796results about "Adjusting/maintaining mechanical tension" patented technology

Provided is a gear ratchet tensioner for indirect live wire and an indirect live wire non-power distribution method and, more specifically, to an automatic direction switching pendulum-type rotary drive gear ratchet tensioner for indirect live wire and an indirect live wire non-power distribution method using the same, wherein the automatic forward or reverse rotation of a roller shaft can be carried out by simply operating a rotary lever using a stick for indirect live wire, and accordingly, indirect live wire work from the wire in the live wire condition enables safe wiring work such as wire electric dip adjustment work, electric wire installation work, and suspension insulator replacement work, etc. and the roller shaft is formed to be driven by a backstop ratchet ring operated by a multi-angle bundle pearl to strongly prevent a reverse direction and prevent backlash during a reverse rotation driving process to enable strong rotation driving.

The invention relates to the field of transmission towers, and discloses a tension type transmission tower buffer connecting device which comprises a supporting frame, a plurality of isolation assemblies are symmetrically arranged on the upper surface of the supporting frame, sliding seats are slidably connected into the isolation assemblies, and connecting rods are fixedly connected to the outer surfaces of the sliding seats. A belleville spring set is arranged between the outer surface of the sliding base and the inner wall of the isolation assembly, the belleville spring set is arranged on the outer surface of the connecting rod in a sleeving mode, and a telescopic rod and a first spring are fixedly connected between the outer surface of the sliding base and the inner wall of the isolation assembly. A primary buffer layer is formed by the belleville spring set and the first spring, axial impact force can be absorbed without sliding of the sliding seat during daily wind vibration and wire slight galloping, meanwhile, vibration can be restrained through the huge static friction torque of the fan-shaped friction face and the friction ball in the omnidirectional damping assembly, the circuit is kept stable, and slight load impact is effectively dealt with.

The utility model provides a portable wedge strain clamp, which belongs to the technical field of strain clamps and comprises a clamp body and a wedge, a wedge groove is arranged in the center of the upper surface of the clamp body, track grooves are arranged above the left and right side surfaces of the wedge groove, latch grooves are arranged below the track grooves, and the wedge groove is arranged below the latch grooves. Track rods are arranged above the surfaces of the left side and the right side of the wedge, a mounting groove is formed above the surface of the outer side of the wedge, and a positioning assembly is mounted in the mounting groove; the wedge-shaped groove in the wire clamp body is matched with the wedge to clamp the wire, the contact area between the wire and the wire clamp body is increased, the friction force between the wire and the wire clamp body is increased, the clamping stability is improved, the wedge is taken out of the wire clamp body, and the wire clamp body can conveniently install the wire in a closed mode and an open mode. The end portion of the wire and the center of the guide can be clamped conveniently, convenience in assembly is improved, and the wedge can block the opening in the wire clamp body to prevent the guide from falling off from the wire clamp body.

The invention relates to the technical field of ray detection, and discloses a strain clamp X-ray detection device for a power transmission line, which comprises a walking assembly, an imaging assembly, an aircraft and a control assembly, the aircraft can carry the strain clamp X-ray detection device on a split conductor; the walking mechanism is controlled by the control assembly to start to drive the rack to arrive at the position of the strain clamp to be detected, the imaging plate and the X-ray machine are further synchronously adjusted through the adjusting mechanism, so that the strain clamp can be located in a detection position formed between the imaging plate and the X-ray machine, the X-ray machine is controlled to emit X-rays to irradiate the strain clamp, and the strain clamp is detected. Receiving the X-ray by the imaging plate, and forming a strain clamp X-ray film; through continuous adjustment of the adjusting mechanism, the imaging mechanism completes X-ray detection on each strain clamp on the split conductor. In the detection process, the aircraft only needs to fly once, so that the detection operation process is simplified, the time required by the detection work is saved, and the detection work efficiency is improved.

