CN109004576B - High-altitude temporary anchor crimping construction method suitable for gap type heat-resistant capacity-increasing lead - Google Patents
High-altitude temporary anchor crimping construction method suitable for gap type heat-resistant capacity-increasing lead Download PDFInfo
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- CN109004576B CN109004576B CN201810901331.0A CN201810901331A CN109004576B CN 109004576 B CN109004576 B CN 109004576B CN 201810901331 A CN201810901331 A CN 201810901331A CN 109004576 B CN109004576 B CN 109004576B
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
- H02G1/04—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables for mounting or stretching
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Abstract
The invention provides a high-altitude temporary anchor crimping construction method suitable for a gap type heat-resistant capacity-increasing lead, which comprises the following steps: arranging a strain tower, and lifting a lead into a strain tower cross arm paying-off pulley for carrying out wire lifting; the special aluminum rope tightening clamp for installing the temporary tightening wire pre-tightens and clamps the wire, and an outer aluminum wire layer of the wire is stripped to realize subsequent temporary anchoring of the steel core of the wire; the two sets of steel core tighteners are mutually and alternately matched to move and sleeve the tension-resistant aluminum pipe from the steel core of the lead to the upper part of the outer aluminum wire layer of the lead; before the tension aluminum pipe moves, the stripped outer aluminum wire layer of the lead is recovered to be wound on the steel core; hanging a steel core of a lead on a strain insulator string to realize crimping, recovering the remaining stripped outer aluminum wire layer of the lead to wind the steel core, pushing back the strain aluminum pipe to the position above a steel anchor, and crimping the strain aluminum pipe on the lead by adopting a back-pressing process; and then, carrying out temporary anchor crimping on the large-size side wire to realize the high-altitude temporary anchor crimping construction of the wire. The method is safe and reliable, strong in practicability and capable of improving the construction efficiency.
Description
Technical Field
The invention relates to the technical field of electric power construction, in particular to a high-altitude temporary anchor crimping construction method suitable for a gap type heat-resistant capacity-increasing lead.
Background
With the development of social economy, part of power transmission lines in developed areas begin to use gap type heat-resistant capacity-increasing wires in order to meet the demand of rapid load increase, but due to the special structure of the wires, grease is filled between an outer aluminum wire layer and a central steel core, and the wires cannot be anchored in the air by using a common wire clamping device, so that the later technical transformation becomes very difficult. In addition, lines using the lead are all located in areas with developed economy, important loads and huge power failure pressure, and the blue and green claim problem is relatively outstanding. In the transformation process, the requirements of construction without falling to the ground or replacing the lead are also increased continuously.
However, in the existing construction method, the conductor of the whole strain section is firstly removed and paid out again, the aluminum special-purpose rope is used for clamping the adjacent anchor conductor (the adjacent anchor tension is not more than 70% of the conductor tension), then the conductor is printed and loosened to the ground, the conductor is broken and pressed, and the conductor is installed through a steel anchor belt 105% tension accessory. The whole construction process is long in time consumption, the anchoring force cannot exceed 70% of the wire tension due to the fact that the special aluminum rope tightening clamp is limited by product technical parameters, high-altitude falling risks exist in the wire tightening process, and wire feeding operation cannot be achieved. Secondly, because the heat-resisting increase capacity wire of clearance type is through long-time operation, a large amount of pollutants of outer aluminium line absorption, the special tightrope clamp of exclusive use aluminium faces anchor wire and has the safety risk. Furthermore, if a non-landing construction method is adopted, 105% of wire tension is required when the aluminum special rope clamp is close to the holding force of an anchor tool, and irreversible damage can be caused to the wire.
Therefore, how to enhance the safety guarantee of the gap type heat-resistant capacity-increasing lead in the process of approaching the anchor improves the construction quality and efficiency, reduces the safety risks of people, equipment and materials, and becomes the direction of the effort for improving the construction method of the gap type heat-resistant capacity-increasing lead.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a high-altitude temporary anchor crimping construction method which is safe, reliable, strong in practicability and capable of improving the construction efficiency and is suitable for clearance type heat-resistant capacity-increased wires; the construction method can save the construction cost of the project, reduce the construction difficulty and the construction safety risk and hidden danger, and is suitable for the line migration and transformation project adopting the clearance type heat-resisting capacity-increasing lead for construction.
