CN114336404A - 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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- CN114336404A CN114336404A CN202111468226.0A CN202111468226A CN114336404A CN 114336404 A CN114336404 A CN 114336404A CN 202111468226 A CN202111468226 A CN 202111468226A CN 114336404 A CN114336404 A CN 114336404A
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Abstract
An automatic wire feeding, connecting and insulating fastening device for a distribution network line belongs to the field of electrical connection devices. Arranging 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 end of the two screw rods; a driving-control module wrapped by a rack outer shell and a rack inner shell is arranged on the two screw rods in a penetrating way; a clamp assembly is arranged on the upper end face of the frame shell; arranging a clamping type fixing hardware fitting at the bare wire end of the cable to be connected; a limiting frame is arranged on the upper end face of the frame shell, a direct current motor is arranged in the driving-control module, 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; a torsion motor is arranged below the limiting frame. The live-line wiring mode of automatic wire feeding, automatic connection, automatic fastening, automatic separation and automatic separation is adopted, the live-line wiring mode that an operator must contact a live-line hardware fitting is replaced, and the wiring quality is guaranteed.
Description
Technical Field
The invention belongs to the field of electrical connection devices, and particularly relates to a connection insulation fastening device for an overhead line.
Background
The line that directly supplies power to the user is called a distribution line, and the network formed by the distribution lines is called a distribution network, which is called a distribution network for short, or a distribution network.
Distribution lines are important facilities for bearing the task of transmitting power in a power system, and the transmission lines are distributed in a wide area in geography, are large in quantity and various in variety, and have rapid change of operation states.
Along with the development of times, people have higher and higher requirements on electric power, the improvement construction management of distribution network lines is enhanced, and the method has very important significance on the safe operation of the distribution network lines.
In recent years, in order to cooperate with a series of measures such as increasing the power grid transformation strength, optimizing the operator environment, improving the distribution network uninterrupted operation management and the like, uninterrupted operation is an important part in a 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 the key for ensuring the safe and reliable operation of the power system. Moreover, the transmission lines are distributed in a wide area in geography, the number of the transmission lines is large, the transmission lines are various, the operation state changes rapidly, and the construction workload is correspondingly very large. In the operation process of each connecting hardware fitting of the line, under the large environment of guaranteeing and reducing the outage rate (power supply departments in many cities already make service commitments that the outage time does not exceed XX minutes), the popularization rate of live working projects can be greatly increased, and the corresponding workload can be larger.
At present, most of the existing line fittings are directly contacted by a front-line constructor through insulating gloves by bare hands, and the hidden danger of mistaken contact of the constructor exists. According to statistics, a large part of live working construction is related to an operation mode that a live worker has to contact a live fitting.
At present, under the large environment that the outage rate is reduced, the power supply reliability is improved and the requirement for live-line construction is increasing day by day, a set of live-line operation tool and an adaptive hardware fitting which are convenient to carry, efficient in construction, safe, stable and strong in construction environment adaptability are urgently researched and developed.
The utility model discloses a practical novel patent of 6 months 10 days in 2009 on the date of the bulletin of granting, the publication number is CN 201256263Y, discloses an electrified binding of gold utensil bolt, and it is a long-range extension knot of swing joint on torque wrench afterbody round handle, and insulating bar top and long-range extension knot hookup near torque wrench working head hookup another insulating bar. The bolt fastening device is used for fastening bolts of hardware fittings such as a stockbridge damper and a wire clamp at the ground potential (on a rod tower), can ensure that the screw tightness reaches the specified standard, has short operation construction time and high safety factor, and can change equipotential operation construction into a ground potential construction mode. However, it requires two hands of the constructor, and obviously cannot be implemented on the overhead line or the transmission tower.
