CN112736768A - Method for entering phase electric field in compact line - Google Patents
Method for entering phase electric field in compact line Download PDFInfo
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- CN112736768A CN112736768A CN202110004624.0A CN202110004624A CN112736768A CN 112736768 A CN112736768 A CN 112736768A CN 202110004624 A CN202110004624 A CN 202110004624A CN 112736768 A CN112736768 A CN 112736768A
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- electric field
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- phase electric
- entering
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- 230000005684 electric field Effects 0.000 title claims abstract description 105
- 238000000034 method Methods 0.000 title claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- 241000258920 Chilopoda Species 0.000 claims abstract description 40
- 239000004020 conductor Substances 0.000 claims abstract description 27
- 229910000746 Structural steel Inorganic materials 0.000 claims abstract description 25
- 230000009194 climbing Effects 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 2
- 239000012212 insulator Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000003416 augmentation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- H—ELECTRICITY
- 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
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/34—Ladders attached to structures, such as windows, cornices, poles, or the like
- E06C1/36—Ladders suspendable by hooks or the like
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/381—Ladders with rungs or treads attached only to one rigid longitudinal member
Abstract
The invention discloses a method for entering a middle phase electric field of a compact line, which adopts an entering side phase electric field tool and an entering middle phase electric field tool; the side-phase electric field entering tool is an insulating flat ladder and an assembly part of an angle steel fixture and a wire hook, wherein the two ends of the insulating flat ladder are respectively connected with the insulating flat ladder. The middle phase electric field tool is an assembly part of an insulating centipede ladder and an angle iron hook and an insulating hanging basket which are respectively connected with two ends of the insulating centipede ladder, and the insulating hanging basket is connected with two bundles of insulating control ropes. The working personnel firstly install the side phase electric field tool, then fix the angle steel hook of the middle phase electric field tool on the side phase conductor by the tool, and then enter the middle phase electric field for operation by the insulating hanging basket. The length of the centipede body can be adjusted as required, the centipede ladder has a smaller transverse volume, is a rigid ladder, is not only convenient for the descending direction of an insulating hanging basket to control, but also can be used for climbing and adjusting the operation position along the centipede ladder by operating personnel, ensures the installation distance in the operation process, is flexible to operate, and improves the safety of live working.
Description
Technical Field
The invention belongs to the field of live-wire work, and particularly relates to a method for entering a phase electric field in a compact line.
Background
When the compact line live line operation is carried out, the electric gap is small, and the mode that an insulating flat ladder swings in and a soft body swings in is often adopted when an operator enters a middle phase electric field. However, the insulating flat ladder used at the moment is long (more than nine meters), a great deal of time is consumed for fixing and dismounting, the operation on the tower is inconvenient, the length adjustment cannot be carried out, and the universality is not strong; the rope ladder has certain defects in the aspects of safety distance guarantee, operation flexibility and the like, and the safety risk of live working is increased.
Disclosure of Invention
The invention aims to provide a method for enabling equipotential operating personnel to safely enter a middle-phase electric field by matching a flat ladder and a centipede ladder, which is safe and flexible to operate and improves the safety of live-line operation.
The method for entering the middle phase electric field of the compact line provided by the invention adopts two kinds of tools for entering the side phase electric field and tools for entering the middle phase electric field; the side-phase electric field entering tool is an insulating flat ladder and an assembly part of an angle steel fixture and a wire hook which are respectively connected with the two ends of the insulating flat ladder; the middle phase electric field tool is an assembly part of an insulated centipede ladder and an angle iron hook and an insulated hanging basket which are respectively connected with two ends of the insulated centipede ladder, and the insulated hanging basket is connected with two bundles of insulated control ropes; entering the electric field comprises the following steps:
(1) personnel climbing tower
A guardian, an equipotential operator and a group of ground potential operators on the tower carry the insulation transfer rope and the pulley to climb the tower, the pulley and the insulation transfer rope are fixed after the ground potential operators reach a designated position on one side of the tower body, and the other group of ground potential operators climb to a designated position on the other side of the tower body;
(2) tool for transmitting into side phase electric field
The ground matching personnel and the tower operating personnel are matched with each other to transmit the tool entering the side phase electric field to the tower through the insulated transmission rope;
(3) tool for installing and entering side phase electric field
