CN117266659B - Cross arm of power supply line - Google Patents
Cross arm of power supply line Download PDFInfo
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- CN117266659B CN117266659B CN202311548669.XA CN202311548669A CN117266659B CN 117266659 B CN117266659 B CN 117266659B CN 202311548669 A CN202311548669 A CN 202311548669A CN 117266659 B CN117266659 B CN 117266659B
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- 238000013016 damping Methods 0.000 claims abstract description 38
- 238000009434 installation Methods 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 238000005452 bending Methods 0.000 claims description 26
- 210000001624 hip Anatomy 0.000 claims description 3
- 125000003003 spiro group Chemical group 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 230000009471 action Effects 0.000 description 10
- 230000003139 buffering effect Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 210000001503 joint Anatomy 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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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- Engineering & Computer Science (AREA)
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electric Cable Installation (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention relates to the technical field of wire cross arms, in particular to a power supply line cross arm which comprises an installation part, four cross arm arms, a plurality of insulating parts, two pressing arms, two first steel ropes, two damping springs and a plurality of vertical clamps, wherein the inner ends of the four cross arm arms are respectively and symmetrically hinged to the left side and the right side of the installation part, the outer ends of the four cross arm arms are respectively and rotatably provided with the insulating parts, the vertical clamps are respectively and rotatably connected to the left side and the right side of the installation part, the inner ends of the two pressing arms are respectively hinged to the left side and the right side of the installation part, the two ends of the first steel ropes are respectively connected with the outer ends of the four cross arm arms, the outer ends of the two pressing arms are respectively connected with the middle parts of the first steel ropes, one ends of the two damping springs are respectively and rotatably connected with the left side and the right side of the installation part, and the other ends of the two damping springs are respectively and rotatably connected with the two pressing arms; the opening angle of the double cross arms is changed along with the tension of the electric wire cable, so that a buffer effect is achieved, and the reliability of the medium-low voltage power network is improved.
Description
Technical Field
The invention relates to the technical field of wire cross arms, in particular to a power supply line cross arm.
Background
The low-voltage overhead lines in the existing power network all adopt cross arms as supporting hardware fittings, are necessary infrastructure in the medium-low voltage overhead lines, relate to the running health level and the safety performance of the medium-low voltage network, and play a vital role in the medium-low voltage overhead lines. The power supply line cross arm is generally divided into a double cross arm or a single cross arm as a supporting hardware fitting, the single cross arm is generally adopted for a low-voltage network, and the double cross arm is used for a medium-voltage network. For example, the chinese patent application of application number CN202310669329.6 proposes a general type double cross arm of portable, this double cross arm can be according to the roughness of wire pole through adjusting part, adjust the position of arc staple bolt one and arc staple bolt two, thereby make the concatenation of two fixed cross arms, handle the effectual firm centre gripping of wire pole, simultaneously through the effect of butt joint unit, directly insert the both ends of fixed cross arm with the concatenation cross arm, and play preliminary spacing effect between two pairs of concatenation cross arms and the fixed cross arm, more make things convenient for the staff to single to double cross arm frame installation, can also effectually avoid the concatenation cross arm to appear dropping in the installation.
It can be seen from the above-mentioned prior art double cross arm that the double cross arm is generally fixedly mounted on a telegraph pole, the angle between the two cross arms is fixed, when the cable is contracted and rocked, the pulling force of the cable acts on the cross arm, and the bending deformation of the cross arm is easily caused due to the lack of buffering of the angle fixing of the cross arm, and the cable is also easily damaged due to excessive tension impact.
Disclosure of Invention
In order to solve the technical problems, the invention provides the power supply line cross arm, which has the advantages that the opening angle of the double cross arms is changed along with the tension of the electric wire cable, the buffering effect is realized, and the reliability of the medium-voltage power supply network is improved.
The invention relates to a power supply line cross arm, which comprises an installation part, a power supply line cross arm and a power supply line cross arm, wherein the installation part is used for hooping with a telegraph pole; the device comprises a mounting part, a plurality of cross arm arms, a plurality of insulating parts, two pressing arms, two first steel ropes, two damping springs and a plurality of vertical clamps, wherein the inner ends of the four cross arm arms are respectively and symmetrically hinged to the left side and the right side of the mounting part; during operation, the installation department is installed on the wire pole, a plurality of electric wires are arranged respectively in the left and right sides of installation department and are connected with a plurality of perpendicular clamp respectively, the part that same electric wire is located between two perpendicular clamp sets up certain crooked allowance, a plurality of insulating parts make electric wire and cross arm keep sufficient insulating properties between, the pulling force of a plurality of electric wires is respectively with two cross arm outer ends that are located the installation department front side pulling forward, simultaneously with two cross arm outer ends that are located the installation department rear side pulling backward, the outer end of two cross arm that open is tight with cable one thereby push away the outer end of dynamic pressure arm and go up and down, make damping spring compressed, make the damping spring that is located the installation department left side and right side, the pressure arm, cable one and two cross arm keep dynamic balance, when electric wire contracts and rocks, its pulling force that acts on the cross arm changes, damping spring passive makes corresponding compression or extension, thereby make two cross arm outer ends that are located one side open angle change, thereby the outer end of two cross arm is tight with cable one is tight to push away from the outer end of dynamic tension spring, thereby the cable is broken down, the cable is broken down greatly, the tension force is reduced, the tension stress is reduced, and the network is deformed greatly is reduced.