The application publication date is 2019, 7 and 5, and the application publication number is CN 109980381A, and discloses an electrical connection fitting and a method thereof, wherein 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 chute for the wire clamping clip to slide, and a second groove which is used for placing a lead and is matched with the first groove is arranged on a hardware fitting base at the bottom of the hardware fitting body; the bolt sequentially penetrates through a bolt hole in the hardware fitting base and a bolt hole in the wire clamping clamp from bottom to top; the spring is sleeved outside the bolt, the bolt is screwed to compress to control the distance between the hardware fitting base and the wire clamping clip, and the spring is propped between the wire clamping clip and the hardware fitting base. The invention can solve the problems that when the distribution line works in a hot-line manner, the mechanical arm with the robot is easy to lap the overhead line and the lead in a hot-line manner, and the mechanical arm can be separated from the connecting hardware after lap joint, so that the connecting fastening hardware (called 'hardware' for short) replaces the existing wire connecting clamp; the robot has certain mechanical strength and current conduction capability, and can safely operate for a long time after the robot is in electrified lap joint. The technical scheme needs to be operated by electrified robots, the whole set of live working system needs a plurality of supporting facilities and is large in size, the live working system is not beneficial to implementation of live wiring operation on 10KV overhead lines in cities, the requirements on traffic conditions or construction environments around construction sites, the number of people participating in construction and the like are high, and the technical scheme is obviously inapplicable to basic-level live working teams and groups with only 2 to 3 people per group.
In order to ensure the safety of live working and improve the high efficiency of live working, researchers at home and abroad have conducted intensive research and study from different aspects, and although the research solves the safety problem of live working of workers to a certain extent, the research on corresponding small and convenient fastening devices and adaptive hardware fittings is still not comprehensive and needs to be improved.
Disclosure of Invention
The invention aims to solve the technical problem of providing an automatic wire feeding, connecting and insulating fastening device for a distribution network line. The automatic wire feeding, automatic connection, automatic fastening and automatic separation modes and the corresponding fitting are adopted, so that the operation mode that live working personnel must contact the live fitting is avoided; the use of the device can provide convenience for line construction and installation, improve the construction speed and construction quality, ensure the personal safety of constructors in the construction process, realize the hands-free full-insulation operation of the constructors, be applied to the lap joint of overhead transmission lines and realize the high efficiency, safety, stability and consistency of construction quality of the electrified lap joint hardware fitting of the distribution network lines; meanwhile, the occurrence of personal injury events caused by 'mistaken touch' or induction electric arc is avoided in live working.
The technical scheme of the invention is as follows: the utility model provides an automatic send line to connect insulating fastener for joining in marriage net twine way which 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 end of the two screw rods; the hook is used for being connected with a live cable in a suspension mode; a driving-control module wrapped by a rack outer shell and a rack inner shell is arranged on the two screw rods in a penetrating way; a clamp assembly is arranged on the upper end face 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-shaped structure; the driving-control module between the bottom stabilizing frame and the screw rod fixer is driven to move up or down along the direction limited by the two screw rods by synchronously driving the two screw rods to rotate forwards and reversely; arranging a clamping type fixed hardware fitting at a bare wire end of a cable to be connected; a limiting frame is arranged on the upper end face of the frame shell, and the hardware fitting can be inserted and fixed in the limiting frame in a plugging manner; 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 the screw rod adopt a rotary connection mode to form a group of worm gear-worm kinematic pairs; a torsion motor is arranged below the limiting frame; the torsion motor and the limiting frame are arranged on the same central axis; the electrified cable, the cable to be connected, the clamp assembly, the limiting frame, the hardware fitting, the torsion motor and the vertical central axis of the hook are all located in the same vertical plane.
The hardware comprises a copper insert, an insulating sheet, a lower wire locking block, an upper wire locking block, a torque nut, an upper hardware hook, a hardware shaft and a locking torsion spring, wherein the copper insert, the insulating sheet, the lower wire locking block, the upper wire locking block, the torque nut, the upper hardware hook, the hardware shaft and the locking torsion spring are arranged in a hardware shell; the hardware fitting comprises a shell, a copper insert, a screw, a nut and a bolt, wherein the shell of the hardware fitting is internally provided with the copper insert, and the copper insert is internally provided with a metal screw in a penetrating manner; a torque nut is arranged at the lower end of the screw; the upper end of the screw is sequentially provided with a lower wire locking block and an upper wire locking block in a vertically sliding manner, the upper end of the hardware fitting shell is symmetrically provided with a pair of hardware shafts, and each hardware fitting shaft is sleeved with a hardware fitting upper hook and a locking torsion spring; an insulating sheet is arranged between the upper end of the screw and the lower wire locking block.
