CN103437586B - Composite rotation cross-arm - Google Patents
Composite rotation cross-arm Download PDFInfo
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- CN103437586B CN103437586B CN201310336901.3A CN201310336901A CN103437586B CN 103437586 B CN103437586 B CN 103437586B CN 201310336901 A CN201310336901 A CN 201310336901A CN 103437586 B CN103437586 B CN 103437586B
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Abstract
The invention discloses a kind of composite rotation cross-arm, comprise the support insulator and composite insulator that are hinged on tower body the same side, described support insulator is vertical with tower body to be arranged, the end of described composite insulator tiltedly points to the end of support insulator, and the end of composite insulator is connected by the hanging wire wire clamp being connected ground wire with support insulator end.Described support insulator is positioned at the below of composite insulator, and the angle between support insulator and composite insulator is 30 ~ 45 °.The hinge member of described support insulator and composite insulator and tower body comprises about two angle steel positioned opposite, jointed shaft is installed on be oppositely arranged two limits of two angle steel, another limit of two angle steel is fixedly connected with tower body separately, jointed shaft installs hinge, and the other end of hinge arranges vertical with the hinge link plate for connecting struts insulator and composite insulator.The present invention have structure simple, be convenient to implement, the advantage of reasonable in design, lightweight, available protecting shaft tower main body.
Description
Technical field
The present invention relates to the cross-arm on a kind of ultra-high-tension power transmission line, specifically a kind of rotation cross-arm of composite material.
Background technology
Current China 110kV above electric power line pole tower overwhelming majority adopts all-steel structure, but the defects such as steel exist that quality is heavy, easy-to-rust or cracking, the problem such as also there is construction transport and operation maintenance is difficult; And shaft tower is power line Louis generation pollution flashover, windage yaw electric discharge etc. fault and the accident of full steel structure.
Along with the development of composite technology and manufacturing process thereof, transmission line of electricity adopts composite material pole tower to become possibility.Composite material has the features such as lightweight, specific strength is large, corrosion-resistant, high-low temperature resistant and insulating properties, and composite material pole tower is used for transmission line of electricity can save a large amount of steel.Utilize the insulating properties of shaft tower, be not only easy to the windage yaw and the pollution flashover accident that solve transmission line of electricity, improve line security operation level, can also tower head size be reduced simultaneously, reduce width of corridor; Shaft tower is light, the feature of easy machine-shaping, can reduce transport and the assembly cost of shaft tower significantly; Corrosion-resistant, the feature that large, the stolen possibility of high-low temperature resistant, intensity is little of shaft tower, can reduce the maintenance cost of circuit; Simultaneously due to shaft tower Color tunable, nonhazardous, enhance the environment friendly of circuit.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of composite rotation cross-arm of lightweight, available protecting shaft tower main body.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
Composite rotation cross-arm, comprise the support insulator and composite insulator that are hinged on tower body the same side, described support insulator is vertical with tower body to be arranged, the end of described composite insulator tiltedly points to the end of support insulator, and the end of composite insulator is connected by the hanging wire wire clamp being connected ground wire with support insulator end.
Further improvement of the present invention is: described support insulator is positioned at the below of composite insulator, and the angle between support insulator and composite insulator is 30 ~ 45 °.
Further improvement of the present invention is: the hinge member of described support insulator and composite insulator and tower body comprises about two angle steel positioned opposite, jointed shaft is installed on be oppositely arranged two limits of two angle steel, another limit of two angle steel is fixedly connected with tower body separately, jointed shaft installs hinge, and the other end of hinge arranges vertical with the hinge link plate for connecting struts insulator and composite insulator.
Further improvement of the present invention is: be connected with stiffening rib between described two angle steel.
Further improvement of the present invention is: described link plate is offered two screwed holes corresponding with the link end of support insulator and composite insulator.
