38 results about "Strain insulator" patented technology

The invention discloses a fabricated strain insulator string device for an overhead transmission line, and relates to the technical field of electric power fittings, a plurality of disc-shaped insulating covers are hinged between a first U-shaped clamp and a second U-shaped clamp, and the first U-shaped clamp is hinged to the corner of a wedge-shaped strain clamp; a front end wedge-shaped groove and a tail end wedge-shaped groove are formed in the wedge-shaped strain clamp, a plurality of pairs of arc-shaped clamping plates are arranged on the inner bottom wall of the front end wedge-shaped groove, a plurality of U-shaped threaded rods are arranged on the wedge-shaped strain clamp in a sleeving mode, a plurality of fixed connecting plates are fixedly arranged on the wedge-shaped strain clamp, and the U-shaped threaded rods penetrate through the fixed connecting plates and are locked with a pair of self-locking nuts in a threaded mode. And a T-shaped seat is fixedly arranged in the middle of the U-shaped threaded rod, and a pressing mechanism is mounted on the T-shaped seat. The device can be transported in a split mode and is adaptive to complex terrains; the arc-shaped clamping plate and the downward pressing mechanism clamp the power transmission line in a dual mode, adapt to power transmission lines with different diameters and prevent looseness. Components are detachable, installation and maintenance are convenient, cost is reduced, and efficiency and power supply reliability are improved.

The invention relates to the technical field of power transmission line construction, in particular to a continuous uphill and downhill construction sag determination method and system considering the influence of a strain string, and the method comprises the steps: obtaining basic parameters of a continuous uphill and downhill line; the method comprises the following steps: establishing a mechanical model containing a strain string, regarding the strain string as a catenary unit with distributed weight, forming a continuous span combined stress system with a lead, and constructing a mechanical equilibrium equation set of the system; based on the mechanical equilibrium equation set, adopting an iterative algorithm to solve the tension value of the continuous-gear wire gear by gear, taking the initial tension of the first gear as a starting point, and sequentially iterating to determine the final tension; calculating a construction sag value according to the final tension in combination with each span parameter and a tension string deflection angle; and outputting the sag value of each gear and the corresponding wire clamp installation position adjustment parameter. According to the method, the sag calculation precision of the continuous uphill and downhill terrains is improved, and the design and construction accuracy is guaranteed.

The invention relates to the technical field of insulator maintenance, and particularly discloses a 500kV power transmission line tension-resistant single insulator maintenance labor-saving support which comprises a limit switch. The limiting switches are used for adjusting the distance between the fixing elements; the two groups of fixing elements are connected through the connecting element; wherein the fixing element is designed to be of an annular structure and is provided with four supporting legs, the inclined supporting legs are fixed to the side wall of the insulator, and the connecting element and the insulator are kept parallel to each other. The requirement that operators need to manually carry heavy insulators is greatly reduced, the distance between the fixing elements can be automatically adjusted according to the specific size of the insulators, stable installation is achieved by means of the flexible contact face provided by the air bag, and operation can be smoothly conducted even in the narrow or difficult-to-approach position.

The utility model discloses a ten-bundle conductor tension string suitable for ultrahigh altitude, which belongs to the technical field of tension strings and comprises two groups of tension string units. The tension string unit comprises two insulator strings which are arranged in parallel at an interval; one end of the insulator string is connected with an iron tower cross arm through the hanging point side fitting, and the other end of the insulator string is connected with a lead through the lead side fitting; the wire side fitting is provided with a shielding ring assembly. The wire side fitting is also provided with a grading ring which is wound on the tension string unit. According to the ten-bundle conductor strain insulator string suitable for the ultrahigh altitude, the structure can ensure that the electromagnetic environment and the air gap of a power transmission line do not exceed the limit under the condition of the ultrahigh altitude, the ecological environment protection requirement is met, and the engineering construction, the economic development and the ecological environment protection are organically combined.