In order to achieve the purpose, the invention is realized by the following technical scheme: a high-altitude temporary anchor crimping construction method suitable for a gap type heat-resistant capacity-increasing lead is characterized by comprising the following steps of: firstly, arranging a strain tower, and lifting a lead into a strain tower cross arm paying-off pulley for carrying out lead lifting; secondly, a special aluminum rope tightening clamp for installing a temporary tightening wire pre-tightens and clamps the wire, and an outer aluminum wire layer of the wire is stripped to realize subsequent temporary anchoring of a steel core of the wire; then, using two sets of steel core tighteners to be mutually and alternately matched to move and sleeve the tension-resistant aluminum pipe from the steel core of the lead to the position above the outer aluminum wire layer of the lead; before the tension aluminum pipe moves, the stripped outer aluminum wire layer of the lead is recovered to be wound on the steel core; finally, hanging the steel core of the wire on the strain insulator string to realize crimping, recovering the stripped outer aluminum wire layer of the wire to wind on the steel core, pushing the strain aluminum pipe back to the position above the steel anchor, and crimping the strain aluminum pipe on the wire by adopting a back-pressing process; and then, carrying out temporary anchor crimping on the large-size side wire to realize the high-altitude temporary anchor crimping construction of the wire.
In the scheme, the overhead temporary anchoring and crimping construction method can be applied to overhead anchoring of the gap type heat-resistant capacity-increasing lead, not only can the success of one-time crimping of the accessory of the old lead in the air be realized, the ground operation is not needed, but also the effect of avoiding potential safety hazards of falling from the high altitude to the overhead operation personnel can be achieved, and the overhead temporary anchoring and crimping construction method is favorable for popularization and application and popularization of overhead lines. Meanwhile, the high-altitude temporary anchor compression joint construction method is safe and reliable, high in practicability and capable of improving construction efficiency; the construction method can save the construction cost of the project, reduce the construction difficulty and the construction safety risk and hidden danger, and is suitable for the line migration and transformation project adopting the clearance type heat-resisting capacity-increasing lead for construction.
The gap type heat-resistant capacity-increasing wire is similar to a common wire, the main stress structure of the gap type heat-resistant capacity-increasing wire is a central steel core and bears more than 90% of tension, but the gap type heat-resistant capacity-increasing wire has a special structure that grease is filled between an outer aluminum wire layer and the central steel core, so that the outer aluminum wire layer is not directly contacted with the central steel core. The tool can not act on the outer layer aluminum wire as the common wire clamping device, and can act on the central inner layer steel core through the self-tightening of the wire to realize the adjacent anchoring wire. Although the middle layer aluminum wire of the gap type heat-resistant capacity-increasing wire is a reinforced aluminum wire, the matched special tool can only be used by no more than 70% of the sag tension at most, and in order to realize the overhead anchor wire and fundamentally solve the anchor problem of the wire, the invention uses the strain aluminum pipe to be installed on the inner layer steel core by peeling off the outer aluminum wire layer. However, there is a problem that the tension resistant aluminum pipe cannot be sleeved on the outer aluminum wire layer in the air after the wire is broken. Therefore, the invention specially uses two sets of pre-twisted wire type wire tightening tools, namely the steel core wire tightener, which are mutually matched in an alternating way, and the strain aluminum pipe is sleeved on the outer layer aluminum wire layer and then is pressed in the air.