Preferably, the device further comprises two first pulleys, the first pulleys are respectively and rotatably arranged on the two pressing arms, and the middle parts of the two first steel ropes respectively bypass the first pulleys; through the guiding action of the two pulleys on the two steel ropes, the direction of the acting force on the pressing arms is basically consistent with the rotation direction of the pressing arms under the condition of unbalanced stress of the two cross arm arms on the two sides of the steel rope, and the distortion and the deformation of the pressing arms are reduced.
Preferably, the device also comprises four first screw rods and four damping blocks, wherein the first screw rods are respectively and rotationally screwed on the four cross arm arms, the first screw rods are horizontally and symmetrically arranged, and the damping blocks are arranged at the inner ends of the first screw rods; the relative installation positions of the four screw rods and the four cross arm arms are adjusted in a rotating mode, the distance between the two opposite damping blocks is adjusted, the distance between the two cross arm arms is limited, the collision caused by too close distance between the two cross arm arms is avoided, and the safety is improved.
Preferably, the four cross arm arms are provided with inclined reinforcing beams; through setting up stiffening beam, make the cross arm wholly be triangle-shaped, improve the structural strength of cross arm.
Preferably, the vertical line clamp comprises an ear plate, a mounting frame, two upper clamping pieces and two lower clamping pieces, wherein the ear plate is movably connected with the insulating part, the mounting frame is arranged at the lower end of the ear plate, the two upper clamping pieces and the two lower clamping pieces are mounted on the mounting frame, and the two upper clamping pieces are respectively positioned above the two lower clamping pieces; the electric wire cable passes between two upper clamping pieces and two lower clamping pieces to it is tight fixed to press from both sides by two upper clamping pieces and two lower clamping pieces, otic placode movable mounting makes mounting bracket and otic placode have certain degree of freedom on insulating part, and when the electric wire cable rocked, mounting bracket and otic placode can follow-up in step, reduce the cable and buckle the damage in the junction of upper clamping piece and lower clamping piece.
Preferably, the device further comprises a plurality of sliding blocks, a plurality of screw hole seats and a plurality of screw rods II, wherein two symmetrical vertical sliding grooves are formed in the two side walls of the mounting frame, the sliding blocks are respectively and slidably arranged in the sliding grooves, the two ends of the rotating shaft of the plurality of upper clamping pieces are respectively connected with the sliding blocks, the screw hole seats are respectively arranged on the two side walls of the mounting frame, the screw rods II are respectively and rotatably connected with the screw hole seats in a threaded manner, and the lower ends of the screw rods II are respectively and rotatably connected with the sliding blocks; the second screw rod is rotated, the second screw rod and the screw hole seat are in threaded fit, so that the second screw rod drives the sliding block to lift along the sliding groove of the mounting frame, the distance between the upper clamping piece and the lower clamping piece is changed, the upper clamping piece and the lower clamping piece can clamp electric cables with different diameters, and universality is improved.
Preferably, the two lower clamping pieces on the same mounting frame are positioned at the lower inner sides of the two upper clamping pieces, and the two lower clamping pieces and the two upper clamping pieces are respectively positioned at four corners of an inverted isosceles trapezoid; through above-mentioned arrangement for two upper clamping pieces and two lower clamping pieces are the arc when centre gripping cable, and the part of cable by the centre gripping is the arc, the arc is close with the arc of the sagging of cable, thereby reduces the cable by the bending degree of the outer end of clamping part, reduces the damage of buckling.
Preferably, the cable press further comprises two lifting frames, two guide pins, a plurality of pulleys II and two balancing weights, wherein the upper parts of the two lifting frames are respectively provided with a vertical sliding groove II, the two guide pins are respectively arranged on the outer side walls of the two press arms, the two lifting frames are respectively connected with the two guide pins in a lifting sliding way through the sliding grooves II, the pulleys II are respectively arranged at the lower ends of the two lifting frames, the pulleys II respectively tension bending allowance of a plurality of cables downwards, and the two balancing weights are respectively rotatably arranged on the two lifting frames; the counter weight effect of balancing weight makes the crane have the trend of following the guide pin downwardly moving, and the crane is located the bending allowance tensioning of electric wire cable between two cross arm through pulley two, when making the angle of two cross arm change, above-mentioned bending allowance keeps steady state.