The invention relates to a power transmission network security management system, and the system comprises a final-stage conversion mechanism which is used for successively executing Wiener filtering processing and median filtering processing on a secondary conversion picture; and the model application device is used for intelligently identifying whether the field spacing distance between the grounding piece and the operation electrician is smaller than or equal to the safe spacing distance or not by adopting an AI identification model. The power transmission network security management system is intelligent in design and simple to operate and control. The image content capturing action can be executed on the replacement scene for replacing the strain insulator string so as to obtain and output the corresponding replacement scene picture, and the AI identification model is adopted to intelligently identify whether the field spacing distance between the grounding piece and the operation electrician is smaller than or equal to the safe spacing distance based on various visual information in the replacement scene picture; therefore, when a strain insulator string is replaced in a power transmission network, a reliable and safe distance between an operation electrician and a grounding body is maintained.

The application discloses a composite cross arm, comprising a first cross arm whose length direction is arranged along a horizontal direction and whose two ends are used for hanging a wire through strain clamps; one end of each second cross arm is connected to the middle of the corresponding first cross arm, the other end of each second cross arm is used for being connected with an electric pole, the second cross arms are obliquely arranged in the length direction, and the second cross arms are arranged below the first cross arms and located in the same vertical plane with the first cross arms; the other ends of the two second cross arms are connected with the two sides of the electric pole through the two connecting fittings respectively; one end of the third cross arm is connected with the middle of the first cross arm, the other end of the third cross arm is used for hanging a jumper wire, and the length direction of the third cross arm is arranged in the vertical direction and located above the first cross arm; one ends of the two strain insulators are connected to the two sides of the middle of the first cross arm respectively, the other ends of the two strain insulators are used for hanging wires through strain clamps, and the length direction of the strain insulators is perpendicular to the length direction of the first cross arm. The utility model further discloses a power transmission pole.

The application discloses a kind of insulator hanging direction judgment method and system in strain insulator string, equipment, it is related to power transmission engineering technical field, it includes according to line parameter data to judge the control operating condition of overhead line;Calculate the hanging point tension of considering string weight under corresponding control operating condition;The hanging point tension of considering string weight is judged, if hanging point tension does not comply with preset requirement, then relax the safety factor of overhead line, until hanging point tension complies with preset requirement, then calculate the inclination angle of midpoint of strain insulator string considering string weight under average temperature operating condition;The hanging direction of insulator is judged according to the inclination angle of midpoint of strain insulator string considering string weight under average temperature operating condition.The application can consider the influence of strain string unit load on sag and tension, calculate the tension of overhead line under non-uniform load, and judge the hanging direction of insulator in strain insulator string, to achieve more accurate calculation, ensure the accuracy and safety of design.

The invention provides an LSZ yoke plate dismounting tool for an overhead transmission line and a dismounting construction technology, the LSZ yoke plate dismounting tool is installed between an LF yoke plate of a strain string and a fitting, the LF yoke plate is provided with a saddle-shaped fixed support, the two sides of the saddle-shaped fixed support are symmetrically provided with a pair of main side edge supporting hanging plates, and the main side edge supporting hanging plates are provided with main side edge supporting hanging plates. A pair of auxiliary side edge supporting hanging plates are installed at the two ends of the two main side edge supporting hanging plates, a pair of connecting supporting plates are symmetrically arranged on each main side edge supporting hanging plate, and tightener assemblies are installed in the middle of each auxiliary side edge supporting hanging plate and on each connecting supporting plate. A side clamping plate assembly is installed between the tightener assemblies on the two sides of the main side supporting hanging plate, and a middle clamping plate assembly is installed between the tightener assemblies on the two sides of the auxiliary side supporting hanging plate. The LSZ yoke plate disassembling and assembling tool can directly disassemble and assemble the LSZ yoke plate under the condition that the whole strain insulator string is not loosened, the overall operation time is shortened, and the construction efficiency is improved.