Firstly, arranging a strain tower, and lifting a lead into a strain tower cross arm paying-off pulley for carrying out lead lifting; secondly, a special aluminum rope tightening clamp for installing a temporary tightening wire pre-tightens and clamps the wire, and an outer aluminum wire layer of the wire is stripped to realize subsequent temporary anchoring of a steel core of the wire; then, using two sets of steel core tighteners to be mutually and alternately matched to move and sleeve the tension-resistant aluminum pipe from the steel core of the lead to the position above the outer aluminum wire layer of the lead; before the tension aluminum pipe moves, the stripped outer aluminum wire layer of the lead is recovered to be wound on the steel core; finally, hanging the steel core of the wire on the strain insulator string to realize crimping, recovering the stripped outer aluminum wire layer of the wire to wind on the steel core, pushing the strain aluminum pipe back to the position above the steel anchor, and crimping the strain aluminum pipe on the wire by adopting a back-pressing process; and then the large-size side wire is subjected to temporary anchor crimping, so that the high-altitude temporary anchor crimping construction of the wire is completed, and the method comprises the following steps: the method comprises the following steps:
firstly, arranging a strain tower, and lifting a lead into a strain tower cross arm paying-off tackle for carrying out lead lifting;
secondly, installing a special aluminum rope tensioning clamp for temporary tightening at a position A away from the wire hanging points on the two sides of the tension tower, and meanwhile, installing a chain hoist I on the tension tower, and connecting the chain hoist I with the special aluminum rope tensioning clamp to realize the first tightening of the wire;
thirdly, stripping an outer aluminum wire layer of the wire at a position which is away from the pulley by a distance B, and cleaning grease on the steel core of the wire to realize subsequent temporary anchoring of the steel core of the wire;
fourthly, a distance C is measured from left to right on a wire steel core, a first steel core tightener is positioned and installed, a second chain block is installed on the tension tower, and the wire is tightened for the second time through the connection of the second chain block and the first steel core tightener; then, cutting off the lead at the pulley, and sleeving a strain aluminum pipe;
fifthly, a distance D is taken from left to right on a stripped wire steel core at the rear side of the tension aluminum pipe, a second steel core tightener is positioned and installed, a third chain block is installed on the tension tower, and the third wire tightening is realized by connecting the third chain block with the second steel core tightener; then, removing the first steel core wire grip and the second chain hoist which are installed for the first time;
sixthly, winding the stripped outer aluminum wire layer of the wire on the steel core again, sleeving the strain aluminum pipe on the outer aluminum wire layer and pushing forward by a distance E; meanwhile, a first steel core wire grip which is positioned and installed and removed is measured at a distance F from left to right on a steel core of the wire, and a pulley block and a ground grinder are mechanically connected with the first steel core wire grip to pull the first steel core wire grip to tighten the steel core of the wire; then, removing the second steel core wire grip and the third chain block which are installed for the second time, adjusting the sag of the wire to the designed sag by using a pulley set and a ground grinding machine through the first steel core wire grip, and drawing and printing;
seventhly, cutting off the steel core of the lead at the printing position, and crimping the steel core of the lead with a steel anchor and hanging the steel anchor on the strain insulator string; then, removing the first steel core wire tightener installed for the third time, and winding the remaining stripped outer aluminum wire layer of the wire onto the steel core again; finally, pushing the tension aluminum pipe back to the position above the steel anchor, and crimping the tension aluminum pipe on the lead by adopting a back-pressing process;
eighthly, performing adjacent anchor compression joint on the large-size side conductor according to the first step to the seventh step;
and ninthly, removing the special aluminum rope clip on the lead to realize the high-altitude temporary anchor crimping construction of the lead.
In the second step, the distance A from the wire hanging points on the two sides of the strain tower refers to: at the position 10-15 meters away from the wire hanging points at the two sides of the tension tower.
In the second step, the first tightening of the wire is realized by connecting the chain hoist I with the special rope tightening clamp for aluminum: the first chain hoist is connected with the special aluminum rope tightening clamp to tighten the wire to 50% -70% of the tension of the tightening wire.
In the third step, stripping an outer aluminum wire layer of the lead at a position which is a distance B away from the pulley means that: at a distance of 4 meters from the trolley, 6 meters of outer aluminum wire layers were peeled apart.
In the fourth step, the step of measuring the distance C from left to right on the steel core of the wire and positioning and installing the steel core tightener I means that: a first steel core wire grip is positioned and installed on the steel core of the wire at a distance of 4 meters from left to right.
In the fourth step, the second tightening of the wire is realized by connecting the chain hoist II with the steel core tightener: the second chain hoist is connected with the steel core tightener to tighten the wire to 105% of the tightening tension.