The present application discloses a transmission tower, comprising a tower body and composite crossarms arranged on the tower body. Each composite crossarm comprises at least one insulator and an end fitting. The end fitting is connected to the high-voltage end of the insulator to form an end portion of the composite crossarm for hanging first transmission lines. The end fitting comprises a connection part. The connection part is provided with two line hanging plates and a jumper connection piece. The two line hanging plates are distributed on two sides of the connection part in the extension direction of the first transmission lines. A first jumper is electrically connected to the first transmission lines located on two sides of the tower body and is hung on the jumper connection piece. In the present application, the composite crossarms are applied to a tension tower; connection joints are simple in structure, novel and attractive; power transmission paths are clear; transportation and subsequent operation and maintenance are facilitated; the overall stability of the transmission tower is improved; and the safety of transmission lines is improved.

The invention discloses a jumper string capable of preventing a lead tension string from inclining, relates to the technical field of jumper strings, and aims to solve the problems that due to the blowing of wind power, leads swing and tend to drive the tension string to incline, and after the tension string inclines, the distance between the leads on two sides is increased, so that a jumper is separated from the leads, and the circulation of a conductive path is influenced. Through cooperation of an outer groove ring and an inner convex ring, before fixation, a clamping block can rotate between a clamping frame and a sliding plate and can be adjusted according to the angles of wires on the two sides of a tower, after fixation, the outer groove ring and the inner convex ring are tightly attached, an annular protrusion of the inner convex ring is clamped into an annular groove of the outer groove ring, and the contact area between the outer groove ring and the inner convex ring is increased; when a wire swings to drive a tension string of a tower to incline, a pulling force is transmitted to the clamping block through the tension wire clamp, so that the clamping block is limited by the outer groove ring and the inner convex ring, and the situation that the jumper wire and the wire are disconnected due to inclination of the tension string after the jumper wire is connected, a conductive path is disconnected, and power transmission is affected is prevented.

The invention provides an assembly type strain clamp protection device, and relates to the field of power transmission lines, the assembly type strain clamp protection device comprises a triangular pulling plate, connecting holes are formed in the triangular edges of the triangular pulling plate, insulation assemblies are clamped to the inner side walls of two connecting holes, a fixing zipper is clamped to the inner wall of the other connecting hole, and the triangular pulling plate is integrally in an isosceles triangle shape. The device further comprises a hanging plate, a strain clamp, an adjusting mechanism and a power transmission line buffering and carding component. Through the arrangement of the triangular pulling plate, the insulating assembly, the hanging plate, the strain clamp, the adjusting mechanism and the power transmission line buffering and carding component, the remaining power transmission lines can be sequentially arranged in the power transmission line buffering and carding component, and the power transmission lines are fixed at the two ends through the power transmission line fixing clamps; and the middle power transmission line can be telescopically abdicated between the two extension assembly parts, so that the rate of rapid wear of the power transmission line caused by large-area swing of the whole power transmission line is reduced, and the power transmission line can be conveniently cut and used by later-stage personnel by adopting the mode of reserving the power transmission line.

The invention relates to the technical field of wire tighteners, in particular to an intelligent wire tightener and a wire tightening method thereof.The intelligent wire tightener comprises a main body, and a middle part is arranged in a wire tightening area between a first shell and a second shell of the main body; the upper end and the lower end of the middle part respectively press a wire rod middle part and a wire rod terminal part against the first shell and the second shell so as to fix the wire rod middle part and the wire rod terminal part; the middle part is connected with the U-shaped rib of the main body in a sliding mode and comprises a middle block, clamping blocks arranged at the upper end and the lower end of the middle block respectively and an inclined plate arranged in the middle block and located between the two clamping blocks. According to the wire tightener, even if the second shell is loosened due to the fact that the main body is aged and the like, it can be ensured that the wire middle part and the wire terminal part are kept in the state of being tightened and fixed by the main body, the situation that the wire middle part and the wire terminal part slip off from the main body cannot occur, and safety is guaranteed.

