CN113315025B - Live overhaul operation method for helicopter - Google Patents
Live overhaul operation method for helicopter Download PDFInfo
- Publication number
- CN113315025B CN113315025B CN202110504816.8A CN202110504816A CN113315025B CN 113315025 B CN113315025 B CN 113315025B CN 202110504816 A CN202110504816 A CN 202110504816A CN 113315025 B CN113315025 B CN 113315025B
- Authority
- CN
- China
- Prior art keywords
- ground wire
- helicopter
- wire connecting
- lead
- connecting equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Electric Cable Installation (AREA)
Abstract
The invention discloses a live-line maintenance operation method for a helicopter, which comprises the following steps: s1, preparing in an early stage; s2, work permission is carried out; s3, checking before taking off; s4, installing a lead and ground wire connecting device; s5, checking before lifting off; s6, flying to an operation place; s7, enabling the helicopter hanging guide and ground wire connecting equipment to enter a working position; s8, developing maintenance projects; s9, returning the helicopter; and S10, finishing the work. The invention promotes live working personnel to deeply know live working technology, safety risk points and control measures of a helicopter lead and ground wire connection equipment method, and provides a working method and a matched tool suitable for live overhaul of a helicopter; the maintenance personnel are promoted to further absorb the current extra-high voltage live working maintenance technology and experience, the helicopter live working maintenance operation flow is standardized, the safety and the overall operation capacity of the operation are improved, and the reference significance is provided for the establishment of helicopter live working maintenance line measures.
Description
Technical Field
The invention relates to a live line maintenance operation method, and belongs to the technical field of power transmission line maintenance.
Background
The live overhaul technology of the helicopter is a method for completing a line overhaul task by directly conveying maintainers to an operation site by the helicopter or indirectly conveying the maintainers to the operation site by a sling. The ultra-high voltage power grid is in a core position in the whole national power grid, and the operation and maintenance work of the ultra-high voltage power grid has very important significance for ensuring the safe, stable and reliable operation of the ultra-high voltage power grid and even the whole national power grid transmission line. The particularity of the extra-high voltage line, the line height and the inconvenience of the conventional maintenance mode are realized, so that the live-line maintenance operation of a helicopter is necessary.
At present, according to the development trend of foreign helicopter live working technology, the method mainly comprises two major operation methods, namely platform method live working, suspension method live working and the like. The suspension method is divided into two processes, namely a sling method and a lead and ground wire connection equipment method according to different suspended objects.
The sling method live working of the helicopter is an operation mode that the helicopter uses a working hook and an insulating rope hung under the belly to throw operating personnel and tool materials onto a power line for live maintenance, and then withdraws the personnel and the residual tool materials after the live maintenance is finished.
The live working of the helicopter by a lead and ground wire connecting device method is an operating mode that the helicopter utilizes a working hook and a sling system which are hung under the belly of the helicopter and lead and ground wire connecting devices (slings) to throw operating personnel and tool materials loaded on the lead and ground wire connecting devices together with the lead and ground wire connecting devices on a power line for live maintenance, and then withdraws the lead and ground wire connecting devices together with the personnel and the rest tool materials after the live working is finished.
At present, no reasonable and efficient operation method which is suitable for an extra-high voltage line exists in the live overhaul of the helicopter; and moreover, the existing lead and ground wire connecting equipment does not have a functional module which takes the lead and ground wire connecting equipment into consideration comprehensively according to various factors such as the lead splitting form of the extra-high voltage line, the space size occupied by the operation of maintenance operators and tools, the connecting mode of the lead and ground wire connecting equipment and slings and the like.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a live-line maintenance operation method, promote live-line operators to deeply know live-line operation technology, safety risk points and control measures of a helicopter lead and ground wire connection equipment method, and provide operation lead and ground wire connection equipment and matched tools suitable for live-line maintenance of a helicopter; promote the maintainer further to absorb current extra-high voltage live working maintenance technique and experience, standardize the helicopter live working maintenance operation flow, promote the security and the whole operation ability of operation, it is significant to reference to this back helicopter live working maintenance circuit measure to formulate.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a live-line repair operation method comprises the following steps:
s1, preparing in an early stage; s2, work permission is carried out; s3, checking before taking off; s4, hanging a lead and ground wire connecting device; s5, checking before lifting off; s6, flying to an operation place; s7, enabling the helicopter hanging guide and ground wire connecting equipment to enter a working position; s8, developing a maintenance subject; s9, returning the helicopter; and S10, finishing the work.
As a further improvement of the present invention, the preliminary preparation includes the following:
checking a lifting site, a standby site, a tower structure, a defect part and the surrounding environment of an operation point, and judging whether live-line operation can be carried out by adopting a lead and ground wire connection equipment method;
checking the spacing, arrangement form, phase distance, phase sequence and tower structure of the conductor and the ground wire, checking the specifications of tools and materials, and checking relevant product certificates and test detection reports;
checking whether the helicopter lead and ground wire connection equipment method flight path can meet the requirement of the safety distance according to the checking results of the lead and ground wire spacing, the interphase distance and the tower structure;
compiling an operation instruction technical file, determining an operator, and preparing a corresponding material tool;
if the ground wire is overhauled, the holding plane should be matched with an on-line operator to clearly determine the planned hovering time of the helicopter in the ground wire overhauling operation.
As a further improvement of the present invention, the work permit includes the following:
after the work licensor issues a work permission command, the work responsible person checks the line double title number and the line color code;
applying for stopping circuit reclosing, and meanwhile, if the circuit trips, the circuit can not be forcibly sent without contact;
the work responsible person on site peruses the work ticket and the dangerous point analysis and control sheet, and makes safety and technical interaction with all the working personnel, so that all the working personnel can clearly know the work content and the task division, master the operation program, the operation method and the technical requirements of the operation project, clearly determine the safety measures and the safety attention, sign and confirm after all the working personnel know, and give the order of starting the work.