In the fifth step, the step of taking the distance D from left to right to position and install the steel core wire grip II means that: a second steel core wire grip is positioned and installed at a distance of 1 m from left to right;
the third tightening of the wire is realized by connecting the chain hoist III with the steel core wire tightener II: the wire is tightened to 105% of the wire tightening tension by connecting the chain hoist III with the steel core wire tightener II.
In the sixth step, the strain aluminum pipe is sleeved on the outer aluminum wire layer and pushed forward by a distance E, namely: sleeving a strain aluminum pipe on the outer aluminum wire layer and pushing forwards for 2.5 m;
the first steel core wire grip for positioning, installing and removing the distance F from left to right on the steel core of the wire is as follows: a first steel core wire grip which is positioned, installed and removed at a distance of 4 meters is measured from left to right on a steel core of a wire.
In the sixth step, mechanically connecting the tackle pulley and the ground grinder to the first steel core tightener to pull the first steel core tightener to tighten the steel core of the wire means that: the trolley group and the ground grinder are mechanically connected with the first steel core wire grip to pull the first steel core wire grip to achieve wire grip, so that the stress of the steel core of the wire reaches 110%.
The second and third times of tightening of the wire are realized by tightening the steel core of the wire to 105% of the tightening tension, and the aluminum special rope tightening clamp is tightened to 50% -70% of the tightening tension; the purpose is to ensure that the steel core bears the main stress, and the special rope clip for aluminum only plays a role in two-way protection of the wire, so as to prevent the wire from being stranded; the steel core is tightened twice to be the tension of a tight wire of 105 percent, which is beneficial to the wire tension in the construction period to be in a balanced state all the time.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the high-altitude temporary anchor crimping construction method suitable for the gap type heat-resistant capacity-increasing lead is safe and reliable, high in practicability and capable of improving construction efficiency; the construction method can save the construction cost of the project, reduce the construction difficulty and the construction safety risk and hidden danger, and is suitable for the line migration and transformation project adopting the clearance type heat-resisting capacity-increasing lead for construction.
2. The overhead temporary anchoring and crimping construction method can be applied to overhead temporary anchoring of the gap type heat-resistant capacity-increasing lead, not only can successfully crimp an accessory in the air for one time without landing operation of the old lead be realized, but also the effect of avoiding potential safety hazards of overhead falling to overhead operators can be achieved, and the overhead temporary anchoring and crimping construction method is favorable for popularization and application and popularization of overhead lines.
Drawings
FIGS. 1-6 are schematic diagrams of the steps of the high-altitude temporary anchoring and crimping construction method applicable to the gap type heat-resistant capacity-increasing conductor of the invention;
wherein, 1 is the wire, 2 is the coaster, 3 is the special tightrope clamp of aluminium, 4 is outer aluminium wire layer, 5 is the steel core, 6 is strain insulator pipe, 7 is strain insulator string, 8 is chain calabash one, 9 is steel core turnbuckle one, 10 is chain calabash two, 11 is steel core turnbuckle two, 12 is chain calabash three, 13 is strain insulator tower cross arm.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Examples
In the embodiment, the rope tightening clamp special for the pulley and the aluminum, the chain block, the steel core tightener, the tension aluminum pipe, the tension insulator string, the pulley group and the ground winching machine are common tools in the electric power construction process, and the tools in the embodiment are all construction tools on the current market.
As shown in fig. 1 to 6, the high-altitude temporary anchoring and crimping construction method suitable for the gap type heat-resistant capacity-increasing lead of the invention is as follows: firstly, arranging a tension tower, and lifting a lead 1 into a tension tower cross arm 13 paying-off tackle 2 for carrying out wire lifting; secondly, the special aluminum rope tightening clamp 3 for installing the temporary tightening wire pre-tightens and clamps the wire 1, and the outer aluminum wire layer 4 of the wire 1 is stripped to realize subsequent temporary anchoring of the steel core 5 of the wire 1; then, using two sets of steel core tighteners to be mutually and alternately matched to move and sleeve the tension-resistant aluminum pipe 6 from the steel core 5 of the lead 1 to the upper part of the outer aluminum wire layer 4 of the lead 1; before the tension aluminum pipe 6 moves, the outer aluminum wire layer 4 of the stripped lead 1 is recovered to be wound on the steel core 5; finally, hanging the steel core 5 of the lead 1 on a strain insulator string 7 to realize crimping, recovering the remained stripped outer aluminum wire layer 4 of the lead to wind the steel core 5, pushing the strain aluminum pipe 6 back to the position above the steel anchor, and crimping the strain aluminum pipe 6 on the lead 1 by adopting a back-pressure process; and then, carrying out temporary anchor crimping on the large-size side wire to realize the high-altitude temporary anchor crimping construction of the wire.