Preferably, the device further comprises a plurality of gear rings, a plurality of second sliding blocks, a plurality of trapezoidal racks, a plurality of sliding rods, a plurality of guide blocks and a plurality of springs, wherein the upper clamping piece and the lower clamping piece are rollers with V-shaped wheel surfaces, the gear rings are arranged concentrically, the middle parts of the plurality of mounting frames are respectively provided with a vertical third sliding groove, the second sliding blocks are respectively and slidably arranged in the third sliding grooves, the second sliding blocks are respectively provided with the trapezoidal racks which are inverted isosceles trapezoids, two waists of the trapezoidal racks are provided with driving teeth, the driving teeth are matched with the gear rings, the upper ends of the trapezoidal racks are respectively provided with the sliding rods, the sliding rods are respectively connected with the guide blocks in a sliding guide way, the guide blocks are respectively arranged on the mounting frames, the upper ends of the springs are respectively connected with the guide blocks, the lower ends of the springs are respectively connected with the second sliding blocks, a driving assembly is arranged between the two sliding rods which are oppositely arranged at the front side and the rear side of the mounting part, and the driving assembly drives the two sliding blocks to slide along the two third sliding grooves; when the tension of the electric cable is in the bearable range of the damping spring, the second slider is positioned at the lower end of the third chute under the action of the elastic force of the spring, and the plurality of driving teeth on two sides of the trapezoid rack are meshed with the gear rings of the two upper clamping pieces and the two lower clamping pieces, so that the two upper clamping pieces and the two lower clamping pieces are kept fixed and not rotated; when the tension of the electric wire cable is increased to enable the angle of the two cross arm arms to be larger by a limit, the driving assembly lifts the sliding rod upwards along the guide block, so that the sliding block II is driven to lift along the sliding groove III of the mounting frame, driving teeth on two sides of the trapezoid rack are disengaged from gear rings of the two upper clamping pieces and the two lower clamping pieces, the two upper clamping pieces and the two lower clamping pieces can rotate, at the moment, the bending allowance of the electric wire cable lifts the lifting frame upwards through the pulley II, the electric wire cable is further released outwards, and buffering is further carried out; when the tension of the electric wire cable is reduced to enable the angle of the two cross arm arms to be contracted to the limit, the driving assembly lifts the sliding rod upwards along the guide block, so that the sliding block II is driven to lift along the sliding groove III of the mounting frame, driving teeth on two sides of the trapezoid rack are disengaged from gear rings of the two upper clamping pieces and the two lower clamping pieces, the two upper clamping pieces and the two lower clamping pieces can rotate, at the moment, the gravity of the balancing weight pulls the lifting frame downwards and downwards increases the bending allowance of the electric wire cable through the sliding block II, and the bending allowance of the electric wire cable is further tensioned downwards, so that the electric wire cable is ready for the next buffering; further cushioning and tensioning is achieved, further increasing reliability.
Preferably, the driving assembly comprises a second guy rope, two third pulleys and a third guy rope, wherein the two ends of the second guy rope are respectively connected with the upper ends of two sliding rods which are arranged on the front side and the rear side of the mounting part in an opposite mode, the two third pulleys are respectively arranged on two lug plates, the two pulleys guide the two ends of the second guy rope, so that the second guy rope stretches over the two cross arm arms, the upper end of the third guy rope is connected with the middle part of the second guy rope, the lower end of the third guy rope is connected with the pressing arm, and the third guy rope is in a loose state when the second guy rope is stretched; when the angle of the two cross arm arms is expanded to the limit, the second inhaul cable is tightened, and the two ends of the second inhaul cable pull the two sliding rods upwards along the two guide blocks under the guiding action of the two pulleys III, so that the two sliding blocks II are pulled upwards along the two sliding grooves three-way, and the trapezoidal rack is disengaged from the plurality of gear rings of the two upper clamping pieces and the two lower clamping pieces; when the angle of the two cross arm arms is reduced to the limit, the second stay rope is loosened, the outer end of the pressing arm is moved downwards by the elastic force of the damping spring, the pressing arm pulls the third stay rope downwards, the third stay rope pulls the third stay rope downwards, and then the two ends of the second stay rope pull the two sliding rods upwards along the two guide blocks under the guiding action of the two pulleys, so that the two sliding blocks are pulled upwards along the two sliding grooves, and the trapezoidal rack is disengaged from the two upper clamping pieces and the plurality of gear rings of the two lower clamping pieces; realize automatic drive effect, simple structure, the practicality is good.
