CN105421868A - Low-voltage glass fiber reinforced plastic overhead circuit cross arm - Google Patents
Low-voltage glass fiber reinforced plastic overhead circuit cross arm Download PDFInfo
- Publication number
- CN105421868A CN105421868A CN201510721013.2A CN201510721013A CN105421868A CN 105421868 A CN105421868 A CN 105421868A CN 201510721013 A CN201510721013 A CN 201510721013A CN 105421868 A CN105421868 A CN 105421868A
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- China
- Prior art keywords
- arm
- bearing bar
- low
- cross
- bar
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- 239000011152 fibreglass Substances 0.000 title claims abstract description 14
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 5
- 239000012212 insulator Substances 0.000 abstract description 5
- 238000009826 distribution Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 23
- 229910052742 iron Inorganic materials 0.000 description 12
- 239000000203 mixture Substances 0.000 description 4
- 244000080575 Oxalis tetraphylla Species 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention belongs to a low-voltage power distribution device, and particularly discloses an overhead circuit cross arm. A force bearing rod is made of glass fiber reinforced plastic profiles. The force bearing rod and 2-6 stringing grooves on the force bearing rod form an integrated 2-6-wire insulator. The four-six-wire tension resisting cross arm used as a tension resisting rod is of an adjustable triangular truss structure. The low-voltage glass fiber reinforced plastic overhead circuit cross arm has a series of advantages of resisting corrosion, being low in weight, high in mechanical strength, long in service life, easy to transport and install and good in force bearing and insulation performance and the like.
Description
Technical field
The present invention relates to low-voltage distribution equipment, particularly relate to low-voltage overhead line road cross-arm.
Background technology
At present, conventional on low-voltage circuit cross-arm has wooden cross arm and iron cross arm two kinds.Wooden cross arm is by wooden bearing bar and to play the insulation of insulating effect molecular, and bearing bar dependence bolt, nut and diagonal brace ferropexy are on electric pole.Its major defect is subject to damage by worms and corrode, and application life is shorter, is substantially eliminated in today of wood supply growing tension.Iron cross arm is with the section bar such as angle steel or channel-section steel for bearing bar, and with U-shaped anchor ear and M shape embrace iron composition securing member itself and electric pole are fixed together, on bearing bar, installing insulating is used for installing electric wiring and plays insulating effect again.This iron cross arm has higher load intensity, and application life is also longer, is generally used.But that its most fatal shortcoming is weight is large, transport and install more difficult, and very easily breaks insulator in carrying.The structure of above-mentioned two kinds of cross-arms is all using bearing bar as stressed member, and insulator, as insulating element, assembles between the two.
The ceramic cross-arm of increasingly extensive use in recent years has good insulating properties and chemical stability, phenomenon of not damaging by worms, but its major defect has 2 points: one is expensive, is used on high-tension overhead line so be only limited to.Two is because its structure of ceramic cross-arm limit, and a cross-arm can only set up an electric wire; And the ceramic cross-arm of tension type bearing rod must with metal cross arm with the use of, only as by sliding insulator, metal cross arm both sides can be arranged on, and independently cross-arm can not be become, and because the tensile strength of ceramic materials is lower, be irrational as using by draw piece.
Summary of the invention
The object of the invention is the deficiency overcoming aforementioned three kinds of technology, and a kind of good insulation preformance is provided, lightweight, mechanical strength is high, long service life, be easy to transport and install, load and insulation two kinds of functions especially can be made simultaneously to realize at a global facility, and on a cross-arm, the glass fiber reinforced plastic low-voltage overhead line road cross-arm of 2-6 electric wire can be set up simultaneously.
The object of the invention is to realize according to following design scheme.
The present invention includes the design scheme of orthoscopic and tension type two kinds of cross-arms.