Furthermore, after a torsion motor in the driving-control module is started, the torsion motor drives a torque nut to rotate, so as to drive a screw arranged in the copper insert to rotate, push a lower wire locking block and an upper wire locking block which clamp a bare wire end to be connected with a cable to move upwards, and when the pressure or clamping force of an upper hook and the upper wire locking block of the hardware on the bare wire section of the electrified cable reaches a set value, the torque nut is disconnected, and the torsion motor stops rotating at the same time, so that the 'automatic fastening' function of the wiring fastening hardware is realized.
Specifically, the torque nut is made of an insulating material so as to isolate the possibility of electric connection between the screw and the torque motor.
Specifically, the clamp assembly comprises a clamp seat and a torsion spring, wherein the clamp seat and the torsion spring are 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.
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 rack outer shell or the rack inner shell; a lower limit switch is arranged on the lower end face of the rack outer shell or the rack inner shell.
Specifically, the automatic wire feeding is connected with the insulating fastening device, and the starting of the direct current motor or the torque 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 and lower limit switches.
Further, the length of the two screw rods, or the vertical distance between the bottom stabilizing frame and the screw rod fixer is larger than the safe distance of the electrified cable corresponding to the voltage level.
Furthermore, the worm drives one screw rod to rotate, and meanwhile, the other screw rod is driven to synchronously rotate in the same direction through the transmission belt.
The automatic wire feeding connection insulation fastening device provided by the technical scheme of the invention replaces a live wire connection mode that an operator has to contact with a live wire fitting by a live wire connection operation mode that the cable to be connected is automatically fed, the cable to be connected is automatically connected with the live cable, the wire connection fastening fitting is automatically fastened, the cable to be connected is automatically separated from a clamp assembly, and the live wire connection operation device is automatically separated from a wire connection operation position.
Compared with the prior art, the invention has the advantages that:
1. this technical scheme is to in the present line work progress, the overlap joint of circuit gold utensil needs to be through bare-handed operation, lacks the personal protection scheduling problem to constructor, through based on full insulation, and is automatic, and is miniaturized, and the solution that the portable integration is unified has realized convenient, stable, safe construction mode to live-line wiring operation to can ensure construction quality stability, accomplish that the gold utensil does not loosen and takes off, the circuit operation is stable, and the construction need not bare-handed contact circuit, ensures constructor safety
2. The technical scheme can be applied to live lapping operation of overhead transmission lines, so that the live lapping hardware fitting of the distribution network line is efficient, safe and stable in work, and the consistency of construction quality is ensured;
3. by adopting the technical scheme, the safety of live-wire work of the line and the consistency of construction quality can be greatly improved, and further, the operation mode of manually contacting the live-wire hardware fitting in the live-wire work can be replaced.
Drawings
FIG. 1 is a schematic view of the overall structure of the apparatus of the present invention;
FIG. 2 is a schematic view of the internal structure of the apparatus of the present invention;
FIG. 3 is a schematic structural diagram of the hardware of the present invention;
FIG. 4 is a schematic structural view of the clamp assembly of the present invention;
FIG. 5 is a schematic view of the position structure of the position limiting frame and the electromagnetic lock according to the present invention;
FIG. 6 is a schematic diagram showing the position relationship among the limiting frame, the electromagnetic lock and the hardware fitting assembling signal switch according to the present invention.
In the figure, 1 is a lead screw fixer, 2 is a hook, 3 is a live cable, 3-1 is a bare wire section of the live cable, 4 is a lead screw, 5 is a clamp assembly, 501 is a clamp shaft, 502 is a clamp base, 503 is a torsion spring, 6 is a hardware, 601 is a copper insert, 602 is an insulating sheet, 603 is a lower wire locking block, 604 is an upper wire locking block, 605 is a torque nut, 606 is a hardware upper hook, 607 is a hardware shaft, 608 is a locking torsion spring, 7 is a rack 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 assembly signal switch, 8 is a rack 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 invention 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 at least comprises a screw rod fixer 1, a hook 2, a screw rod 3, a rack outer shell 7, a rack inner shell 8, and a bottom stabilizing frame 9.
Wherein, two screw rods 3 are arranged on the bottom stabilizing frame 9, a screw rod fixer 1 with a hook 2 is arranged at the upper end of the two screw rods, a driving-controlling module wrapped by a frame outer shell 7 and a frame inner shell 8 is arranged on the two screw rods in a penetrating way, and a clamp assembly 5 is arranged on the upper end surface of the frame outer shell.