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 lines of power systems, in particular to an adjustable anti-twist tension yoke plate. Through the unique design of the adjusting rod group, the extension and retraction amounts of the two tension-resistant hanging heads in the right-angle direction of the right-angle connecting rod can be synchronously adjusted, so that the relative angle between the two tension-resistant hanging heads can be continuously and accurately changed. Therefore, the yoke plate can flexibly adapt to complex actual working conditions such as different line steering angles and elevation differences, the universality of the yoke plate is greatly improved, and the application range of the yoke plate is greatly widened. Elastic constraint is applied to rotation of the triangular yoke plate through a constraint piece such as a hook spring or a spring abutting rod which is arranged between the tension-resistant hanging head and the triangular yoke plate. According to the design, the line can be allowed to slightly deflect in a reasonable range to release stress, excessive torsion or continuous single-side torsion caused by wind power and the like can be effectively inhibited, the problems such as wire torsional pendulum and uneven yoke plate stress caused by excessive torsion or continuous single-side torsion are fundamentally avoided, and the service life of the line hardware fitting and the wire is prolonged.

The invention relates to the technical field of strain clamps, in particular to a compression type strain clamp which comprises a body and a connector, the connector comprises a steel pipe, a first upper clamping device and a first lower clamping device, the first upper clamping device is clamped on an aluminum pipe, and according to the compression type strain clamp, when the strain clamp is not broken, the overall rigidity of the clamp body is improved, a jumper wire is supported, and the service life of the jumper wire is prolonged. And after fracture, the fracture point is prevented from deviating to a farther position under the action of the connector and the jumper strainer, and the lead does not apply a downward pulling force to the jumper after fracture. Under the action of the locker, when the jumper wire is broken, the locker locks the position of the hinge rod I, namely, the connecting rod II cannot move, so that the limiting tensioner cannot move, that is, the steel pipe is locked, the bottom of the jumper wire is prevented from shaking, and the service life of the jumper wire is prolonged. Therefore, wrinkles or fractures between the jumper wire and the drainage tube are avoided.

The present invention relates to a wedge-shaped tensile clamp having a function of preventing the release of a wire escape prevention-type safety structure capable of enabling indirect live-line work and a wire fixing method using same and, more specifically, to the technical field regarding a wedge-shaped tensile clamp having a function of preventing the release of a wire escape prevention-type safety structure capable of enabling indirect live-line work and a wire fixing method using same, in which a pair of wedges can be advanced or retreated with a live-line work stick, a double fixing elastic pin can be moved vertically with the live-line work stick so that the pair of wedges can be retreated and then fixed or released, and the pair of wedges can be advanced and then fixed or released so that the fixing or separation of a wire can be carried out along with the indirect live-line work, and after the pair of wedges can be advanced, the wedges can be fixed so as to prevent loosening, thereby preventing the detachment of the wire.

The process and apparatus for tension stringing a conductor through above-ground supports uses a length of rope affixed to the conductor wound on the tensioning machine and pulled by the puller machine. Each of the first and second stringing apparatuses includes an onboard control system which controls each of the first and second stringing apparatuses in pulling mode or in tensioning mode. Each of the first and second stringing apparatuses includes a motor / regenerative brake or other means of inducing tension into the conductor. Each of the machines includes a wireless transceiver which is hard-wired to said onboard control systems. A first operator resides on the puller machine and selects the machine as a puller machine operating in pulling mode using an onboard control system. An observer resides on the tensioner and selects the second machine to be the tensioner. Each of the wireless transceivers communicates with the other wireless transceiver enabling control of both the machines by the onboard control system of the puller machine.