The method specifically comprises the following steps:
firstly, setting a tension tower, and lifting a lead 1 into a tension tower cross arm paying-off tackle 2 for carrying out wire lifting;
secondly, installing a special aluminum tensioning rope clamp 3 for temporary tensioning at a position 10-15 meters away from the wire hanging points on the two sides of the tension tower, installing a chain hoist I8 on the tension tower, connecting the chain hoist I8 with the special aluminum tensioning rope clamp 3 to realize the first tensioning of the wire, and tensioning the wire to 50% -70% of the tensioning tension as shown in fig. 1;
thirdly, stripping an outer aluminum wire layer 4 of the wire with the length of 6 meters at a position 4 meters away from the pulley, and cleaning grease on a steel core 5 of the wire 1 to realize subsequent temporary anchoring of the steel core 5 of the wire 1;
fourthly, as shown in fig. 2, a first steel core tightener 9 with a distance of 4 meters is positioned and installed on the steel core 5 of the wire from left to right, a second chain block 10 is installed on the strain tower, the second tightening of the wire 1 is realized by connecting the second chain block 10 with the first steel core tightener 9, and the wire is tightened to 105% of the wire tightening tension; then, cutting off the lead 1 at the pulley 2, and sleeving a strain aluminum pipe 6, as shown in fig. 3;
fifthly, as shown in fig. 3, a steel core wire grip 11 is positioned and installed on the stripped wire steel core 5 at the rear side of the tension resistant aluminum pipe 6 at a distance of 1 m from left to right, a chain block III 12 is installed on the tension resistant tower, the wire is tightened for the third time by connecting the chain block III 12 with the steel core wire grip 11, and the wire 1 is tightened to be 105% of the wire tightening tension; then, removing the first steel core wire grip 9 and the second chain block 10 which are installed for the first time;
sixthly, as shown in fig. 4, the stripped outer aluminum wire layer 4 of the wire is wound on the steel core 5 again, and then the strain aluminum pipe 6 is sleeved on the outer aluminum wire layer 4 and pushed forwards for 2.5 meters; meanwhile, a steel core wire grip 9 which is positioned, installed and removed at a distance of 4 meters is measured from left to right on a steel core 5 of the wire 1, and a pulley block and a ground grinder are mechanically connected with the steel core wire grip 9 to pull the steel core wire grip 9 to tighten the steel core 5 of the wire; then, removing the second steel core wire grip 11 and the third chain block 12 which are installed for the second time, adjusting the sag of the wire 1 to the designed sag by using a tackle pulley set and a ground grinding machine through the first steel core wire grip 9, and drawing and printing;
seventhly, cutting off the steel core 5 of the lead 1 at the printing position, and crimping the steel core 5 of the lead 1 with a steel anchor and hanging the steel anchor on a strain insulator string 7 as shown in fig. 5; then, removing the steel core wire tightener I9 installed for the third time, and winding the outer aluminum wire layer 4 of the remaining stripped wire 1 onto the steel core 5 again; finally, pushing the tension aluminum tube 6 back to the position above the steel anchor, and crimping the tension aluminum tube 6 on the lead 1 by adopting a back-pressure process;
eighthly, performing adjacent anchor compression joint on the large-size side conductor according to the first step to the seventh step;
and ninthly, as shown in fig. 6, removing the special aluminum rope tensioning clamp 3 on the lead 1 to complete the high-altitude temporary anchoring and crimping construction of the lead.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (9)