The two screw rods are rotatably arranged between the bottom stabilizing frame and the screw rod fixer to form a stable frame-shaped structure; meanwhile, two screw rods and a nut structure arranged in the driving-controlling module form two corresponding 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 move up or down along the direction limited by the two screw rods by synchronously driving the two screw rods to rotate forwards and backwards.
The length of two root length of silk is greater than the safe distance (being called for short safe distance) of electrified cable corresponding voltage level for the operator can be outside safe distance, with the mode of handheld end steady rest, through the couple, with whole device "hang" to electrified cable on.
The bare wire end 10-1 to be connected with the cable 10 is clamped and fixed on a hardware fitting 6;
the upper end face of the frame shell is provided with a limiting frame 721, and the hardware fitting can be inserted and fixed in the limiting frame.
In the drive-control module, a dc motor 715 is provided to rotate a worm 716.
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 arranged coaxially.
The longitudinal (vertical) central axis of the electrified 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 oppositely arranged on two sides of the limiting frame, and the inclined surfaces of the lock tongues of the electromagnetic locks extend upwards into the limiting frame; lock tongue holes are correspondingly arranged at the parts of the hardware fitting corresponding to the two lock tongues respectively; when the electromagnetic lock loses power, the lock tongue extends out; when the hardware is inserted into the limiting frame, the electromagnetic lock is in a power-off state, and the hardware is fixed in the limiting frame through the extending lock tongue; when the electromagnetic lock is powered on, the lock tongue retracts; under the upward pushing action of the compression spring and the supporting pad in the limiting frame, the hardware fitting in the limiting frame is ejected out.
Insulating layers are arranged on the periphery of the hook, the screw rod, the limiting frame and the bottom stabilizing frame; or all the parts are made of insulating materials so as to ensure that all the parts which are in contact 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 insulation sheet 602, a lower wire locking block 603, an upper wire locking block 604, a torque nut 605, an upper hardware hook 606, a hardware shaft 607, and a locking torsion spring 608, which are disposed in a casing of the hardware;
specifically, a copper insert (actually, a copper nut structure) is arranged in a 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 a torque motor; the upper end of the screw is sequentially provided with a lower wire locking block and an upper wire locking block in a vertically sliding manner, the upper end of the hardware fitting shell is symmetrically provided with a pair of hardware shafts, and each hardware fitting shaft is sleeved with a hardware fitting upper hook and a locking torsion spring; an insulating sheet is arranged between the upper end of the screw and the lower wire locking block to isolate the possibility of electric connection between the upper end of the screw and the lower wire locking block.
As shown in fig. 4, the clamp assembly 5 in the present embodiment includes a clamp seat 502 and a torsion spring 503, which are sleeved on a clamp shaft 501, and the clamp seat can elastically rotate or turn in two 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 the clamping force of the cable to be connected are increased, the oblique tension on the hardware fitting caused by the dead weight of the cable to be connected in the operation is reduced, and the damage to the limiting frame and the accessory structure caused by the hardware fitting deflection caused by external force (mainly the dead weight of the cable to be connected) is avoided; the correct position relation among the hardware fitting, the limiting frame and the accessory structure is ensured, and the hardware fitting can be smoothly ejected out of the limiting frame.
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, 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 tongues of the electromagnetic locks extend out), the hardware fitting is fixed on the limiting frame.
By detecting whether the hardware fitting assembly signal switch 725 (shown in fig. 6) disposed on the limiting frame is actuated, it is possible to ensure that the hardware fitting is inserted (or assembled) downward in place. Meanwhile, in the control logic, whether the hardware is inserted in place can be judged by detecting whether the hardware assembling signal switch acts, and the condition is used as a prerequisite interlocking control condition for the next operation.
While the insulated section of the cable to be spliced is inserted onto the clamp assembly 5 (see fig. 4).
The dc motor 715 is turned on to move the drive-control module to the lowermost position, which is located at the upper end surface of the bottom stabilizer (a lower limit detection switch is disposed on the lower end surface of the rack outer shell or the rack inner shell, and when the lower end surface of the rack outer shell or the rack inner shell contacts the upper end surface of the bottom stabilizer, the lower limit detection switch acts to output a lower limit signal indicating that the entire drive-control module has moved to the lowermost position).