The invention discloses a strain tower lightning arrester mounting structure adaptive to a coastal multi-thunder and typhoon area. The problems that a traditional lightning arrester cannot meet the protection requirement of a strong thunder area and is insufficient in wind load resistance and overturning resistance during mounting are solved. Wherein the lightning arrester comprises a lightning arrester body and a fixed base, the lightning arrester body is fixed on a strain tower body support through the fixed base, and a set distance is arranged between the lightning arrester body and a strain insulator; the fixed base is provided with a lightning arrester position adjusting structure which is used for adjusting the mounting position of the lightning arrester; the lightning arrester is reinforced by a double-insulator cable-stayed supporting assembly, the double-insulator cable-stayed supporting assembly comprises two cable-stayed insulators, the inclined lower ends of the cable-stayed insulators are connected with the lightning arrester, and the inclined upper ends of the cable-stayed insulators are connected with the tension tower body support.

This invention discloses a testing device for tension insulator strings in high-voltage transmission lines, belonging to the field of power line inspection technology. The device includes a C-shaped semi-enclosed support mechanism, a walking drive mechanism, a defect detection mechanism, and a radial adaptive locking adjustment mechanism. The C-shaped semi-enclosed support mechanism adopts an open frame that can be wrapped around the outside of the insulator string. A radial adaptive locking adjustment mechanism is installed at the opening, and an adaptive flexible fitting component is configured on the inner side to achieve assembly gap compensation and stable fitting. The walking drive mechanism adopts a tracked structure adapted to the insulator contour and is combined with a skirt limiting structure to achieve anti-slip and anti-detachment. The defect detection mechanism integrates visual inspection and electrical parameter detection components, enabling online identification of icing, surface damage, and zero / low-value insulation defects. This invention is easy to assemble, highly adaptable, and provides accurate detection, significantly improving inspection safety and automation levels. It is suitable for online automated inspection of tension insulator strings in high-voltage transmission lines.

The utility model provides an overhead line optical cable suspension strain string. The overhead line optical cable suspension strain string comprises a triangular plate installed on a tower column and strain clamps connected with the left side and the right side of the triangular plate respectively. Optical cables are wound on the opposite sides of the two strain clamps, a parallel groove clamp is connected between the two optical cables, and signal communication between the two optical cables is achieved through the parallel groove clamp; a lifting assembly is arranged on the tower column, the triangular plate is arranged on the lifting assembly, and the lifting assembly can make the triangular plate move up and down; the triangular plate and the triangular yoke plate are connected through the long connecting section or the short connecting section on the adjusting piece, so that the distance between the triangular plate and the triangular yoke plate can be adjusted, the sag of the optical cable can be quickly changed by adjusting the connecting part of the adjusting piece, different operation requirements can be met, the operation flexibility and adaptability are further improved, and the practicability is high. And damage caused by structural deformation or stress concentration can be avoided, the service life of the structure is prolonged, and the structure is prevented from being damaged.

The application specifically discloses a power transformation framework, comprising: support assemblies, at least two of which are arranged at intervals along a first direction, at least one of the support assemblies comprising a first support part and a second support part connected to each other; a crossbeam assembly erected between two adjacent support assemblies, the crossbeam assembly comprising a middle section and edge sections arranged at both ends of the middle section, the edge sections being composite insulating materials, and the middle section being a metal material; wherein the first support part is located between the crossbeam assembly and the second support part, and the first support part is a composite insulating material. The edge sections are composite insulating materials, have excellent electrical insulation performance, and can directly hang wires, thereby reducing the material usage of structures such as suspension insulators and support assemblies to a certain extent, and since the strain insulator string, the suspension insulator string and the jumper wire are saved, the problem of wind deflection discharge possibly existing in the power transformation framework is eliminated.

The invention relates to the technical field of electric power overhaul, in particular to a width-adjustable insulator cradle for replacing a glass insulator. Comprising two insulating rods which are parallel to each other, and further comprises a width adjusting module which is arranged between the two insulating rods, fixedly connected to each insulating rod and used for adjusting the relative distance between the two insulating rods; the limiting module is arranged at one ends of the two insulating rods and is used for limiting the strain insulator string to move along the insulator cradle; and the hoisting module is arranged at one ends, far away from the limiting module, of the two insulating rods and is used for hoisting the equipment to a high place for working after the equipment is adjusted on the ground. Technical transformation is carried out on the basis of an original fixed insulator cradle, an operator on a pole only needs to measure the diameter of a porcelain skirt of an insulator, ground matching personnel are informed, the width of the insulator cradle is adjusted by the ground matching personnel on the ground, and then the insulator cradle can be lifted to a station on the pole to carry out insulator replacement work.