1. A high-altitude temporary anchor crimping construction method suitable for a gap type heat-resistant capacity-increasing lead is characterized by comprising the following steps of: firstly, arranging a strain tower, and lifting a lead into a strain tower cross arm paying-off pulley for carrying out lead lifting; secondly, a special aluminum rope tightening clamp for installing a temporary tightening wire pre-tightens and clamps the wire, and an outer aluminum wire layer of the wire is stripped to realize subsequent temporary anchoring of a steel core of the wire; then, using two sets of steel core tighteners to be mutually and alternately matched to move and sleeve the tension-resistant aluminum pipe from the steel core of the lead to the position above the outer aluminum wire layer of the lead; before the tension aluminum pipe moves, the stripped outer aluminum wire layer of the lead is recovered to be wound on the steel core; finally, hanging the steel core of the wire on the strain insulator string to realize crimping, recovering the stripped outer aluminum wire layer of the wire to wind on the steel core, pushing the strain aluminum pipe back to the position above the steel anchor, and crimping the strain aluminum pipe on the wire by adopting a back-pressing process; then, carrying out temporary anchor crimping on the large-size side lead to realize the high-altitude temporary anchor crimping construction of the lead;
the method comprises the following steps:
firstly, arranging a strain tower, and lifting a lead into a strain tower cross arm paying-off tackle for carrying out lead lifting;
secondly, installing a special aluminum rope tensioning clamp for temporary tightening at a position A away from the wire hanging points on the two sides of the tension tower, and meanwhile, installing a chain hoist I on the tension tower, and connecting the chain hoist I with the special aluminum rope tensioning clamp to realize the first tightening of the wire;
thirdly, stripping an outer aluminum wire layer of the wire at a position which is away from the pulley by a distance B, and cleaning grease on the steel core of the wire to realize subsequent temporary anchoring of the steel core of the wire;
fourthly, a distance C is measured from left to right on a wire steel core, a first steel core tightener is positioned and installed, a second chain block is installed on the tension tower, and the wire is tightened for the second time through the connection of the second chain block and the first steel core tightener; then, cutting off the lead at the pulley, and sleeving a strain aluminum pipe;
fifthly, a distance D is taken from left to right on a stripped wire steel core at the rear side of the tension aluminum pipe, a second steel core tightener is positioned and installed, a third chain block is installed on the tension tower, and the third wire tightening is realized by connecting the third chain block with the second steel core tightener; then, removing the first steel core wire grip and the second chain hoist which are installed for the first time;
sixthly, winding the stripped outer aluminum wire layer of the wire on the steel core again, sleeving the strain aluminum pipe on the outer aluminum wire layer and pushing forward by a distance E; meanwhile, a first steel core wire grip which is positioned and installed and removed is measured at a distance F from left to right on a steel core of the wire, and a pulley block and a ground grinder are mechanically connected with the first steel core wire grip to pull the first steel core wire grip to tighten the steel core of the wire; then, removing the second steel core wire grip and the third chain block which are installed for the second time, adjusting the sag of the wire to the designed sag by using a pulley set and a ground grinding machine through the first steel core wire grip, and drawing and printing;
seventhly, cutting off the steel core of the lead at the printing position, and crimping the steel core of the lead with a steel anchor and hanging the steel anchor on the strain insulator string; then, removing the first steel core wire tightener installed for the third time, and winding the remaining stripped outer aluminum wire layer of the wire onto the steel core again; finally, pushing the tension aluminum pipe back to the position above the steel anchor, and crimping the tension aluminum pipe on the lead by adopting a back-pressing process;
eighthly, performing adjacent anchor compression joint on the large-size side conductor according to the first step to the seventh step;
and ninthly, removing the special aluminum rope clip on the lead to realize the high-altitude temporary anchor crimping construction of the lead.
2. The high-altitude temporary anchoring and crimping construction method suitable for the gap type heat-resistant capacity-increasing lead according to claim 1, wherein the construction method comprises the following steps: in the second step, the distance A from the wire hanging points on the two sides of the strain tower refers to: at the position 10-15 meters away from the wire hanging points at the two sides of the tension tower.