Compared with the prior art, the invention has the beneficial effects that: during operation, the installation department is installed on the wire pole, a plurality of electric wires are arranged respectively in the left and right sides of installation department and are connected with a plurality of perpendicular clamp respectively, the part that same electric wire is located between two perpendicular clamp sets up certain crooked allowance, a plurality of insulating parts make electric wire and cross arm keep sufficient insulating properties between, the pulling force of a plurality of electric wires is respectively with two cross arm outer ends that are located the installation department front side pulling forward, simultaneously with two cross arm outer ends that are located the installation department rear side pulling backward, the outer end of two cross arm that open is tight with cable one thereby push away the outer end of dynamic pressure arm and go up and down, make damping spring compressed, make the damping spring that is located the installation department left side and right side, the pressure arm, cable one and two cross arm keep dynamic balance, when electric wire contracts and rocks, its pulling force that acts on the cross arm changes, damping spring passive makes corresponding compression or extension, thereby make two cross arm outer ends that are located one side open angle change, thereby the outer end of two cross arm is tight with cable one is tight to push away from the outer end of dynamic tension spring, thereby the cable is broken down, the cable is broken down greatly, the tension force is reduced, the tension stress is reduced, and the network is deformed greatly is reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an isometric view of the present invention in an installed state;
FIG. 3 is a schematic view of the front view of the present invention in its installed state;
FIG. 4 is a schematic top view of the present invention in an installed state;
FIG. 5 is a schematic side elevational view of the present invention in its installed configuration;
FIG. 6 is a schematic view of the mounting of the present invention in a bottom axial view;
FIG. 7 is a schematic structural view of the structure of the pressing arm, the damping spring, the pulley I, the lifting frame, the guide pin, the pulley II, the balancing weight and the like;
FIG. 8 is an enlarged schematic view of the structure of the insulating member and the vertical line clip;
fig. 9 is an exploded view of the structure of the insulating member and the vertical clip.
The reference numerals in the drawings: 1. a mounting part; 2. a cross arm; 3. an insulating member; 4. pressing an arm; 5. a first steel cable; 6. a damping spring; 7. a pulley I; 8. a first screw; 9. a damper block; 10. ear plates; 11. a mounting frame; 12. an upper clamping member; 13. a lower clamping member; 14. a slide block; 15. a screw hole seat; 16. a second screw; 17. a gear ring; 18. a second slide block; 19. a trapezoidal rack; 20. a slide bar; 21. a guide block; 22. a spring; 23. a lifting frame; 24. a guide pin; 25. a second pulley; 26. a second guy cable; 27. a third pulley; 28. a third guy cable; 29. and (5) balancing weights.
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 to 6, a power supply line cross arm comprises a mounting part 1, wherein the mounting part 1 is used for hooping with a telegraph pole; the four-arm-type hydraulic lifting device comprises a mounting part 1, four cross arm arms 2, a plurality of insulating parts 3, two pressing arms 4, two steel ropes one 5, two damping springs 6 and a plurality of vertical clamps, wherein the inner ends of the four cross arm arms 2 are respectively and symmetrically hinged to the left side and the right side of the mounting part 1, the hinge shafts of the four cross arm arms 2 are vertically arranged, the outer ends of the four cross arm arms 2 are respectively and rotatably provided with the insulating parts 3, the vertical clamps are respectively arranged on the insulating parts 3, the inner ends of the two pressing arms 4 are respectively hinged to the left side and the right side of the mounting part 1, the hinge shafts of the two pressing arms 4 are horizontally arranged, the two ends of the two steel ropes one 5 are respectively connected with the outer ends of the four cross arm arms 2, the two steel ropes one 5 are respectively positioned on the left side and the right side of the mounting part 1, the outer ends of the two pressing arms 4 are respectively connected with the middle parts of the two steel ropes one 5, one ends of the two damping springs 6 are respectively and rotatably connected with the left side and the right side of the mounting part 1, the other ends of the two damping springs 6 are respectively rotatably connected with the two pressing arms 4, and the elasticity of the two damping springs 6 enables the two pressing arms 4 to respectively tension the two steel ropes one 5; the two first pulleys 7 are respectively rotatably arranged on the two pressing arms 4, and the middle parts of the two first steel ropes 5 respectively bypass the two first pulleys 7; the four cross arm arms 2 are respectively and rotationally screwed with the four screw rods 8, the four screw rods 8 are horizontally and symmetrically arranged, and the damping blocks 9 are arranged at the inner ends of the two screw rods 8; the four cross arm arms 2 are provided with inclined reinforcing beams.
In operation, the installation part 1 is installed on a telegraph pole, a plurality of electric wires are respectively arranged at the left side and the right side of the installation part 1 and respectively connected with a plurality of vertical clamps, a certain bending allowance is arranged at the part of the same electric wire between the two vertical clamps, a plurality of insulating parts 3 keep enough insulating performance between the electric wires and the cross arm 2, the tension of the electric wires respectively pulls the outer ends of the two cross arm 2 positioned at the front side of the installation part 1 forwards, simultaneously pulls the outer ends of the two cross arm 2 positioned at the rear side of the installation part 1 backwards, the outer ends of the two opened cross arm 2 tighten the steel rope one 5 so as to push the outer ends of the pressing arm 4 to lift, so that the damping springs 6 are compressed, the damping springs 6 positioned at the left side and the right side of the installation part 1, the pressing arm 4, the steel rope one 5 and the two cross arm 2 keep dynamic balance, when the electric wires shrink and shake, the tension acting on the cross arm 2 is changed, the damping spring 6 passively compresses or extends correspondingly, so that the opening angle of the two cross arms 2 at one side is changed, the distance between the outer ends of the two cross arms 2 is changed, the damping effect is achieved, the bending deformation of the cross arms is reduced, the situation that the tension of an electric wire cable is too great and damaged is also reduced, the reliability of a medium-low voltage power network is improved, the guiding effect of the two pulleys 7 on the two steel ropes 5 is achieved, the directions of the forces of the two cross arms 2 at the two sides of the steel rope 5 on the condition that the stress is unbalanced keep basically consistent with the rotating direction of the pressing arms 4, the distortion of the pressing arms 4 is reduced, the relative installation positions of the four screws 8 and the four cross arms 2 are adjusted in a rotating mode, the distance between the two opposite damping blocks 9 is adjusted, the approaching distance of the two cross arms 2 is limited, avoid two cross arm 2 to collide near-distance, through setting up stiffening beam, make cross arm 2 wholly be triangle-shaped, improve cross arm 2's structural strength.