The application discloses a power transmission line strain insulator detection robot and an application method thereof. The robot comprises clamping devices and a mechanical arm device. The clamping device comprises a fixed clamping arm, a movable clamping arm, an automatic telescopic device and a detection device. The fixed clamping arm is in a whole circular arc shape. The detection device is installed at one end of the fixed clamping arm. The movable clamping arm is hinged at the other end of the fixed clamping arm. The fixed clamping arm and the movable clamping arm are provided with rubber-coated rollers. The automatic telescopic device is hinged at both ends of the fixed clamping arm and the movable clamping arm. The rubber-coated rollers are clamped at the peripheries of adjacent insulator magnetic sheets. The mechanical arm device is in an inverted V shape in whole and comprises end joints, arm bodies and intermediate joints. Two sets of clamping devices are connected to two ends of the mechanical arm device. The end joint comprises a driving device capable of driving the clamping device to rotate horizontally and lifting the end of the arm body. The intermediate joint between the two arm bodies is a driving device capable of changing the included angle between the two arm bodies. The driving devices are all AK series power modules.

The application provides a general fixture for live replacement of a tension insulator string of a double-broken busbar of a substation framework, and belongs to the technical field of live maintenance of power transmission and transformation equipment. The general fixture comprises a front clamp, a rear clamp, a thickened pull plate, a lead screw and a bottle pulling assembly. The front clamp is used for detachable connection with an LV connecting plate on the side of the tension insulator string of the double-broken busbar of the substation framework. The rear clamp is used for detachable connection with a U-shaped pull ring at the end of the insulator string. The thickened pull plate is provided with two groups. One end of each group is connected with the front clamp through a pull plate connecting seat, and the other end is connected with the rear clamp through the lead screw. The lead screw is used for adjusting the distance between the front clamp and the rear clamp, so as to relax or tension the insulator string. The bottle pulling assembly is selectively connected with the front clamp or the rear clamp, and is used for supporting the insulator to be replaced. The general fixture for live replacement of the tension insulator string of the double-broken busbar of the substation framework can solve the problems of poor universality, insufficient adjustment capacity and low operation efficiency of the prior art.

The invention relates to a strain insulator string for a 1000kV extra-high voltage transformer substation suitable for a high altitude, and belongs to the technical field of insulator strings. Comprising an insulator assembly. The high-voltage side connecting fitting assembly is arranged at the lower end of the insulator assembly and is used for connecting a high-voltage wire; the grading ring is arranged at the joint of the lower end of the insulator assembly and the high-voltage side connecting fitting assembly, the grading ring is of a double-ring structure formed by coaxially arranging a large ring and a small ring, and the grading ring is located below the insulator assembly; and the shielding ring assembly is arranged below the grading ring and is connected to the high-voltage side connection fitting assembly, and the shielding ring assembly comprises two shielding rings which are symmetrically arranged on the two sides of the high-voltage side connection fitting assembly. The air gap discharge performance and the creeping discharge performance near the connection point are improved, the influence that the corona inception voltage is reduced due to elevation rise is counteracted, and therefore corona and noise are avoided.

This invention discloses a vibration and collision prevention device for tension insulator strings based on multi-degree-of-freedom adjustment. The device is installed between adjacent insulator strings and includes two sets of fixed bases, two sets of hinge assemblies, a buffer assembly, and two sets of limiting assemblies. The fixed bases are symmetrically fixed to the outer walls of adjacent tension insulator strings. The hinge assemblies are fixed to the opposing sides of the two fixed bases and consist of a series-arranged universal ball joint and a rotary hinge joint. The axial ends of the buffer assembly are respectively hinged to the two sets of hinge assemblies. The buffer assembly includes a stroke adjustment unit and a damping unit. The limiting assemblies are located at the axial ends of the buffer assembly, and their limiting stroke matches the extension stroke of the stroke adjustment unit. This device constructs a multi-degree-of-freedom hinge system through the hinge assemblies, preventing additional bending moments from occurring in the insulator strings under vibration conditions. Simultaneously, the buffer assemblies integrate spacing adjustment and damping vibration reduction functions, compressing the device volume, shortening the vibration transmission path, and effectively blocking vibration transmission.

