CN114336404B - Automatic wire feeding, connecting and insulating fastening device for distribution network line - Google Patents
Automatic wire feeding, connecting and insulating fastening device for distribution network line Download PDFInfo
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- CN114336404B CN114336404B CN202111468226.0A CN202111468226A CN114336404B CN 114336404 B CN114336404 B CN 114336404B CN 202111468226 A CN202111468226 A CN 202111468226A CN 114336404 B CN114336404 B CN 114336404B
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Abstract
An automatic wire feeding, connecting and insulating fastening device for distribution network lines belongs to the field of electric connecting devices. Setting a bottom stabilizing frame; two screw rods are arranged on the bottom stabilizing frame; a screw rod fixer with a hook is arranged at the upper ends of the two screw rods; the two screw rods are penetrated and provided with a driving-control module which is wrapped by a frame outer shell and a frame inner shell; a clamp assembly is arranged on the upper end surface of the frame shell; a clamping type fixing fitting is arranged at the bare wire end of the cable to be connected; a limit frame is arranged on the upper end surface of the frame shell, a direct current motor is arranged in the driving-controlling module, and an output shaft of the direct current motor is connected with a worm; the worm and one screw rod adopt a rotary connection mode; a torsion motor is arranged below the limiting frame. The automatic wire feeding, automatic connection, automatic fastening, automatic separation and automatic separation are adopted to replace the live wire connection mode that operators must contact live hardware fittings, so that the wire connection quality is ensured.
Description
Technical Field
The utility model belongs to the field of electric connection devices, and particularly relates to a connection insulation fastening device for an overhead line.
Background
The lines that supply power directly to the user are called distribution lines, and the network formed by the distribution lines is called a distribution network, or simply a distribution network.
Distribution lines are important facilities for bearing the task of transmitting power in a power system, and power transmission lines are distributed geographically and widely, are huge in number and various and rapidly change in running state.
Along with the development of the times, people have higher and higher requirements on electric power, and the improvement construction management of the distribution network line is enhanced, so that the method has very important significance for the safe operation of the distribution network line.
In recent years, in order to cooperate with a series of actions such as increasing the power grid transformation force, optimizing the commercial environment, improving the uninterrupted operation management of the distribution network, the uninterrupted operation is an important ring in the distribution network operation management and maintenance system.
The transmission line is used as an important facility for bearing the task of transmitting power in the power system, and effective and efficient operation and maintenance work is a key for guaranteeing safe and reliable operation of the power system. Moreover, the power transmission lines are distributed geographically in a wide area, the number is huge and various, the running state changes rapidly, and the construction workload is correspondingly huge. In the operation process of each connecting fitting of the line, under the large environment of ensuring the reduction of the power failure rate (service commitments of which the power failure time is not longer than XX minutes are made by power supply departments in many cities), the popularity of live working projects can be greatly increased, and the corresponding workload can be larger.
Most of the existing line fittings known at present are directly contacted by a line constructor through insulating gloves by bare hands, and hidden danger of mistaken contact of the constructor exists. According to statistics, a large part of live working construction is related to the operation mode that live working personnel have to contact with live hardware.
Currently, under the large environment that the power failure rate is reduced, the power supply reliability is improved, and the requirements of live construction are increasingly increased, research and development of a set of live working tools and adaptive hardware fittings with convenient carrying, efficient construction, safety and stability and strong construction environment adaptability are urgent.
The patent of the utility model with the publication number CN 201256263Y, which is issued on the 6 th and 10 th days of 2009, discloses a live fastener for a hardware bolt, wherein a long-distance extending knot is movably connected to a round handle at the tail part of a torque wrench, the top of an insulating operating rod is connected with the long-distance extending knot, and the other insulating operating rod is connected near the working head of the torque wrench. The bolt is used for fastening bolts of hardware tools such as a damper, a wire clamp and the like on the ground potential (on a rod tower), can enable the screw tightness to reach a specified standard, has short operation construction time and high safety coefficient, and can change the equipotential operation construction mode into the ground potential construction mode. However, it requires two hands of the constructor, and obviously cannot be implemented on overhead lines or on the pylon.
