4344results about "Towers" patented technology

A stand is for moving an umbrella on a surface. The stand includes a base assembly to receive the umbrella and being over the surface, and arms. Each arm has a proximal end coupled to the base assembly, and a distal end extending outwardly from the base assembly. The stand also includes wheels respectively coupled to the distal ends of the arms, and supports coupled to the base assembly and extending outwardly from the base assembly, each of the supports has a pivot point for a respective one of the arms. The stand includes an actuator assembly coupled to the base assembly and configured to cause the base assembly to switch between a first stationary state and a second movable state.

Disclosed is a center pole fixing structure, including a center pole and a base. The base is provided with a center hole. The center pole is inserted into the center hole to be fixed. An anti-disengagement fixing structure is formed between the center pole and the base, achieves fixing by relative rotation of the center pole and the base, and constrains movement of the center pole in an axial direction thereof. A stopper for constraining the rotation of the center pole is disposed between the center pole and the base. The stopper is a movable pin, and the movable pin is controlled to enter or exit, thereby locking or unlocking the relative rotation of the center pole and the base. According to the disclosure, the center pole and the base are convenient to mount and dismount, and the fixed structure is firm and stable.

The present disclosure relates to an improved holding device for receiving and holding a variety of articles upright or vertically. The present holding device includes a flexible chamber configured for receiving articles of various shapes and sizes and securing the articles in the upright position. The stabilizing base can be any shape or design, and accommodates various decorations, logos and brands for display. The present disclosure further relates to an improved holding device assembly.

The invention belongs to the field of lattice tower prestressed cable construction, and particularly relates to a lattice tower prestressed cable penetrating method which is characterized in that an anchorage device support is arranged on a construction platform at the top of a lattice tower, an anchor ring, a backing ring and a steering wheel are sequentially arranged on the anchorage device support from top to bottom, and through holes in one-to-one correspondence with cable penetrating holes in the anchor ring are formed in the steering wheel; the through hole is a variable-diameter hole with the two ends large in hole diameter and the middle small in hole diameter, the inner hole wall of the through hole smoothly extends in the hole core direction, the first steel wire rope is restrained at the tower top and slowly droops, and a worker at the tower top pulls the first steel wire rope to control the steering wheel to move downwards to the corner position of the latticed column in a pipe cavity of the latticed column. The steel strand is matched with the hole wall or the hole edge of the through hole in the steering wheel in a surface contact mode, the situation that protruding radial shear force point positions exist due to point contact or line contact between the steel strand and the steering wheel is effectively avoided, and the steel strand is prevented from being fractured due to the influence of radial shear force.

The invention discloses a mixed tower wind turbine generator FRP-concrete-steel combined tower drum and a construction method.The tower drum comprises a steel tower section and a mixed tower section, the steel tower section is installed on the upper portion of the mixed tower section, the mixed tower section is composed of a plurality of tower drum sections which are sequentially connected from top to bottom, and each tower drum section is formed by combining a plurality of arc-shaped tower drum ring pieces in a surrounding mode; the tower drum ring pieces in the same tower drum section are fixedly connected, vertical joints between the vertically adjacent tower drum sections are installed in a staggered mode, and each tower drum ring piece comprises a reinforced concrete main body part, an inner steel pipe part and a CFRP cloth wrapping section arranged on the outer side of the reinforced concrete main body part. And the reinforced concrete main body parts and the inner steel pipe parts of the upper and lower adjacent tower drum sections are respectively connected, so that the adjacent tower drum sections are mutually fixed. The compressive strength and ductility of the wind power tower cylinder concrete can be improved, larger deformation is generated before the structure is damaged, more energy is absorbed, brittle failure is avoided, complex steel bar configuration is avoided, and the construction difficulty is reduced.

A post protector is disclosed that provides protection for the lower portion of a mailbox post. Protection is provided against string trimmers and edgers and other impacting implements in a landscape environment. A shielded chamber receives latches that allow simple and concealed assembly without the need for fasteners or tools. In one embodiment, the post protector may be stacked for creating a unique visual effect and added protection. In another embodiment, perimeter flanges for pinning to a soil surface are provided. The structure provides an aesthetic complement to downspout protectors having a similar profile.