Further improvement of the present invention is: described composite rotation cross-arm is arranged in steel rod tower, support insulator and composite insulator are hinged on the same bus of tower body, the hinge member of support insulator and composite insulator and tower body comprises the annular anchor ear being arranged on and tower body is fastened by bolts, the side that described annular anchor ear is oppositely arranged bolt arranges two mounting ears opposing upper and lower, between two mounting ears, jointed shaft is set, jointed shaft installs hinge, the other end of hinge arranges vertical with the hinge link plate for connecting struts insulator and composite insulator, described link plate is offered two screwed holes corresponding with the link end of support insulator and composite insulator.
Further improvement of the present invention is: the described hinge corresponding with support insulator is the cuboid of side band rotating shaft cylinder, and the hinge corresponding with composite insulator is the rhombogen of side band rotating shaft cylinder.
Further improvement of the present invention is: described composite rotation cross-arm is arranged on four angle towers of steel angle structure, the hinged end of support insulator and composite insulator and four angle towers is distributed on same plumb line, composite insulator is hinged on the center line on four one of them limit of angle tower, the hinged place of the corresponding support insulator of four angle towers arranges the link stretching into four angle tower inside, and support insulator is hinged on link.
Further improvement of the present invention is: described composite rotation cross-arm is arranged in 110kV electric pressure high-tension line, and the length of support insulator is greater than 1 meter.
Further improvement of the present invention is: described composite rotation cross-arm is arranged in 220kV electric pressure high-tension line, and the length of support insulator is greater than 1.9 meters.
Owing to have employed technique scheme, the technological progress that the present invention obtains is:
The present invention is directed to the transmission line of electricity problem described in background technology; the rotation cross-arm of design composite material; make full use of composite material light, intensity is large, the advantage of corrosion-resistant and good insulating, available protecting shaft tower main body, is conducive to resuming work after line accident.Because cross-arm primary load is broken string Tension Difference, conventional truss-like composite material cross arm lower plane two main materials are arranged in the V-arrangement all tilted up and down, when there being longitudinal force T, present the stress form drawing a pressure, and component by curved, does not only bear axial force.And because support insulator and composite insulator are all hinged with tower body in the present invention, support insulator and composite insulator can rotate freely in certain angle, after stressed, longitudinal force can be balanced by moment of flexure and shearing force, by rotating release tension force.And two the end of insulator hanging wire wire clamp is set, suspension string can be cancelled on shaft tower, allow wire directly be connected with hanging wire wire clamp.
Primary structure member of the present invention all adopts circular cross-section; wherein pressurized material adopts support insulator; tension material adopts composite insulator; make use of the tensile property that composite material is excellent; according to the preferred angle 30 ~ 45 ° between the two of mechanical analysis; reasonable stress, available protecting agent structure also rationally discharges tension force.
The present invention is meeting under the prerequisite in electric clearance, lead wire and earth wire skew etc., the angle steel be fixedly connected with tower body is set, arrange between angle steel two limits opposing upper and lower or be bolt or be the jointed shaft of bearing pin form, jointed shaft arranges hinge, by at the link plate connecting struts insulator of hinge opposite side or composite insulator, when ensureing bonding strength, can protect and realizing cross-arm freely rotating along line direction.When wire has longitudinal load to steel tower, cross-arm just rotates, and release Tension Difference, until longitudinal load stops operating after discharging completely.The link plate arranged is convenient to connecting insulator, and the angle that can realize between support insulator and composite insulator arranges requirement.In order to further guaranteed strength and force request, stiffening rib is set between angle steel.
The circular cross-section design annular anchor ear that the present invention is directed to steel rod tower replaces angle steel, utilize the unitary design of annular anchor ear, more be convenient to install and fastening, stiffening rib also can be set between two mounting ears to improve intensity, the hinge corresponding with composite insulator is arranged to rhombogen, more utilize oblique installation composite insulator, rotatable.
When the present invention is applied to four angle towers, the hinged end of support insulator is stretched into the inside of four angle towers, be conducive to reducing insulated lengths.
The length of insulator of the present invention crosses pressure according to meeting thunder and lightning, minimum clearance between live part and shaft tower framework designs, 220kV electric pressure high-tension line is the lightning surge gap of 1.9 meters, 110kV electric pressure high-tension line is the lightning surge gap of 1 meter, ensure that thunder and lightning crosses pressure, the Clearance joints of charged position and shaft tower main body meets the demands, safe and reasonable.