The utility model patent application with the application publication number of CN 109980381A discloses an electric connection fitting and a method thereof, wherein the application publication date is 2019, 7, 5, and the method comprises the following steps: the wire clamping clip is provided with a first groove; the inner wall of the hardware fitting body is provided with a sliding groove for the clamping wire clamp to slide, and a hardware fitting base at the bottom of the hardware fitting body is provided with a second groove which is used for placing a wire and a lead and is matched with the first groove; the bolts sequentially penetrate through the bolt holes on the hardware fitting base and the bolt holes on the wire clamping clips from bottom to top; and the spring is sleeved outside the bolt, and the bolt is screwed to compress so as to control the distance between the hardware fitting base and the clamping clip, and the spring is propped between the clamping clip and the hardware fitting base. The utility model can solve the problem that when the distribution line is electrified, the mechanical arm of the electrified robot is easy to carry out electrified lap joint on the overhead line and the lead wire, and the mechanical arm can be separated from the connecting hardware fitting after lap joint, so that the wiring fastening hardware fitting (hardware fitting for short) replaces the existing wire connecting clamp; the electric lapping machine has certain mechanical strength and current conducting capacity, and ensures that the overhead line can safely run for a long time after the robot is lapped in an electrified way. The technical scheme needs to operate the live robots, the complete set of live working system needs more supporting facilities, is large in size, is unfavorable for carrying out live wiring operation on 10KV overhead lines in cities, has higher requirements on traffic conditions around construction sites or construction environments, the number of people participating in construction and the like, and is obviously not applicable to the basic-level live working groups of which each group is usually only 2 to 3 people.
In order to ensure the safety of live working and improve the high efficiency of live working, scientific researchers at home and abroad have conducted intensive studies and researches from different aspects, and although the researches solve the safety problem existing in the live working of workers to a certain extent, the researches of corresponding small and convenient fastening devices and adaptive hardware fittings are still not comprehensive enough and are to be improved.
Disclosure of Invention
The utility model aims to provide an automatic wire feeding connection insulation fastening device for distribution network lines. The automatic wire feeding, automatic connection, automatic fastening and automatic detachment modes and the corresponding adaptive hardware fittings are adopted, so that the operation mode that live working personnel must contact the live hardware fittings is avoided; the device can provide convenience for construction and installation of the line, improves construction speed and construction quality, ensures personal safety of constructors in the construction process, realizes the unhooking full-insulation operation of the constructors, can be applied to overlap joint of overhead transmission lines, and realizes high-efficiency, safe and stable work and consistency of construction quality of the electrified overlapping fitting of the distribution network line; meanwhile, personal injury events caused by false touch or induction arc are avoided in live working.
The technical scheme of the utility model is as follows: the utility model provides an automatic send line connection insulating fastener for joining in marriage net circuit, characterized by:
setting a bottom stabilizing frame; two screw rods are arranged on the bottom stabilizing frame; a screw rod fixer with a hook is arranged at the upper ends of the two screw rods; the hook is used for being connected with the electrified cable in a hanging mode; a driving-controlling module wrapped by a frame outer shell and a frame inner shell is arranged on the two screw rods in a penetrating way; a clamp assembly is arranged on the upper end surface of the frame shell; the two screw rods are rotatably arranged between the bottom stabilizing frame and the screw rod fixer to form a stable frame structure; the driving-control module positioned between the bottom stabilizing frame and the screw rod fixer is driven to ascend or descend along the direction limited by the two screw rods by synchronously driving the two screw rods to rotate forwards and backwards; clamping and fixing the bare wire end of the cable to be connected on a hardware fitting; the hardware fitting comprises a copper insert, an insulating sheet, a lower locking wire block, an upper locking wire block, a torque nut, a hardware fitting upper hook, jin Juzhou and a locking torsion spring which are arranged in a hardware fitting shell; wherein, a copper insert is arranged in the shell of the hardware fitting, and a metallic screw is arranged in the copper insert in a penetrating way; a torque nut is arranged at the lower end of the screw; the upper end of the screw is provided with a lower locking wire block and an upper locking wire block in turn in a vertically sliding manner, the upper end of the hardware shell is symmetrically provided with a pair of hardware shafts, and each hardware shaft is sleeved with a hardware upper hook and a locking torsion spring; an insulating sheet is arranged between the upper end of the screw and the lower locking wire block; a limiting frame is arranged on the upper end surface of the frame shell, and the hardware fitting is inserted and fixed in the limiting frame in a pluggable manner; in the driving-controlling module, a direct current motor is arranged, and an output shaft of the direct current motor is connected with a worm; the worm and a screw rod adopt a rotary connection mode to form a group of worm wheel-worm kinematic pairs; a torsion motor is arranged below the limiting frame; the torque motor and the limiting frame are arranged on the same central axis; the vertical central axes of the live cable, the cable to be connected, the clamp assembly, the limiting frame, the hardware fitting, the torsion motor and the hook are all located in the same vertical plane.
