CN109904824B - Small wire line lifting cross arm - Google Patents
Small wire line lifting cross arm Download PDFInfo
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- CN109904824B CN109904824B CN201910194335.4A CN201910194335A CN109904824B CN 109904824 B CN109904824 B CN 109904824B CN 201910194335 A CN201910194335 A CN 201910194335A CN 109904824 B CN109904824 B CN 109904824B
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- cross arm
- upper cross
- hoop
- lower cross
- fixed
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 66
- 229910052742 iron Inorganic materials 0.000 claims abstract description 30
- 239000012212 insulator Substances 0.000 claims abstract description 14
- 239000004020 conductor Substances 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 33
- 239000010959 steel Substances 0.000 claims description 33
- 239000004568 cement Substances 0.000 claims description 17
- 235000000396 iron Nutrition 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Suspension Of Electric Lines Or Cables (AREA)
- Electric Cable Installation (AREA)
Abstract
The invention relates to a small conductor circuit lifting cross arm, in particular to a small conductor circuit lifting cross arm, which relates to a cross arm for hanging electric wires and aims to solve the problem that the ground distance of a small conductor circuit conductor cannot meet the specification; one end of the upper cross arm is fixedly connected with the outer circumference of the upper cross arm hoop through an upper cross arm supporting iron, and the other end of the upper cross arm is fixedly provided with a first insulator connecting piece; an included angle of less than 180 degrees is formed between the upper cross arm and the upper cross arm iron support. The invention can improve the distance between the lead of the small lead circuit and the ground; potential safety hazards of the line can be eliminated in a short time; simple structure, easily fixed mounting.
Description
Technical Field
The present invention relates to a cross arm for suspending an electric wire.
Background
According to the 'overhead transmission line operation regulations', the distance between the conductor of a 35kV small-conductor line and the ground is larger than 7.0 meters, but in practice, the distance between the conductor and the ground cannot meet the requirement of 7.0 meters due to the fact that a channel is filled in a protection area of a part of 35kV lines, and the lines cannot be timely reconstructed in a short period, so that the potential safety hazard of the lines is caused, and the threat to the safe operation of personnel and the lines is caused.
Disclosure of Invention
The invention aims to solve the problem that the distance between a wire of a small wire circuit and the ground cannot meet the requirement, and provides a small wire circuit lifting cross arm.
The small wire line lifting cross arm comprises an upper cross arm part,
the upper cross arm part comprises an upper cross arm, upper cross arm supporting iron and an upper cross arm hoop;
one end of the upper cross arm is fixedly connected with the outer circumference of the upper cross arm hoop through an upper cross arm supporting iron, and the other end of the upper cross arm is fixedly provided with a first insulator connecting piece;
an included angle of less than 180 degrees is formed between the upper cross arm and the upper cross arm iron support.
The invention has the beneficial effects that:
1. the distance between the lead of the small lead line and the ground can be increased on the original basis, so that the small lead line meets the regulation in the overhead transmission line operating regulation;
2. the potential safety hazard of the circuit can be eliminated in a short time without complex transformation.
Drawings
FIG. 1 is a schematic structural view of a small wire line lifting cross arm according to the present invention;
fig. 2 is a schematic view of an assembly structure of the small conductor line lifting cross arm and a cement pole of the invention.
Detailed Description
Detailed description of the invention
The small-lead line lifting cross arm is a 35kV line cement pole lead lifting cross arm researched and produced aiming at the characteristics that the influence of horizontal load and vertical load of a 35kV small-lead line lead on a cement pole is small, the structure of the cement pole cross arm is simple, and the processing is easy; the invention is used for being installed at the head of a cement pole, achieves the purposes of integrally lifting a cross arm and increasing the distance between a lead and the ground, and can be installed in time according to the requirement, so that the potential safety hazard of a circuit is eliminated in time.
The existing cross arm cannot be directly lifted to the required height, and because when an electric power circuit is initially erected, in order to meet technological requirements, too much lifting room cannot be left at the top end of an electric pole, and the requirement for higher lifting height cannot be met.
There is therefore a need for a device that can be raised to a higher height to compensate for the height deficiencies of the mast.
As shown in fig. 1, the upper cross arm part comprises an upper cross arm 1, an upper cross arm iron 2 and an upper cross arm hoop 3;
one end of an upper cross arm 1 is fixedly connected with the outer circumference of an upper cross arm hoop 3 through an upper cross arm supporting iron 2, and the other end of the upper cross arm 1 is fixedly provided with a first insulator connecting piece 6;
an included angle is formed between the upper cross arm 1 and the upper cross arm iron support 2.
As shown in fig. 2, the upper cross arm part is fixedly mounted on the head of the concrete pole 15 through the upper cross arm hoop 3, so that the overall height of the upper cross arm 1 is more than 2.1m, and the first insulator connecting piece 6 suspends the lead through one insulator.