One. orthoscopic low pressure overhead circuit cross arm
The securing member embracing iron and U-shaped anchor ear composition by M shape is fixed on bearing bar on electric pole.Bearing bar adopts glass fiber reinforced plastic to make.Bearing bar and 2-6 the stringing slotware which is provided with are connected as a single entity, the isolator of the 2-6 line of the formula that forms a whole.
Stringing slotware can integral die-cast, also can be made up of some card line washers, and wherein every two panels card line washer forms a shelving wire casing part side by side, and is fixed on bearing bar to become to be integrated with it.Fixing mode can adopt adhering method, also can adopt the method being compressed to one.
Two. tension type low-voltage overhead line road cross-arm.
Bearing bar is fixed on electric pole by the securing member embracing iron and U-shaped anchor ear composition by M shape.Bearing bar adopts glass-reinforced plastic material to make.Bearing bar and 2-6 the stringing slotware which is provided with are connected as a single entity, the isolator of the 2-6 line of the formula that forms a whole.When this cross-arm bears larger tension force, be designed to adjustable triangular trussed construction.
Adjustable triangular truss is made up of the arm-tie of bearing bar, U-shaped anchor ear, adjustable angle, pull bar and drag link sleeve, wherein arm-tie is welded on outside the U-shaped anchor ear top as securing member, arm-tie two ends are welding rod cover respectively, pull bar one end band screw thread, be flexibly connected with drag link sleeve with nut, the other end is connected with bearing bar end.
Pull bar and bearing bar fastening time, the extrusion stress and shearing that pull bar screw causes is born for exempting the screw of glass fiber reinforced plastic bearing bar end, spy respectively inserts a metal drawer formula plug matched with support bar wall in two ends of bearing bar, and bearing bar, drawer type plug and pull bar are fixed together by the mode that is screwed.Between drawer type plug and support bar end, a sticky insulating trip can be added to increase climbing arc distance.
Stringing slotware in the cross-arm of tension type low-voltage overhead line road can be made up of pad wire loop, pad line slip ring and card line shelves ring, wherein pads line slip ring sleeve outside pad wire loop, and between the two for being slidably matched, card line shelves ring is then positioned at pad wire loop both sides.
Above-mentioned two kinds of cross-arms, all can be divided into two wires, four lines, six lines, three kinds of standards, to meet the multiple needs of low-voltage circuit.
Advantage of the present invention can be summarized as follows:
1. glass fiber reinforced plastic bearing bar and stringing slotware group are integrated, can make to realize in a cross-arm while of stressed and insulation function.Eliminate insulator.
2. owing to adopting glass-reinforced plastic material to make, so lightweight, low price, saving steel or timber.
3. be convenient to manufacture, transport, install, greatly can save installation work-hour, and spoilage is extremely low.
4. long service life.
5. electrical insulation capability is good.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of embodiment 1.
Fig. 2 is the assembly drawing of embodiment 1.
Fig. 3 is the assembling schematic diagram of embodiment 2.
Fig. 4 is the assembly drawing of embodiment 2.
Wherein: 1-card line washer, 2-bearing bar, 3-M shape embraces iron, 4-electric pole, 5-U shape anchor ear, 6-elastomeric pad, 7-nut, 8-electric wire, 9-insulating trip, mother falls in 10-, 11-stringing slotware, 12-drag link sleeve, 13-drawer type plug, 14-pull bar, 15-pull bar fixed head, 16-adjusting nut, 17-screw, 18-nut, 19-elastic washer, 20-nut, 21-pad wire loop, 22-card line shelves ring, 23-pad line slip ring, 24-arm-tie, 25-iron cross arm, 26-pottery cross-arm.