A storage system includes a storage grid structure and multiple remotely operated storage bin handling vehicles. The storage grid structure includes vertical storage column profiles defining multiple storage columns in which storage bins can be stored one on top of another in vertical stacks. Each of the storage column profiles have an upper end and a lower end and the storage column profiles are interconnected at their upper ends by rails forming a horizontal rail grid upon which the bin handling vehicles may move in two perpendicular directions. The storage grid structure features grid supports include multiple base angle brackets. Each base angle bracket includes a vertical flange and a horizontal flange. The vertical flange is connected to a storage column profile. The horizontal flange is connected by bolts to a floor upon which the storage grid is arranged and a web interconnecting the flanges. Each of the flanges has a first end and a second end. The first end is arranged closer than the second end to the lower end of the storage column profile to which the vertical flange is connected. The web has a recess arranged between the first ends of the flanges.

The invention discloses a spliced cement telegraph pole and a splicing method thereof, and belongs to the technical field of cement telegraph poles. A spliced cement telegraph pole comprises an upper pole body, a lower pole body and a connecting pole body which are sequentially connected, the top end of the lower pole body is connected with the upper pole body through a connecting structure, the bottom end of the lower pole body is connected with the connecting pole body through a connecting structure, and a connecting base is arranged at the bottom end of the connecting pole body and arranged on an embedded base; a positioning mechanism is arranged between the connecting rod and the connecting seat, the positioning mechanism comprises a limiting structure and a locking structure, the limiting structure limits the connecting rod and the connecting seat, and the locking structure locks the connecting rod and the connecting seat. By the adoption of the splicing type cement telegraph pole and the splicing method thereof, the problems that an existing telegraph pole is unstable in splicing and inconvenient to splice can be solved.

The invention provides a hoisting method of a flare tower. The hoisting method comprises the following steps: calculating the total weight and the gravity center position of a flare tower assembly; according to the requirements of the lifting height and the preset inclination angle, a balance weight piece and a main lifting lug are additionally arranged on the flare tower, so that the included angle between the horizontal plane and the connecting line between the main lifting lug of the lifted flare tower and the gravity center of the flare tower assembly is within the preset inclination angle range; welding two connecting pieces and a positioning rod at the bottom of the flare tower; hoisting the flare tower in a horizontal mode to enable the flare tower to be separated from the supporting surface; inclining the flare tower to enable the included angle between the center line of the flare tower and the horizontal plane to be a preset inclination angle; the flare tower is lifted to a deck, and a positioning rod at the bottom of the flare tower gradually gets close to a limiting device arranged on the deck; slowly moving the flare tower until the positioning rod enters the limiting device so as to limit the rotation of the positioning rod; and rotating the flare tower to enable the flare tower to vertically stand on the deck, and welding the base of the flare tower and the deck.

The invention belongs to the technical field of cement pole materials, and particularly relates to a high-strength cement pole material and a preparation method thereof. The high-strength cement pole material is prepared from the following components in parts by weight: 450 to 500 parts of cement, 60 to 80 parts of fly ash, 500 to 550 parts of fine aggregate, 800 to 1000 parts of coarse aggregate, 80 to 120 parts of slag powder, 30 to 50 parts of composite fiber, 5 to 10 parts of redispersible latex powder, 2 to 6 parts of water reducing agent and 100 to 150 parts of water, the composite fibers comprise modified basalt fibers and polypropylene reticular fibers. According to the high-strength cement pole material provided by the invention, the polypropylene reticular fibers and the specific modified basalt fibers act together, so that the cement pole material has high compressive strength and high breaking strength, and a cement pole prepared from the cement pole material has high flexural capacity.

Provided is a wind turbine component for a wind turbine, in particular for a wind turbine tower and / or a rotor blade, to a wind turbine tower, to a rotor blade, to a wind turbine and to a method for producing a wind turbine component. Provided is a wind turbine component for a wind turbine, in particular for a wind turbine tower and / or a rotor blade, comprising a first wall element with a first inner surface and a first outer surface arranged opposite the latter, a corrugated structural element, wherein the structural element is arranged on the first inner surface or on the first outer surface, wherein the first wall element is connected to the structural element.