As a further improvement of the invention, the pre-takeoff inspection comprises the following:
laying tarpaulin at a proper position, sequentially putting tools and appliances, checking whether the tools and appliances are complete or not and carrying out appearance check on the tools and appliances; live working personnel perform appearance inspection on hanging equipment, insulating ropes and the like, pilots and live working personnel wear shielding clothes, the resistances of the insulating ropes and the shielding clothes are measured, and the insulating performance is confirmed to meet the requirements; carrying out helicopter pre-flight inspection by pilots and crew members, and disassembling cabin doors of a helicopter cockpit; the ground operating personnel check the wind speed, the wind direction and the air humidity;
ground operating personnel check the connection condition of the manned lifting hook, the rope, the ground wire connecting equipment of the helicopter, confirm that the safety belt connecting rope, the operating ground wire connecting equipment and the rope system are reliably connected, measure the resistance of the shielding clothes, check the appearance and confirm that all parts are well and reliably connected;
the live-wire operator fixes the working tool and the potential transfer rod in the lead and ground wire connecting equipment to confirm that the communication equipment is in a normal working state.
As a further improvement of the invention, the hanging operation of the lead and ground wire connecting equipment is as follows:
ground operators connect the hanging system and live-line operators, the safety belt connecting ring of the rechecker is reliably connected with the insulating rope, and the potential transfer rod is firmly connected with the ground wire connecting equipment; and after no problem exists, commanding the helicopter to lift the height, hovering the helicopter 1.5 meters away from the ground to wait for the hook, and slowly unfolding the insulated rope after the hook of ground operating personnel to prevent the insulated rope from touching the ground.
As a further improvement of the present invention, the check before lift-off includes the following:
when the helicopter is in suspension operation and the ground wire connecting equipment takes off 0.5m from the ground, hovering inspection is carried out, and ground operators further confirm that the connection of the lifting hook, the rope, the ground wire connecting equipment and the like is reliable;
and the working responsible person observes the flight state of the helicopter hoisting guide and ground wire connecting equipment, and if the operation guide and ground wire connecting equipment rotates seriously, the working responsible person informs the flight personnel to further adjust the flight attitude and the flight speed.
As a further improvement of the invention, when flying to the operation site, the helicopter hangs personnel to fly against the operation line, and pilots and live-line workers verify the operation line and the tower, and simultaneously perform navigation obstacle identification and visual verification of the position of the operation site; the pilot selects a path according to the wind direction and slowly approaches the operating point at a constant speed.
As a further improvement of the invention, the operation of enabling the helicopter hanging guide and ground wire connecting equipment to enter a working position comprises the operation of entering a guide wire working position and the operation of entering a ground wire working position;
the wire work position operates as follows:
the pilot needs to control the attitude of the helicopter against the wind, selects the spacer closest to the operating point as a visual reference object, and linearly sends the lead wire and ground wire connecting equipment to the reference spacer along a specified angle; in the descending process, live working personnel inform the height information of the distance line through working gestures and communication equipment, the flying posture and the descending speed are adjusted, and a pilot observes the position of the personnel and the distance between the personnel and surrounding live bodies at any time;
after the lead and ground wire connecting equipment enters the operating lead position, a maintainer firstly firmly connects a safety belt protective rope with a lead, then disconnects the safety belt from a lifting rope, then firmly connects the lead and ground wire connecting equipment with the lead through a brake device and an anti-torsion device, disconnects the lead and ground wire connecting equipment from the lifting rope, and finally commands the helicopter to fly away from the operating position after confirming that the personnel is reliably connected with the lead and ground wire connecting equipment and the lead and is separated from the lifting rope;
entering the ground operating position operates as follows:
the pilot needs to control the attitude of the helicopter against the wind, the hanging guide and ground wire connecting equipment slowly descends, in the descending process, a maintainer communicates with a flight crew through communication equipment and operation gestures, the flight attitude and the descending speed are adjusted, and the pilot simultaneously observes the positions of the guide and ground wire connecting equipment and the distance between the guide and ground wire connecting equipment and a surrounding electrified body;
when the lead and ground wire connecting equipment descends to the position parallel to the ground wire, the maintenance personnel inform the pilot of stable hovering and assist the pulley of the lead and ground wire connecting equipment to enter the ground wire.
As a further improvement of the invention, the maintenance subjects develop operation according to the maintenance subject guide book; after the operation of the subject to be overhauled is finished, the helicopter is hung and the ground wire connecting equipment exits from the working position of the wire and exits from the working position of the ground wire, and the specific operation process is as follows: after receiving the notice of the completion of the operation of the operator, the pilot drives the helicopter to return to the position above the operation position, controls the posture of the helicopter against the wind, and the operator communicates with the flight crew through the communication equipment and the gestures to determine the relative position of the end of the sling cable from the operation place; after a maintenance person contacts the lifting rope, informing a pilot to control the helicopter to hover, firstly, after the maintenance person reliably connects the lead and ground wire connecting equipment with the lifting rope, removing a brake device and an anti-torsion device of the lead and ground wire connecting equipment, then connecting a safety belt protection rope with the lifting rope, removing the connection of the protection rope and a lead, confirming that a potential transfer rod is well connected with the lead, and informing the helicopter of the slow rising height; after the helicopter is hung with the lead and the ground wire connecting equipment separated from the lead, a maintainer checks whether the lead and the ground wire connecting equipment and the rope are completely separated, and the maintainer keeps communication with a pilot and informs the pilot to continue to ascend after confirming safety; after the maintainer finishes the maintenance subject, the brake device of the lead and ground wire connecting equipment is released, the fixed condition of the tool in the basket is checked, the lead and ground wire connecting equipment is confirmed to be separated from the ground wire, the pilot is informed of slowly lifting the height, and the lead and ground wire connecting equipment is assisted to stably separate from the ground wire.