Further, after the torque motor in the driving-controlling module is started, the torque motor drives the torque nut to rotate, and then the screw arranged in the copper insert is driven to rotate, so that the lower locking wire block and the upper locking wire block which clamp the bare wire end of the cable to be connected are pushed to move upwards, when the pressure or clamping force of the upper hook of the hardware fitting and the upper locking wire block to the bare wire segment of the electrified cable reaches a set value, the torque nut is disconnected, and the torque motor simultaneously stops rotating, so that the automatic fastening function of the wiring fastening hardware fitting is realized.
In particular, the torque nut is made of an insulating material to isolate the possibility of electrical connection between the screw and the torque motor.
Specifically, the clamp assembly comprises a clamp seat and a torsion spring which are sleeved on the clamp shaft, and the clamp seat can be elastically rotated in two directions or turned in two directions under the action of the clamp shaft and the torsion spring.
Furthermore, a hardware fitting assembly signal switch is arranged on the limiting frame; an upper limit detection switch is arranged on the upper end surface of the frame outer shell or the frame inner shell; a lower limit switch is arranged on the lower end surface of the frame outer shell or the frame inner shell.
Specifically, the automatic wire feeding is connected with the insulating fastening device, and the starting of the direct current motor or the torsion motor is realized in a wireless remote control mode; the forward and reverse operation of the DC motor is stopped by the action of the upper limit switch and the lower limit switch.
Further, the lengths of the two screw rods, or the vertical distance between the bottom stabilizing frame and the screw rod fixer, are larger than the safety distance of the voltage class corresponding to the electrified cable.
Further, the worm drives one screw rod to rotate, and simultaneously drives the other screw rod to synchronously and equidirectionally rotate through the transmission belt.
According to the automatic wire feeding connection insulating fastening device disclosed by the technical scheme of the utility model, the live wire operation mode of 'automatic wire feeding' of a to-be-connected cable, 'automatic connection' between the to-be-connected cable and a live wire, automatic fastening 'of a wire fastening fitting, automatic separation' between the to-be-connected cable and a clamp assembly and 'automatic separation' of a live wire operation device from a wire connection operation position is replaced by the live wire operation mode of enabling operators to contact the live wire fitting.
Compared with the prior art, the utility model has the advantages that:
1. according to the technical scheme, aiming at the problems that in the current line construction process, the line fitting lap joint is required to be operated by bare hands, personal protection to constructors is lacked, and the like, through the solution based on the whole insulation, automation, miniaturization and portability fusion, the convenient, stable and safe construction mode aiming at live line wiring operation is realized, the construction quality can be ensured to be stable, the fitting is not loosened, the line operation is stable, the construction is not required to be contacted with the line by bare hands, and the safety of constructors is ensured
2. The technical scheme can be applied to live-line lapping operation of overhead transmission lines, realizes high efficiency, safety and stability of live-line lapping hardware operation of distribution network lines, and ensures consistency of construction quality;
3. by adopting the technical scheme, the safety of the live working of the line and the consistency of the construction quality can be greatly improved, and the operation mode of manually contacting live hardware tools in the live working can be replaced.
Drawings
FIG. 1 is a schematic view of the overall structure of the device of the present utility model;
FIG. 2 is a schematic view of the internal structure of the device of the present utility model;
fig. 3 is a schematic structural diagram of the hardware fitting of the present utility model;
FIG. 4 is a schematic view of the structure of the clamp assembly of the present utility model;
FIG. 5 is a schematic diagram of the position structure of the limit frame and the electromagnetic lock of the present utility model;
fig. 6 is a schematic diagram of the positional relationship of the limit frame, the electromagnetic lock and the hardware fitting assembly signal switch.