Hooking a conductor hook entering the side phase electric field tool with a side phase conductor, and fixing an angle steel fixture on a tower material when the insulating flat ladder is in a horizontal state;
(4) the equipotential operating personnel enter the side phase electric field along the insulating flat ladder;
(5) tool for transmitting into middle phase electric field
The ground matching personnel and the tower operating personnel are matched with each other to transmit the tools entering the middle phase electric field to the tower through the insulating transmission rope;
(6) installation and entering middle phase electric field tool
An operator on the tower and a ground operator cooperate to enable the angle steel hook connecting end of the centipede ladder to incline towards an equipotential operator on the insulating flat ladder, the equipotential operator grasps the angle steel hook to be fixed on the side phase conducting wire, and meanwhile, one bundle of insulating control ropes of the insulating hanging basket is transmitted to the earth potential operator on the other side of the tower body;
(7) exiting side phase electric field
After the tool enters the middle phase electric field and is installed, the original way of the equipotential operating personnel on the insulating flat ladder returns to the tower body;
(8) into the middle phase electric field
The equipotential operators enter the insulating hanging basket and wear the rear protective rope, and the equipotential operators on the two sides of the tower body enable the insulating hanging basket to descend through the insulating control rope and simultaneously approach the middle phase lead to enter the middle phase electric field;
(9) electric field in exiting middle phase
After the equipotential operators complete the operation, the potential operators on the tower pull the hanging basket to the position below the middle phase conductor through the insulating control rope, the equipotential operators return to the hanging basket again and grasp the middle phase conductor, the potential operators on the tower body loosen the insulating control rope, the equipotential operators loosen the middle phase conductor to withdraw from the electric field, meanwhile, the potential operators on the two sides of the tower body cooperatively pull the insulating control rope to pull the hanging basket to be close to the tower body, and the equipotential operators withdraw from the insulating hanging basket to the tower body;
(10) demolition tool
The equipotential operating personnel enter the side phase electric field again through the flat ladder, the angle steel fixture of the tool and the instrument entering the middle phase electric field is detached from the side phase lead, and the tool and the instrument are lifted and lowered to the ground by cooperating with the earth potential operating personnel and the ground cooperating personnel on the tower;
the equipotential operating personnel returns to the tower along the insulating flat ladder exit side phase electric field, cooperates with the earth potential operating personnel on the tower to separate the angle iron hook from the side phase conducting wire, and then cooperates with ground cooperating personnel to lift the tool and lower the tool to the ground;
(11) people get off the tower
The operating personnel on the tower demolish the coaster, carry insulating transfer rope lower tower.
In one embodiment of the method, the upper end of the insulating flat ladder is connected with an angle iron fixture through a universal joint, so that the angle iron fixture can swing back and forth and left and right, and the lower end of the insulating flat ladder is connected with a wire hook.
In one embodiment of the above method, the universal joint comprises a ladder head connecting seat and a fixture connecting seat which are hinged with each other, the ladder head connecting seat comprises two clamping plates which are arranged in parallel along the width direction of the insulating flat ladder, an upper convex arc part is arranged at the middle position of the upper side of the clamping plates in the length direction, and the fixture connecting seat comprises a U-shaped body with an upward opening and an arc-shaped hinged plate connected with the middle part of the lower side of a bottom plate of the fixture connecting seat; the arc-shaped hinged plate of the fixture connecting seat is hinged through a pin shaft after being inserted between the two clamping plates of the ladder head connecting seat, and the arc-shaped hinged plate can swing left and right around the pin shaft.
In one embodiment of the method, the insulating flat ladder comprises standard joints and non-standard joints which are connected through metal sleeves and bolts, metal connectors are symmetrically connected to two ends of the insulating flat ladder, each metal connector comprises a ladder head sleeve and a connecting lug plate extending out of one end of the ladder head sleeve and used for being connected with the universal joint and the wire hook respectively, the connecting lug plates of the upper metal connectors are inserted between the clamping plates of the ladder head connecting seats and then hinged through pin shafts, and the insulating flat ladder and the ladder head connecting seats can swing left and right.
In one embodiment of the method, the angle steel fixture comprises a bottom plate and hook arms symmetrically connected to two ends of the upper side of the bottom plate, the bottom plate is a rectangular thick plate in a long strip shape, a U-shaped clamping groove is formed in the upper end of each hook arm, and a bolt extending into the notch is connected to the outer wall of each U-shaped clamping groove; two ends of the lower side of the bottom plate are symmetrically connected with double lug plates; the upper parts of the two side arms of the U-shaped body of the fixture connecting seat are inserted between the double lug plates and then hinged through a pin shaft, and the angle steel fixture and the U-shaped body can swing back and forth around the pin shaft.