As a further improvement of the invention, the helicopter return operation is as follows: the helicopter is hung to work and the ground wire connecting equipment returns to the upper part of the take-off and landing field to slowly descend, and the maintainers in the basket communicate with the pilot through operation gestures and communication equipment to confirm the height of the ground wire connecting equipment from the ground; when the operating ground wire and lead wire connecting equipment is close to the ground, ground coordination personnel discharge the ground wire and lead wire connecting equipment, the helicopter and the hook by utilizing the ground wire, after the ground wire and lead wire connecting equipment are stably contacted, a maintainer in the basket releases the connection of the lifting rope with the ground wire and lead wire connecting equipment and the safety belt, and the ground personnel arrange the lifting rope and put the lifting rope into a tool box to prevent the lifting rope from being affected with damp;
after the work is finished, the work responsible person deals with the work licensor, handles the completion procedures and leaves the site.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the invention provides a live-line maintenance operation method, which promotes live-line operators to deeply know live-line operation technology, safety risk points and control measures of a helicopter lead and ground wire connecting device method, and provides operation lead and ground wire connecting devices and matched tools suitable for live-line maintenance of a helicopter; the maintenance personnel are promoted to further absorb the current extra-high voltage live working maintenance technology and experience, the helicopter live working maintenance operation flow is standardized, the safety and the overall operation capacity of the operation are improved, and the reference significance is provided for the establishment of helicopter live working maintenance line measures.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a test state of a wiring system for a leakage current test of an upper segment arrester in the prior art;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic diagram of the wiring position of a clamp-on ammeter for measuring ionization current according to the present invention;
FIG. 4 is a schematic overall structure diagram of the saddle-type hanging basket of the invention;
FIG. 5 is a schematic view of the lifting state of the saddle-type hanging basket of the present invention;
FIG. 6 is a schematic overall structure diagram of the I-type ground wire hanging basket of the invention;
FIG. 7 is a type II ground wire basket of the present invention;
fig. 8 is a schematic view of the helicopter hoisting ring structure of the present invention.
Wherein:
the 1-triangular cone, the 2-rope, the 3-U-shaped suspension loop and the 4-saddle type guide and ground wire are connected with the equipment main body.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting.
Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
As shown in the figure 1 of the drawings,
a live-line repair operation method comprises the following steps:
s1, preparing in an early stage; s2, work permission is carried out; s3, checking before taking off; s4, hanging a lead wire and a ground wire connecting device; s5, checking before lifting off; s6, flying to an operation place; s7, enabling the helicopter hanging guide and ground wire connecting equipment to enter a working position; s8, developing a maintenance subject; s9, returning the helicopter; and S10, finishing the work.
Specifically, the preliminary preparation includes the following contents:
checking a lifting site, a standby site, a tower structure, a defect part and the surrounding environment of an operation point, and judging whether live-line operation can be carried out by adopting a lead and ground wire connection equipment method;
checking the spacing, arrangement form, interphase distance, phase sequence and tower structure of the lead and the ground wires, checking the specifications of tools and materials, and checking relevant product certificates and test detection reports;
checking whether the helicopter lead and ground wire connection equipment method flight path can meet the requirement of the safety distance according to the checking results of the lead and ground wire spacing, the interphase distance and the tower structure;
compiling an operation instruction technical file, determining an operator, and preparing a corresponding material tool;
if the ground line maintenance operation is carried out, the plane holding time and the planned hovering time of the helicopter in the ground line maintenance operation are determined by the on-line operator.
Specifically, the work license includes the following:
after the work licensor issues a work permission command, the work responsible person checks the line double title number and the line color code;
applying for stopping circuit reclosing, and meanwhile, if the circuit trips, the circuit can not be forcibly sent without contact;
the work responsible person on-site reading the work ticket and the dangerous point analysis and control list, making safety and technical interaction with all the working personnel, making all the working personnel clear the work content and task division, mastering the operation program, operation method and technical requirements of the operation project, making clear the safety measures and safety precautions, making sure the signature of all the working personnel, and making the working responsible person give the command of starting work.
Specifically, the check before takeoff includes the following contents:
paving tarpaulin at a proper position, sequentially arranging tools and instruments, checking whether the tools and instruments are complete or not and carrying out appearance check on the tools and instruments; live working personnel perform appearance inspection on hanging equipment, insulating ropes and the like, pilots and live working personnel wear shielding clothes, the resistances of the insulating ropes and the shielding clothes are measured, and the insulating performance is confirmed to meet the requirements; carrying out helicopter pre-flight inspection by pilots and crew members, and disassembling cabin doors of a helicopter cockpit; the ground operating personnel check the wind speed, the wind direction and the air humidity;
ground operating personnel check the connection condition of the manned lifting hook, the rope, the conductor and the ground wire connecting equipment of the helicopter, confirm that the safety belt connecting rope, the operation conductor and the ground wire connecting equipment of the personnel are reliably connected with a rope system, measure the resistance of the shielding clothes, check the appearance and confirm that all parts are well and reliably connected;
the live working personnel fixes the working tools and the potential transfer rods in the lead and ground wire connecting equipment and confirms that the communication equipment is in a normal working state.
Specifically, the hanging operation of the ground wire and the ground wire connecting equipment is as follows:
ground operators connect the hanging system and live-line operators, the safety belt connecting ring of the rechecker is reliably connected with the insulating rope, and the potential transfer rod is firmly connected with the ground wire connecting equipment; and after no problem is found, commanding the helicopter to lift the height, hovering the helicopter 1.5 meters away from the ground to wait for the hook, and slowly releasing the insulating rope after the hook is hooked by ground operating personnel to prevent the insulating rope from contacting the ground.
Specifically, the check before lift-off includes the following steps:
when the helicopter is in suspension operation and the ground wire connecting equipment takes off 0.5m from the ground, hovering inspection is carried out, and ground operators further confirm that the connection of the lifting hook, the rope, the ground wire connecting equipment and the like is reliable;
and the working responsible person observes the flight state of the helicopter hoisting guide and ground wire connecting equipment, and if the operation guide and ground wire connecting equipment rotates seriously, the working responsible person informs the flight personnel to further adjust the flight attitude and the flight speed.
Specifically, when flying to the operation place, the helicopter hangs personnel to fly against the operation line, pilots and live working personnel check the operation line and the pole tower, and simultaneously, navigation obstacles are identified, and the position of the operation place is visually checked; the pilot selects a path according to the wind direction and slowly approaches the operating point at a constant speed.