The invention relates to the technical field of cables, and discloses an electric power fitting connector for an elastic cable, which comprises a bent rod, two groups of fixing blocks are arranged on the outer wall of the bent rod, the inner walls of the two groups of fixing blocks are in sliding connection with the outer wall of the bent rod, sleeves are fixedly connected to the sides, close to each other, of the two groups of fixing blocks, and the electric power fitting connector further comprises a fixing mechanism, the fixing mechanism comprises two moving plates, the sides, close to the bent rod, of the two moving plates are slidably connected with the outer wall of the bent rod, the sides, away from the bent rod, of the two moving plates are each provided with two first connecting rods, and the sides, close to the moving plates, of the four first connecting rods are slidably connected with the moving plates. By arranging the fixing mechanism, the insertion mechanism can be limited, after the insertion mechanism completes distance movement, the fixing mechanism can prevent the insertion mechanism from moving again, and therefore it is ensured that after the electric power fitting connector is installed, the installation stability of the electric power fitting connector is maintained.

The invention relates to the technical field of cable installation, in particular to a tension adjusting device for an overhead line, which comprises a bracket, a winding wheel, a pull rope, a first clamping wheel, a second clamping wheel and a pre-tightening assembly, and is characterized in that the winding wheel is rotationally arranged on the bracket; the first clamping wheel and the second clamping wheel are rotationally arranged on the support and located on the two sides of the wire in the radial direction. The first clamping wheel and the second clamping wheel clamp the wire and convey the wire through rotation. The first clamping wheel and the winding wheel rotate synchronously through a pull rope. The pre-tightening assembly is used for controlling the first clamping wheel and the second clamping wheel to get close to each other and get away from the winding wheel in the radial direction of the wire. A pre-tightening assembly is arranged, a first clamping wheel and a second clamping wheel can clamp a wire, rotation of a winding wheel can enable the first clamping wheel to rotate relative to the wire and drive the wire to move, the wire is gradually tensioned when moving along with rotation of the first clamping wheel, and the clamping positions of the first clamping wheel and the second clamping wheel on the wire are changed; and the damage degree in the wire tensioning process is reduced.

The invention relates to the technical field of wire installation, and particularly provides a strain clamp of a power transmission line, which comprises a shell and two wedge blocks. A wedge-shaped through groove is formed in the shell in the length direction of the shell. A baffle is arranged on the side edge of a groove opening of the through groove, a force storage barrel is arranged on the baffle, and the force storage barrel is connected with a tensioning rope. The two wedge blocks are oppositely arranged in the through groove, and a power transmission line is clamped between the two wedge blocks; a rotating shaft is arranged on the wedge block opposite to the baffle and is connected with the opposite tensioning rope; and the rotating shaft is in frictional contact with the power transmission line and rotates when the power transmission line slides relative to the wedge block, so that the tensioning rope is wound around the rotating shaft. According to the scheme, by arranging the force storage cylinder, the rotating shaft and the tensioning rope, when the power transmission line slides relative to the wedge block, the rotating shaft is driven to rotate through the friction effect, so that the tensioning rope is wound around the rotating shaft, the friction resistance among the shell, the wedge block and the power transmission line is improved, the clamping effect on the power transmission line is improved, and the falling risk of the power transmission line is reduced.

The invention discloses a quick-insertion type strain clamp which comprises an insulating shield, a clamp pressing plate, a wedge block sliding groove, a wedge-shaped sliding block, a compression spring, a pressing type plug pin assembly, an insulator connecting block, an end insulator, a wire plug, a jumper plug, a nylon nut, a T-shaped copper wire clamp and a spring contact finger. The wedge block sliding groove, the pressing type plug pin assembly, the T-shaped copper wire clamp and the insulator connecting block are sequentially installed on the wire clamp pressing plate and are combined into a whole through the wire clamp pressing plate, and the insulating protective cover wraps the outer side of the whole structure. The strain clamp designed by the invention forms a whole body, a wire is pressed during construction, and the installation can be completed by inserting a plug according to requirements. An integral insulation form is adopted, the insulation performance is better, the U-shaped structure is adopted at the end part, and the cable can be suitable for tower types of various angles, and the universality is good.