In one embodiment of the above method, the wire hook comprises a hook and a yoke plate, the lower end of the hook is provided with a threaded head, and the lower ends of the two hooks penetrate through the yoke plate and the lower end metal connector of the insulating flat ladder to be connected with the connecting hole on the lug plate and then are locked by a butterfly nut.
In one embodiment of the above method, the insulating centipede ladder comprises an insulating rod and climbing rods which are connected with each other in a staggered manner on two sides in the length direction of the insulating rod, the length of the insulating centipede ladder comprises a fixed length section and a length adjustable section, the length adjustable section comprises a lower fixed length section and an extended section which is in threaded connection with the upper end of the lower fixed length section, the upper end of the extended section is connected with the lower end of the fixed length section through a threaded sleeve, the lower end of the extended section is connected with the lower fixed length section through threads, and the outer wall of the threaded sleeve is provided with a force applying ring which is.
In one implementation mode of the method, the upper end of the insulating centipede ladder is connected with the angle steel hook through an upper connector, the upper connector comprises a ladder head connector, a middle connector and an angle steel hook connector which are sequentially hinged through a pin shaft, the ladder head connector comprises a ladder head sleeve and hinge lug plates at the upper end of the ladder head sleeve, the middle connector comprises a horizontal plate and hinge lug plates at the upper side and the lower side of the horizontal plate, and the angle steel hook connector comprises a connecting column and hinge lug plates at the lower end of the connecting column; the inner diameter of the ladder head sleeve is matched with the outer diameter of the insulating rod, the ladder head sleeve and the insulating rod are connected through threads or radial pin shafts, and a threaded hole is formed in the axial center of the connecting column.
In one embodiment of the above method, the angle iron hook comprises a bottom plate and hook arms symmetrically connected to two ends of the upper side of the bottom plate, the bottom plate is a rectangular thick plate with a long strip shape, the upper end of each hook arm is provided with a U-shaped hanging groove, and the outer wall of each U-shaped hanging groove is connected with a bolt extending into the corresponding groove opening; and a bolt mounting hole is formed in the middle of the bottom plate and is in threaded connection with a connecting column of the angle steel hook connector through a bolt.
In one embodiment of the above method, the lower end of the insulating centipede ladder is connected with the insulating hanging basket through a lower connector, the lower connector comprises a ladder tail sleeve and a connecting ring on the outer wall of the ladder tail sleeve, and an insulating rope on the upper end of the insulating hanging basket is connected with the connecting ring through a buckled hanging ring.
The invention adopts the entering side phase electric field tool to realize the installation of the entering middle phase electric field tool, firstly, the entering side phase electric field tool is horizontally between the tower body and the side phase conductor, the conductor hook hooks the side phase conductor, and the angle iron fixture is fixed on the tower material, and the insulating flat ladder is in a horizontal state, thereby having convenient installation, reliable fixation and shorter length. Equipotential operating personnel follow insulating flat ladder and get into limit looks electric field, equipotential operating personnel coordinate other operating personnel will get into in the angle steel hook of electric field multiplexer utensil and be fixed in on the limit looks wire, then equipotential operating personnel on the insulating flat ladder return on the tower, get into in the insulating hanging flower basket of electric field multiplexer utensil again, make insulating hanging flower basket descend to near the electric field operation in the phase of getting into through insulating control rope by other operating personnel of tower body both sides. According to the process, through the arrangement of the side phase electric field tools, equipotential operators can fix the angle iron hooks of the middle phase electric field tools on the side phase conducting wires by using the insulating flat ladder as a support, and then safely control the insulating hanging baskets by the operators on two sides of the tower body to descend to the positions near the middle phase conducting wires to enter the middle phase electric field. The length of the centipede body can be adjusted as required, the centipede ladder has a smaller transverse volume, is a rigid ladder, is not only convenient for controlling the descending direction of an insulating hanging basket, but also can be used for adjusting the operation position along the climbing of the centipede ladder by equipotential operating personnel, ensures the installation distance in the operation process, is flexible to operate and improves the safety of live working.
Drawings
Fig. 1 is a schematic structural diagram of an incoming side-phase electric field tool according to an embodiment of the present invention.
Fig. 2 is an enlarged schematic view of a portion a in fig. 1.
Fig. 3 is an enlarged schematic view of a portion B in fig. 1.
Fig. 4 is a schematic structural diagram of the tool for entering a middle phase electric field according to the embodiment.
Fig. 5 is an enlarged schematic view of the portion C in fig. 4.