And (3) carrying out peeling operation on the live cable so that a bare wire section 3-1 of the live cable is formed at the position of the live cable to be connected.
The hook is hooked (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 the moment, the cable to be connected, the hardware fitting, the whole driving-control module, the rack outer shell, the rack inner shell and the bottom stabilizing frame are hung on the live cable through the lead screw, the lead screw fixer and the hook, an operator can loosen both hands, and after the operator leaves the part to be connected to the wire to a distance beyond a safe distance, the operator operates the remote controller to carry out remote control operation on subsequent live wire connection operation.
The direct current motor is started to rotate positively to drive the driving-control module to ascend, so as to drive the cable to be connected and the hardware fitting to ascend synchronously under the clamping of the clamp assembly and the limiting frame, and the function of 'automatic wire feeding' of the cable to be connected is realized.
As the driving-control module rises to the lower part of the bare wire section of the live cable, the bare wire section 3-1 of the live cable is embedded between the hardware upper hook 606 and the upper wire block 604 at the upper end of the hardware; due to the limitation of the locking torsion spring 608, the hardware upper hook 606 can only be turned downwards and cannot be turned upwards (also referred to as a one-way elastic rotatable structure) to prevent the bare wire section of the live cable from being pulled out of the hardware.
Meanwhile, the hardware fitting in the hardware fitting is hooked by a one-way elastic rotatable structure, so that the phenomenon of 'striking sparks' of the hardware fitting when the hardware fitting is in contact with the exposed section of the live cable is avoided.
An upper limit detection switch is arranged on the upper end face of the rack outer shell or the rack 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 that the bare wire section of the live cable is reliably embedded in the hardware fitting, and the function of automatic connection between the cable to be connected and the live cable is realized.
Starting a torsion motor (located below the limiting frame and coaxially arranged with the limiting frame) in the driving-control module, the torsion motor drives a torque nut 605 (shown in fig. 3) to rotate, and further drives a screw arranged in a copper insert 601 to rotate (the copper insert and the screw form a screw-nut kinematic pair), so as to push a lower wire locking block 603 and an upper wire locking block 604 which clamp a bare wire end of a cable to be connected to move upwards, when the pressure (or called clamping force) of an upper hook 606 and the upper wire locking block 604 on the bare wire section of the electrified cable reaches a set value, the torque nut 605 is disconnected, and the torsion motor stops rotating at the same time, thereby realizing the 'automatic fastening' function of the wiring fastening hardware.
Adopt the torque nut structure in this technical scheme, can keep the uniformity of construction standard (to the centre gripping dynamics of cable), avoided the difference in the gold utensil centre gripping dynamics that brings because of constructor's arm strength size, help the standardization of construction operation. Meanwhile, the clamping force of the hardware fitting is uniform and constant, so that the heating phenomenon caused by the fact that the clamping force does not reach the standard between the hardware fitting and the live cable can be avoided.
In this technical scheme, the movement of the lower wire locking block 603 and the upper wire locking block 604 of the hardware is realized by screws arranged in the copper insert, and another layer of functions is also implied: when the physical connection between the live cable and the cable to be connected needs to be released, the socket wrench can be adopted to reversely rotate the screw, so that the cable 10 to be connected can be separated from the hardware fitting 6, and the detachable function of the cable to be connected is realized.
Referring to fig. 5, the electromagnetic locks 724a and 724b under the limiting frame are powered, the inclined locking tongues of the two electromagnetic locks automatically retract, the hardware fitting in the limiting frame is ejected out under the upward pushing action of the compression spring 722 and the supporting pad 723 in the limiting frame, the hardware fitting is separated from the whole automatic wiring device, the whole cable to be connected and the hardware fitting are stably fixed on the exposed section of the live cable, and at the moment, the hardware fitting with the bare end of the cable to be connected is firmly clamped on the bare section of the live cable.
Different radian curves between the lower wire locking block 603 and the upper wire locking block 604 and between the upper wire locking block 604 and the hardware fitting upper hook 606 are set or adjusted, so that the requirements on wire connection and fastening of different wire diameters can be met.
And starting the direct current motor to reversely rotate to drive the driving-control module to integrally move downwards.