In the figure, 1 is a screw rod fixer, 2 is a hook, 3 is a live cable, 3-1 is a bare wire section of the live cable, 4 is a screw rod, 5 is a clamp component, 501 is a clamp shaft, 502 is a clamp seat, 503 is a torsion spring, 6 is a hardware fitting, 601 is a copper insert, 602 is an insulating sheet, 603 is a lower locking wire block, 604 is an upper locking wire block, 605 is a torque nut, 606 is a hardware fitting upper hook, 607 is a hardware fitting shaft, 608 is a locking torsion spring, 7 is a frame outer shell, 715 is a direct current motor, 716 is a worm, 721 is a limiting frame, 722 is a compression spring, 723 is a supporting pad, 724a and 724b are electromagnetic locks, 725 is a hardware fitting signal switch, 8 is a frame inner shell, 9 is a bottom stabilizing frame, 10 is a cable to be connected, and 10-1 is a bare wire end of the cable to be connected.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
In fig. 1 to 2, the automatic wire feeding connection insulation fastening device according to the present technical solution is at least composed of a screw rod fixer 1, a hook 2, a screw rod 3, a frame outer shell 7, a frame inner shell 8 and a bottom stabilizing frame 9.
Wherein, be provided with two lead screws 3 on the end stabilizing frame 9, be provided with the lead screw fixer 1 that has couple 2 in the upper end of two lead screws, run through on two lead screws and set up a drive-control module by frame shell 7 and frame inner shell 8 parcel, be provided with anchor clamps subassembly 5 at the up end of frame shell.
The two screw rods are rotatably arranged between the bottom stabilizing frame and the screw rod fixer to form a stable frame structure; meanwhile, two screw rods and a nut structure arranged in the driving-controlling module form two corresponding pairs of screw thread-screw rod kinematic pairs, and the driving-controlling module positioned between the bottom stabilizing frame and the screw rod fixer can be driven to ascend or descend along the direction limited by the two screw rods by synchronously driving the two screw rods to rotate in the forward and reverse directions.
The length of the two wires is larger than the safety distance (short for safety distance) of the voltage class corresponding to the electrified cable, so that an operator can hang the whole device on the electrified cable through a hook in a mode of holding the bottom stabilizing frame by hand outside the safety distance.
The bare wire end 10-1 of the cable to be connected 10 is clamped and fixed on one hardware fitting 6;
a limiting frame 721 is arranged on the upper end surface of the frame shell, and the hardware fitting is inserted and fixed in the limiting frame in a pluggable manner.
In the drive-control module, a dc motor 715 is provided to drive a worm 716 to rotate.
The worm drives one screw rod to rotate, and drives the other screw rod to synchronously rotate in the same direction through the transmission belt.
A torsion motor is arranged below the limiting frame, and the torsion motor and the limiting frame are coaxially arranged.
The longitudinal (vertical) central axes of the live cable, the clamp assembly, the limiting frame, the hardware fitting, the torsion motor and the hook are all located in the same vertical plane.
A pair of electromagnetic locks are arranged on two sides of the limiting frame in opposite directions, and the inclined planes of the lock tongues of the electromagnetic locks extend upwards into the limiting frame; the hardware fitting and the two lock bolts are correspondingly provided with a lock bolt hole respectively; when the electromagnetic lock is powered off, the lock tongue stretches out; when the hardware fitting is inserted into the limiting frame, the electromagnetic lock is in a power-off state, and the hardware fitting is fixed in the limiting frame through the extending lock tongue; when the electromagnetic lock is powered on, the lock tongue retracts; the hardware fitting in the limiting frame is ejected out under the upward pushing action of the compression spring and the supporting pad in the limiting frame.
The periphery of the hook, the screw rod, the limiting frame and the bottom stabilizing frame are provided with insulating layers; or the cable is made of insulating materials so as to ensure that all the parts contacted with the live cable or the cable to be connected are in an insulating state.
