the other end of the steel cable (19) is connected with the insulating terminal (20), and the insulating terminal (20) is connected with a wire; still include connecting piece (21), bumper shock absorber (22), spring (23) and slider (24), the middle part and extension piece (3) or telescopic link (5) swing joint of cable wire (19), the inner and the connecting piece (21) of cable wire (19) are connected, connecting piece (21) are installed on slider (24), slider (24) slidable mounting is on cross arm (2), the one end and the cross arm (2) fixed connection of two bumper shock absorbers (22), the other end and slider (24) of bumper shock absorber (22) are connected, the both ends of spring (23) elastic connection bumper shock absorber (22).
2. The electric power line corner cross arm according to claim 1, wherein the adjusting ring (6) comprises two hoops (25) and two connecting plates (26), the two hoops (25) are oppositely arranged to form a ring, the two hoops (25) of the ring are rotatably sleeved at the lower part of the combination of the left part (9) and the right part (10), the butt joint ends of the two hoops (25) are connected with the bolts through the two connecting plates (26), and a mounting plate connected with the supporting rod (7) is arranged on the outer wall of one hoop (25).
3. The electric power line corner cross arm according to claim 2, further comprising an annular slideway (16), wherein the annular slideway (16) is arranged on the outer walls of the lower parts of the left part (9) and the right part (10), and the two annular hoops (25) are rotatably sleeved in the annular slideway (16).
4. A power line corner cross arm as claimed in claim 3, further comprising a plurality of threaded holes (17) and a plurality of fastening bolts (18), wherein the plurality of threaded holes (17) are uniformly formed in the annular slide way (16) facing the sleeve (4) and the telescopic rod (5), the plurality of fastening bolts (18) are inserted into both sides of the hoop (25), and the plurality of fastening bolts (18) are fastened in the plurality of threaded holes (17) in a threaded manner.
5. A power line corner cross arm according to claim 1, further comprising a plurality of pulley blocks (27), the plurality of pulley blocks (27) being mounted on the extension member (3) and the telescopic rod (5), respectively, the pulley blocks (27) being formed of at least two adjacent pulleys, the middle portion of the wire rope (19) passing through the guide grooves of the adjacent pulleys.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311615548.2A CN117306937B (en) | 2023-11-30 | 2023-11-30 | Corner cross arm of power line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311615548.2A CN117306937B (en) | 2023-11-30 | 2023-11-30 | Corner cross arm of power line |
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| CN117306937A CN117306937A (en) | 2023-12-29 |
| CN117306937B true CN117306937B (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311615548.2A Active CN117306937B (en) | 2023-11-30 | 2023-11-30 | Corner cross arm of power line |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118117519B (en) * | 2024-03-18 | 2024-07-26 | 江苏银河钢杆有限公司 | Tension-resistant transmission tower |
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| CN219061122U (en) * | 2022-12-23 | 2023-05-23 | 国网安徽省电力有限公司经济技术研究院 | Rotatable and telescopic steel tube pole cross arm |
| CN116365448A (en) * | 2023-04-07 | 2023-06-30 | 长治廉人科技有限公司 | Cross arm of power line |
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2023
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205039459U (en) * | 2015-11-03 | 2016-02-17 | 国家电网公司 | Change cross arm and insulator chain's device with electricity |
| CN106088786A (en) * | 2016-07-26 | 2016-11-09 | 江苏神马电力股份有限公司 | Cross arm and corner tower |
| KR101881941B1 (en) * | 2017-10-11 | 2018-07-26 | 노영철 | Supporting bar for adjusting tension of distribution line |
| CN111600269A (en) * | 2020-06-04 | 2020-08-28 | 赵青山 | High-altitude erection line electric power cross arm |
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| Publication number | Publication date |
|---|---|
| CN117306937A (en) | 2023-12-29 |
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