Example 2
As shown in fig. 8 and 9, on the basis of embodiment 1, the vertical line clip comprises an ear plate 10, a mounting frame 11, two upper clamping pieces 12 and two lower clamping pieces 13, wherein the ear plate 10 is movably connected with the insulating part 3, the mounting frame 11 is arranged at the lower end of the ear plate 10, the two upper clamping pieces 12 and the two lower clamping pieces 13 are mounted on the mounting frame 11, and the two upper clamping pieces 12 are respectively positioned above the two lower clamping pieces 13; the two vertical sliding grooves are symmetrically formed in the two side walls of the mounting frame 11, the sliding blocks 14 are respectively and slidably installed in the sliding grooves, the two ends of the rotating shaft of the upper clamping piece 12 are respectively connected with the sliding blocks 14, the screw hole seats 15 are respectively installed on the two side walls of the mounting frame 11, the screw rods 16 are respectively and rotatably connected to the screw hole seats 15, and the lower ends of the screw rods 16 are respectively and rotatably connected with the sliding blocks 14; two lower clamps 13 on the same mounting frame 11 are located at the lower inner sides of two upper clamps 12, and two lower clamps 13 and two upper clamps 12 are located at four corners of an inverted isosceles trapezoid, respectively.
The electric wire cable passes through the space between the two upper clamping pieces 12 and the two lower clamping pieces 13 and is clamped and fixed by the two upper clamping pieces 12 and the two lower clamping pieces 13, and the lug plate 10 is movably arranged on the insulating part 3, so that the mounting frame 11 and the lug plate 10 have a certain degree of freedom, and when the electric wire cable shakes, the mounting frame 11 and the lug plate 10 can synchronously follow up, and bending damage of the connecting part of the upper clamping pieces 12 and the lower clamping pieces 13 of the electric wire cable is reduced; the screw rod II 16 is rotated, the screw rod II 16 and the screw hole seat 15 are in threaded fit, so that the screw rod II 16 drives the sliding block 14 to lift along the sliding groove of the installation frame 11, the distance between the upper clamping piece 12 and the lower clamping piece 13 is changed, the upper clamping piece 12 and the lower clamping piece 13 can clamp electric wires with different diameters, the two upper clamping pieces 12 and the two lower clamping pieces 13 are arranged in an inverted trapezoid mode, the clamped parts of the electric wires are arc-shaped when the electric wires are clamped by the two upper clamping pieces 12 and the two lower clamping pieces 13, the arc is close to the sagging arc of the electric wires, and therefore bending degree of the outer ends of the clamped parts of the electric wires is reduced, and bending damage is reduced.
Example 3
As shown in fig. 1 to 9, on the basis of embodiment 2, the device further comprises two lifting frames 23, two guide pins 24, a plurality of pulleys two 25 and two balancing weights 29, wherein the upper parts of the two lifting frames 23 are respectively provided with a vertical sliding chute two, the two guide pins 24 are respectively arranged on the outer side walls of the two pressing arms 4, the two lifting frames 23 are respectively connected with the two guide pins 24 in a lifting sliding manner through the sliding chute two, the pulleys two 25 are respectively arranged at the lower ends of the two lifting frames 23, the pulleys two 25 respectively tension the bending allowance of the electric cables downwards, and the two balancing weights 29 are respectively rotatably arranged on the two lifting frames 23; the device also comprises a plurality of gear rings 17, a plurality of second slide blocks 18, a plurality of trapezoid racks 19, a plurality of slide bars 20, a plurality of guide blocks 21 and a plurality of springs 22, wherein the upper clamping piece 12 and the lower clamping piece 13 are rollers with V-shaped wheel surfaces, the gear rings 17 are concentrically arranged on the plurality of upper clamping pieces 12 and the plurality of lower clamping pieces 13, the middle parts of the plurality of mounting frames 11 are respectively provided with a vertical third slide groove, the plurality of second slide blocks 18 are respectively and slidably arranged in the plurality of third slide grooves, the plurality of second slide blocks 18 are respectively provided with trapezoid racks 19, the trapezoid racks 19 are inverted isosceles trapezoids, two waists of the trapezoid racks 19 are provided with driving teeth, the driving teeth are matched with the gear rings 17, sliding rods 20 are arranged at the upper ends of the trapezoid racks 19, the sliding rods 20 are respectively connected with a plurality of guide blocks 21 in a sliding guide manner, the guide blocks 21 are respectively arranged on the mounting frame 11, the upper ends of the springs 22 are respectively connected with the guide blocks 21, the lower ends of the springs 22 are respectively connected with a plurality of second sliding blocks 18, driving components are arranged between the two sliding rods 20 which are oppositely arranged at the front side and the rear side of the mounting part 1, and the driving components drive the two sliding rods 20 to drive the two second sliding blocks 18 to slide along the three sliding grooves; the driving assembly comprises a second guy 26, two three pulleys 27 and a third guy 28, wherein two ends of the second guy 26 are respectively connected with the upper ends of two sliding rods 20 which are arranged on the front side and the rear side of the installation part 1 in an opposite mode, the two three pulleys 27 are respectively arranged on the two ear plates 10, the two pulleys 27 guide two ends of the second guy 26, the second guy 26 spans over the two cross arm 2, the upper end of the third guy 28 is connected with the middle of the second guy 26, the lower end of the third guy 28 is connected with the pressing arm 4, and the third guy 28 is in a loose state when the second guy 26 is stretched tightly.