Fig. 6 is an enlarged schematic view of a portion D in fig. 4.
Fig. 7 is an enlarged schematic view of a portion E in fig. 4.
Fig. 8 is a schematic view of the installation of the incoming side phase electric field tool.
FIG. 9 is a schematic diagram of an equipotential operator entering a side-phase electric field.
Fig. 10 is a schematic diagram of an equipotential operator entering a mid-phase electric field (tool entering a side-phase electric field not shown).
Detailed Description
The invention discloses a method for entering a middle phase electric field of a compact circuit, which adopts an entering side phase electric field tool and an entering middle phase electric field tool.
As can be seen from fig. 1 to 3, the tool for entering the side phase electric field comprises an insulating flat ladder 1, an angle iron fixture 2 and a wire hook 3. The angle iron clamp 2 and the wire hook 3 are respectively connected to two ends of the insulating horizontal ladder 1.
The two ends of the insulating flat ladder 1 are symmetrically fixed with metal connectors 11, and each metal connector comprises a ladder head sleeve and a connecting lug plate extending out of the upper end of the ladder head sleeve.
The length of the insulating flat ladder 1 can be spliced by standard sections and non-standard sections, and the standard sections and the non-standard sections are fixedly connected through metal sleeves and bolts.
The metal connector 11 of the upper end is connected with a universal joint 4, and the universal joint 4 comprises a ladder head connecting seat 41 and a fixture connecting seat 42 which are hinged with each other.
The ladder head connecting seat 41 comprises two clamping plates which are arranged in parallel along the width direction of the insulating flat ladder 1, and an upper convex arc part is arranged at the middle position of the upper side of the clamping plates in the length direction. The fixture connecting base 42 includes a U-shaped body with an upward opening and an arc-shaped hinge plate connected to the middle of the lower side of the bottom plate. The arc-shaped hinged plate of the fixture connecting seat 42 is inserted between the two clamping plates of the ladder head connecting seat 41 and then is hinged through a pin shaft, and the arc-shaped hinged plate can swing left and right around the pin shaft.
When the ladder head connecting seat 41 of the universal joint 4 is connected with the metal connector 11, the ear plates of the metal connector 11 are inserted between the two ear plates of the ladder head connecting seat 41 and then hinged through the pin shaft.
The angle iron fixture 2 comprises a bottom plate 21 and hook arms 22 symmetrically connected to two ends of the upper side of the bottom plate, the bottom plate 21 is a rectangular thick plate in a long strip shape, a U-shaped hanging groove is formed in the upper end of each hook arm 22, a bolt (not shown in the figure) stretching into a notch is connected to the outer wall of each U-shaped hanging groove, and double lug plates are symmetrically connected to two ends of the lower side of the bottom plate 21.
When the angle iron fixture 2 is connected with the fixture connecting seat 42 of the universal joint 4, the upper parts of the two side arms of the U-shaped body of the fixture connecting seat 42 are inserted between the double ear plates at the lower side of the bottom plate of the angle iron fixture 2 and then hinged through the pin shaft, and the angle iron fixture can swing back and forth around the pin shaft, so that the angle iron fixture can be suitable for fixing tower bodies with different structures.
The fixture connecting base 42 can swing left and right around the hinge pin of the fixture connecting base 41, and the angle iron fixture 2 can swing back and forth around the hinge pin of the fixture connecting base 42, so that the direction of the angle iron fixture 2 can be flexibly adjusted, and the angle iron fixture can be suitable for being fixed on tower materials with different structures.
After the angle steel fixture 2 is hung on an angle steel or a channel steel structural member on the tower body through the U-shaped hanging groove on the angle steel fixture, the bolt connected through the side wall of the U-shaped hanging groove is locked and positioned, and the operation safety is ensured.
As can be seen from fig. 1 and 3, the metal connector 11 at the lower end of the insulating horizontal ladder 1 is connected with the wire hook 3. The wire hook 3 comprises a hook 31 and a yoke plate 32, two ends of the yoke plate 32 are arranged on one side of the ear plates of the two metal connectors, the lower ends of the two hooks 31 are provided with threaded heads, and the lower ends of the two hooks penetrate through mounting holes on the yoke plate and the ear plates and are locked through butterfly nuts, so that the hook 31 and the insulating flat ladder 1 are in a vertical state.
As can be seen from fig. 4 to 7, the tool for entering the middle phase electric field comprises an insulating centipede ladder 5, an angle iron hook 6 and an insulating hanging basket 7.