As shown in fig. 3, the hardware in the present technical solution includes a copper insert 601, an insulating sheet 602, a lower locking wire block 603, an upper locking wire block 604, a torque nut 605, a hardware upper hook 606, a hardware shaft 607, and a locking torsion spring 608, which are provided in a hardware housing;
specifically, a copper insert (actually a copper nut structure) is arranged in the shell of the hardware fitting, and a metal screw is arranged in the copper insert in a penetrating manner; the lower end of the screw is provided with a torque nut which is made of insulating materials so as to isolate the possibility of electric connection between the screw and the torque motor; the upper end of the screw is provided with a lower locking wire block and an upper locking wire block in turn in a vertically sliding manner, the upper end of the hardware shell is symmetrically provided with a pair of hardware shafts, and each hardware shaft is sleeved with a hardware upper hook and a locking torsion spring; an insulating sheet is arranged between the upper end of the screw and the lower locking wire block to isolate the possibility of electric connection between the upper end of the screw and the lower locking wire block.
As shown in fig. 4, the clamp assembly 5 in the present embodiment includes a clamping seat 502 and a torsion spring 503 sleeved on a clamp shaft 501, and the clamping seat can elastically rotate in both directions or elastically turn in both directions under the action of the clamp shaft and the torsion spring.
The clamp assembly is arranged in the technical scheme, so that the clamping points and clamping force of the cables to be connected are increased, the oblique pulling force generated on the hardware fitting due to the dead weight of the cables to be connected in operation is reduced, the hardware fitting is prevented from being skewed due to external force (mainly the dead weight of the cables to be connected), and the limit frame and the auxiliary structure are possibly damaged; the correct position relation among the hardware fitting, the limiting frame and the accessory structure is ensured, and the hardware fitting can be ejected out of the limiting frame smoothly.
In actual live working, the bare wire end 10-1 of the cable to be connected (at this time, the cable to be connected is in an uncharged state) is fixed on the hardware fitting 6, then the hardware fitting is inserted into the limiting frame 721 (see fig. 5), and under the action of the electromagnetic locks 724a and 724b (at this time, the electromagnetic locks are in a power-off state, and the inclined plane lock tongue extends out), the hardware fitting is fixed on the limiting frame.
By detecting whether the fitting assembly signal switch 725 (see fig. 6) provided on the stopper is actuated, downward insertion (or assembly) of the fitting can be ensured. Meanwhile, in the control logic, whether the hardware fitting is inserted in place or not can be judged by detecting whether the hardware fitting assembly signal switch acts or not, and the hardware fitting assembly signal switch is used as a prerequisite interlocking control condition for carrying out the next operation.
While the insulated section of the cable to be spliced is embedded on the clamp assembly 5 (see fig. 4).
The dc motor 715 is started to reverse, move the driving-controlling module to the lowest position, and locate at the upper end face of the bottom stabilizing frame (a lower limit detection switch is arranged at the lower end face of the frame outer shell or the frame inner shell, when the lower end face of the frame outer shell or the frame inner shell contacts with the upper end face of the bottom stabilizing frame), the lower limit detection switch acts, and outputs a lower limit signal to indicate that the whole driving-controlling module has moved to the lowest position.
The stripping operation is performed on the live cable so that a bare segment 3-1 of the live cable is formed at the position to be wired of the live cable.
The hook is connected (bridged) on the insulation section of the live cable, and the bare wire section 3-1 of the live cable is positioned between the two screw rods. At this time, the cable and the hardware fitting to be connected, together with the whole driving-control module, the frame outer shell, the frame inner shell and the bottom stabilizing frame, are hung on the electrified cable through the screw rod, the screw rod fixer and the hook, and can be loosened by both hands of an operator, and after the operator leaves the position to be connected to the outside of the safe distance, the subsequent electrified wiring operation is remotely controlled by operating the remote controller.
And starting the direct current motor to rotate positively to drive the driving-controlling module to ascend and drive the cable to be connected and the hardware fitting to ascend synchronously under the clamping of the clamp assembly and the limiting frame, so as to realize the function of automatically feeding the cable to be connected.
As the drive-control module rises below the bare wire segment of the live cable, the bare wire segment 3-1 of the live cable is embedded between the upper hardware hook 606 and the upper lock wire block 604 at the upper end of the hardware; due to the limitation of the locking torsion spring 608, the upper hook 606 of the fitting can only be turned down, but cannot be turned up (also called a unidirectional elastic rotatable structure), so as to prevent the bare wire section of the live cable from being pulled out of the fitting.
Meanwhile, as the hardware upper hook in the hardware adopts the unidirectional elastic rotatable structure, the phenomenon of ignition generated when the hardware contacts with the exposed section of the electrified cable is avoided.