Detailed description of the invention
The second embodiment differs from the first embodiment in that, as shown in fig. 1, the lower cross arm portion includes two lower cross arms 4 and a lower cross arm hoop 5;
two mirror-symmetrical lower cross arms 4 are fixed on the outer circumference of the lower cross arm hoop 5, and the plane of the two lower cross arms 4 is coplanar with the circular plane of the lower cross arm hoop 5;
two ends of the two lower cross arms 4 are respectively folded and fixed, and a second insulator connecting piece 7 and a third insulator connecting piece 8 are respectively fixed at the two folded ends of the lower cross arms 4;
the upper cross arm hoop 3 is coaxial with the lower cross arm hoop 5.
As shown in fig. 2, the lower cross arm 4 is positioned below the upper cross arm 1, is installed on the cement pole 15 through the lower cross arm hoop 5, and is bilaterally symmetrical relative to the cement pole 15; each of the second insulator connector 7 and the third insulator connector 8 is provided with an insulator for suspending a wire.
The lifting cross arm of the small wire line can integrally lift the distance between the wire and the ground by 1.5 m. And this little wire way of 35KV promotes simple structure of cross arm, adopts the split type structure of upper cross arm portion and lower cross arm portion, easily fixed mounting.
Detailed description of the invention
The third embodiment is different from the second embodiment in that the third embodiment further includes a hoop connector 9, the lower end of the upper cross arm iron 2 is fixedly connected with one end of the hoop connector 9, the hoop connector 9 is fixed on the circumference of the upper cross arm hoop 3, and the hoop connector 9 is perpendicular to the plane of the upper cross arm hoop 3.
As shown in fig. 1 and 2, the hoop connector 9 is used to connect the upper cross arm iron 2 and the upper cross arm hoop 3, and is fixedly connected when a plurality of upper cross arm hoops 3 are used.
Detailed description of the invention
The difference between the fourth embodiment and the third embodiment is that the upper cross arm supporting iron 2 and the hoop connecting piece 9 are two respectively;
the upper ends of the two upper cross arm supporting irons 2 are fixedly connected with each other, and the lower ends of the two upper cross arm supporting irons 2 are respectively and fixedly connected with one end of each of the two hoop connecting pieces 9;
two hoop connectors 9 are located at the two ends of one diameter of the upper cross arm hoop 3 respectively.
As shown in fig. 1 and 2, the diameters of the two upper cross arm supporting irons 2 and the fixing points of the circumferential side walls of the upper cross arm supporting iron 2 and the upper cross arm hoop 3 form a triangular structure, so as to achieve the effect of firm support. Meanwhile, the upper cross arm 1 is respectively fixed with the two upper cross arm supporting irons 2 to form a triangular structure.
Detailed description of the invention
The difference between the fifth embodiment and the first, second or fourth embodiment is that the number of the upper cross arm hoops 3 is more than one and the upper cross arm hoops 3 are coaxially arranged at intervals, and the more than one upper cross arm hoops 3 are mutually fixed through the hoop connecting piece 9.
As shown in fig. 1 or fig. 2, the combination of the upper cross arm hoops 3 can form a sleeve with a certain length, and after the upper cross arm hoop 3 is sleeved and fixed on the head of the cement pole 15, the upper cross arm iron 2 is more firmly fixed relative to the cement pole 15, which is enough to support the weight of the upper cross arm 1 and the wires hung thereon.
As shown in fig. 1 or fig. 2, the hoop connectors 9 are connected and fixed to the sidewalls of the upper cross arm hoops 3 to fix the upper cross arm hoops 3, and in order to achieve a better fixing effect, the number of the hoop connectors 9 may be more than one, and the hoop connectors are circumferentially distributed on the sidewalls of the upper cross arm hoops 3.
Detailed description of the invention
The sixth embodiment is different from the fifth embodiment in that the spacing distance between the adjacent upper cross arm hoops 3 is 300-400 mm.
Detailed description of the invention
The seventh embodiment differs from the first, second, fourth or sixth embodiment in that, as shown in fig. 1 or fig. 2, the third embodiment further includes an upper cross arm pull steel 11, two ends of the upper cross arm pull steel 11 are respectively fixed to the upper end of the upper cross arm iron 2 and the other end of the upper cross arm 1, and the upper cross arm pull steel 11, the upper cross arm iron 2 and the upper cross arm 1 form a triangular structure.
The top end of the upper cross arm supporting iron 2 is used as a hanging point of the upper cross arm pull steel 11, and meanwhile, the position where the upper cross arm pull steel 11 is fixed with the upper cross arm 1 can be one end of the first insulator connecting piece 6 fixed at the end of the upper cross arm 1, and also can be a non-end part of the upper cross arm 1 as long as the upper cross arm pull steel 11, the upper cross arm supporting iron 2 and the upper cross arm 1 form a triangular stable structure.