The insulating centipede ladder 5 comprises an insulating rod 51 and climbing rods 52 which are connected with both sides in the length direction in a staggered manner. The length of insulating centipede ladder includes length fixing section and length adjustable section, and length adjustable section includes the length fixing section of lower part and its upper end threaded connection's extension section, and the upper end of extension section is connected through threaded sleeve 53 with the lower extreme of length fixing section, passes through threaded connection between lower extreme and the lower part length fixing section, and threaded sleeve's outer wall is provided with the thrust augmentation ring 54 that is convenient for rotate threaded sleeve.
The upper end of the insulating centipede ladder 5 is connected with the angle steel hook 6 through an upper connector 8, and the upper connector 8 comprises a ladder head connector 81, a middle connector 82 and an angle steel hook connector 83 which are hinged through a pin shaft in sequence. The ladder head connector 81 comprises a ladder head sleeve and a hinge lug plate at the upper end of the ladder head sleeve, the middle connector 82 comprises a horizontal plate and hinge lug plates at the upper side and the lower side of the horizontal plate, and the angle steel hook connector 83 comprises a connecting column and a hinge lug plate at the lower end of the connecting column; the inner diameter of the ladder head sleeve is matched with the outer diameter of the insulating rod, the ladder head sleeve and the insulating rod are connected through threads or radial pin shafts, and a threaded hole is formed in the axial center of the connecting column.
The angle steel hook 6 comprises a bottom plate 61 and hook arms 62 symmetrically connected to the two ends of the upper side of the bottom plate, the bottom plate is a long strip-shaped rectangular thick plate, the upper ends of the hook arms are provided with U-shaped hanging grooves, and the outer walls of the U-shaped hanging grooves are connected with bolts 63 extending into the notches; the middle position of the bottom plate is provided with a bolt mounting hole which is in threaded connection with a connecting column of the angle steel hook connecting joint 83 through a bolt. The angle steel hook 6 can swing back and forth and left and right through the upper connector 8, so that the position can be conveniently adjusted to hook the wire.
The lower end of the insulating centipede ladder 1 is connected with an insulating hanging basket 7 through a lower connector 9. Lower connector 9 includes the go-between of terraced tail sleeve pipe and its outer wall, and terraced tail sheathed tube lower extreme is connected with action bars 10, and operation personnel accessible action bars 10 carries out the small distance adjustment to the position of insulating hanging flower basket, and the insulating rope of insulating hanging flower basket upper end passes through buckled link and is connected with the go-between.
As can be seen from fig. 8 to 10 after the combination, the specific steps of using the two tools to enter the phase electric field in the compact circuit are as follows:
(1) tool assembly
Entering into a side phase electric field tool for assembly: ground cooperation personnel respectively assemble an angle steel clamp and a wire hook at two ends of the insulating horizontal ladder on the ground;
and (3) assembling tools and instruments in a middle phase electric field: when waiting for an equipotential operator to enter an edge phase electric field, ground coordinators respectively assemble an angle steel hook and an insulating hanging basket on the ground at two ends of the insulating centipede ladder, and tie two bundles of insulating control ropes on the hanging basket.
(2) Personnel climbing tower
After wearing safety belts, full shielding clothes, safety ropes and safety belts, an on-tower guardian, an equipotential operator and a group of earth potential operators carry insulating transfer ropes and a pulley to climb the tower, and when reaching a proper position on the left side of a tower body, the insulating transfer ropes and the pulley are tied on different tower materials, the pulley is fixed at a proper position on the tower materials, and then the insulating transfer ropes are fixed on the pulley; another group of ground potential operators step onto the right side of the tower body at a proper position.
(3) Tool for transmitting into side phase electric field
The ground cooperation personnel on the left side of the tower body and the operating personnel on the tower are mutually matched, and the entering side phase electric field tools and instruments are transmitted to the proper positions on the tower in a mode of being connected with the hanging hook and the insulating transmission rope through the jack.
(4) Tool for installing and entering side phase electric field
The method comprises the following steps that an upper-tower ground potential operator and an equipotential operator are matched, an angle iron fixture is grasped, an insulating transfer rope is lowered, a conductor hook hooks an upper-side phase conductor, and then the angle iron fixture is locked and fixed on a tower material through a bolt when an insulating horizontal ladder is in a horizontal state;
(6) the operator enters the side phase electric field
The equipotential operating personnel wear the backup protection rope, slowly approach the side phase conducting wire along the flat ladder in a sitting posture, reach the position about 0.4m away from the side phase conducting wire, and quickly reach the hand to grasp the side phase conducting wire to form equipotential.