An upper limit detection switch is arranged on the upper end face of the frame outer shell or the frame inner shell, and when the driving-control module moves to the lower end face of the screw rod fixer, the upper limit detection switch acts to indicate that the driving-control module has moved to the uppermost position of the movable range so as to ensure that the bare line segment of the electrified cable is reliably embedded in the hardware fitting, thereby realizing the function of 'automatic connection' between the cable to be connected and the electrified cable.
The torque motor in the driving-controlling module (located below the limiting frame, the torque motor and the limiting frame are coaxially arranged), the torque motor drives the torque nut 605 (see fig. 3) to rotate, and then drives the screw arranged in the copper insert 601 to rotate (the copper insert and the screw form a screw-nut kinematic pair), the lower locking wire block 603 and the upper locking wire block 604 which clamp the bare wire end of the cable to be connected are pushed to move upwards, when the pressure (or clamping force) of the upper hook 606 of the hardware fitting and the upper locking wire block 604 to the bare wire end of the electrified cable reaches a set value, the torque nut 605 is disconnected, and the torque motor stops rotating at the same time, so that the automatic fastening function of the wiring fastening hardware fitting is realized.
The torque nut structure is adopted in the technical scheme, so that the consistency of construction standards (clamping force to cables) can be maintained, the difference in hardware clamping force caused by the arm strength of constructors is avoided, and the standardization of construction operation is facilitated. Meanwhile, due to the unification and constancy of the clamping force of the hardware fitting, the heating phenomenon caused by the fact that the clamping force between the hardware fitting and the electrified cable does not reach the standard can be avoided.
In the present technical solution, the movement of the lower locking wire block 603 and the upper locking wire block 604 of the hardware fitting is realized by the screws arranged in the copper insert, and another layer of functions are also implied: when the physical connection between the live cable and the to-be-connected cable needs to be released, a socket wrench can be adopted to reversely rotate the screw, so that the to-be-connected cable 10 can be separated from the hardware fitting 6, and the detachable function of the to-be-connected cable is realized.
Referring to fig. 5, the electromagnetic locks 724a and 724b located below the limiting frame are powered, the inclined plane bolts of the two electromagnetic locks automatically retract, the hardware fitting located in the limiting frame is ejected out under the upward pushing action of the compression spring 722 and the supporting pad 723 located in the limiting frame, and is separated from the whole automatic wiring device, and the whole to-be-connected cable and the hardware fitting are firmly fixed on the exposed section of the live cable, and at this time, the hardware fitting with the to-be-connected cable bare end is firmly clamped on the bare line section of the live cable.
By setting or adjusting different radian curves between the lower locking wire block 603 and the upper locking wire block 604 and between the upper locking wire block 604 and the hardware upper hook 606, the wiring and fastening requirements of different wire diameters can be met.
And starting the direct current motor to reversely rotate to drive the driving-controlling module to wholly move downwards.
Because the clamping seat 502 in the clamp assembly can elastically rotate in two directions (namely, elastically rotate upwards or downwards around the clamp shaft 501), when the upward tensile force generated by the cables to be connected embedded in the clamp assembly after the bare wire ends of the cables are fixed on the live cables by the hardware fittings is larger than the torsion force of the torsion spring 503, the two clamping seats elastically rotate upwards, so that the cables to be connected are automatically separated from the two clamping seats, and then the two clamping seats automatically reset under the action of the torsion spring, so that the automatic separation between the cables to be connected and the clamp assembly is realized.
When the rack outer shell and the rack inner shell move downwards to the upper part of the bottom stabilizing frame, a lower limit switch arranged on the lower end face of the rack outer shell/the rack inner shell is triggered, the direct current motor stops rotating, and the driving-control module stops moving downwards, so that the automatic separation function of the live wire working device from a wire working position is realized.
And taking down the hook from the insulation section of the live cable, and ending the whole live wiring operation.
Through implementation of the technical scheme, the automatic wire feeding of the to-be-connected cable, the automatic connection between the to-be-connected cable and the live-wire cable, the automatic fastening of the wire fastening hardware fitting, the automatic separation between the to-be-connected cable and the clamp assembly and the live-wire working mode of automatic separation of the live-wire working device from the wire working position are realized, and the operation mode that live-wire working personnel must contact the live-wire hardware fitting can be completely replaced.