Provided in the present application is a power transmission tower, comprising a tower body and a composite cross arm arranged on the tower body. The composite cross arm comprises a post insulator, a diagonal tension insulator and a node fitting, wherein first ends of the post insulator and the diagonal tension insulator are both connected to the tower body, and second ends thereof are connected together by means of the node fitting. The node fitting comprises: a first connecting fitting and a second connecting fitting; and two wire hanging fittings, both of which are connected to the second connecting fitting, the first connecting fitting being connected to the second connecting fitting by means of one of the wire hanging fittings, wherein both the two wire hanging fittings are used for hanging a conductive wire. The post insulator is connected to the first connecting fitting, and the diagonal tension insulator is connected to the first connecting fitting or the second connecting fitting. The described design enables the bearing capacity of the node fitting to be improved, reducing the manufacturing cost of the power transmission tower.

The utility model provides a strain clamp, and relates to the field of power transmission and transformation line fittings. The strain clamp comprises a steel anchor, a strain pipe, a drainage plate, a drainage clamp and a fastening assembly, the steel anchor is connected with the strain pipe; the strain pipe is welded with one end of the drainage plate; the drainage wire clamp is connected with the other end of the drainage plate, and the drainage wire clamp and the drainage plate are fastened through the fastening assembly; wherein the drainage plate is provided with first ripples, and the drainage wire clamp is provided with second ripples; after the drainage plate and the drainage wire clamp are connected, the first corrugation and the second corrugation are matched. The strain clamp provided by the utility model is high in heat resistance and convenient to install and maintain.

The invention discloses a power transmission tower with a protection function, and relates to the technical field of power transmission towers, the power transmission tower comprises a power transmission tower main body of a rectangular frame structure, and the inner wall of the top end of the power transmission tower main body is connected with a wire used for transmitting a main carrier of electric energy in an inserted mode; the outer wall of the bottom end of one side of the power transmission tower body is in threaded connection with an insulator used for connecting the insulated wire and the power transmission tower body and conducting current to the power transmission tower body, a balance reset mechanism is arranged on the outer wall of one side of the insulator, and a current guiding mechanism is arranged at the center of the lower portion of the wire. A sag suppression mechanism is arranged on the outer wall of the lower portion of the wire, a long tooth plate block and a short tooth plate block are matched with each other, a balance reset mechanism can automatically adjust the tension difference between the wires, and therefore the stability of the wires is maintained, and the balance reset mechanism can reduce wire shaking; therefore, the occurrence of short-circuit accident risks caused by contact of the wires under strong wind or other extreme conditions due to non-uniform tension among the wires is reduced.

The invention relates to the technical field of power transmission, in particular to a power transmission rack which comprises a base, a rotating seat vertically and rotatably connected with the base and a wire holder horizontally and slidably connected with the rotating seat, a reset rotating disc is arranged at the joint of the rotating seat and the base, and the wire holder is provided with a plurality of wire fixing clamps used for being connected with power transmission cables. The rotating seat is provided with an electric servo air cylinder used for pushing a wire fixing clamp on the wire holder to tension a power transmission cable, the electric servo air cylinder is provided with a barometer used for measuring air pressure in the electric servo air cylinder, and the base is provided with a controller in communication connection with the electric servo air cylinder and the barometer. By implementing the power transmission rack, the influence of temperature, wind power and wind direction and the load of the power transmission cable can be eliminated, so that the stability and the service life of the power transmission cable are ensured.

The utility model relates to a bolt type strain clamp for an overhead line, which comprises a supporting groove, the supporting groove is divided into a horizontal supporting groove and an inclined supporting groove, the tail end of the horizontal supporting groove is fixedly connected with the top end of the inclined supporting groove, the tail end of the horizontal supporting groove is provided with a rotatable pressing block, one end of the pressing block is provided with a tensioning hole, the inclined supporting groove is fixedly connected with a major arc-shaped sliding groove, and the inclined supporting groove is fixedly connected with a bolt. An arc-shaped pressing block is slidably connected into the sliding groove, screw holes are formed in the two ends of the sliding groove, fastening screws are connected into the screw holes in a threaded mode and abut against the arc-shaped pressing block, and a limiting plate is arranged on one side in the sliding groove and located below the screw holes. According to the bolt type strain clamp for the overhead line, the arc-shaped pressing block which can slide telescopically and the set screw are matched to compress a wire, the arc-shaped pressing block can retract into the sliding groove when the bolt type strain clamp is not used, field assembly is not needed, installation is easy, and accessories are not prone to being lost.