Detailed description of the invention
As shown in the figure, embodiment 1 is a kind of form of structure of orthoscopic reinforced glass fibre plastic cross-arm.It has two transversely arranged flat through holes at the middle part of glass fiber reinforced plastic bearing bar 1, it is that two ends have and coordinate consistent rectangular flat with the flat hole Distance geometry size on cross-arm that M shape embraces iron 3, a plane of plate has two bar shaped Ka Jiao laid respectively at inside flat hole, in order to contact with the cylinder of electric pole 4; U-shaped anchor ear 5 has an arc-shaped curved surface curved with bar-shaped plate, respectively there is a pillar-bolt consistent with U-shaped anchor ear 5 opening direction at the both ends of curved surface, M shape is embraced iron 3 in two flat holes that whole orthoscopic cross-arm embraces iron 3 and bearing bar 2 midfield by M shape and bearing bar 2 is through on two bolts of U-shaped anchor ear, fastening and be fixed on and embrace on the electric pole 4 between iron between U-shaped anchor ear and M shape with the nut 7 be screwed on bolt.
Embodiment 2 is a kind of form of structure of tension type reinforced glass fibre plastic cross-arm.For the change of larger wire tension and adaptation pole diameter can be born, be designed to adjustable triangular trussed construction.The structure of its glass fiber reinforced plastic bearing bar 1 is hollow tubular, and middle part abdomen has two oblate through holes of transverse direction, two ends respectively have a through hole.Drawer type plug metal is made, it by with hollow bearing bar cavity shape kissing and the drawer type insert be slidably matched with it and the drawer face that is equal to or greater than cross-arm cross section form, insert and drawer face are connected as a single entity.Its insert has 1 through hole corresponding with the perforate of cross-arm termination, bearing bar 2 is connected with adhesive with the drawer type plug 13 inserting its end, to increase the mechanical strength of bearing bar and to disperse the stress suffered by rod member port and through-hole section; On the arm-tie 24 of U-shaped anchor ear 5, the drag link sleeve 12 of welding is the short metal tube that two internal diameters are a bit larger tham pull bar external diameter, two sleeve pipes 12 divide on the arm-tie 24 that is welded in outside U-shaped anchor ear 5 arc-shaped curved surface symmetrically, the plane of the plane that two casing centerline are formed and U-shaped anchor ear two bolt coincides, pull bar and cross-arm centreline space angle α are advisable (wherein to approximate 2arctg2d/b, d is pole diameter, and b is cross-arm length); Described pull bar 14 is Metallic rod, and there is pin thread its one end, and the other end is welded with a pull bar fixed head, it has 1 circular hole consistent with cross-arm termination through hole; M shape embraces iron and the M shape in orthoscopic cross-arm, and to embrace iron identical.Two bolts of U-shaped anchor ear 5 are each passed through M shape and embrace through hole in iron 3 and bearing bar 2, and with nut 20 by bearing bar and electric pole 4 fastening, add an elastic washer 19 between nut and bearing bar.For strengthening the mechanical strength of tension type cross-arm, cross-arm is designed to an adjustable triangle truss, its composition structure is as follows: first fix one piece in the outside of U-shaped anchor ear 5 and have flexible arm-tie 24, the two ends of arm-tie 24 are welded with drag link sleeve 12 respectively, one end of drag link sleeve 14 is with pin thread and insert in drag link sleeve and fix with adjusting nut 16, and carrys out adjustment of tonicity by adjusting nut.For ensure pull-rod nut not reason shaken and loosened, also can add and fall mother 10.The pull bar other end is the pull bar fixed head 15 of one block of metal, perforate on pull bar fixed head, and screw 17 is each passed through the through hole on bearing bar 2, the drawer type plug 13 of bearing bar and pull bar fixed head 15 and fixes with nut 18.
Pad wire loop 21 in the present embodiment is socketed with not rotary way and is fixed on support bar 2, and padding line slip ring, to be then enclosed within pad wire loop outer and become with it rotatably to coordinate, so that stringing operation during installing wire is carried out smoothly and reduced the wearing and tearing of surfaces of wires.