Specifically, the operation of enabling the helicopter hanging guide and ground wire connecting equipment to enter a working position comprises operation of entering a guide wire working position and operation of entering a ground wire working position;
the wire work position operates as follows:
a pilot needs to control the posture of the helicopter against the wind, selects a spacer rod closest to an operation point as a visual reference object, and linearly sends the ground wire connecting equipment and the ground wire connecting equipment to the reference spacer rod along a specified angle; in the descending process, live working personnel inform the height information of the distance line through working gestures and communication equipment, the flight attitude and the descending speed are adjusted, and pilots observe the positions of the live working personnel and the distances between the live working personnel and surrounding live bodies at any time;
after the lead and ground wire connecting equipment enters the operating lead position, a maintainer firstly firmly connects a safety belt protective rope with a lead, then disconnects the safety belt from a lifting rope, then firmly connects the lead and ground wire connecting equipment with the lead through a brake device and an anti-torsion device, disconnects the lead and ground wire connecting equipment from the lifting rope, and finally commands the helicopter to fly away from the operating position after confirming that the personnel is reliably connected with the lead and ground wire connecting equipment and the lead and is separated from the lifting rope;
the ground work position entry operation is as follows:
the pilot needs to control the posture of the helicopter against the wind, the hanging guide and ground wire connecting equipment slowly descends, the maintainers communicate with the flight personnel through communication equipment and operation gestures in the descending process, the flight posture and the descending speed are adjusted, and the pilot simultaneously observes the positions of the guide and ground wire connecting equipment and the distance between the guide and ground wire connecting equipment and surrounding electrified bodies;
when the lead and ground wire connecting equipment descends to the place where the ground wire is parallel, the maintainer informs the pilot of stable hovering and assists the pulley of the lead and ground wire connecting equipment to enter the ground wire.
Specifically, the maintenance subjects carry out operation according to the maintenance subject instruction; after the operation of the subject to be overhauled is finished, the helicopter is hung and the ground wire connecting equipment exits from the working position of the wire and exits from the working position of the ground wire, and the specific operation process is as follows: after receiving the notice of the completion of the operation of the operator, the pilot drives the helicopter to return to the position above the operation position, the attitude of the helicopter is controlled against the wind, and the operator communicates with the flight crew through the communication equipment and the gesture to determine the relative position of the sling end from the operation place; after a maintenance person contacts the lifting rope, informing a pilot to control the helicopter to hover, firstly, after the maintenance person reliably connects the lead and ground wire connecting equipment with the lifting rope, removing a brake device and an anti-torsion device of the lead and ground wire connecting equipment, then connecting a safety belt protection rope with the lifting rope, removing the connection of the protection rope and a lead, confirming that a potential transfer rod is well connected with the lead, and informing the helicopter of the slow rising height; after the helicopter is hung with the lead and ground wire connecting equipment separated from the lead, a maintainer checks whether the lead and ground wire connecting equipment and the rope are completely separated, keeps communication with a pilot and informs the pilot to continue to rise after safety is confirmed; after the maintenance personnel finish the maintenance subjects, the brake device of the lead and ground wire connecting equipment is released, the fixing condition of the tool in the basket is checked, the lead and ground wire connecting equipment is confirmed to be separated from the ground wire, the pilot is informed to slowly lift the height, and the lead and ground wire connecting equipment is assisted to stably separate from the ground wire.
Specifically, the helicopter return operation is as follows: the helicopter is hung to operate the lead and ground wire connecting equipment to return to the upper part of the take-off and landing field and slowly descend, and a maintainer in the basket communicates with a pilot through an operation gesture and communication equipment to confirm the height of the lead and ground wire connecting equipment from the ground; when the operating ground wire connecting equipment approaches the ground, ground coordination personnel discharge the ground wire connecting equipment, the helicopter and the hook by utilizing the ground wire, after the ground wire connecting equipment is stably contacted with the ground, a maintainer in the basket releases the connection of the lifting rope with the ground wire connecting equipment and the safety belt, and the ground personnel tidy the lifting rope and put the lifting rope into a tool box to prevent the lifting rope from being damped;
after the work is finished, the work responsible person gives orders to the work licensor, handles the completion procedures and withdraws from the site.
Aiming at the research and development work of the helicopter guide and ground wire connection equipment method live-wire work development operation guide and ground wire connection equipment and matched tools for developing the internal ultrahigh voltage alternating current and direct current transmission line, a design scheme of a functional module of the guide and ground wire connection equipment is comprehensively considered according to various factors such as a conductor splitting form of an ultrahigh voltage line, the operation of maintenance operators and the space size occupied by the tools, the connection mode of the guide and ground wire connection equipment and a sling and the like when the guide and ground wire connection equipment is designed. The helicopter is used for conveying people, the lead wire connecting equipment and the ground wire connecting equipment to a lead wire operating point so as to expand operating items such as replacement of a lead wire spacer, replacement of a lead wire vibration damper, pre-twisted wire repair of a lead wire and the like. Referring to the experience of operation of a national network navigation 500kV lead and ground wire connecting device (plug-in lead and ground wire connecting device) method, and combining the characteristics of lead parameters of 1000kV and +/-800 kV extra-high voltage lines and a helicopter flight operation mode, a universal design manual of power transmission and transformation engineering is checked to obtain the following related lead parameters of the extra-high voltage lines:
the type of the +/-800 kV direct-current transmission line conductor is ACSR-720/50 (1250/xxx), and the distribution of the six-bundle conductor is shown in figure 2;
the wire of the 1000kV alternating-current transmission line has a model number LGJ-630/50, and the distribution of eight-bundle wires is shown in figure 3.
Through comparative analysis and demonstration of the plug-in type lead and ground wire connecting equipment, the C-type lead and ground wire connecting equipment, the saddle type lead and ground wire connecting equipment, the design scheme of the saddle type lead and ground wire connecting equipment is finally determined. The saddle type ground wire and lead connecting device avoids the narrow internal space of the ground wire and lead connecting device when being inserted, also avoids the defect that the C-shaped ground wire and lead connecting device is difficult to suspend and locate on a lead, and has the advantages of simple structure, large space, small flying suspension difficulty and the like, thereby becoming the finally selected structural mode of the ground wire and lead connecting device.
The structural design of the saddle type lead and ground wire connecting device is as follows:
material of ground wire and lead wire connecting equipment
According to the working mode of saddle type ground wire and wire connecting equipment, the distribution size of eight-bundle conductor directly determines the external size of ground wire and wire connecting equipment. The overall dimension of the connecting device for the conducting wire and the ground wire is relatively large, and if the weight of the connecting device for the conducting wire and the ground wire is small, the connecting device for the conducting wire and the ground wire has to be high in strength and light in weight in the aspect of material selection.