(7) Transmitted into a tool and installed in a middle phase electric field
After the equipotential operation personnel got into the limit looks electric field, ground cooperation personnel transmitted insulating centipede ladder to the suitable position in left side on the tower through insulating transmission rope, the hanging flower basket end of centipede ladder is held to left side earth potential operation personnel on the tower, through with ground cooperation personnel through insulating transmission rope with the angle steel hook connection end of centipede ladder to the equipotential operation personnel on the insulating flat ladder slope, treat that the centipede ladder slopes to certain angle, equipotential operation personnel seize the centipede ladder and hook the limit looks wire with the angle steel hook, and pin the wire through the bolt on the angle steel hook, transmit a bundle of insulating control rope of insulating hanging flower basket ligature for another group's earth potential personnel on the body right side of the tower simultaneously, well electric field multiplexer utensil installation is accomplished.
(8) Into the middle phase electric field
After the insulating centipede ladder is installed in place, equipotential personnel on the insulating flat ladder return to the tower on the original way, then enter the insulating hanging basket and take the back to protect the rope, another group of earth potential personnel on the right side of the tower body pass through the insulating control rope with insulating hanging basket tower body left side, simultaneously the earth potential operation personnel on the left side of the tower body also strain another bundle of insulating control rope, control the descent speed of hanging basket. The equipotential operator needs to contract the body as much as possible in the hanging basket, the heels of the two legs are crossed, when the insulating hanging basket is close to the middle phase conductor, the distance of about 0.5m from the middle phase conductor reports the entering of an electric field to a guardian on the tower, and the conductor is quickly grasped at a position of about 0.4m from the conductor after permission of the guardian is obtained. If the centipede ladder is too long, the insulating hanging basket is firstly pulled to the lower part of the middle phase conductor, and equipotential operating personnel can enter an electric field from a proper position in a mode of climbing the centipede ladder.
(9) Electric field in exiting middle phase
After the operation is completed to the equipotential operating personnel, the earth potential operating personnel on the right side of the tower body pull the insulating hanging basket to the lower side of the middle-phase conductor through the insulating control rope, the equipotential operating personnel sit back into the insulating hanging basket again on the premise of keeping the insulating hanging basket from being disconnected with the side-phase conductor, and hang the backup protection rope, remove the double-safety belt of the conductor end, the double-safety belt is fixed on the insulating hanging basket, the middle-phase conductor is gripped by one hand, then the earth potential operating personnel on the right side of the tower body slowly loosen the insulating control rope, about 0.4m away from the middle-phase conductor, the equipotential operating personnel apply for withdrawing the electric field to the guardian on the tower, the middle-phase conductor is loosened rapidly after obtaining the approval, the earth potential operating personnel on the two sides of the tower body cooperate to pull the insulating hanging basket to the left side of the.
(10) Demolition tool
The equipotential operating personnel reenter the side phase electric field through the insulating flat ladder, remove the angle steel hook at the upper end of the theater centipede ladder first, and place the insulating centipede ladder slowly to the ground after being hoisted by cooperating with the earth potential operating personnel and ground coordinating personnel;
and the equipotential operating personnel on the insulating flat ladder returns to the tower, and then the equipotential operating personnel and ground potential operating personnel cooperate to lift the flat ladder and slowly lower the flat ladder to the ground.
(11) People get off the tower
The personnel on the tower demolish the coaster, carry insulating transfer rope lower tower.