The present invention relates to a wire grip for indirect live wire and a method for wiring indirect live wire and, more specifically, to an automatic direction switching pendulum-type rotary drive ratchet wire grip for indirect live wire and a method for wiring indirect live wire using same, wherein automatic forward or reverse rotation of the drum shaft can be operated by simply operating a rotary lever using a stick for indirect live wire without separate rotational direction switching operation, accordingly, indirect live wire work from a distance from the wire in the live wire condition enables stable wiring work such as wire reversal adjustment work, long wire installation work, and suspension insulator replacement work, and a drum shaft is driven by a backstop ratchet ring operated by a multi-angle bundle pearl to prevent a backlash phenomenon during a strong anti-reverse driving process and a contrary reverse rotation driving process.

The high-stability low-voltage wire tightener comprises an upper pressing plate, a middle pressing plate, a lower pressing plate and a shell, two screws are arranged at the bottom of the upper pressing plate, two middle holes and two lower holes are formed in the middle pressing plate and the lower pressing plate respectively, the screws sequentially penetrate through the middle holes and the lower holes, and locking nuts are connected to the screws; the pre-tightening mechanisms are arranged on the two sides of the lower pressing plate and matched with the two screw rods correspondingly, each pre-tightening mechanism comprises a pre-tightening knob, a follow-up block and a pre-tightening shaft sleeve, the pre-tightening shaft sleeves are installed on the peripheries of the screw rods, a plurality of conical teeth are vertically arranged on the side portions of the pre-tightening shaft sleeves, the two sides of the lower pressing plate are each provided with a circular truncated cone part, and movable cavities are formed in the outer ends of the circular truncated cone parts; a guide hole is formed in the inner end of the movable cavity, the pre-tightening knob is connected to the outer end of the circular truncated cone part, the follow-up block is arranged in the movable cavity, the pre-tightening knob is rotated to drive the follow-up block to axially slide, and a locking convex part is arranged on the follow-up block. When the nut is not screwed tightly or unscrewed, the cable cannot slide and fall off, high-altitude operation of a worker is facilitated, and the safety is higher.

A system may include a cable tensioning system, comprising: a first support structure having a first securement point; a second support structure spaced from the first end pile and having a second securement point; a third support structure positioned between the first support structure and the second support structure, the third support structure having a cable support; and a cable extending between the first support structure and the second support structure having a tension value, wherein the tension value corresponds to at least one environmental factor related to where the system is geographically located, and a maximum possible vertical distance from the cable at the first securement point to a low point along a length of cable between the first securement point and the second securement point.

The invention discloses a parallel bunched cable strain clamp convenient to install, and aims to overcome the defect that in the prior art, a parallel bunched cable strain clamp is inconvenient to use. The technical problem is solved through the following technical scheme that the device comprises a first clamping plate and a second clamping plate which are arranged in parallel, and the two sides of the first clamping plate and the two sides of the second clamping plate are connected through parallel connecting assemblies; clamping block assemblies are arranged on the opposite surfaces of the first clamping plate and the second clamping plate and are arranged in the first clamping plate and the second clamping plate in a sliding manner; a connecting assembly is arranged on the second clamping plate. Most of the parts are assembled in advance, so that the use is very convenient, and the trouble of assembling in the mounting process is saved; and the first clamping plate and the second clamping plate are always kept parallel, so that the clamping force applied to the parallel bunched cable is more uniform, and an insulating layer of the parallel bunched cable is prevented from being damaged due to overlarge local clamping force of the parallel bunched cable.