The invention discloses a damping device suitable for a wind power prestressed steel strand, which comprises a bottom plate, a hoop and an elastic lining, and is characterized in that the bottom plate is fixedly connected with the inner wall of a tower drum; the hoop and the elastic lining are both of a split structure, the elastic lining is used for bundling dispersed steel strands, the hoop is used for fixing the elastic lining, the hoop and the bottom plate are connected through a movable limiting assembly, and the movable limiting assembly is used for restraining swinging of the steel strands. The device has the advantages of being compact in structure, convenient to disassemble and assemble, high in reliability and the like, the bundling bottom plate is integrally mounted on the tower barrel wall in the middle of the steel strand, the split hoop and the elastic lining bundling steel strand are utilized, the movable limiting assembly is adopted between the hoop and the bottom plate to limit movement of the steel strand, and the problems that the middle area of an ultrahigh tower prestress system is not restrained, and construction is not limited are solved. The problem of interference friction with the tower drum wall and accessories due to large swing amount is solved, and the problem of failure caused by build-up force damage of the middle steel strand at the bundling fixing position is also solved.

The invention discloses a connector of a wind power concrete tower drum, a tower drum section and a tower drum construction method, the connector comprises a tower drum inner bottom flange and a lower turnup pipe drum, the lower turnup pipe drum is coaxially welded and fixed on the inner wall of the tower drum inner bottom flange to obtain a ring groove, and the ring groove is filled with ultra-high performance concrete. According to the tower tube sections, the connectors are arranged at the upper end and the lower end of a common concrete pipe, and prestressed tendons penetrate through ultra-high performance concrete of the connectors and the common concrete pipe and are locked through prestressed anchorage devices. The construction method comprises the following steps: 1, prefabricating the inner bottom flange and the lower flanging pipe barrel of the tower barrel in a factory; 2, coaxially welding the inner bottom flange of the tower barrel and the lower flanging pipe barrel; 3, a connector is manufactured, and a common concrete pipe is manufactured; 4, hoisting in place in sequence on site; and 5, the prestressed steel bars penetrate through the tower drum sections and are locked through the prestressed anchorage devices. The method has the technical effects that the bearing capacity of concrete tower drum connection is enhanced, the anti-fatigue performance of the concrete tower drum joint and the overall stability of the tower drum are improved, and the construction cost is low.

In a machine for driving screw anchors and other foundation components, a desired embedment depth is calculated based on a minimum required embedment depth, work point height and length of available upper leg sections. Once calculated, the machine automatically drives the screw anchor to the depth so that one of the available upper leg lengths will fit between the driven screw anchor and apex truss hardware. If uplift is detected during driving, the machine will add additional embedment depth. In-situ validation of driven screw anchors may be performed after the embedment depth is reached.

The invention discloses a windproof high-stability communication iron tower, and relates to the technical field of communication iron towers, the windproof high-stability communication iron tower comprises an iron tower body, a lifting assembly and a supporting assembly, in gale weather, a limiting unit relieves limiting of a lifting limiting block, a lifting mounting column vertically moves downwards, and a second tower body is driven to move downwards; the height of the second tower body is reduced, wind force borne by a signal communication device on the second tower body is reduced, the signal communication device is prevented from being damaged by wind blowing, the gravity center of the iron tower body is lowered due to lowering of the position of the second tower body, and the stability of the iron tower body is improved; when a lifting mounting column moves downwards, a lifting annular plate moves upwards, and when the lifting annular plate moves to the highest position, a locking unit can limit and fix the position of a movable connecting rod, so that the movable connecting rod is fixedly connected with a rotary supporting sleeve, the position of a supporting annular plate is fixed, and a plurality of supporting units support a first tower body; the anti-wind capacity of the first tower body is improved, and the anti-wind stability of the iron tower body is improved.

The invention relates to the field of building construction equipment, and discloses an intelligent material distributing machine of a tower building machine and a working method thereof.The intelligent material distributing machine of the tower building machine comprises a base fixed to the top of the tower building machine and further comprises a material distributing mechanism, a supporting arm, a rotary disc, a conveying pipe, a swing arm and a weight box; a pulling plate structure pulls a connecting rod to slide towards a first gear plate in a track plate, then the lower end of a supporting rod slides downwards in a track strip and then supports a guiding pipe, the guiding pipe rotating leftwards is supported, the influence of the gravity of the guiding pipe on a hydraulic press is reduced, and the situation that the hydraulic press is prone to being damaged due to the too large load is avoided. Impact force of concrete in the runner pipe is converted into stable supporting force of the buffer structure to the runner pipe, shaking of the runner pipe under the impact force of the concrete is reduced, the stability of concrete pouring of the runner pipe is improved, the stability of the discharging structure is enhanced, shaking caused by instability of the guide pipe can be avoided, and the load on a hydraulic press is reduced.