Claims (10)
1. A method for entering a compact line middle phase electric field is characterized in that two kinds of tools for entering a side phase electric field and tools for entering a middle phase electric field are adopted;
the side-phase electric field entering tool is an insulating flat ladder and an assembly part of an angle steel fixture and a wire hook which are respectively connected with the two ends of the insulating flat ladder;
the middle phase electric field tool is an assembly part of an insulated centipede ladder and an angle iron hook and an insulated hanging basket which are respectively connected with two ends of the insulated centipede ladder, and the insulated hanging basket is connected with two bundles of insulated control ropes;
entering the electric field comprises the following steps:
(1) personnel climbing tower
A guardian, an equipotential operator and a group of ground potential operators on the tower carry the insulation transfer rope and the pulley to climb the tower, the pulley and the insulation transfer rope are fixed after the ground potential operators reach a designated position on one side of the tower body, and the other group of ground potential operators climb to a designated position on the other side of the tower body;
(2) tool for transmitting into side phase electric field
The ground matching personnel and the tower operating personnel are matched with each other to transmit the tool entering the side phase electric field to the tower through the insulated transmission rope;
(3) tool for installing and entering side phase electric field
Hooking a conductor hook entering the side phase electric field tool with a side phase conductor, and fixing an angle steel fixture on a tower material when the insulating flat ladder is in a horizontal state;
(4) the equipotential operating personnel enter the side phase electric field along the insulating flat ladder;
(5) tool for transmitting into middle phase electric field
The ground matching personnel and the tower operating personnel are matched with each other to transmit the tools entering the middle phase electric field to the tower through the insulating transmission rope;
(6) installation and entering middle phase electric field tool
An operator on the tower and a ground operator cooperate to enable the angle steel hook connecting end of the centipede ladder to incline towards an equipotential operator on the insulating flat ladder, the equipotential operator grasps the angle steel hook to be fixed on the side phase conducting wire, and meanwhile, one bundle of insulating control ropes of the insulating hanging basket is transmitted to the earth potential operator on the other side of the tower body;
(7) exiting side phase electric field
After the tool enters the middle phase electric field and is installed, the original way of the equipotential operating personnel on the insulating flat ladder returns to the tower body;
(8) into the middle phase electric field
The equipotential operators enter the insulating hanging basket and wear the rear protective rope, and the equipotential operators on the two sides of the tower body enable the insulating hanging basket to descend through the insulating control rope and simultaneously approach the middle phase lead to enter the middle phase electric field;
(9) electric field in exiting middle phase
After the equipotential operators complete the operation, the potential operators on the tower pull the hanging basket to the position below the middle phase conductor through the insulating control rope, the equipotential operators return to the hanging basket again and grasp the middle phase conductor, the potential operators on the tower body loosen the insulating control rope, the equipotential operators loosen the middle phase conductor to withdraw from the electric field, meanwhile, the potential operators on the two sides of the tower body cooperatively pull the insulating control rope to pull the hanging basket to be close to the tower body, and the equipotential operators withdraw from the insulating hanging basket to the tower body;
(10) demolition tool
The equipotential operating personnel enter the side phase electric field again through the flat ladder, the angle steel fixture of the tool and the instrument entering the middle phase electric field is detached from the side phase lead, and the tool and the instrument are lifted and lowered to the ground by cooperating with the earth potential operating personnel and the ground cooperating personnel on the tower;
the equipotential operating personnel returns to the tower along the insulating flat ladder exit side phase electric field, cooperates with the earth potential operating personnel on the tower to separate the angle iron hook from the side phase conducting wire, and then cooperates with ground cooperating personnel to lift the tool and lower the tool to the ground;
(11) people get off the tower
The operating personnel on the tower demolish the coaster, carry insulating transfer rope lower tower.
2. The method of entering a phase electric field in a compact line as recited in claim 1, wherein: the upper end of the insulating flat ladder is connected with an angle iron fixture through a universal joint, so that the angle iron fixture can swing front and back, left and right, and the lower end of the insulating flat ladder is connected with a wire hook.
3. The method of entering a phase electric field in a compact line as recited in claim 2, wherein: the universal joint comprises a ladder head connecting seat and a fixture connecting seat which are hinged with each other, the ladder head connecting seat comprises two clamping plates which are arranged in parallel along the width direction of the insulating flat ladder, an upper convex arc-shaped part is arranged at the middle position of the upper side of the clamping plates in the length direction, and the fixture connecting seat comprises a U-shaped body with an upward opening and an arc-shaped hinged plate connected with the middle part of the lower side of a bottom plate of the U-shaped body; the arc-shaped hinged plate of the fixture connecting seat is hinged through a pin shaft after being inserted between the two clamping plates of the ladder head connecting seat, and the arc-shaped hinged plate can swing left and right around the pin shaft.
4. A method of entering a phase electric field in a compact line, as claimed in claim 3, wherein: the insulating flat ladder includes that the standard through metal sleeve and bolted connection connects with non-standard festival, and the both ends symmetric connection of insulating flat ladder has the metal connector, and the metal connector includes the engaging lug board that ladder head sleeve pipe and its one end stretched out, is used for connecting respectively universal joint and wire hook, the engaging lug board of upper end metal connector insert through the round pin axle is articulated after between the grip block of ladder head connecting seat, insulating flat ladder and the equal horizontal hunting of ladder head connecting seat.