The present invention is convenient to implement very much, for newly-built circuit, by Path selection and ranking, especially it is excessive that heavy ice-covering area cannot solve longitudinal tension force difference, select composite rotation cross-arm, first determine its electric clearance by electrical design personnel, determine shaft tower tower head size, then determined to adopt which kind of structure shaft tower to carry out appropriate design by structure design personnel, determine shaft tower pattern, reduce the risk that circuit brings to operation maintenance owing to easily producing longitudinal unbalance tension force.
To sum up, the present invention have structure simple, be convenient to implement, the advantage of reasonable in design, lightweight, available protecting shaft tower main body.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of embodiment of the present invention;
Fig. 2 is the schematic diagram of another kind of embodiment of the present invention.
Wherein, 1, tower body, 2, angle steel, 3, support insulator, 4, hanging wire wire clamp, 5, composite insulator, 6, link plate, 7, hinge, 8, jointed shaft, 9, annular anchor ear, 10, mounting ear.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further details:
Embodiment 1
A kind of preferred embodiment of composite rotation cross-arm of the present invention as shown in Figure 1, it mainly comprises support insulator 3, composite insulator 5.Support insulator 3 and composite insulator 5 are arranged on tower body 1 each via hinge member, support insulator 3 is horizontally hinged on tower body 1, vertically with tower body 1 to arrange, composite insulator 5 and tower body 1 tilt hinged, and the end of composite insulator 5 and the end of support insulator 3 converge merga pass hanging wire wire clamp 4 and couple together.When described composite rotation cross-arm is arranged on 110kV electric pressure high-tension line, the length of support insulator 3 is greater than 1 meter, cross pressure to meet thunder and lightning, the minimum clearance between live part and shaft tower framework designs, and 110kV electric pressure high-tension line is the lightning surge gap of 1 meter.When described composite rotation cross-arm is arranged on 220kV electric pressure high-tension line, the length of support insulator 3 is greater than 1.9 meters, cross pressure to meet thunder and lightning, the minimum clearance between live part and shaft tower framework designs, and 220kV electric pressure high-tension line is the lightning surge gap of 1.9 meters.Angle between support insulator 3 and composite insulator 5 preferably 30 ~ 45 °.In the present embodiment, composite insulator 5 is positioned at above support insulator 3, and the angle between support insulator 3 and composite insulator 5 is 30 °.
Described hinge member comprises about two angle steel 2 positioned opposite.One of them limit of angle steel 2 being positioned at top is connected with tower body 1 bolt or is welded and fixed, and another limit is horizontally disposed with.One of them limit of angle steel 2 being positioned at below is connected with tower body 1 bolt or is welded and fixed, and another limit is horizontally disposed with.Vertical stiffening rib is welded between two angle steel 2.Install jointed shaft 8 between two limits that the angle steel of top and the angle steel of below are oppositely arranged, described jointed shaft 8 installs hinge 7, and the side of the corresponding jointed shaft 8 of described hinge 7 arranges hinge barrels, and the opposite side of hinge is platy structure.The cuboid that the platy structure of the described hinge 7 corresponding with support insulator 3 is, the rhombogen that the platy structure of the hinge 7 corresponding with composite insulator 5 is, is convenient to hinged and installs composite insulator.The link plate 6 that the platy structure of hinge 7 is vertical with hinge relative to one end welding of hinge barrels, described link plate 6 is offered two screwed holes corresponding with the link end of support insulator and composite insulator.The link end of support insulator 3 and composite insulator 5 is hinged on tower body respectively by link plate 6, hinge 7, and the other end remittance merga pass hanging wire wire clamp 4 of support insulator 3 and composite insulator 5 is connected.