The embodiment of the invention relates to the technical field of electric power installation, and provides an electric power stay wire fitting which comprises a stay wire frame, two wire clamping positioning assemblies, a wire winding rod, a traction positioning assembly and a wire penetrating assembly, two stay wire sliding rods are detachably arranged on the stay wire frame in parallel, and a stay wire assembly moving in one direction is arranged between the two stay wire sliding rods in a sliding mode. The wire pulling assembly is used for pulling a steel strand, the two wire clamping and positioning assemblies have self-locking functions, are symmetrically arranged on the wire pulling assembly and are used for fixing the steel strand, the wire winding rod is rotationally arranged in the wire pulling assembly through the wire winding and positioning assembly, and a plurality of wire winding movable rods are arranged on the wire winding rod. The wire winding movable rod is located between the two wire clamping and positioning assemblies in the wire pulling assembly and used for bending the dispersed steel strands. By means of the technical scheme, the problems that in the prior art, when an electric power stay wire fitting conducts stay wire operation on a steel strand, the contact face is small, and the stay wire is prone to loosening are solved.

The utility model relates to an assembly type enclosure pier, which belongs to the technical field of power transmission line engineering and comprises a splicing pier body sleeved on an electric pole, the splicing pier body comprises two half pier bodies which are detachably spliced with each other, and reinforcing meshes are arranged in the half pier bodies; mounting grooves are formed in the two ends of each half pier body, the mounting grooves of the two half pier bodies are mutually spliced to form a clamping groove, a steel plate is clamped in the clamping groove, and the steel plate is detachably connected with the two half pier bodies through a plurality of connecting pieces. Only simple assembly is needed on site, the construction efficiency can be greatly improved, the environmental pollution can be reduced, and the construction quality can be well controlled.

The invention provides a lightweight wind power cable tower combined structure of a high-power fan and a design method of the lightweight wind power cable tower combined structure, and belongs to the technical field of fan equipment designing.The lightweight wind power cable tower combined structure comprises the steps that firstly, tower parameters are determined according to wind field conditions, load data are collected, and then a three-dimensional finite element analysis model is established to set material parameters and initial cable force; then determining the arrangement of supporting components and optimizing connecting nodes, and determining the optimal cable section and cable force through a pre-stressed cable section optimization equation set; then drawing a deepened detailed drawing to design connection nodes, and carrying out component splitting and connection scheme design according to transportation conditions; and finally, on-site construction and installation are conducted, a staged tensioning process is adopted, and the structural performance is verified after the wind turbine generator is installed. The problem that a high-power wind power tower tube structure is insufficient in lateral force resistance can be solved.

A portable umbrella stand includes a base having a plurality of slots, a plurality of extensions slidingly engaged with the plurality of slots and configured to be deployed outwards beyond a perimeter of the base, and a plurality of threaded anchors removably coupled to the base. The stand also includes a stanchion where a lower end is coupled to the base and an upper end extends away from the base. In addition, the stand includes a telescoping member having a lower end removably coupled to the upper end of the stanchion. An adjustable clamp is secured to the upper end of the telescoping member, where the adjustable clamp has a rotatable coupling configured to rotate relative to the telescoping member. The adjustable clamp comprises a bracket secured to the rotatable coupling and the bracket has a pair of opposing jaws extending therefrom that are configured to grasp an umbrella shaft.

The invention provides a power transmission line tower body assembly positioning and hoisting attitude control method in a desert environment, and relates to the technical field of power transmission engineering construction, and the method comprises the steps: obtaining power transmission line tower body structure parameters and desert environment parameters, the desert environment parameters comprise geological conditions, wind speed and wind direction; establishing a laser positioning reference system, wherein the laser positioning reference system comprises three laser emitting devices with angle and distance sensors; the tower body sections are assembled and positioned, space coordinates are established through laser marking projection, and the positions are corrected through a self-adaptive algorithm; installing an inertial measurement unit; establishing a hoisting attitude control system which comprises a main arm crane, an auxiliary crane and a tensioning device; in the hoisting process, the center-of-gravity offset is calculated based on the attitude data, and each device is controlled to realize attitude stabilization; and finally, curing materials are injected into the tower body foundation to complete installation.