The counterweight action of the counterweight 29 makes the lifting frame 23 have a downward moving trend along the guide pin 24, the lifting frame 23 tightens the bending allowance of the electric wire cable between the two cross arm arms 2 through the pulley II 25, so that the bending allowance keeps a stable state when the angle of the two cross arm arms 2 is changed, when the tension of the electric wire cable is in the bearable range of the damping spring 6, the slider II 18 is positioned at the lower end of the chute III under the action of the elastic force of the spring 22, and the plurality of driving teeth at the two sides of the trapezoidal rack 19 are meshed with the gear rings 17 of the two upper clamping pieces 12 and the two lower clamping pieces 13 so as to keep the two upper clamping pieces 12 and the two lower clamping pieces 13 fixed and not rotated; when the tension of the electric wire cable is increased to make the angle of the two cross arm arms 2 be larger to the limit, the second guy cable 26 is tightened, two ends of the second guy cable 26 pull the two sliding rods 20 upwards along the two guide blocks 21 under the guiding action of the two pulleys III 27, so that the two sliding blocks II 18 are pulled upwards along the two sliding grooves three-dimensionally, driving teeth on two sides of the trapezoid rack 19 are disengaged from the gear rings 17 of the two upper clamping pieces 12 and the two lower clamping pieces 13, the two upper clamping pieces 12 and the two lower clamping pieces 13 can rotate, at the moment, the bending allowance of the electric wire cable lifts the lifting frame 23 upwards through the pulleys II 25, and the electric wire cable is further released outwards, so that buffering is further carried out; when the tension of the electric wire cable is reduced to enable the angle of the two cross arm arms 2 to be contracted to the limit, the second stay rope 26 is loosened, the outer end of the pressing arm 4 is moved downwards by the elastic force of the damping spring 6, the third stay rope 28 is pulled downwards by the pressing arm 4, the second stay rope 26 is pulled downwards by the third stay rope 28, the two slide bars 20 are pulled upwards along the two guide blocks 21 under the guiding action of the two pulleys three 27 by the two ends of the second stay rope 26, the two slide blocks 18 are pulled upwards along the two sliding grooves three-way, driving teeth on two sides of the trapezoid rack 19 are disengaged from the gear rings 17 of the two upper clamping pieces 12 and the two lower clamping pieces 13, the two upper clamping pieces 12 and the two lower clamping pieces 13 can rotate, at the moment, the gravity of the balancing weights 29 pulls the lifting frame 23 downwards, the bending allowance of the electric wire cable is increased downwards through the pulleys two pulleys three 27, the bending allowance of the electric wire cable is further tensioned downwards, and the next buffering is ready.