5. A method of entering a phase electric field in a compact line, as claimed in claim 3, wherein: the angle steel fixture comprises a bottom plate and hook arms symmetrically connected to two ends of the upper side of the bottom plate, the bottom plate is a rectangular thick plate in a long strip shape, a U-shaped clamping groove is formed in the upper end of each hook arm, and a bolt extending into the notch is connected to the outer wall of each U-shaped clamping groove; two ends of the lower side of the bottom plate are symmetrically connected with double lug plates; the upper parts of the two side arms of the U-shaped body of the fixture connecting seat are inserted between the double lug plates and then hinged through a pin shaft, and the angle steel fixture and the U-shaped body can swing back and forth around the pin shaft.
6. The method of entering a phase electric field in a compact line of claim 4, wherein: the wire hook comprises a hook and a yoke plate, the lower end of the hook is provided with a threaded head, and the lower ends of the two hooks penetrate through the yoke plate and a connecting hole in the lower end metal connector of the insulating flat ladder and then are locked through a butterfly nut.
7. The method of entering a phase electric field in a compact line as recited in claim 1, wherein: insulating centipede ladder includes insulator spindle and its length direction both sides staggered connection's climbing pole, and the length of insulating centipede ladder is including deciding long section and length adjustable section, and length adjustable section includes the lower part and decides long section and its upper end threaded connection's extension section, and the upper end of extension section passes through threaded sleeve with the lower extreme of deciding the long section and is connected, passes through threaded connection between lower extreme and the lower part and decides the long section, and threaded sleeve's outer wall is provided with the stress ring of being convenient for rotate the threaded sleeve.
8. The method of entering a phase electric field in a compact line as recited in claim 7, wherein: the upper end of the insulating centipede ladder is connected with the angle steel hook through an upper connector, the upper connector comprises a ladder head connector, a middle connector and an angle steel hook connector which are sequentially hinged through a pin shaft, the ladder head connector comprises a ladder head sleeve and hinge lug plates at the upper end of the ladder head sleeve, the middle connector comprises a horizontal plate and hinge lug plates at the upper side and the lower side of the horizontal plate, and the angle steel hook connector comprises a connecting column and hinge lug plates at the lower end of the connecting column; the inner diameter of the ladder head sleeve is matched with the outer diameter of the insulating rod, the ladder head sleeve and the insulating rod are connected through threads or radial pin shafts, and a threaded hole is formed in the axial center of the connecting column.
9. The method of entering a phase electric field in a compact line as recited in claim 8, wherein: the angle steel hook comprises a bottom plate and hook arms symmetrically connected to two ends of the upper side of the bottom plate, the bottom plate is a rectangular thick plate in a long strip shape, a U-shaped hanging groove is formed in the upper end of each hook arm, and a bolt extending into the notch is connected to the outer wall of each U-shaped hanging groove; and a bolt mounting hole is formed in the middle of the bottom plate and is in threaded connection with a connecting column of the angle steel hook connector through a bolt.
10. The multi-functional insulating centipede ladder for live working of power transmission lines as claimed in claim 1, wherein: the lower extreme of insulating centipede ladder is connected through lower connector insulating hanging flower basket, lower connector include the go-between of ladder tail sleeve pipe and its outer wall, and the insulating rope of insulating hanging flower basket upper end passes through the buckled link and is connected with the go-between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110004624.0A CN112736768A (en) | 2021-01-04 | 2021-01-04 | Method for entering phase electric field in compact line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110004624.0A CN112736768A (en) | 2021-01-04 | 2021-01-04 | Method for entering phase electric field in compact line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112736768A true CN112736768A (en) | 2021-04-30 |
Family
ID=75589657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110004624.0A Pending CN112736768A (en) | 2021-01-04 | 2021-01-04 | Method for entering phase electric field in compact line |
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| Country | Link |
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| CN (1) | CN112736768A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856408A (en) * | 2022-04-27 | 2022-08-05 | 国网山东省电力公司青岛供电公司 | Folding arm ladder for equipotential live working of power transmission line and use method |
| WO2022268820A1 (en) * | 2021-06-22 | 2022-12-29 | Stahlkontor Gmbh & Co. Kg | Ladder and ladder set |
-
2021
- 2021-01-04 CN CN202110004624.0A patent/CN112736768A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022268820A1 (en) * | 2021-06-22 | 2022-12-29 | Stahlkontor Gmbh & Co. Kg | Ladder and ladder set |
| CN114856408A (en) * | 2022-04-27 | 2022-08-05 | 国网山东省电力公司青岛供电公司 | Folding arm ladder for equipotential live working of power transmission line and use method |
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