The utility model belongs to high -voltage transmission line detection technical field, and disclose a kind of rotor type strain insulator deterioration detection device, including arched frame and the control system of installation in arched frame surface, travelling mechanism, detection mechanism and guiding mechanism, two groups of rotors of opposite rotation are rotatably installed in the four corners of arched frame, and binocular camera is installed in the middle of the four around arched frame;The detection mechanism includes steering gear installed in the bottom center of arched frame and adjusting frame connected with the output end of steering gear, and the front and rear ends of adjusting frame are connected with sleeve pipe.The above-mentioned scheme solves the problem that the existing device needs to be landed on insulator string during operation, but the surface of insulator string can be approximately regarded as a cylindrical surface, which is not suitable for the landing of the device, and the device has the risk of falling.

The utility model relates to the technical field of power construction, in particular to a lead backup protection device for live replacement of a 66kV power transmission line strain single-string insulator. The rear end of the wire clamp is movably connected with a joint rod with electrical insulation performance, the joint rod is movably connected with a pull rod with electrical insulation performance, the pull rod is movably connected with a tightener, the tightener is movably connected with an angle steel unilateral tightener, and the angle steel unilateral tightener is connected with angle steel on an iron tower cross arm. The angle steel single-side tightener is arranged, the requirement for tensile force generated by the cross arm single-side angle steel and a wire which are conducted through a pull rod and the tightener can be well met, and the produced angle steel single-side tightener has the advantages of being light in weight, high in strength, flexible to operate, easy to operate, long in service life and not prone to damage.

The invention provides a GIM model-based soft and hard collision batch verification method and system for a hanging point of a strain insulator string of a power transmission line and a storage medium, and relates to the technical field of hanging collision verification of the strain insulator string. The soft and hard collision batch verification method and system for the hanging point of the strain insulator string of the power transmission line in the GIM model can automatically and precisely carry out soft and hard batch collision inspection on the hanging point of the strain insulator string in the GIM model. Comprising the following steps: identifying all to-be-detected strain insulator string tower hanging points and corresponding hardware fitting components from a model; constructing a refined model library; completing preliminary import and placement of the refined model; precise alignment of the hardware fitting assembly and the refined tower hanging point model in spatial positions and postures is realized; driving the refined model to evolve from a static installation state to a dynamic space state under a specific operation condition; and in the dynamic space state, hard collision checking is performed on each checking unit. According to the invention, designers are liberated from tedious and repeated work, and the verification efficiency is improved in order of magnitude.

The application discloses a kind of installation structures of strain tower lightning arrester suitable for coastal multi-thunder typhoon area, solve the problem that traditional lightning arrester installation cannot meet the protection demand of strong thunder area and the problem of insufficient wind load resistance and overturning resistance capability.Therein, the lightning arrester includes a lightning arrester body and a fixed base, the lightning arrester body is fixed on the tower body support of strain tower through the fixed base, and is spaced apart from the strain insulator at a set distance;The fixed base is provided with a lightning arrester position adjusting structure for adjusting the installation position of the lightning arrester;The lightning arrester is reinforced by a double-insulator cable-stayed support assembly, the double-insulator cable-stayed support assembly includes two cable-stayed insulators, the oblique downward end of the cable-stayed insulator is connected with the lightning arrester, and the oblique upward end is connected with the tower body support of strain tower.