As shown in fig. 1 to 9, a power supply line crossarm of the present invention is constructed such that, in operation, first, a mounting part 1 is mounted on a utility pole, a plurality of electric wires are respectively arranged at both left and right sides of the mounting part 1 and respectively clamped between a plurality of upper clamps 12 and a plurality of lower clamps 13, a portion of the same electric wire between two vertical clamps is provided with a bending allowance, the bending allowance bypasses a pulley two 25, a plurality of insulating members 3 maintain sufficient insulating properties between the electric wires and the crossarm 2, then, the pulling force of the plurality of electric wires pulls the outer ends of the two crossarm 2 at the front side of the mounting part 1 forward, simultaneously pulls the outer ends of the two crossarm 2 at the rear side of the mounting part 1 backward, the outer ends of the two opened crossarm 2 tighten a wire rope one 5 to push the outer ends of the dynamic arm 4 up and down, so that a damper spring 6 is compressed, so that the damping springs 6, the pressing arms 4, the first steel cable 5 and the two cross arms 2 which are positioned at the left side and the right side of the installation part 1 keep dynamic balance, then when the electric wire cable is contracted and swayed, the pulling force acting on the cross arms 2 is changed, the damping springs 6 are correspondingly compressed or stretched passively, the opening angle of the two cross arms 2 positioned at one side is changed, the distance between the outer ends of the two cross arms 2 is changed, thereby playing a role of buffering, finally when the opening angle of the two cross arms 2 is limited, the second guy cable 26 is tightened, the two sliding rods 20 are pulled upwards along the two guide blocks 21 under the guiding action of the two pulleys three 27, so that the two sliding blocks two 18 are pulled upwards along the two sliding grooves, the driving teeth at the two sides of the trapezoid rack 19 are disengaged from the gear rings 17 of the two upper clamping pieces 12 and the two lower clamping pieces 13, the two upper clamping pieces 12 and the two lower clamping pieces 13 can rotate, at the moment, the bending allowance of the electric wire is lifted upwards through the pulley II 25, the electric wire is further released outwards, and is further buffered, when the angle of the two cross arm 2 is reduced to the limit, the guy II 26 is relaxed, the outer end of the pressing arm 4 is moved downwards by the elasticity of the damping spring 6, the guy III 28 is pulled downwards by the pressing arm 4, the guy III 28 is pulled downwards by the guy II 26, the two sliding rods 20 are pulled upwards along the two guide blocks 21 under the guiding action of the two pulleys III 27, the two sliding blocks II 18 are pulled upwards along the two sliding grooves, the driving teeth on the two sides of the trapezoidal rack 19 are disengaged with the gear rings 17 of the two upper clamping pieces 12 and the two lower clamping pieces 13, the guy II 12 and the two lower clamping pieces 13 can rotate, at the moment, the guy II 28 is pulled downwards by the guy II 28, the bending allowance of the electric wire is increased downwards through the pulley II 25, and the bending allowance of the electric wire is further tensioned downwards, and the electric wire is further buffered downwards.
The main functions realized by the invention are as follows:
1. the opening angle of the double cross arms is changed along with the tension of the electric wire cable, so that a buffer effect is achieved, and the reliability of the medium-low voltage power network is improved;
2. the strength for clamping the cable can be adjusted;
3. the cable with different diameters can be clamped;
4. the buffer stroke can be further increased, and the reliability is improved;
5. the clamping part of the vertical wire clamp and the electric wire cable can be changed, and the aggravation of bending damage caused by the fixed clamping part is avoided.
The mounting mode, the connecting mode or the setting mode of the power supply line cross arm are common mechanical modes, and the power supply line cross arm can be implemented as long as the beneficial effects of the power supply line cross arm can be achieved; the installation part 1, the insulating part 3, the first steel cable 5, the damping spring 6, the first pulley 7, the first screw rod 8, the damping block 9, the upper clamping piece 12, the lower clamping piece 13, the sliding block 14, the second screw rod 16, the gear ring 17, the trapezoid rack 19, the sliding rod 20, the spring 22, the guide block 21, the second pulley 25, the balancing weight 29, the second guy cable 26, the third pulley 27 and the third guy cable 28 of the cross arm of the power supply line are purchased in the market, and a person skilled in the art only needs to install and operate according to the attached using specification without creative labor.
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 power supply line cross arm comprises an installation part (1), wherein the installation part (1) is used for hooping with a telegraph pole; the device is characterized by further comprising four cross arm arms (2), a plurality of insulating parts (3), two pressing arms (4), two first steel ropes (5), two damping springs (6) and a plurality of vertical clamps, wherein the inner ends of the four cross arm arms (2) are respectively and symmetrically hinged to the left side and the right side of the installation part (1), the hinged shafts of the four cross arm arms (2) are vertically arranged, the outer ends of the four cross arm arms (2) are respectively and rotatably provided with the insulating parts (3), the vertical clamps are respectively and rotatably provided with the insulating parts (3), the inner ends of the two pressing arms (4) are respectively hinged to the left side and the right side of the installation part (1), the hinged shafts of the two pressing arms (4) are horizontally arranged, the two ends of the two first steel ropes (5) are respectively connected with the outer ends of the four cross arm arms (2), the two first steel ropes (5) are respectively positioned at the left side and the right side of the installation part (1), the outer ends of the two pressing arms (4) are respectively connected with the middle parts of the two first steel ropes (5), one end of the two damping springs (6) are respectively connected with the left side and the two pressing arms (6) are respectively rotatably connected with the two damping springs (4) respectively; the device also comprises two pulley I (7), wherein the two pulley I (7) are respectively and rotatably arranged on the two pressing arms (4), and the middle parts of the two steel ropes I (5) respectively bypass the two pulley I (7); the four first screw rods (8) are respectively and rotationally screwed on the four cross arm arms (2), the four first screw rods (8) are horizontally and symmetrically arranged, and the damping blocks (9) are arranged at the inner ends of the two first screw rods (8); the vertical line clamp comprises an ear plate (10), a mounting frame (11), two upper clamping pieces (12) and two lower clamping pieces (13), wherein the ear plate (10) is movably connected with the insulating part (3), the mounting frame (11) is arranged at the lower end of the ear plate (10), the two upper clamping pieces (12) and the two lower clamping pieces (13) are mounted on the mounting frame (11), and the two upper clamping pieces (12) are respectively positioned above the two lower clamping pieces (13); still include a plurality of sliders (14), a plurality of screw seat (15) and a plurality of screw rod two (16), all set up two vertical spouts of symmetry on the both sides wall of mounting bracket (11), a plurality of sliders (14) are slidable mounting respectively in the spout, the pivot both ends of a plurality of upper holding pieces (12) are connected with a plurality of sliders (14) respectively, a plurality of screw seat (15) are installed respectively on the both sides wall of a plurality of mounting bracket (11), a plurality of screw rod two (16) rotate the spiro union respectively on a plurality of screw seat (15), the lower extreme of a plurality of screw rod two (16) rotate with a plurality of sliders (14) respectively and are connected.