Detailed description of the invention
The eighth embodiment differs from the second, fourth or sixth embodiment in that the steel bar further comprises a lower cross arm heavy-duty steel 12, one end of the lower cross arm heavy-duty steel 12 is fixed to the upper end of the upper cross arm supporting iron 2, and the other end of the lower cross arm heavy-duty steel is fixed to the closed end of the two lower cross arms 4.
As shown in fig. 1 or fig. 2, the top end of the upper cross arm iron 2 also serves as a hanging point for the lower cross arm heavy steel 12, and the cement pole 15 can be regarded as an extension of the upper cross arm iron 2, so that when the device of the present invention is mounted on the cement pole 15, the lower cross arm heavy steel 12, the upper cross arm iron 2 and the cement pole 15) and the lower cross arm 4 form a stable triangular structure to ensure that the lower cross arm 4 is firmly fixed on the cement pole 15.
Detailed description of the invention
The difference between the ninth embodiment and the eighth embodiment is that the steel hoop further includes a lower cross arm small-pulling steel 13 and a lower cross arm small-pulling steel hoop 14, one end of the lower cross arm small-pulling steel 13 is fixed on the circumference of the lower cross arm small-pulling steel hoop 14, and the other end of the lower cross arm small-pulling steel 13 is fixed at the other end of the lower cross arm 4.
As shown in fig. 1 or fig. 2, the lower cross arm small-pull steel anchor ear 14 is used for being hooped on the cement pole 15, and the lower cross arm 4 is pulled by the cement pole 15, at this time, the cement pole 15, the lower cross arm small-pull steel 13 and the lower cross arm 4 form a stable triangular structure; and the lower cross arm small tension steel 13, the upper cross arm hoop 3 and the lower cross arm hoop 5 are coaxial.
The installation method of the small conductor line lifting cross arm comprises the following steps:
1. after the power failure and electricity testing of the power transmission line provided with the device are carried out, and the fact that the line has no voltage is confirmed, grounding wires are hung on the serial number n-1 and the serial number n +1) of the electric poles on the two sides of the serial number n) of the electric pole required to be provided with the device;
2. dropping the conducting wire with the pole serial number n) to the ground;
3. dismantling the original cross arm on the pole serial number n);
4. the upper cross arm part in the device is installed and can be assembled by a plurality of people;
5. hoisting the lower cross arm part by using a pulley block, then loosening screws of a lower cross arm hoop 5, mounting a lower cross arm 4 on the pole serial number n), gradually lifting the lower cross arm 4 to ensure that the lower cross arm large pull steel 12 can be fixed at the top of the upper cross arm iron support 2, and finally fastening screws of all connecting parts;
6. restoring the wire of the pole serial number n).
Claims (5)
1. A lifting cross arm for small wire lines is characterized by comprising an upper cross arm part,
the upper cross arm part comprises an upper cross arm (1), upper cross arm supporting iron (2) and an upper cross arm hoop (3);
one end of the upper cross arm (1) is fixedly connected with the outer circumference of the upper cross arm hoop (3) through an upper cross arm supporting iron (2), and the other end of the upper cross arm (1) is fixedly provided with a first insulator connecting piece (6);
an included angle of less than 180 degrees is formed between the upper cross arm (1) and the upper cross arm supporting iron (2);
the upper cross arm part is fixedly arranged on the head of the cement pole (15) through an upper cross arm hoop (3);
also comprises a lower cross arm part and a lower cross arm part,
the lower cross arm part comprises two lower cross arms (4) and a lower cross arm hoop (5);
two mirror-symmetric lower cross arms (4) are fixed on the outer circumference of the lower cross arm hoop (5), and the plane of the two lower cross arms (4) is coplanar with the circular surface of the lower cross arm hoop (5);
two ends of the two lower cross arms (4) are respectively folded and fixed, and a second insulator connecting piece (7) and a third insulator connecting piece (8) are respectively fixed at the two folded ends of the lower cross arms (4);
the upper cross arm hoop (3) is coaxial with the lower cross arm hoop (5);
the lower end of the upper cross arm supporting iron (2) is fixedly connected with one end of the hoop connecting piece (9), the hoop connecting piece (9) is fixed on the outer circumference of the upper cross arm hoop (3), and the hoop connecting piece (9) is perpendicular to the plane of the upper cross arm hoop (3);
the upper cross arm supporting iron (2) and the hoop connecting piece (9) are respectively two;
the upper ends of the two upper cross arm supporting irons (2) are fixedly connected with each other, and the lower ends of the two upper cross arm supporting irons (2) are respectively and fixedly connected with one end of each of the two hoop connecting pieces (9);
the two hoop connecting pieces (9) are respectively positioned at two ends of one diameter of the upper cross arm hoop (3);
the diameters of the two upper cross arm supporting irons (2) and the fixed points of the circumferential side walls of the upper cross arm supporting irons (2) and the upper cross arm hoop (3) form a triangular structure;
the number of the upper cross arm hoops (3) is more than one and is coaxially arranged at intervals, and the more than one upper cross arm hoops (3) are mutually fixed through the hoop connecting pieces (9).