The utility model relates to bird thorn plate technical field, and disclose the bird thorn plate of strain insulator string, including two mounting plates, the inside hinged of two mounting plates is equipped with the scissor type expansion joint, the hinged point of scissor type expansion joint upper end all fixedly installed has the thorn needle, the both sides bottom of scissor type expansion joint all is equipped with the contraction guarantee structure, through setting contraction guarantee structure, when the scissor type expansion joint stretches or contracts, the guide rod of its both sides bottom will slide along the arc groove of fan -shaped board surface, and the guide gear moves along with the connecting plate, when the fan -shaped rack plate and guide gear align, the both sides are engaged, with the meshing drive of gear and rack, the movement track of scissor type expansion joint is accurately guided, through track constraint offsets external force influence, effectively reduces the deformation and deviation of scissor plate under the action of external force.

The invention discloses a six-joint three-hanging tension porcelain insulator zero value detection device, and belongs to the technical field of extra-high voltage power transmission. A suspension rack, a wireless communication module, a camera module, a probe group and an identification module are arranged on a fixed frame, and unmanned aerial vehicle hoisting is realized through the suspension rack, so that manual high-altitude climbing operation is not needed, and the detection efficiency is improved. The insulator zero-value detection can be carried out by moving the detection module, the high-altitude operation risk is avoided, the labor intensity of personnel is greatly reduced, the zero-value detection work can be carried out when the line is powered off and electrified, and the unmanned aerial vehicle is adopted for hoisting detection, so that the speed and efficiency of reaching the detection position can be greatly improved, and the preparation time is shortened; the device can quickly move on a strain insulator string, realizes intelligent position determination and automatic detection through the probe group, the camera and the identification module, performs data transmission through the wireless communication module, performs master control through the control module, and improves the detection efficiency and reliability.

This utility model discloses a potential tool for tension insulator strings, comprising an insulating crossbar. One end of the insulating crossbar is rotatably connected to an insulating side bar A, and the other end of the insulating crossbar is rotatably connected to an insulating side bar B. Its structure is reasonable. This utility model connects the crossbar side clamp to the insulating crossbar via a rotatable connection from the insulating side bar A, and fixes it at an angle with bolts. The crossbar side clamp is then inserted into the corresponding position on the tower. Using adjustable-length clamps and nuts, it is tightened for fixation. The adjustable-length clamps are applicable to different types of towers, minimizing the possibility of incompatibility and installation failure due to incompatibility with different tower types. This effectively improves the applicability of the potential tool for tension insulator strings.

The invention relates to the technical field of power transmission line live-line maintenance, and discloses a wire side tool for live-line replacement of a strain insulator string, which comprises a support frame, a yoke plate and a lever, connecting assemblies are symmetrically mounted on the left and right sides of the front end of the support frame, the support frame and the yoke plate are fixedly connected through the connecting assemblies, and a hoisting assembly is mounted at the top of the concave surface of the support frame. The lever is installed above the supporting frame through the hoisting assembly. Fixing holes are formed in four corners of the upper end of the yoke plate, a pair of through holes are formed in the front side and the rear side of the upper end of the yoke plate, positioning grooves are formed in the front end face and the rear end face of the yoke plate in a bilateral symmetry mode, and the through holes are located between the positioning grooves in the rear side; the supporting frame is triangular, the lower portion of the front end of the supporting frame is fixedly connected with a positioning block, and the positioning block is inserted into the positioning groove. According to the invention, the triangular support frame is rigidly connected with the yoke plate to form a cantilever type'head-up 'fulcrum, a grinding rope can be directly placed on the lever to obtain a stable elevation angle, a sleeper is not needed for heightening, and friction and collision between the rope and a cross arm are thoroughly eliminated.

This invention discloses a self-balancing tension insulator string inspection robot and its application method, including a chassis, a center of gravity adjustment device, a support platform device, an insulator inspection device, and a clamping device. The center of gravity adjustment device is connected to the upper side of the chassis, and two support platform devices are symmetrically connected to the front and rear sides of the chassis. Multiple sets of insulator inspection devices are connected to the bottom surface of the chassis and / or the support platform devices. The clamping devices are connected to the clamping devices respectively. The support platform devices can extend and retract and can rotate horizontally with the chassis. The clamping devices can simultaneously clamp the front and rear end faces and side walls of cylindrical insulators and can be opened to a horizontal state. Suspended below the tension insulator string by the clamping devices, it can inspect insulators with different skirt spacings and string spacings, and operates stably. During inspection, the insulation resistance value of multiple insulators can be inspected at one time, and the robot can quickly move to the next inspection unit. After one string is inspected, the robot can quickly transfer to another string.