According to the requirements of live working tools, the main body of the designed lead and ground wire connecting equipment adopts an aluminum alloy pipe of LY12, the joint material adopts LC4 superhard aluminum alloy, and other parts of the lead and ground wire connecting equipment adopt steel. Therefore, the self weight is lighter on the premise of ensuring the strength of the connecting equipment of the conducting wire and the ground wire.
Integral structure of ground wire and lead wire connecting equipment
Referring to the handbook of design of steel structures (second edition), a platform structure is generally composed of planks, beams, columns, inter-column supports, ladders, railings, and the like. According to the design of the functional modules of the lead and ground wire connecting equipment, before each functional module is assembled, a framework base body supporting module is required, and the framework base body parts are main stress components of the lead and ground wire connecting equipment, so that on the premise of meeting the use function, enough strength and rigidity also need to be ensured, and the use safety and reliability of the lead and ground wire connecting equipment are improved. The frame overall dimension of the saddle type guide and ground wire connecting device is as follows: 2300 is multiplied by 900 by 1420mm, the external dimension is that the width is 1045mm according to the maximum circle of the division of the eight-split conductor, and the dimension is 2300mm selected by the standing space of two persons; the length is 900mm in size considering the space in which the maximum eight-split conductor spacer can be vertically placed.
The two sides of the ground wire connecting equipment are respectively provided with a hanging frame which can accommodate 1 adult male overhaul operation activity space, and the size of the hanging frame is designed to be 900mm (length) multiplied by 500mm (width) so as to meet the space size required by the operation. The live-line maintenance operation of the helicopter lead and ground wire connection equipment method is overhead operation, a railing needs to be designed, the height of the railing is slightly higher than the gravity center of a human body by referring to the first volume of a mechanical design manual, but in order to overcome psychological obstacles of workers and improve the safety of live-line operation, the height of the railing is designed to be 1000mm (high).
The whole frame is provided with two positions of guide, one is the guide below the pulley block, the other is that the guide feet are arranged below the hanging frames at two sides, and the guide feet can directly play the role of the support feet of the ground wire connecting equipment and directly place the ground. The structure of the lead and ground wire connecting device is shown in fig. 4.
The saddle type lead and ground wire connecting equipment is helicopter, sling system, lead and ground wire connecting equipment from top to bottom. Two hoisting modes of the saddle type guide and ground wire connecting device are hoisting by using a hoisting ring, as shown in 5, a U-shaped hanging ring 3 is fixedly installed on an upper cross beam of a saddle type guide and ground wire connecting device main body 4, two U-shaped hanging rings 3 with opposite bolting positions of ropes 2 draw 2 or a plurality of ropes 2 through a triangular cone 1, and the triangular cone 1 is fixedly installed on a sling system below the helicopter. The design and strength check of the lead wire and ground wire connecting equipment are as follows:
rated design load and destructive load of lead and ground wire connecting equipment
The rated design weight Qrs of the manned tool is calculated as follows, as specified in GB/T18037-2008 "basic technical requirements and design guidelines for live-wire tools".
Q is the rated design load calculation formula of manned tool rs ＝K c ×Q r
In the formula: kc-impact coefficient. Table 21 specifies the man-power tool impact coefficient, which is 2.5 for the motorized lift impact coefficient of the man-power tool.
The dead weight of the lead and ground wire connecting equipment is also considered in the rated load of the lead and ground wire connecting equipment of the helicopter, and the dead weight of the lead and ground wire connecting equipment is calculated according to 110 kg. The weight of a pilot (2) is 160kg, the weight of a helmet and a shielding clothes is 6kg, and the weight of a live-wire work tool (comprising electricity)Level shift lever) of 25kg, and therefore the rated load Q of the helicopter's wire lead and ground connection equipment rs ＝K c ×Q r (N)＝2.5×301×9.8＝7.37kN。
The safety coefficient of the plastic material steel casting is 1.8-2.5 according to the GB/T18037-2008 'basic technical requirements and design guide rules of live working tools'. In addition, when the component bears dynamic load, the safety coefficient value should be increased by 1.5-2.0 times. The safety factor requirement of the helicopter manned flight training is high, so that the safety factor of the helicopter is 5.0. In addition, the imbalance coefficient should be considered, and the imbalance coefficient K is generally taken as b =1.1, when the stressed component is distributed n times according to the total load, K is taken b ＝1.1 n . Therefore, the damage load of the lead and ground wire connecting equipment of the helicopter is Q = K c ×Q r (N)＝301×9.8×2.5×2×1.1×2.5＝40.56kN。
Brake structural design leads, ground wire jointing equipment's brake subassembly: because the wire has a slope, in order to prevent the wire and the ground wire connecting equipment from sliding downwards on the wire, a brake is arranged in front of each pulley of the wire and the ground wire connecting equipment.
The brake design adopts the mode of fastener, sets up the brake near every group wire wheel, and totally four groups, brake subassembly are by leading, staff manual operation in the ground wire jointing equipment. According to different wire forms, the wire clamp can be replaced in real time, and the wire clamp is convenient to install and simple to operate.
Anti-twist device design
The anti-twisting device adopts flexible connection, the whole device can be placed in the two sides of the lead and ground wire connecting equipment before hanging, and the lead is not scratched when the lead and ground wire connecting equipment enters the lead. The whole set of device consists of a wire hook, a tightening device and a connector, and the total number of the devices is four.
Structure design of ground wire conducting and connecting device
Ground wire leads, ground wire jointing equipment material
According to the requirements of live-wire operation tools, the main body of the ground wire guide and ground wire connecting equipment adopts an aluminum alloy pipe material of LY12, the joint material adopts LC4 superhard aluminum alloy, and other elements are connected with the lead wire guide and ground wire connecting equipment, so that the self weight is light on the premise of ensuring the strength of the ground wire guide and ground wire connecting equipment.