Because the starting of the direct current motor or the torsion motor is realized by adopting a wireless remote control mode and the limit switch is adopted to limit and control the moving range of the moving part, the specific implementation mode, the control principle or the control circuit of the device belong to the prior art, and are not described here.
Because the automatic wiring device in the technical scheme has a simple structure, the whole dead weight is light (the whole weight of the battery is not more than 10 kg), and the operation actions needing manual participation are the actions of hanging the whole automatic wiring device on a live cable and taking the whole automatic wiring device in a non-live state off the live cable, and no operation action or operation process that live working personnel have to directly live contact with hardware fittings is needed. Therefore, the required working space and working field are small, the requirement on the surrounding working environment is low, and the method is particularly suitable for the on-site live wire connection operation of a basic line live wire working team consisting of 2 to 3 persons.
After the technical scheme is adopted, as the contact between the to-be-connected cable and the electrified cable is carried out under an unmanned state (namely, constructors are beyond a safe distance and do not directly contact the wiring positions of the to-be-connected cable and the electrified cable), the situation that the constructors are possibly damaged by the spark or spark generated when the to-be-connected cable is contacted with the electrified cable when the earth fault exists in the to-be-connected cable can be avoided, and the safety of electrified wiring operation is improved.
By adopting the technical scheme, except the operation of peeling the insulating section of the electrified cable to form a section of bare wire section (the operation can be performed by adopting the insulating operation rod with the peeling knife), the electrified lapping and electrified wiring of the whole wire feeding and line fitting and the detachment process of the automatic wiring device are automatically completed by the automatic wire feeding and connecting insulating fastening device, and the electrified contact or electrified operation is not required by operators, so that the constructors can realize the operation of completely insulating by hands, and the consistency of the work efficiency, safety, stability and construction quality of the electrified lapping fitting of the distribution network line is realized; meanwhile, personal injury events caused by false touch or induction arc can be effectively avoided in live working.
The utility model can be widely applied to the field of design and manufacture of overhead line connecting devices.
Claims (9)
1. An automatic wire feeding, connecting and insulating fastening device for distribution network lines is characterized in that:
setting a bottom stabilizing frame;
two screw rods are arranged on the bottom stabilizing frame;
a screw rod fixer with a hook is arranged at the upper ends of the two screw rods;
the hook is used for being connected with the electrified cable in a hanging mode;
a driving-controlling module wrapped by a frame outer shell and a frame inner shell is arranged on the two screw rods in a penetrating way;
a clamp assembly is arranged on the upper end surface of the frame shell;
the two screw rods are rotatably arranged between the bottom stabilizing frame and the screw rod fixer to form a stable frame structure;
the driving-control module positioned between the bottom stabilizing frame and the screw rod fixer is driven to ascend or descend along the direction limited by the two screw rods by synchronously driving the two screw rods to rotate forwards and backwards;
clamping and fixing the bare wire end of the cable to be connected on a hardware fitting;
the hardware fitting comprises a copper insert, an insulating sheet, a lower locking wire block, an upper locking wire block, a torque nut, a hardware fitting upper hook, jin Juzhou and a locking torsion spring which are arranged in a hardware fitting shell;
wherein, a copper insert is arranged in the shell of the hardware fitting, and a metallic screw is arranged in the copper insert in a penetrating way; a torque nut is arranged at the lower end of the screw; the upper end of the screw is provided with a lower locking wire block and an upper locking wire block in turn in a vertically sliding manner, the upper end of the hardware shell is symmetrically provided with a pair of hardware shafts, and each hardware shaft is sleeved with a hardware upper hook and a locking torsion spring; an insulating sheet is arranged between the upper end of the screw and the lower locking wire block;
a limiting frame is arranged on the upper end surface of the frame shell, and the hardware fitting is inserted and fixed in the limiting frame in a pluggable manner;
in the driving-controlling module, a direct current motor is arranged, and an output shaft of the direct current motor is connected with a worm;
the worm and a screw rod adopt a rotary connection mode to form a group of worm wheel-worm kinematic pairs;
a torsion motor is arranged below the limiting frame; the torque motor and the limiting frame are arranged on the same central axis;
the vertical central axes of the live cable, the cable to be connected, the clamp assembly, the limiting frame, the hardware fitting, the torsion motor and the hook are all located in the same vertical plane.