Embodiment 2
As shown in Figure 2, the cross-arm of composite rotation described in the present embodiment is arranged in steel rod tower, and support insulator 3 and composite insulator 5 are hinged on the same bus of tower body 1.Be with the difference of embodiment 1: described support insulator 3 and composite insulator 5 comprise with the hinge member of tower body 1 annular anchor ear 9 being arranged on and tower body 1 is fastened by bolts, the side that annular anchor ear 9 is oppositely arranged bolt arranges two mounting ears 10 opposing upper and lower, between two mounting ears 10, jointed shaft 8 is set, between described mounting ear 10, also stiffening rib is set.Jointed shaft 8 is installed hinge 7, the form that arranges of hinge 7 is identical with embodiment 1.The other end of hinge 7 arranges vertical with hinge 7 link plate 6 for connecting struts insulator and composite insulator, described link plate 6 is offered two screwed holes corresponding with the link end of support insulator and composite insulator.
Embodiment 3
Be different from embodiment 2, the cross-arm of composite rotation described in the present embodiment is arranged on four angle towers of steel angle structure, support insulator 3 and composite insulator 5 are connected in the vertical guide at the center line place on four one of them limit of angle tower, and support insulator 3 takes the design identical with embodiment 1 with composite insulator 5 with the hinge member of four angle towers.Be with the difference of embodiment 1: in order to reduce insulated lengths, a part for support insulator 3 has been extend into the inside of four angle towers by the present embodiment, makes the hinged end of support insulator 3 and composite insulator 5 on same plumb line.Concrete, composite insulator 5 is hinged on the center line on one of them limit of four angle towers.A link is connected in four angle tower interior welds or bolt, link to be positioned at immediately below composite insulator 5 and four angle tower hinged places or immediately below any position partially, link can be the frame structure that angle steel etc. is welded, and the object designing this link provides one to connect body to support insulator 3.Link arranges the hinge member of support insulator 3, ensures that support insulator 3 is positioned on same plumb line with the hinged end of composite insulator 5.
Claims (5)
1. composite rotation cross-arm, it is characterized in that: comprise the support insulator (3) and composite insulator (5) that are hinged on tower body (1) the same side, described support insulator (3) is vertical with tower body (1) to be arranged, the end of described composite insulator (5) tiltedly points to the end of support insulator (3), and the end of composite insulator (5) is connected by the hanging wire wire clamp being connected ground wire with support insulator (3) end;
Described composite rotation cross-arm is arranged in steel rod tower, support insulator (3) and composite insulator (5) are hinged on the same bus of tower body, support insulator (3) and composite insulator (5) comprise with the hinge member of tower body (1) annular anchor ear (9) being arranged on and tower body is fastened by bolts, the side that described annular anchor ear (9) is oppositely arranged bolt arranges two mounting ears opposing upper and lower (10), jointed shaft (8) is set between two mounting ears (10), jointed shaft (8) is installed hinge (7), the other end of hinge (7) arranges vertical with the hinge link plate (6) for connecting struts insulator and composite insulator, described link plate (6) is offered two screwed holes corresponding with the link end of support insulator and composite insulator.
2. composite rotation cross-arm according to claim 1, is characterized in that: described support insulator (3) is positioned at the below of composite insulator (5), and the angle between support insulator (3) and composite insulator (5) is 30 ~ 45 °.
3. composite rotation cross-arm according to claim 1 and 2, it is characterized in that: the cuboid that the hinge (7) corresponding with support insulator (3) is side band rotating shaft cylinder, the rhombogen that the hinge (7) corresponding with composite insulator (5) is side band rotating shaft cylinder.
4. composite rotation cross-arm according to claim 1 and 2, is characterized in that: described composite rotation cross-arm is arranged in 110kV electric pressure high-tension line, and the length of support insulator (3) is greater than 1 meter.