Because the clamping seats 502 in the clamp assembly can elastically rotate in two directions (namely, the clamping seats elastically rotate upwards or downwards around the clamp shaft 501), when the upward pulling force generated after the cable to be connected embedded in the clamp assembly is fixed on the live cable by hardware fittings is larger than the torsion force of the torsion spring 503, the two clamping seats elastically rotate upwards, so that the cable to be connected is automatically separated from the two clamping seats, and then the two clamping seats automatically reset under the action of the torsion spring, and the 'automatic separation' between the cable to be connected and the clamp assembly is realized.
When the frame outer shell and the frame inner shell move downwards to the upper part of the bottom stabilizing frame, the lower limit switch arranged on the lower end face of the frame outer shell/the frame inner shell is triggered, the direct current motor stops rotating, the driving-controlling module stops moving downwards, and the function of 'automatic separation' of the live-wire connecting operation device from a wire connecting operation position is further realized.
And taking down the hook from the insulation section of the live cable, and finishing the whole live wiring operation.
Through the implementation of the technical scheme, the live-wire connection operation mode that the cable to be connected automatically sends wires, the cable to be connected automatically connects with the live cable, the wire connection fastening fitting automatically fastens, the cable to be connected automatically separates from the clamp assembly and the live-wire connection operation device automatically separates from the wire connection operation position is realized, and the operation mode that live-wire operators must contact with the live-wire fitting can be completely replaced.
Because the starting of the direct current motor or the torque motor is realized by adopting a wireless remote control mode, and the limit control of the moving range of the moving part is realized by adopting the limit switch, which belong to the prior art, the specific realization mode, the control principle or the control circuit thereof are not described herein.
Because the automatic wiring device in the technical scheme has a simple structure and light whole dead weight (the whole weight including the battery is not more than 10 kilograms), the operation actions needing manual participation are two actions of hanging the whole automatic wiring device on a live cable and taking the automatic wiring device in a non-live state off the live cable, and no operation action or operation process that live workers need to directly contact with a hardware tool in a live way exists. Therefore, the required working space and working site are both small, the requirement on the surrounding working environment is not high, and the device is particularly suitable for carrying out on-site live-wire wiring operation on a basic-level live-wire working team consisting of 2 to 3 people.
After the technical scheme is adopted, because the contact between the cable to be connected and the live cable is carried out in an 'unmanned' state (namely, the constructor is out of a safe distance and does not directly contact the connection part of the cable to be connected and the live cable), the damage to the constructor caused by the 'spark' or 'ignition' phenomenon when the cable to be connected is in contact with the live cable can be avoided in case of the ground fault of the cable to be connected, and the safety of live connection operation is improved.
By adopting the technical scheme, except for the operation of peeling the insulating section of the electrified cable to form a bare section (which can be performed by adopting an insulating operating rod with a peeling knife), the whole wire feeding, the live lapping of the line hardware fitting, the live wiring and the separation process of the automatic wiring device are automatically completed by the automatic wire feeding connection insulating fastening device without live contact or live operation of an operator, so that the constructor can realize the hands-free full-insulating operation, and the high efficiency, safety, stability and construction quality consistency of the live lapping hardware fitting of the distribution network line are realized; meanwhile, the occurrence of personal injury events caused by 'mistaken touch' or induction of electric arcs can be effectively avoided in live working.
The invention can be widely applied to the field of design and manufacture of overhead line connecting devices.
Claims (10)
1. The utility model provides an automatic send line to connect insulating fastener for joining in marriage net twine way which 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 end of the two screw rods;
the hook is used for being connected with a live cable in a suspension mode;
a driving-control module wrapped by a rack outer shell and a rack inner shell is arranged on the two screw rods in a penetrating way;
a clamp assembly is arranged on the upper end face 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-shaped structure;
the driving-control module between the bottom stabilizing frame and the screw rod fixer is driven to move up or down along the direction limited by the two screw rods by synchronously driving the two screw rods to rotate forwards and reversely;
arranging a clamping type fixed hardware fitting at a bare wire end of a cable to be connected;
a limiting frame is arranged on the upper end face of the frame shell, and the hardware fitting can be inserted and fixed in the limiting frame in a plugging manner;
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 the screw rod adopt a rotary connection mode to form a group of worm gear-worm kinematic pairs;
a torsion motor is arranged below the limiting frame; the torsion motor and the limiting frame are arranged on the same central axis;
the electrified cable, the cable to be connected, the clamp assembly, the limiting frame, the hardware fitting, the torsion motor and the vertical central axis of the hook are all located in the same vertical plane.