2. The automatic wire feeding connection insulation fastening device for the distribution network line according to claim 1, wherein after the torque motor in the driving-controlling module is started, the torque motor drives the torque nut to rotate, and further drives the screw arranged in the copper insert to rotate, so that the lower wire locking block and the upper wire locking block which clamp the bare wire end of the cable to be connected are pushed to move upwards, when the pressure or clamping force of the upper hook and the upper wire locking block of the hardware fitting to the bare wire end of the electrified cable reaches a set value, the torque nut is disconnected, and the torque motor stops rotating at the same time, thereby realizing the function of 'automatic fastening' of the wiring fastening hardware fitting.
3. An automatic wire feeding connection insulating fastening device for a distribution network line according to claim 1, wherein the torque nut is made of insulating material to isolate the possibility of electrical coupling between the screw and the torque motor.
4. The automatic wire feeding connection insulation fastening device for the distribution network line according to claim 1, wherein the clamp assembly comprises a clamp seat and a torsion spring sleeved on a clamp shaft, and the clamp seat can elastically rotate in two directions or elastically turn in two directions under the action of the clamp shaft and the torsion spring.
5. The automatic wire-feeding connection insulating fastening device for a distribution network line according to claim 1, wherein a hardware fitting assembly signal switch is arranged on the limiting frame; an upper limit detection switch is arranged on the upper end surface of the frame outer shell or the frame inner shell; a lower limit switch is arranged on the lower end surface of the frame outer shell or the frame inner shell.
6. The automatic wire feeding and connecting insulating and fastening device for the distribution network line according to claim 1, wherein the automatic wire feeding and connecting insulating and fastening device adopts a wireless remote control mode to realize the starting of a direct current motor or a torsion motor; the forward and reverse operation of the DC motor is stopped by the action of the upper limit switch and the lower limit switch.
7. The automatic wire-feeding connection insulation fastening device for a distribution network line according to claim 1, wherein the length of the two wire rods, or the vertical distance between the bottom stabilizing frame and the wire rod holder, is greater than the safety distance of the corresponding voltage class of the live cable.
8. The automatic wire feeding connection insulation fastening device for a distribution network line according to claim 1, wherein the worm drives one screw rod to rotate, and simultaneously drives the other screw rod to synchronously and equidirectionally rotate through a transmission belt.
9. The automatic wire feeding connection insulating fastening device for a distribution network line according to claim 1, wherein the automatic wire feeding connection insulating fastening device replaces a live wire mode in which an operator must contact the live wire fitting by an automatic wire feeding of a to-be-connected cable, an automatic connection between the to-be-connected cable and the live wire, an automatic fastening of a wire fastening fitting, an automatic separation between the to-be-connected cable and a clamp assembly, and an automatic separation of the live wire working device from a wire working place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111468226.0A CN114336404B (en) | 2021-12-03 | 2021-12-03 | Automatic wire feeding, connecting and insulating fastening device for distribution network line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111468226.0A CN114336404B (en) | 2021-12-03 | 2021-12-03 | Automatic wire feeding, connecting and insulating fastening device for distribution network line |
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| Publication Number | Publication Date |
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| CN114336404A CN114336404A (en) | 2022-04-12 |
| CN114336404B true CN114336404B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111468226.0A Active CN114336404B (en) | 2021-12-03 | 2021-12-03 | Automatic wire feeding, connecting and insulating fastening device for distribution network line |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115864234A (en) * | 2022-12-07 | 2023-03-28 | 贵州电网有限责任公司 | Line live lapping wire feeding device |
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| CN103683091A (en) * | 2013-11-18 | 2014-03-26 | 重庆市电力公司永川供电局 | Remote wire clamp live working assembly and disassembly rod |
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| CN105140675A (en) * | 2013-07-26 | 2015-12-09 | 江苏省电力公司常州供电公司 | Ground potential working non-bearing continuous wire clamp capable of improving work efficiency |
| CN103683091A (en) * | 2013-11-18 | 2014-03-26 | 重庆市电力公司永川供电局 | Remote wire clamp live working assembly and disassembly rod |
| CN107516848A (en) * | 2017-09-04 | 2017-12-26 | 李大川 | A kind of municipal cable stringer |
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