3. The high-altitude temporary anchoring and crimping construction method suitable for the gap type heat-resistant capacity-increasing lead according to claim 1, wherein the construction method comprises the following steps: in the second step, the first tightening of the wire is realized by connecting the chain hoist I with the special rope tightening clamp for aluminum: the first chain hoist is connected with the special aluminum rope tightening clamp to tighten the wire to 50% -70% of the tension of the tightening wire.
4. The high-altitude temporary anchoring and crimping construction method suitable for the gap type heat-resistant capacity-increasing lead according to claim 1, wherein the construction method comprises the following steps: in the third step, stripping an outer aluminum wire layer of the lead at a position which is a distance B away from the pulley means that: at a distance of 4 meters from the trolley, 6 meters of outer aluminum wire layers were peeled apart.
5. The high-altitude temporary anchoring and crimping construction method suitable for the gap type heat-resistant capacity-increasing lead according to claim 1, wherein the construction method comprises the following steps: in the fourth step, the step of measuring the distance C from left to right on the steel core of the wire and positioning and installing the steel core tightener I means that: a first steel core wire grip is positioned and installed on the steel core of the wire at a distance of 4 meters from left to right.
6. The high-altitude temporary anchoring and crimping construction method suitable for the gap type heat-resistant capacity-increasing lead according to claim 1, wherein the construction method comprises the following steps: in the fourth step, the second tightening of the wire is realized by connecting the chain hoist II with the steel core tightener: the second chain hoist is connected with the steel core tightener to tighten the wire to 105% of the tightening tension.
7. The high-altitude temporary anchoring and crimping construction method suitable for the gap type heat-resistant capacity-increasing lead according to claim 1, wherein the construction method comprises the following steps: in the fifth step, the step of taking the distance D from left to right to position and install the steel core wire grip II means that: a second steel core wire grip is positioned and installed at a distance of 1 m from left to right;
the third tightening of the wire is realized by connecting the chain hoist III with the steel core wire tightener II: the wire is tightened to 105% of the wire tightening tension by connecting the chain hoist III with the steel core wire tightener II.
8. The high-altitude temporary anchoring and crimping construction method suitable for the gap type heat-resistant capacity-increasing lead according to claim 1, wherein the construction method comprises the following steps: in the sixth step, the strain aluminum pipe is sleeved on the outer aluminum wire layer and pushed forward by a distance E, namely: sleeving a strain aluminum pipe on the outer aluminum wire layer and pushing forwards for 2.5 m;
the first steel core wire grip for positioning, installing and removing the distance F from left to right on the steel core of the wire is as follows: a first steel core wire grip which is positioned, installed and removed at a distance of 4 meters is measured from left to right on a steel core of a wire.
9. The high-altitude temporary anchoring and crimping construction method suitable for the gap type heat-resistant capacity-increasing lead according to claim 1, wherein the construction method comprises the following steps: in the sixth step, mechanically connecting the tackle pulley and the ground grinder to the first steel core tightener to pull the first steel core tightener to tighten the steel core of the wire means that: the trolley group and the ground grinder are mechanically connected with the first steel core wire grip to pull the first steel core wire grip to achieve wire grip, so that the stress of the steel core of the wire reaches 110%.
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| JPH11196509A (en) * | 1997-12-26 | 1999-07-21 | Hitachi Cable Ltd | Method for measuring temperature at connections of wire |
| JP2001128325A (en) * | 1999-10-28 | 2001-05-11 | Sanwa Tekki Corp | Wire protective cover of wire anchor clamp |
| CN102097766A (en) * | 2010-12-24 | 2011-06-15 | 绍兴电力局 | Strain-resistant lead hanging process for gap type lead |
| CN102347596A (en) * | 2011-09-22 | 2012-02-08 | 湖北省输变电工程公司 | Method for tensioning and stringing eight split conductors as well as installing accessories |
| CN207061793U (en) * | 2017-06-13 | 2018-03-02 | 国家电网公司 | Anchor crimping platform is faced in a kind of high-altitude |
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2018
- 2018-08-09 CN CN201810901331.0A patent/CN109004576B/en active Active
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