5. composite rotation cross-arm according to claim 1 and 2, is characterized in that: described composite rotation cross-arm is arranged in 220kV electric pressure high-tension line, and the length of support insulator (3) is greater than 1.9 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310336901.3A CN103437586B (en) | 2013-08-05 | 2013-08-05 | Composite rotation cross-arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310336901.3A CN103437586B (en) | 2013-08-05 | 2013-08-05 | Composite rotation cross-arm |
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| Publication Number | Publication Date |
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| CN103437586A CN103437586A (en) | 2013-12-11 |
| CN103437586B true CN103437586B (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310336901.3A Active CN103437586B (en) | 2013-08-05 | 2013-08-05 | Composite rotation cross-arm |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104746935B (en) * | 2015-04-07 | 2017-07-07 | 江苏神马电力股份有限公司 | Power transmission tower |
| CN105569415B (en) * | 2015-12-23 | 2018-02-06 | 内蒙古科技大学 | The nodal point connecting of lattice concrete filled steel tube wind power tower |
| CN106677595A (en) * | 2016-11-22 | 2017-05-17 | 常熟风范电力设备股份有限公司 | Three-pipe type flexible composite insulated cross arm |
| CN106836945A (en) * | 2017-03-24 | 2017-06-13 | 国家电网公司 | A kind of composite rotates cross-arm tower |
| CN108374593B (en) * | 2018-02-13 | 2023-09-12 | 浙江华云电力工程设计咨询有限公司 | Steel composite combined stress type cross arm pole tower structure |
| CN112282486A (en) * | 2020-11-06 | 2021-01-29 | 广东电网有限责任公司广州供电局 | Novel steel pylons cross arm |
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| DE447321C (en) * | 1927-07-20 | Siemens Schuckertwerke G M B H | Line mast with swiveling arm | |
| DE596177C (en) * | 1930-10-21 | 1934-04-30 | Otto Stoetzner Dr Ing | Pivoting boom for hanging overhead lines |
| CA790270A (en) * | 1968-07-23 | E. Lewis Paul | Articulated crossarm assembly | |
| US6227749B1 (en) * | 1998-06-08 | 2001-05-08 | Ngk Insulators, Ltd. | Swivel base assembly for connecting insulator to support structure |
| CN201466635U (en) * | 2009-06-19 | 2010-05-12 | 国网电力科学研究院武汉南瑞有限责任公司 | Insulating tower head of composite insulating pole tower |
| CN201584691U (en) * | 2009-12-11 | 2010-09-15 | 江西吉安供电公司 | Special tool for 220KV double-circuit common-tower line accessing tension-resistance high-pressure high-electric field |
| CN203462806U (en) * | 2013-08-05 | 2014-03-05 | 河北省电力勘测设计研究院 | Composite rotary cross arm |
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2013
- 2013-08-05 CN CN201310336901.3A patent/CN103437586B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE447321C (en) * | 1927-07-20 | Siemens Schuckertwerke G M B H | Line mast with swiveling arm | |
| CA790270A (en) * | 1968-07-23 | E. Lewis Paul | Articulated crossarm assembly | |
| DE596177C (en) * | 1930-10-21 | 1934-04-30 | Otto Stoetzner Dr Ing | Pivoting boom for hanging overhead lines |
| US6227749B1 (en) * | 1998-06-08 | 2001-05-08 | Ngk Insulators, Ltd. | Swivel base assembly for connecting insulator to support structure |
| CN201466635U (en) * | 2009-06-19 | 2010-05-12 | 国网电力科学研究院武汉南瑞有限责任公司 | Insulating tower head of composite insulating pole tower |
| CN201584691U (en) * | 2009-12-11 | 2010-09-15 | 江西吉安供电公司 | Special tool for 220KV double-circuit common-tower line accessing tension-resistance high-pressure high-electric field |
| CN203462806U (en) * | 2013-08-05 | 2014-03-05 | 河北省电力勘测设计研究院 | Composite rotary cross arm |
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| CN103437586A (en) | 2013-12-11 |
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Address after: 050031 No. 6 Jianbei Street, Chang'an District, Shijiazhuang City, Hebei Province Patentee after: China Electric Power Construction Group Hebei electric survey and Design Research Institute Co., Ltd. Address before: 050031 No. 6 Jianbei Street, Chang'an District, Shijiazhuang City, Hebei Province Patentee before: Hebei Province Power Surveying Design & Research Institute |