The cross-arm of above-mentioned two types all can be divided into two wires, four lines, six lines, three kinds of standards, and the cross-arm length ratio of three kinds of standards is about 3.21/7.2/11.2.Correspondingly, stringing slotware also arranges 2-6 as required, and the electrical wire fastener of frame on orthoscopic cross-arm is between two card line washers 1 and fix with reinforcing wire; Tension type cross-arm then can be used as wire terminations, and each group electric wire is erected at respectively from both direction and pads line slip ring 23 and fix with reinforcing wire.
Can be found out by above-described embodiment, present invention can be implemented in the function of an insulating part setting up many wires.And the bearing bar done due to glass fiber reinforced plastic shapes has excellent insulating properties, bearing bar and the stringing slotware on it is made to achieve not only load but also the dual-use function insulated.Through preliminary experiment, proving effect is good.
Claims (6)
1. an orthoscopic low-voltage overhead line road cross-arm, is close to firmware and bearing bar is fixed on electric pole, it is characterized in that: bearing bar glass-reinforced plastic material makes; Bearing bar and the 2-6 on it stringing slotware form a whole the 2-6 line isolator of formula.
2. orthoscopic low-voltage overhead line road according to claim 1 cross-arm, is characterized in that stringing slotware is made up of card line washer, and wherein every two panels card line washer forms a shelving wire casing part side by side and is fixed on bearing bar to become to be integrated with it.
3. a tension type low-voltage overhead line road cross-arm, is close to firmware and bearing bar is fixed on electric pole, it is characterized in that: bearing bar glass material makes; Bearing bar and the 2-6 on it stringing slotware form a whole the 2-6 line isolator of formula; Wherein four lines and six pin crossarm are an adjustable triangular trussed construction.
4. tension type low-voltage overhead line road cross-arm according to claim 3, it is characterized in that adjustable triangular truss be by bearing bar, U-shaped anchor ear, for adjusting the arm-tie of angle, pull bar and drag link sleeve form, wherein arm-tie is welded in outside the U-shaped anchor ear of securing member, arm-tie two ends respectively welding rod cover, pull bar one end nut are flexibly connected with drag link sleeve, and the other end is connected with bearing bar end.
5. the tension type low-voltage overhead line road cross-arm according to claim 3 or 4, it is characterized in that: a metal drawer formula plug matched with support bar wall is respectively inserted in two ends of support bar, and bearing bar, drawer type plug and pull bar are fixed together by the mode that is screwed.
6. the tension type low-voltage overhead line road cross-arm according to claim 3 or 4, it is characterized in that stringing slotware is made up of pad wire loop, pad line slip ring and card line shelves ring, wherein pad line slip ring sleeve outside pad wire loop, between the two for being slidably matched, card line shelves ring is positioned at pad wire loop both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510721013.2A CN105421868A (en) | 2015-10-29 | 2015-10-29 | Low-voltage glass fiber reinforced plastic overhead circuit cross arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510721013.2A CN105421868A (en) | 2015-10-29 | 2015-10-29 | Low-voltage glass fiber reinforced plastic overhead circuit cross arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105421868A true CN105421868A (en) | 2016-03-23 |
Family
ID=55500373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510721013.2A Pending CN105421868A (en) | 2015-10-29 | 2015-10-29 | Low-voltage glass fiber reinforced plastic overhead circuit cross arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105421868A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115045558A (en) * | 2022-07-22 | 2022-09-13 | 国网河南省电力公司汝阳县供电公司 | Interim wire pole of easy construction installation |
-
2015
- 2015-10-29 CN CN201510721013.2A patent/CN105421868A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115045558A (en) * | 2022-07-22 | 2022-09-13 | 国网河南省电力公司汝阳县供电公司 | Interim wire pole of easy construction installation |
| CN115045558B (en) * | 2022-07-22 | 2024-03-12 | 国网河南省电力公司汝阳县供电公司 | Temporary telegraph pole easy to construct and install |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160323 |
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| WD01 | Invention patent application deemed withdrawn after publication |