The invention relates to the field of wind power facilities, and discloses a lattice type wind power tower and a construction method. The lattice type wind power tower comprises a first lattice section, a switching section and a second lattice section which are arranged from top to bottom, and the switching section is suitable for switching transition of the first lattice section and the second lattice section. Specifically, an adapter is used as a connection foundation, and a steering sleeve is used as a steering force guiding foundation of steel strands in corner column components in a first lattice section and a second lattice section; according to the connecting structure, the steps and the steering sleeve are fixedly configured, the hasp pieces are fixedly connected with the steel strand, at least two sets of steps and hasp pieces are correspondingly hasped, the steering part of the steel strand is located in the bending part of the steering sleeve, and therefore the purpose that the steel strand and the bending part are bent and arranged in a steering mode in a conformal mode is achieved. By means of the structure, steering slope changing between the two sections of the lattice tower can be achieved, prestress of the steel strands in the whole tower can be reasonably distributed, stress is prevented from being concentrated on the switching section, and the node design effectively meets the requirement for bearing capacity.

The invention discloses a multifunctional integrated power transmission power pole, and relates to the technical field of power transmission devices. Comprising a rod body; the cross arms are all arranged on the pole body, a plurality of connecting shafts are arranged on the cross arms, and the connecting shafts are fixedly connected with mounting shells; the number of the piston rods is consistent with that of the mounting shells, the piston rods are connected to the corresponding mounting shells in a sliding mode, the piston rods are fixedly connected with wire clamps, and the wire clamps are used for fixing cables; the number of the first moving rings is consistent with that of the piston rods, and the first moving rings are connected to the corresponding piston rods in a limiting and sliding mode. The first moving ring is driven by the piston rod to move synchronously, tensile force borne by a cable is buffered, dynamic tensile force generated by shaking of the cable is resolved, rigid impact borne by a rod body fixing point position is reduced, fatigue stress borne by a wire clamp mounting point for a long time is reduced, the probability that the wire clamp is loosened and damaged due to long-term vibration is reduced, and the service life of the wire clamp is prolonged. And the reliability of the whole cable fixing system is improved.

The embodiment of the invention provides a bolt joint space steel grid wind power tower construction method and a wind power tower. The method is applied to the technical field of wind power generation and comprises the steps that a rod piece stress grading system is built through a parameterized BIM model, and a grouting target point list is generated; the surface of the tower is subjected to three-dimensional scanning, the grouting position is determined, drilling is conducted, and a drilling steel pipe is formed; constructing a lifting mechanical model, calculating an optimal lifting position, and carrying out lifting installation; the water adding amount is dynamically adjusted, a control model is established, and the grouting material with the precise proportion is obtained; grouting control is conducted, the grouting end point is judged through double indexes of the pressure intensity integral model and the time change rate, and precise grouting is conducted on the steel pipe; and after grouting is completed, the wave velocity change is monitored in real time by adopting an ultrasonic penetration method. In this way, the node connection mode of the space steel grid wind power tower is optimally designed, so that rapid assembly of node connection and improvement of the overall performance of the structure are achieved.

The invention discloses a concrete wind power mixed tower construction stage strength development dynamic control and early warning method comprising the following steps: constructing a three-dimensional strength development reference curve based on ultrahigh strength concrete mix proportion, wind power mixed tower structure design and construction environment characteristic parameters; monitoring units are arranged along the height of the cylinder wall, and the sampling frequency of the monitoring units is adaptively adjusted along with the maintenance period; acquiring strain, temperature and water content data in real time, and converting the data into a real-time strength development index; comparing with a reference curve to generate a deviation coefficient matrix, and triggering primary early warning when the deviation in any direction continuously exceeds a threshold value; a self-adaptive regulation and control mechanism is started, and adjustment is conducted according to the temperature or water content deviation; and when the standard is reached and the deviation is stable, a process release signal is generated, and the construction data uploading block chain is used for updating the reference curve. According to the invention, strength dynamic management and control and accurate early warning are realized, the construction safety, quality stability and efficiency are improved, and technology iteration is promoted.

The invention discloses a multi-protection type electric power stay wire protection sleeve, and belongs to the field of electric power stay wire protection, the multi-protection type electric power stay wire protection sleeve comprises a protection tube, an extension mechanism is installed in the protection tube, a wind power collection mechanism is installed on the surface of the protection tube, and the extension mechanism comprises an electric air pump fixedly connected to the surface of the protection tube; the output end of the electric air pump is fixedly connected with an air inlet pipe; through cooperative use of the devices, the electric air pump is started, air enters the air bag, the air bag deforms, the extension pipe is driven to slide in the protection pipe, the extension pipe protects the electric stay wire, and therefore the protection range of the electric stay wire protection sleeve for the electric stay wire is further widened; and meanwhile, the extension pipe drives the protection sleeve to move, so that the protection range of the electric power stay wire protection sleeve on the electric power stay wire is widened, movement obstruction to the extension pipe is avoided, and the wind load performance of the electric power stay wire is improved through mutual cooperation of the protection pipe, the extension pipe and the protection sleeve.