Integral structure of ground wire conducting and connecting device
According to the operation mode of the helicopter lead and ground wire connection equipment method and the ground wire parameters of the ultrahigh voltage alternating current and direct current transmission line in China, the lead and ground wire connection equipment is developed. By referring to the development experience of the extra-high voltage alternating current and direct current ground wire aerodyne and the extra-high voltage line parameters of 1000kV and +/-800 kV (the ground wire specification is LGJ-240, the diameter is 22.4 mm), according to the characteristics of helicopter flight operation, the ground wire lead and ground wire connecting equipment only bears one person, the occupied space of the tool is small, therefore, the design size of the ground wire lead and ground wire connecting equipment is small, and the main structure refers to a single-wire aerodyne commonly used on the line. Through comprehensive analysis, the operation mode which is the same as that of the wire guide and ground wire connecting equipment is finally determined, is basically similar to a rope ladder head mode, and is simple, safe and quick.
As shown in fig. 6, the frame external dimensions of the ground wire lead and ground wire connecting device are as follows: 600X 550X 1200-1950 mm. I type ground wire leads, ground wire connecting device includes:
hanging a frame: the bottom of the lead and ground wire connecting equipment is provided with a hanging frame for accommodating a maintainer and a portable tool, when the lead and ground wire connecting equipment enters the ground wire, the staff needs to squat or sit in the hanging frame, and when the staff needs to overhaul after arriving at a working place, the staff stands to start working; the height of the main beam of the lead and ground wire connecting equipment can be adjusted according to the requirements of maintenance subjects before operation, so that the maintenance operation is convenient. The anti-skidding aluminum alloy plate is laid to hang frame bottom, erects the protection network around hanging the frame, avoids multiplexer utensil to drop. A guide rod: when the hanging ground wire guiding and connecting device of the helicopter is ready to enter the ground wire, a maintainer commands a pilot to adjust the posture, and the hanging ground wire guiding and connecting device enters the ground wire along a guide rod. The contact part of the guide rod and the ground wire is coated with rubber to prevent the ground wire from being scratched.
A pulley device: two pulleys which are arranged in front and at the back are arranged at the top of the ground wire conducting and connecting device; the supporting function of the ground wire connecting equipment on the ground wire is achieved, and the high-strength nylon material is adopted.
As shown in fig. 7, the external dimension of the II-type ground wire and ground wire connection device is 500 × 800 × 1200mm.
The II-type ground wire connecting device and the ground wire connecting device are connected with the II-type ground wire connecting device and the ground wire connecting device through 4 hanging points. When the helicopter is lifted, workers need to squat or sit in the ground wire connecting equipment, and when the helicopter needs to be overhauled after arriving at a working place, the workers stand in the hanging frame. The adjustable range of the distance between the front support rods of the lead and ground wire connecting equipment is 890-1390 mm, the front support rods can be installed at proper positions according to actual maintenance requirements, fixing bolts in the adjusting holes are firstly disassembled during distance adjustment, and then the fixing bolts are inserted into the adjusting holes to be fastened when the support rods are adjusted to the proper positions.
Rated design load of ground wire lead and ground wire connecting equipment
GB/T18037-2008 "basic technical requirements and design guide for live working tools" states that the rated design weight Qrs of the manned tool is calculated as follows.
Q is the rated design load calculation formula of manned tool rs ＝K c ×Q r
In the formula: kc-impact coefficient. Table 21 specifies the man-power tool impact coefficient, which is 2.5 for the motorized lift impact coefficient of the man-power tool.
When the ground wire connecting equipment of the helicopter is operated, a person is born, the weight is about 80kg, the weight of the helmet shielding clothes is about 6kg, the weight of an operation tool is about 25kg, and the weight of the ground wire connecting equipment is 40kg, so that the weight of the ground wire connecting equipment needs to be born is about 150kg.
Therefore, the rated load Q of the helicopter lead and ground wire connecting equipment rs ＝K c ×Q r (N) =2.5 × 150 × 9.8=3.68kn. The safety coefficient of the plastic material steel casting is 1.8-2.5 according to the GB/T18037-2008 'basic technical requirements and design guide rules of live working tools'. In addition, when the component bears dynamic load, the safety coefficient value should be increased by 1.5-2.0 times. The helicopter is hung with a manned flight training device outside the helicopter, and the safety factor is 5.0. In addition, the imbalance coefficient should be considered, and the imbalance coefficient K is generally taken b =1.1, force-receiving component is according to total loadWhen distributing for n times, take K b ＝1.1 n . Therefore, the damage load of the lead and ground wire connecting equipment of the helicopter is Q = K c ×Q r (N)＝150×9.8×2.5×1.1×2.5×2＝20.21kN。
Intensity checking of hoisting closed ring of elevator
According to the parameter requirement of the double hooks for the external hanging of the Bell429 helicopter, the allowable hanging weight of the main hook is 600kg, and the limited rated load of the closed ring is designed according to 600 kg. The specific design dimensions of the helicopter hoisting closed loop used when matching with a helicopter hoisting heavy object are shown in fig. 8.
(1) The material of the lifting ring of the helicopter is 60si2Mn and the tensile strength sigma thereof b ≥1274MPa
Q is the rated design load calculation formula of manned tool rs ＝K c ×Q r
Thus the rated load Q of the helicopter hoisting ring rs ＝K c ×Q r ＝3.5×600×9.8＝20.58kN
(2)F＝Q rs ×n s ＝20.58kN×5＝102.90kN
In the formula: rated load of a wire lead and ground wire connecting device of the Qrs helicopter is taken as 20.58kN ns, namely a safety factor, and 5 is taken.