2. The automatic wire feeding, connecting and insulating and fastening device for the distribution network line according to claim 1, characterized in that the hardware comprises a copper insert, an insulating sheet, a lower wire locking block, an upper wire locking block, a torque nut, an upper hook of the hardware, a hardware shaft and a locking torsion spring which are arranged in a shell of the hardware;
the hardware fitting comprises a shell, a copper insert, a screw, a nut and a bolt, wherein the shell of the hardware fitting is internally provided with the copper insert, and the copper insert is internally provided with a metal screw in a penetrating manner; a torque nut is arranged at the lower end of the screw; the upper end of the screw is sequentially provided with a lower wire locking block and an upper wire locking block in a vertically sliding manner, the upper end of the hardware fitting shell is symmetrically provided with a pair of hardware shafts, and each hardware fitting shaft is sleeved with a hardware fitting upper hook and a locking torsion spring; an insulating sheet is arranged between the upper end of the screw and the lower wire locking block.
3. The automatic wire feeding, connecting and insulating fastening device for the distribution network line according to claim 2, characterized in that after the torque motor in the driving-control module is started, the torque motor drives the torque nut to rotate, further drives the screw arranged in the copper insert to rotate, and pushes the lower wire locking block and the upper wire locking block which clamp the bare wire end of the cable to be connected to move upwards, when the pressure or clamping force of the upper hook and the upper wire locking block on the bare wire section 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 'automatic fastening' function of the wire connecting and fastening hardware fitting.
4. The automatic wire feeding, connecting and insulating fastening device for distribution network lines as claimed in claim 2, wherein said torque nut is made of an insulating material to isolate the possibility of electrical connection between the screw and the torque motor.
5. The automatic feeding, connecting and insulating fastening device for distribution network lines as claimed in claim 1, wherein said clamp assembly comprises a clamp holder and a torsion spring, which are sleeved on a clamp shaft, and said clamp holder can be rotated or turned elastically in both directions under the action of the clamp shaft and the torsion spring.
6. The automatic wire feeding, connecting, insulating and fastening device for the distribution network line according to claim 1, characterized in that a hardware fitting assembling signal switch is arranged on the limiting frame; an upper limit detection switch is arranged on the upper end surface of the rack outer shell or the rack inner shell; a lower limit switch is arranged on the lower end face of the rack outer shell or the rack inner shell.
7. The automatic wire feeding, connecting and insulating fastening device for the distribution network line according to claim 1, characterized in that the automatic wire feeding, connecting and insulating fastening device realizes the starting of a direct current motor or a torsion motor in a wireless remote control mode; the forward and reverse operation of the DC motor is stopped by the action of the upper and lower limit switches.
8. The automatic feeding, connecting, insulating and fastening device for distribution network lines as claimed in claim 1, wherein the length of the two lead screws, or the vertical distance between the bottom stabilizing frame and the lead screw fixer, is greater than the safety distance of the live cable corresponding to the voltage class.
9. The automatic feeding, connecting and insulating fastening device for distribution network lines as claimed in claim 1, wherein the worm drives one of the screw rods to rotate, and simultaneously drives the other screw rod to rotate synchronously and in the same direction through the transmission belt.
10. The automatic feeding, connecting, insulating and fastening device for distribution network lines as claimed in claim 1, wherein the automatic feeding, connecting, insulating and fastening device replaces the live connection mode in which the operator has to touch the live connection fitting, by the "automatic feeding" of the cable to be connected, "automatic connection" between the cable to be connected and the live cable, "automatic fastening" of the wire connection fastening fitting, "automatic separation" between the cable to be connected and the clamp assembly, and "automatic disengagement" of the live connection operation device from the wire connection operation site.
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 |
Publications (2)
| Publication Number | Publication Date |
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| CN114336404A true CN114336404A (en) | 2022-04-12 |
| CN114336404B CN114336404B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 | Publication date |
|---|---|
| CN114336404B (en) | 2024-03-22 |
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