A windmill construction (10), comprising a rotor-nacelle assembly (12) with blades (14), a tower (16), a substructure (20) and a foundation (22). The substructure (20) comprises a first guide collar (24) and a second guide collar (26) for support of the tower (16), said first guide collar (24) being located in a lower part of the substructure (20) and said second guide collar (26) being located in an upper part of the substructure (20). The substructure (20) comprises a jack-up assembly (30) for receipt of modular tower segments (18), said tower segments (18) are arranged to be assembled in the substructure (20) and erectable by the jack-up assembly (30) to produce an assembled tower (16). The invention is also directed to a method for assembly of a windmill construction.

The invention relates to the technical field of concrete electric poles, in particular to a steel rod tailing ultra-high-performance concrete electric pole and a manufacturing method thereof.The manufacturing method comprises the steps that S1, slag, fly ash and silicon powder are mixed and stirred at the rotating speed of 200-300 r / min for 15-20 min, and a needed mixture is prepared; s2, mixing the mixture obtained in the step S1 and the modified tailing sand according to the proportion of 1: 1, adding steel fibers, polyvinyl alcohol fibers, borax and a modified alkali activator, and uniformly mixing and stirring to obtain tailing concrete; s3, the prepared concrete is poured into an electric pole mold, the electric pole mold is put into a vibrating table to be vibrated for 3-5 min, after mold filling is completed, a test mold is cured for 20-24 h at the normal temperature and then demolded, a demolded test block is put into a curing box, curing is conducted for 7-8 days at the relative humidity of 85-90% and the room temperature of 15-25 DEG C, and the steel rod tailing ultra-high-performance concrete electric pole is obtained. Under the condition of normal-temperature maintenance, the refractory brick has excellent performances of relatively high compressive strength, simple manufacturing process, small environmental pollution, fire resistance, high temperature resistance and the like.

The invention discloses an anti-freezing and anti-thaw collapse device, and belongs to the technical field of concrete poles, the anti-freezing and anti-thaw collapse device comprises a soil body and an electric pole main body, a mounting hole is formed in the soil body, a pile casing is placed in the mounting hole, and the pile casing is connected with the soil body through a connecting mechanism; according to the anti-freezing pile, the connecting mechanism and the pile casing are matched with each other, the pile casing can be fixed into the soil body, so that when frost heaving force is generated in winter, the frost heaving force can only directly act on the pile casing and cannot directly act on the soil body, and the anti-freezing function is achieved; in addition, the connecting mechanism can fix the height of the pile casing and the electric pole main body, so that when the thaw collapse phenomenon occurs, the connecting mechanism can pull the electric pole main body and the pile casing, the thaw collapse prevention function is achieved, and the anti-freezing capability of the soil body is further improved. And the overall service life of the electric pole main body is prolonged.

The invention discloses a down-leading structure for converting a double-loop tower overhead line into a double-spliced cable, and belongs to the technical field of power transmission lines, the down-leading structure comprises a double-loop cable terminal tower, and the double-loop cable terminal tower is sequentially provided with a ground wire cross arm and three layers of wire cross arms including an upper layer, a middle layer and a lower layer from top to bottom; the two sides of each wire cross arm are respectively provided with a wire hanging point to form six wire hanging points in double loops; the lead of the upper-layer lead cross arm hanging point passes through the strain insulator string and then sequentially passes through the double-cross-arm type supporting insulators arranged on the middle-layer lead cross arm and the lower-layer lead cross arm to be led down to a double-spliced cable terminal head; a wire of a middle-layer wire cross arm hanging point is led down to a double-spliced cable terminal through a strain insulator string and a double-cross-arm type supporting insulator arranged on the lower-layer wire cross arm; and the lead of the lower-layer lead cross arm hanging point passes through the strain insulator string and then is directly led down to the double-spliced cable terminal head. According to the invention, the safety distance of the down lead in the process of converting the double-loop tower overhead line into the double-spliced cable can be ensured, and the down lead problem of the double-spliced cable is effectively solved.