2. The small conductor line lifting cross arm as claimed in claim 1, characterized in that the spacing distance between adjacent upper cross arm hoops (3) is 300-400 mm.
3. The small wire line lifting cross arm as claimed in claim 2, further comprising an upper cross arm pull steel (11), both ends of the upper cross arm pull steel (11) are fixed to the upper end of the upper cross arm iron (2) and the other end of the upper cross arm (1), respectively, and the upper cross arm pull steel (11), the upper cross arm iron (2) and the upper cross arm (1) form a triangular structure.
4. The small wire line lifting cross arm according to claim 3, further comprising a lower cross arm heavy pull steel (12), wherein one end of the lower cross arm heavy pull steel (12) is fixed to the upper end of the upper cross arm supporting iron (2), and the other end is fixed to the closed end of the two lower cross arms (4).
5. The small wire line lifting cross arm according to claim 4, further comprising a lower cross arm small pull steel (13) and a lower cross arm small pull steel hoop (14), wherein one end of the lower cross arm small pull steel (13) is fixed on the circumference of the lower cross arm small pull steel hoop (14), and the other end of the lower cross arm small pull steel (13) is fixed at the other end of the lower cross arm (4) which is folded; and the lower cross arm small pull steel (13), the upper cross arm hoop (3) and the lower cross arm hoop (5) are coaxial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910194335.4A CN109904824B (en) | 2019-03-14 | 2019-03-14 | Small wire line lifting cross arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910194335.4A CN109904824B (en) | 2019-03-14 | 2019-03-14 | Small wire line lifting cross arm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109904824A CN109904824A (en) | 2019-06-18 |
| CN109904824B true CN109904824B (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910194335.4A Active CN109904824B (en) | 2019-03-14 | 2019-03-14 | Small wire line lifting cross arm |
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| Country | Link |
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| CN (1) | CN109904824B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111910982A (en) * | 2020-08-05 | 2020-11-10 | 国网黑龙江省电力有限公司伊春供电公司 | Transmission line ground clearance promotes cross arm |
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| CN207265618U (en) * | 2017-10-24 | 2018-04-20 | 甘肃省电力公司金昌供电公司 | A kind of straight line pole cap for flock of birds interference feeder line fault |
| KR20180089155A (en) * | 2017-01-31 | 2018-08-08 | 성림엔지니어링 주식회사 | Supporting bar for electric power line |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204715854U (en) * | 2015-06-29 | 2015-10-21 | 国网山东诸城市供电公司 | A kind of transmission line wire lifting bracket |
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| CN208249775U (en) * | 2018-05-14 | 2018-12-18 | 国网黑龙江省电力有限公司哈尔滨供电公司 | A kind of single transmission line wire lift structure |
| CN108695771A (en) * | 2018-07-24 | 2018-10-23 | 国网辽宁省电力有限公司本溪供电公司 | Transmission line of electricity OPGW optical cable preformed armor rods install Special-purpose lifting tool |
| CN208423656U (en) * | 2018-07-27 | 2019-01-22 | 中建五局第三建设有限公司 | Temporary power utilization electric wire support |
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2019
- 2019-03-14 CN CN201910194335.4A patent/CN109904824B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201539123U (en) * | 2009-09-02 | 2010-08-04 | 南通市神马电力科技有限公司 | Inverted F-shaped insulation tower with slant pull rods used in power grid transmission lines |
| CN104196303A (en) * | 2014-09-01 | 2014-12-10 | 江苏神马电力股份有限公司 | Power transmission tower |
| CN105977860A (en) * | 2015-11-23 | 2016-09-28 | 国家电网公司 | Composite cross-arm insulator device and method for replacing overhead transmission line |
| KR20180089155A (en) * | 2017-01-31 | 2018-08-08 | 성림엔지니어링 주식회사 | Supporting bar for electric power line |
| CN206775082U (en) * | 2017-06-08 | 2017-12-19 | 刘宏建 | 10kV overhead power line adjustable switch stands |
| CN207265618U (en) * | 2017-10-24 | 2018-04-20 | 甘肃省电力公司金昌供电公司 | A kind of straight line pole cap for flock of birds interference feeder line fault |
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| CN109904824A (en) | 2019-06-18 |
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