The invention relates to an anti-treading device for a composite strain insulator during construction, and relates to the field of auxiliary tools for power construction, the anti-treading device comprises a transverse frame and two connecting devices, and the two ends of the transverse frame in the first direction are each correspondingly provided with one connecting device; the connecting device comprises a plurality of connecting assemblies and a plurality of locking assemblies; the connecting assemblies are distributed at intervals in the second direction, each connecting assembly comprises a bayonet socket and two vertical rods, in the first direction, one end of each bayonet socket is an open end, the other end of each bayonet socket is a sealed end, a clamping groove is formed in the open end of each bayonet socket, and each clamping groove penetrates through the corresponding bayonet socket in the second direction; a distance is formed between the clamping groove and the transverse frame in the third direction; the vertical rod is fixedly connected between the bayonet socket and the transverse frame; each bayonet socket is correspondingly provided with a locking assembly, and the locking assemblies are connected to the opening ends of the bayonet sockets so as to be used for sealing the clamping grooves at the opening ends of the bayonet sockets. The method has the effect of reducing the damage of the tension composite insulator in the wire outgoing operation process.

The utility model relates to a short -circuit tool for tension insulator, especially disclose a short -circuit tool for fast connection of short -circuit tension insulator for construction, the conductive assembly is set up between two the shell, the inside sliding of shell is equipped with the clamping arm for clamping fitting, the inside sliding of shell is equipped with the double -sided bevel gear plate, the transmission rod for transmitting power is installed between the clamping arm and double -sided bevel gear plate, the inside symmetrical sliding of shell is equipped with the catch plate for catching double -sided bevel gear plate, the both ends symmetrical fixed mounting of shell has the bushing, the side end of catch plate installs the first gear for the reset catch plate, the unlocking frame is slidably installed on the shell, the second spring for resetting the unlocking frame is installed on the unlocking frame, the side end of double -sided bevel gear plate installs the third spring for the reset double -sided bevel gear plate, through the short -circuit operation of pushing, reached the effect that improves short -circuit speed and increases operation safety.

The utility model provides a non-power-cut sampling zero-hanging insulator string installation structure. An insulator string adopts a zero-hanging insulator string which is not connected with a live conductor and is the same as an electric power engineering insulator string in type. The insulator string is installed at a position of easy sampling observation height below an electric power engineering insulator string through the insulator string installation structure. The installation structure can be arranged by combining with existing facilities such as an outgoing line framework, an equipment bracket, a wall surface and a lamp post, and can also be installed by arranging a special framework, so that the sampling is convenient, the structure is simple, the installation is convenient, and economy and practicability are realized; multiple groups of zero-hanging insulator strings of corresponding types can be installed according to the types of insulator strings of electric power engineering, and the sampling requirements of hanging suspension insulator strings and strain insulator strings of live conductors in all scenes of an electric power system can be met. The mounting structure can be widely applied to projects such as transformer substations, switching stations, converter stations and outgoing line fields, and has good popularization and application values.

The utility model discloses a duplex 550kN tension string suitable for 500kV large-span spanning, comprising insulators which are symmetrically arranged front and back, the left sides of the insulators are connected with ball head hanging rings, the left sides of the ball head hanging rings are connected with a first fitting group, the right sides of the insulators are connected with a socket hanging plate, the right side of the socket hanging plate is provided with a right-angle hanging plate, and the right-angle hanging plate is provided with a second fitting group. The socket hanging plates and the right-angle hanging plates on the front side and the rear side are connected to the four corners of the same yoke plate I, the right sides of the right-angle hanging plates are connected with the yoke plate II, and the right side of the connecting yoke plate II is connected with the fitting group II.