The invention relates to a power transmission line relaxation adjusting assembly which comprises a protection guide assembly and an adjusting frame, the protection guide assembly is used for guiding a wire penetrating through the protection guide assembly, and the protection guide assembly comprises a first protection guide assembly and a second protection guide assembly; the first protection guide assembly and the second protection guide assembly are connected in a sliding sleeving mode. An adjusting frame is arranged below the first protection guide assembly and fixedly connected with the first protection guide assembly through a set of connecting rods. An active adjusting assembly is arranged in the middle of the adjusting frame, the active adjusting assembly is connected with the adjusting frame through a set of connecting plates arranged in a bilateral symmetry mode, and active relaxation adjustment of the wire is achieved through the active adjusting assembly; the left and right sides of the adjusting frame are symmetrically provided with a group of passive adjusting assemblies, and the passive relaxation adjustment of the wire is realized through the passive adjusting assemblies. The device has the advantages of active tensioning adjustment, stable and reliable adjustment and line damage prevention.

The invention relates to the technical field of electric power fittings, in particular to an electric power fitting for a strain clamp, which comprises a U-shaped rod, two threaded parts and a mounting part, the outer wall of each threaded part is in threaded connection with a clamping lock part, and the inner wall of each clamping lock part is in sliding connection with the mounting part. The thread block is screwed with the help of a tool, through the anti-falling assembly and the safety mechanism, the first impact block can collide with the anti-falling blocks at the two ends in the upward moving process, and when the thread block moves to the end of the thread groove and the anti-falling blocks are overturned to the maximum angle and located in an outer cavity of the installation component, the disassembled clamping locking piece cannot directly fall off from the high altitude; the stability and safety of an electric power circuit are improved, two L-shaped blocks penetrate through a transverse groove and limit and support the bottom end of the clamping locking piece in a normal use scene of the electric power fitting, the clamping locking piece is effectively prevented from being accidentally loosened due to vibration in an electric power environment, the safety and stability of an electric power connection point are ensured again, and the service life of the electric power fitting is prolonged. And a solid guarantee is provided for reliable operation of a power system.

The present invention relates to the technical field of tension clamps, and specifically to an anti-loosening tension clamp, comprising a main body and a pressure plate, wherein the pressure plate is located above the main body, and a plurality of groups of arc-shaped limit plates are arranged on a side of the pressure plate away from the main body, and a plurality of groups of through-set mounting holes are arranged on both sides of the main body, and a U-shaped bolt is arranged in each of the plurality of arc-shaped limit plates, and the lower end of the U-shaped bolt passes through the mounting hole; a power transmission line is placed between the main body and the pressure plate, and the lower end of the U-shaped bolt is passed through the mounting hole of the main body, so that the pressure plate and the main body are abutted, and a nut is placed in a hexagonal groove, and the U-shaped bolt is pressed downward to drive a sliding seat downward, and when the sliding seat moves downward, the sliding seat is driven to rotate by the reset effect of a torsion spring, and when the sliding seat rotates, the nut is driven to rotate by the hexagonal groove, and when the nut rotates, it is threadedly connected with the U-shaped bolt, so as to facilitate rapid threaded connection between the nut and the U-shaped bolt.

The invention discloses a strain clamp device of a high-voltage power transmission line, and relates to the technical field of strain clamps, the strain clamp device comprises a winding and unwinding mechanism, the winding and unwinding mechanism is fixedly mounted at the middle position of the inner side surface of a fixed frame, and a cable is sleeved and fixed at the middle position of the surface of the winding and unwinding mechanism; the end face of the cable is wound in the axis direction of the winding and unwinding mechanism. According to the strain clamp device of the high-voltage power transmission line, when the slotting shaft rotates, the rotating roller is driven to rotate, a cable is unwound when the rotating roller rotates, meanwhile, the cable is pulled to a fixed point through external force driving, when the pulling force is removed, the surface of the cable is clamped by the first wire clamping mechanism and the second wire clamping mechanism, and therefore the cable is fixed. The surface of the cable has larger tension and is not easy to fall, so that the reversing cable is quickly clamped, and the problem of how to quickly erect and install the reversing wire which is bidirectionally stressed and pulled is solved.