(3) And (4) conclusion: the [ sigma ] =1274MPa is less than or equal to 163.77MPa, and the tensile stress borne by the helicopter hoisting ring is less than the allowable tensile stress, so that the helicopter hoisting ring is safe and reliable under the working condition.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; it is obvious as a person skilled in the art to combine several aspects of the invention. And such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (1)
1. A live-line maintenance operation method for a helicopter is characterized in that the operation flow comprises the following steps:
s1, preparing in an early stage; s2, work permission is carried out; s3, checking before taking off; s4, installing a lead and ground wire connecting device; s5, checking before lifting off; s6, flying to an operation place; s7, enabling the helicopter hanging guide and ground wire connecting equipment to enter a working position; s8, developing maintenance projects; s9, returning the helicopter; s10, ending the work;
the early preparation comprises the following contents:
checking a take-off and landing site, a standby landing site, a tower structure, a defect part and the surrounding environment of an operation point, and judging whether live-line operation can be carried out by adopting a helicopter;
checking the spacing, arrangement form, phase distance, phase sequence and tower structure of the conductor and the ground wire, checking the specifications of tools and materials, and checking relevant product certificates and test detection reports;
checking whether the flight paths of the helicopter and the suspended ground wire and lead wire connecting equipment can meet the requirement of the safety distance according to the checking results of the space between the ground wire and the lead wire, the inter-phase distance and the tower structure;
compiling an operation instruction technical file, determining an operator, and preparing a corresponding material tool;
if the ground wire maintenance operation is carried out, the holding plane should be matched with an on-line operator to clarify the planned hovering time of the helicopter in the ground wire maintenance operation;
the work license includes the following:
after the work licensor issues a work permission command, the work responsible person checks the line double title and the line color code; applying for stopping circuit reclosing, and meanwhile, if the circuit trips, the circuit can not be forcibly sent without contact;
the work responsible person on-site reading the work ticket and the dangerous point analysis and control list, making safety and technical interaction with all the working personnel, making all the working personnel clear the work content and task division, mastering the operation program, operation method and technical requirements of the operation project, making clear the safety measures and safety precautions, making sure the signature and confirmation after the confirmation of all the working personnel, and making the work responsible person give the command of starting work;
the pre-takeoff inspection includes the following:
laying tarpaulin at a proper position, sequentially putting tools and appliances, checking whether the tools and appliances are complete or not and carrying out appearance check on the tools and appliances; the live working personnel perform appearance inspection on hanging equipment, insulating ropes and the like, pilots and the live working personnel wear shielding clothes, the resistances of the insulating ropes and the shielding clothes are measured, and the insulating performance is confirmed to meet the requirements; carrying out helicopter pre-flight inspection by pilots and crew members, and disassembling cabin doors of a helicopter cockpit; the ground operating personnel check the wind speed, the wind direction and the air humidity;
ground operating personnel check the connection condition of the manned lifting hook, the rope, the conductor and the ground wire connecting equipment of the helicopter, confirm that the safety belt connecting rope, the operation conductor and the ground wire connecting equipment of the personnel are reliably connected with a rope system, measure the resistance of the shielding clothes, check the appearance and confirm that all parts are well and reliably connected;
the live working personnel fixes the working tools and the potential transfer rods in the lead and ground wire connecting equipment and confirms that the communication equipment is in a normal working state;
the hanging operation of the ground wire and the ground wire connecting equipment is as follows:
ground operators connect the hanging system and live-line operators, the safety belt connecting ring of the rechecker is reliably connected with the insulating rope, and the potential transfer rod is firmly connected with the ground wire connecting equipment; commanding the helicopter to lift up after no problem is found, hovering the helicopter 1.5 meters away from the ground for waiting for hooking, slowly spreading the insulating rope after the ground operating personnel hooks, and preventing the insulating rope from touching the ground;
the pre-lift-off check comprises the following:
when the guiding and ground wire connecting equipment for helicopter hanging operation takes off 0.5m from the ground, hovering inspection is carried out, and ground operators further confirm that the connection of the lifting hook, the rope, the guiding and ground wire connecting equipment and the like is reliable;
the working responsible person observes the flight state of the helicopter hoisting guide and ground wire connecting equipment, if the operation guide and ground wire connecting equipment rotates seriously, the working responsible person informs the flight personnel to further adjust the flight attitude and the flight speed;
when the helicopter flies to an operation place, hanging personnel to fly against an operation line by the helicopter, checking the operation line and a tower by a pilot and live working personnel, identifying a navigation obstacle and visually checking the position of the operation place; the pilot selects a path according to the wind direction and approaches an operation point at a constant speed;
the helicopter hanging guide and ground wire connecting equipment enters a working position, and comprises a guide wire working position entering operation and a ground wire working position entering operation;
the wire work position operates as follows:
a pilot needs to control the posture of the helicopter against the wind, selects a spacer rod closest to an operation point as a visual reference object, and linearly sends the ground wire connecting equipment and the ground wire connecting equipment to the reference spacer rod along a specified angle; in the descending process, live working personnel inform the height information of the distance line through working gestures and communication equipment, the flying posture and the descending speed are adjusted, and a pilot observes the position of the personnel and the distance between the personnel and surrounding live bodies at any time;
after the lead and ground wire connecting equipment enters the operating lead position, a maintainer firstly firmly connects a safety belt protective rope with a lead, then disconnects the safety belt from a lifting rope, then firmly connects the lead and ground wire connecting equipment with the lead through a brake device and an anti-torsion device, disconnects the lead and ground wire connecting equipment from the lifting rope, and finally commands the helicopter to fly away from the operating position after confirming that the personnel is reliably connected with the lead and ground wire connecting equipment and the lead and is separated from the lifting rope;
the ground work position entry operation is as follows:
the pilot needs to control the posture of the helicopter against the wind, the hanging guide and ground wire connecting equipment slowly descends, the maintainers communicate with the flight personnel through communication equipment and operation gestures in the descending process, the flight posture and the descending speed are adjusted, and the pilot simultaneously observes the positions of the guide and ground wire connecting equipment and the distance between the guide and ground wire connecting equipment and surrounding electrified bodies;