2. A power line crossarm according to claim 1, characterized in that four crossarm arms (2) are each provided with inclined stiffening beams.
3. The crossarm of a power supply line according to claim 1, further comprising two lifting frames (23), two guide pins (24), a plurality of second pulleys (25) and two balancing weights (29), wherein the upper parts of the two lifting frames (23) are respectively provided with a vertical second sliding chute, the two guide pins (24) are respectively arranged on the outer side walls of the two pressing arms (4), the two lifting frames (23) are respectively connected with the two guide pins (24) in a lifting sliding manner through the second sliding chute, the plurality of second pulleys (25) are respectively arranged at the lower ends of the two lifting frames (23), the plurality of second pulleys (25) are respectively used for downwards tensioning bending allowance of a plurality of electric cables, and the two balancing weights (29) are respectively rotatably arranged on the two lifting frames (23).
4. The crossarm of a power supply line according to claim 1, further comprising a plurality of gear rings (17), a plurality of second sliding blocks (18), a plurality of ladder racks (19), a plurality of slide bars (20), a plurality of guide blocks (21) and a plurality of springs (22), wherein the upper clamping piece (12) and the lower clamping piece (13) are rollers with V-shaped wheel surfaces, the plurality of upper clamping pieces (12) and the plurality of lower clamping pieces (13) are concentrically provided with the gear rings (17), the middle parts of the plurality of mounting frames (11) are respectively provided with a vertical third sliding groove, the second sliding blocks (18) are respectively and slidably mounted in the third sliding grooves, the second sliding blocks (18) are respectively provided with a ladder rack (19), the ladder racks (19) are in an inverted isosceles trapezoid shape, two waists of the ladder racks (19) are provided with driving teeth, the driving teeth are matched with the gear rings (17), the upper ends of the ladder racks (19) are respectively and slidably connected with the plurality of the guide blocks (21), the plurality of the guide blocks (21) are respectively, the sliding blocks (21) are respectively mounted on the upper ends of the plurality of the guide blocks (21), the sliding blocks (22) are respectively connected with the two sliding bars (1) respectively, the two sliding bars (1) are respectively, and the two sliding bars are respectively connected with the two sliding bars (1), the driving assembly drives the two sliding rods (20) to drive the two sliding blocks II (18) to slide along the two sliding grooves III; two lower clamping pieces (13) on the same mounting frame (11) are positioned on the lower inner sides of two upper clamping pieces (12), and the two lower clamping pieces (13) and the two upper clamping pieces (12) are respectively positioned at four corners of an inverted isosceles trapezoid.
5. The crossarm of claim 4, wherein the driving assembly comprises a second guy cable (26), two three pulleys (27) and a third guy cable (28), two ends of the second guy cable (26) are respectively connected with upper ends of two sliding rods (20) which are oppositely arranged at the front side and the rear side of the mounting part (1), the two three pulleys (27) are respectively arranged on the two ear plates (10), the two three pulleys (27) guide two ends of the second guy cable (26) to enable the second guy cable (26) to span over the two crossarm arms (2), the upper ends of the third guy cable (28) are connected with the middle part of the second guy cable (26), the lower ends of the third guy cable (28) are connected with the pressing arm (4), and the third guy cable (28) is in a loose state when the second guy cable (26) is stretched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202311548669.XA CN117266659B (en) | 2023-11-21 | 2023-11-21 | Cross arm of power supply line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311548669.XA CN117266659B (en) | 2023-11-21 | 2023-11-21 | Cross arm of power supply line |
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| CN117266659B true CN117266659B (en) | 2024-01-23 |
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| CN205046909U (en) * | 2015-09-09 | 2016-02-24 | 江苏神马电力股份有限公司 | Compound cross arm and contain transmission tower of this complex cross arm |
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| CN117266659A (en) | 2023-12-22 |
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