when the lead and ground wire connecting equipment descends to the place where the ground wire is parallel, a maintainer informs a pilot of stable hovering and assists the pulley of the lead and ground wire connecting equipment to enter the ground wire;
carrying out operation by the maintenance subjects according to the maintenance subject instruction; after the operation of the subject to be overhauled is finished, the helicopter is hung and the ground wire connecting equipment exits from the working position of the wire and exits from the working position of the ground wire, and the specific operation process is as follows: after receiving the notice of the completion of the operation of the operator, the pilot drives the helicopter to return to the position above the operation position, controls the posture of the helicopter against the wind, and the operator communicates with the flight crew through the communication equipment and the gestures to determine the relative position of the end of the sling cable from the operation place; after a maintenance person contacts the lifting rope, the maintenance person is informed to control the helicopter to hover, firstly, after the maintenance person reliably connects the lead and ground wire connecting equipment with the lifting rope, the brake device and the anti-twisting device of the lead and ground wire connecting equipment are removed, then the safety belt protection rope of the maintenance person is connected with the lifting rope, the connection between the protection rope and a lead is removed, the potential transfer rod is confirmed to be well connected with the lead, and the helicopter is informed of slowly rising height; after the helicopter is hung with the lead and ground wire connecting equipment separated from the lead, a maintainer checks whether the lead and ground wire connecting equipment and the rope are completely separated, keeps communication with a pilot and informs the pilot to continue to rise after safety is confirmed; after the maintenance personnel complete the maintenance subject, the brake device of the lead and ground wire connecting equipment is released, the fixing condition of the tool in the basket is checked, the lead and ground wire connecting equipment is confirmed to be separated from the ground wire, the pilot is informed of slowly lifting the height, and the lead and ground wire connecting equipment is assisted to stably separate from the ground wire;
the helicopter return operation is as follows: the helicopter is hung to work and the ground wire connecting equipment returns to the upper part of the take-off and landing field to slowly descend, and the maintainers in the basket communicate with the pilot through operation gestures and communication equipment to confirm the height of the ground wire connecting equipment from the ground; when the operating ground wire and lead wire connecting equipment is close to the ground, ground coordination personnel discharge the ground wire and lead wire connecting equipment, the helicopter and the hook by utilizing the ground wire, after the ground wire and lead wire connecting equipment are stably contacted, a maintainer in the basket releases the connection of the lifting rope with the ground wire and lead wire connecting equipment and the safety belt, and the ground personnel arrange the lifting rope and put the lifting rope into a tool box to prevent the lifting rope from being affected with damp;
after the work is finished, the work responsible person deals with the work licensor, handles the completion procedures and leaves the site.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110504816.8A CN113315025B (en) | 2021-05-10 | 2021-05-10 | Live overhaul operation method for helicopter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110504816.8A CN113315025B (en) | 2021-05-10 | 2021-05-10 | Live overhaul operation method for helicopter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113315025A CN113315025A (en) | 2021-08-27 |
| CN113315025B true CN113315025B (en) | 2023-01-17 |
Family
ID=77371835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110504816.8A Active CN113315025B (en) | 2021-05-10 | 2021-05-10 | Live overhaul operation method for helicopter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113315025B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105977863A (en) * | 2016-06-08 | 2016-09-28 | 国网甘肃省电力公司检修公司 | Power transmission power off maintenance method and live-line maintenance method through rope throwing by unmanned plane |
| CN109256721A (en) * | 2017-07-14 | 2019-01-22 | 国网通用航空有限公司 | A kind of helicopter live-line maintenance operation hanging basket |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715632B (en) * | 2014-01-10 | 2016-09-14 | 国网通用航空有限公司 | A kind of transmission line operation erecting by overhang and transmission line operation method |
| CN104377599B (en) * | 2014-12-08 | 2018-08-28 | 国家电网公司 | A kind of hanging basket for helicopter live-line maintenance operation |
| CN107181203A (en) * | 2017-07-14 | 2017-09-19 | 国网通用航空有限公司 | Helicopter hotline maintenance ground wire basket of work |
| CN210535850U (en) * | 2019-11-05 | 2020-05-15 | 国网通用航空有限公司 | Optical rod type electric potential transfer rod for manned live-line work of helicopter |
-
2021
- 2021-05-10 CN CN202110504816.8A patent/CN113315025B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105977863A (en) * | 2016-06-08 | 2016-09-28 | 国网甘肃省电力公司检修公司 | Power transmission power off maintenance method and live-line maintenance method through rope throwing by unmanned plane |
| CN109256721A (en) * | 2017-07-14 | 2019-01-22 | 国网通用航空有限公司 | A kind of helicopter live-line maintenance operation hanging basket |
Non-Patent Citations (2)
| Title |
|---|
| 500 kV 同塔双回输电线路直升机吊索法带电作业;唐波;《南方电网技术》;20200630;第14卷(第6期);第71-79页 * |
| 直升机作业在超高压输电线路巡视;赵志刚;《河北电力技术》;20130831;第32卷(第4期);第9-11页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113315025A (en) | 2021-08-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102267664B (en) | Method for installing bridge crane using load-supporting roof beam for hoisting and usage thereof | |
| CN103528786B (en) | A kind of multifunction test device and its method of work | |
| CN209253981U (en) | A kind of fall protection device for working at height | |
| CN103523683A (en) | Construction method for dismantling tower crane by use of small hoisting equipment | |
| KR20080044012A (en) | Barehand method to live line for 765kv double circuit transmission lines using a helicopter | |
| CN205452906U (en) | Combination dock switch overhauls platform | |
| CN107181203A (en) | Helicopter hotline maintenance ground wire basket of work | |
| CN108996421B (en) | Finished furniture hoisting machine and finished furniture hoisting method | |
| CN203465079U (en) | Multifunctional testing device | |
| CN104577876B (en) | Plug-in hanging basket for live working of helicopter | |
| CN113666242A (en) | Modular hoisting method for spray frame in climate environment test | |
| CN103867022B (en) | One is carried and is touched formula concrete chimney construction method | |
| JP7241155B2 (en) | MOVEMENT SYSTEMS, METHODS FOR MOVEMENT OF ARTICLES, AND RELATED COMPONENTS | |
| CN105932601B (en) | Disconnected strand of overhead grounding wire method for repairing and mending | |
| CN113315025B (en) | Live overhaul operation method for helicopter | |
| CN107929972B (en) | Rescue method for power transmission line overhead working personnel after pole tower falls down | |
| CN109534221A (en) | A kind of installing/dismounting method and its installing and dismounting special-purpose vehicle of hoist falling-proof device | |
| CN105083350A (en) | Special vehicle for power maintenance | |
| CN110255331A (en) | A kind of building hoist testing stand | |
| CN205603092U (en) | Portable loop wheel machine | |
| CN102455254A (en) | Safety lock test stand | |
| CN205676052U (en) | Bench type transformer crane device | |
| CN204530513U (en) | The manned maintenance Hanging Basket of suspension cable | |
| CN207812982U (en) | A kind of inner wall of oil tank construction hanging basket | |
| CN103452043B (en) | Maintenance system of cable-stayed bridge solid pylon and application of maintenance system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |