CN108999458A - The double cross-arm assembly integral installation device and method of electric power - Google Patents

Abstract

The invention provides an overall installation device for electric double cross-arm assembly, which belongs to the technical field of cross-arm installation equipment, and includes a longitudinal support rod; There is a hanging piece for a traction rope; a hoop, which is rotatably arranged at the lower part of the longitudinal strut, for fixed connection with the utility pole; and a bracket, which is set between the horizontal strut and the hoop, and the The longitudinal struts rotate and are connected up and down along the length direction of the longitudinal struts, and are used to support the double cross-arm assembly and carry the double cross-arm assembly to move up and down or rotate. Also provided is an overall installation method of the electric double cross-arm assembly. The overall installation equipment for electric double cross-arm assembly provided by the invention aims to solve the technical problems of long power outage time and high construction intensity of workers on poles in the existing cross-arm installation technology.

Description

Overall installation equipment and method of electric double cross-arm assembly

technical field

The invention belongs to the technical field of cross-arm installation equipment, and more specifically relates to an overall installation equipment and method for an electric double cross-arm assembly.

Background technique

For the installation of the electric double cross-arm assembly, the traditional method is that the staff climb on the pole, and the personnel on the pole pull up and fasten the various parts of the cross-arm in turn through the insulating rope. Connecting plates and fastening bolts, U-shaped hanging rings, multiple overhangs, strain clamps, etc. The defects and deficiencies of the existing technology are: first, the power outage time is long; second, the construction intensity of the workers on the pole is high; third, there is a high risk of frequent power failure complaints; fourth, the repeated disassembly and installation of the wires causes partial wear on the metal surface, Thereby reducing the tensile strength of the wire and shortening the service life.

To sum up, it is imminent to realize the process reengineering of the overall installation of the electric double cross-arm assembly.

Contents of the invention

The purpose of the present invention is to provide an overall installation device and method for electric double cross-arm assembly, aiming to solve the technical problems of long power outage time and high construction intensity of workers on poles in the existing cross-arm installation technology.

In order to achieve the above purpose, the technical solution adopted by the present invention is to provide an overall installation equipment for electric double cross-arm assembly, including:

longitudinal struts;

The horizontal strut is vertically arranged on the upper part of the longitudinal strut, on which a hanging piece for hanging a traction rope is arranged;

a hoop, which is rotatably arranged at the lower part of the longitudinal strut, and is used for fixed connection with the utility pole; and

The bracket is arranged between the horizontal strut and the hoop, is connected with the vertical strut to rotate and rise and fall along the length direction of the longitudinal strut, and is used to support the double cross-arm assembly and carry the double cross-arm assembly. The cross arm assembly moves or turns up and down.

Further, the bracket includes a mounting frame and a supporting plate detachably arranged on the mounting frame, the mounting frame rotates and is arranged on the longitudinal rod along the length direction of the longitudinal rod, and the The pallet is used to support the double cross-arm assembly.

Further, there are two supporting plates and they are arranged symmetrically on both sides of the installation frame, a gap is provided between the two supporting plates, and the width of the gap is larger than the diameter of the utility pole.

Further, the pallet is inserted into the installation frame.

Further, the installation frame includes a lifting part and a rotating part rotatably arranged on the lifting part, the lifting part moves up and down along the length direction of the longitudinal rod and is arranged on the longitudinal rod, and the rotating part Both sides are symmetrically provided with outwardly extending support arms, and the support plate is inserted into the free ends of the support arms.

Further, the longitudinal support rod is a threaded rod, the bottom is fixed with a hand wheel, the lifting part is sleeved outside the longitudinal support rod, and the two are screwed together, and the rotating part is sleeved on the lifting part. outside, and the two are connected by bearings.

Further, the hanger includes a first hanger and a second hanger, the first hanger is set at the bottom of the free end of the transverse strut, and the second hanger is set at the bottom of the transverse strut and the above the top of the connecting end of the longitudinal strut.

Further, the first hanging member and the second hanging member are respectively fixed pulleys.

Further, the hoop includes a left hoop and a right hoop detachably connected by bolts, the left hoop includes a first upper hoop piece and a first lower hoop piece arranged parallel to each other, the first The upper hoop piece is connected to the first lower hoop piece through a first connecting piece;

The right hoop includes a second upper hoop piece and a second lower hoop piece arranged parallel to each other, the second upper hoop piece and the second lower hoop piece are connected by a second connecting piece, the The second connecting piece is rotatably connected with the longitudinal strut.

The overall installation method of the electric double cross-arm assembly includes the following steps:

Step 1, assembling the double cross-arm assembly on the ground;

Step 2, installing the overall installation equipment of the electric double cross-arm assembly on the top of the utility pole;

Step 3, pulling the assembled double cross-arm assembly to the top of the utility pole and placing it on the bracket;

Step 4, controlling the bracket to rise until its bottom is higher than the top of the utility pole;

Step 5, rotate the bracket so that the installation hole between the two cross-arms is located directly above the utility pole, and then control the lowering of the bracket until the double-cross-arm assembly is lowered to a preset value. The installation position of the cross-arm, install the double cross-arm assembly;

Step 6, after the installation of the double cross-arm assembly is completed, the overall installation equipment of the electric double-cross-arm assembly is removed and sent to the ground.

The beneficial effect of the overall installation equipment and method of the electric double cross-arm assembly provided by the present invention is that compared with the prior art, the overall installation equipment and method of the electric double cross-arm assembly of the present invention provide a The equipment for overall installation has changed the installation method of the double cross-arm, so that when the double-cross-arm assembly is installed, it is not necessary to pull the parts to the top of the utility pole through the traction rope before assembling, and the double cross-arm can be placed on the ground first. After the assembly is assembled, it is sent to the utility pole for overall installation through the overall installation equipment of the electric double cross-arm assembly. This setting is convenient, fast, efficient and reliable.

The application of the overall installation equipment for the electric double cross-arm assembly provided by the present invention in electric power production can effectively improve work efficiency, reduce the risk of high-altitude operations, shorten the working time, and realize the process reengineering of electric power cross-arm installation. Using the traditional double cross-arm installation method, it usually takes more than three hours to complete the wire erection. By adopting the installation equipment provided by the invention, the installation time on a basic terminal pole can be shortened by more than half. For the work of eliminating faulty lines, shortening the duration of power outages is equivalent to increasing sales benefits for power supply companies and reducing the risk of complaints. The overall installation equipment for the electric double cross-arm assembly provided by the embodiment of the present invention can be used as a standard production auxiliary equipment and widely used in the distribution network.

All in all, through the application of the overall installation equipment of the electric double cross-arm assembly provided by the present invention in electric power production, firstly, the power outage time is greatly shortened; secondly, the work intensity of climbing workers is significantly reduced; thirdly, the number of construction personnel The fourth is to increase electricity sales, improve customer satisfaction, reduce costs and increase efficiency for power supply companies, and realize the process reengineering of the overall installation of the power double cross-arm assembly.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the descriptions of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only of the present invention. For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 is a structural schematic diagram 1 of the overall installation equipment of the electric double cross-arm assembly provided by the embodiment of the present invention;

Fig. 2 is a top view structural diagram of the overall installation equipment of the electric double cross-arm assembly shown in Fig. 1;

Fig. 3 is a structural schematic diagram II of the overall installation equipment of the electric double cross-arm assembly provided by the embodiment of the present invention;

Fig. 4 is a schematic top view structural view of the overall installation equipment of the electric double cross-arm assembly shown in Fig. 3 .

In the figure: 1. Longitudinal pole; 2. Horizontal pole; 3. Traction rope; 4. Suspension piece; 41. First suspension piece; 42. Second suspension piece; 5. Hoop; 51. Left hoop; 511, upper hoop piece; 512, lower hoop piece; 513, connector; 52, right hoop; 521, upper hoop piece; 522, lower hoop piece; 523, connector; 6, utility pole; 7 , bracket; 71, mounting frame; 711, lifting part; 712, rotating part; 713, support arm; 72, pallet; 8, double cross-arm assembly; 9, hand wheel.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Please refer to FIG. 1 to FIG. 4 together, and now describe the overall installation equipment for the electric double cross-arm assembly provided by the embodiment of the present invention. The overall installation equipment of the electric double cross-arm assembly includes a longitudinal support rod 1; a horizontal support rod 2, which is vertically arranged on the upper part of the longitudinal support rod 1, on which a hanging piece 4 for hanging a traction rope 3 is arranged; a hoop 5. The rotation is arranged at the lower part of the longitudinal strut 1 for fixed connection with the utility pole 6; and the bracket 7 is set between the transverse strut 2 and the hoop 5, and rotates with the longitudinal strut 1 and along the vertical strut 1. Lifting connection in the length direction, used to support the double cross-arm assembly 8 and carry the double cross-arm assembly 8 to move up and down or rotate.

When installing the cross arm, first complete the assembly of the components of the double cross arm assembly 8 on the ground, including cross arms on both sides, five joint plates, fastening bolts, U-shaped hanging rings, multiple suspensions, tension clamps, etc. Carry all associated components; and install the traction rope 3 on the hanger 4 on the ground; then, the operator climbs to the top of the utility pole 6, installs the overall installation equipment for the electric double cross-arm assembly provided by the present invention, and completes the installation Position adjustment (so that the hoop 5 is installed below the installation position of the double cross-arm assembly, and the horizontal support rod 2 extends above the utility pole 6), tighten the hoop 5, and realize the fixation of the equipment and the utility pole 6; after that, the ground work Personnel, through the traction rope 3, pull the double cross-arm assembly 8 to the bracket 7 of the equipment, and then control the bracket 7 to drive the upper double cross-arm assembly 8 to rise above the top of the utility pole 6, clockwise or counterclockwise Turn the bracket 7 clockwise to make the installation hole between the two cross arms in the upper double cross arm assembly 8 rotate to the top of the utility pole 6, and then control the bracket 7 to descend, so that the double cross arm assembly 2 sets On the utility pole 6 and descend to the preset installation position of the double cross-arm assembly 8; finally, fasten the fastening screws and five-joint plates on the double-cross-arm assembly 2, and after it is installed, put the hoop 5 is taken off from utility pole 6, dismantles this equipment, afterward by traction rope, the overall installation equipment of electric double cross-arm assembly is sent on the ground, finishes this work.

Compared with the prior art, the overall installation equipment for the electric double cross-arm assembly provided by the present invention is provided with a device capable of integrally installing the double cross-arm assembly, which changes the installation method of the double cross-arm so that the double cross-arm When the assembly 8 is installed, it is not necessary to pull each component to the top of the utility pole 6 through the traction rope and then assemble it. The double cross-arm assembly 8 can be assembled on the ground first, and then the equipment can be installed as a whole through the electric double cross-arm assembly. Sent to the utility pole 6 for overall installation, this setting has the characteristics of convenience, quickness, high efficiency and reliability.

The application of the overall installation equipment for the electric double cross-arm assembly provided by the present invention in electric power production can effectively improve work efficiency, reduce the risk of high-altitude operations, shorten the working time, and realize the process reengineering of electric power cross-arm installation. Using the traditional double cross-arm installation method, it usually takes more than three hours to complete the wire erection. By adopting the installation equipment provided by the invention, the installation time on a basic terminal pole can be shortened by more than half. For the work of eliminating faulty lines, shortening the duration of power outages is equivalent to increasing sales benefits for power supply companies and reducing the risk of complaints. The overall installation equipment for the electric double cross-arm assembly provided by the embodiment of the present invention can be used as a standard production auxiliary equipment and widely used in the distribution network.

All in all, through the application of the overall installation equipment of the electric double cross-arm assembly provided by the present invention in electric power production, firstly, the power outage time is greatly shortened; secondly, the work intensity of climbing workers is significantly reduced; thirdly, the number of construction personnel The fourth is to increase electricity sales, improve customer satisfaction, reduce costs and increase efficiency for power supply companies, and realize the process reengineering of the overall installation of the power double cross-arm assembly.

As a specific implementation of the overall installation equipment of the electric double cross-arm assembly provided by the present invention, please refer to Figures 1 to 4, the bracket 7 includes a mounting frame 71 and a supporting plate 72 detachably arranged on the mounting frame 71, The installation frame 71 is rotated and installed on the longitudinal strut 1 up and down along the length direction of the longitudinal strut 1 , and the supporting plate 72 is used to support the double cross-arm assembly 8 .

When in use, the supporting plate 72 can be removed first, and after the double cross-arm assembly 8 is pulled to the top of the mounting frame 71, the supporting plate 72 is installed on the mounting frame 71, and then the traction rope 3 is lowered, and the double horizontal arm assembly Bear assembly 8 and place on the supporting plate 72 steadily again. This setting avoids the adverse effect of the addition of the supporting plate 72 on the upward traction of the double cross-arm assembly 8, so that the double cross-arm assembly 8 can move horizontally downward during use. This setting avoids the double cross-arm assembly 8 When pulling upwards, the parts on it collide with each other and come off or dislocate, which ensures the smoothness of the installation of the double cross-arm assembly 8 and meets its installation needs. At the same time, the supporting plate 72 is detachably connected with the mounting frame 71, which is convenient for moving, carrying and maintaining the equipment.

In this embodiment, the supporting plate 72 can adopt various forms, such as a flat plate or a grid plate with a hole in the middle, as long as the double cross-arm assembly 8 is sleeved on the utility pole 6 from top to bottom and gets final product.

As a specific implementation of the overall installation equipment for the electric double cross-arm assembly provided by the present invention, please refer to Figure 2 and Figure 4, there are two supporting plates 72 and they are arranged symmetrically on both sides of the mounting frame 71, and the two supporting plates There is a gap between 72, and the gap width is greater than the diameter of the utility pole 6.

Two pallets 72 are used, which reduces the weight required for the pallet 72 and the overall equipment, and facilitates its handling and installation. At the same time, the distance between the two pallets 72 is large enough to be applicable to utility poles 6 and double cross-arms of different specifications. Assembly 8 is required for installation.

As a specific embodiment of the overall installation equipment of the electric double cross-arm assembly provided by the present invention, the supporting plate 72 is plugged into the mounting frame 71 to realize the quick connection or separation of the two, which is convenient for the operator to operate at high altitude, and conforms to its Requirements.

As a specific implementation of the overall installation equipment for the electric double cross-arm assembly provided by the present invention, please refer to Figures 1 to 4, the installation frame 71 includes a lifting part 711 and a rotating part 712 that is rotatably arranged on the lifting part 711, and the lifting The part 711 moves up and down along the length direction of the longitudinal strut 1 and is arranged on the longitudinal strut 1 . The two sides of the rotating part 712 are symmetrically provided with support arms 713 extending outward.

The installation frame 71 proposed in this embodiment adopts the combination of the lifting part 711, the rotating part 712 and the support arm 713, which is convenient for the maintenance and installation of the equipment. The maximization of the space between 72 reduces the risk of hoisting of the pallet 72 to the double cross-arm assembly 8 during use.

In this embodiment, the support arm 713 can adopt a telescopic structure. When in use, the length of the support arm 713 is adjusted according to the length of the double cross-arm assembly 8, thereby realizing the adjustment of the width between the two supporting plates 72, ensuring that the upper double cross-arm assembly 8 is balanced in force, which reduces the risk of the double cross-arm assembly 8 falling when it rises, falls, and rotates with the bracket 7 . This setting effectively improves the flexibility of equipment assembly, ensures the safety of equipment use, and increases the breadth of its application range. The telescoping structure can adopt the existing plug-in connection and screw connection in the market, as long as the length adjustment of the support arm 713 can be realized.

Further, in this embodiment, an anti-slip pad or a magnetic block can also be added on the top surface of the supporting plate 72 to increase the stability of the relative positional relationship between it and the double cross-arm assembly 8 during operation, and reduce the overall stability of the double cross-arm assembly 8 during use. 8 and the risk of sliding relative to the pallet 72 or bracket 7 to ensure the safety of its use.

As a specific implementation of the overall installation equipment of the electric double cross-arm assembly provided by the present invention, please refer to Figure 1 and Figure 3, the longitudinal support rod 1 is a screw rod, the bottom is fixed with a hand wheel 9, and there are 711 sets of lifting parts It is arranged outside the longitudinal support rod 1, and the two are screwed together. The rotating part 712 is sleeved outside the lifting part 711, and the two are connected by bearings.

During use, turn the hand crank wheel 9 and the longitudinal pole 1 rotates thereupon, and the hand-held bracket 7 prevents it from rotating. And the rise or fall of the upper double cross-arm assembly 8. Longitudinal strut 1 adopts screw rod, cooperates with hand wheel 9, realizes the rise and fall of bracket 7, simple structure, easy operation, no need to rely on other power devices, effectively reduces the weight of equipment and manufacturing cost, is beneficial to its Handling and promotion.

As a specific embodiment of the overall installation equipment for the electric double cross-arm assembly provided by the present invention, please refer to Fig. 1 and Fig. 3, the hanger 4 includes a first hanger 41 and a second hanger 42, the first hanger 41 It is arranged at the bottom of the free end of the transverse strut 2 , and the second hanger 42 is set at the top of the connecting end of the transverse strut 2 and the longitudinal strut 1 .

When it is necessary to pull the double cross-arm assembly 8 upwards, hang the traction rope 3 on the first hanging part 41, and when it is necessary to transport the electric double cross-arm assembly up or down to install the equipment as a whole, hang the traction rope 3 It is provided on the second hanger 42 . Among them, the first hanger 41 is arranged at the bottom of the free end of the transverse strut 2, so that the distance between the double cross-arm assembly 8 and the longitudinal strut 1 is the farthest, which reduces the occurrence of the double cross-arm assembly 8 and the longitudinal strut 1 when it is transported upwards. The probability of collision ensures the stability of the upward traction of the double cross-arm assembly 8 and the stability of the connection between the overall installation equipment of the electric double cross-arm assembly and the utility pole 6. The second hanger 42 is arranged on the top of the connecting end of the transverse strut 2 and the longitudinal strut 1, which ensures that the equipment can adopt a vertical state when the overall installation of the equipment is carried up or down by the traction rope 3. The collision with the utility pole 6 during the transportation of the equipment is avoided, and the stability of the transportation of the equipment is ensured.

As a specific embodiment of the overall installation equipment of the electric double cross-arm assembly provided by the present invention, please refer to FIG. 1 and FIG. 3 , the first hanging member 41 and the second hanging member 42 are fixed pulleys respectively.

The first hanging part 41 and the second hanging part 42 adopt fixed pulleys respectively, which ensures the lower frictional force between the first hanging part 41 and the second hanging part 42 and the traction rope 3, and reduces the friction when using the traction rope 3 to transport things. The labor intensity and the risk of wear of the traction rope 3 during use ensure the convenience and safety of equipment installation and use.

As a specific implementation of the overall installation equipment of the electric double cross-arm assembly provided by the present invention, please refer to Figures 1 to 4, the hoop 5 includes a left hoop 51 and a right hoop 52 detachably connected by bolts, The hoop 51 includes a first upper hoop piece 511 and a first lower hoop piece 512 arranged parallel to each other, and the first upper hoop piece 511 and the first lower hoop piece 512 are connected by a first connecting piece 513; the right hoop 52 includes a second upper hoop piece 521 and a second lower hoop piece 522 arranged parallel to each other, the second upper hoop piece 521 and the second lower hoop piece 522 are connected by a second connecting piece 523, and the second connecting piece 523 It is rotatably connected with the longitudinal strut 1.

The left hoop 51 and the right hoop 52 respectively adopt the form of an upper hoop piece, a lower hoop piece and a connecting piece, which ensures that the friction between the hoop 5 and the utility pole 6 is large enough, and reduces the friction during use. The risk of relative sliding between the overall installation equipment of the power double cross-arm assembly and the utility pole 6 ensures the safety of the installation of the double cross-arm assembly 8 .

The invention also provides an overall installation method of the electric double cross-arm assembly. The overall installation method of the electric double cross-arm assembly includes the following steps:

Step 1, assemble the double cross-arm assembly 8 on the ground;

Step 2, installing the overall installation equipment of the electric double cross-arm assembly on the top of the utility pole 6;

Step 3, pulling the assembled double cross-arm assembly 8 to the top of the utility pole 6 and placing it on the bracket 7;

Step 4, the control bracket 7 rises until its bottom is higher than the top of the utility pole 6;

Step 5, rotate the bracket 7 so that the installation hole between the two cross-arms is located directly above the utility pole 6, and then control the bracket 7 to descend until the double-cross-arm assembly 8 descends to the preset cross-arm installation position, Install the double cross-arm assembly 8;

Step 6, after the installation of the double cross-arm assembly 8 is completed, remove the overall installation equipment of the electric double cross-arm assembly and send it to the ground.

Among them, when installing the overall installation equipment of the electric double cross-arm assembly, the hoop 5 can be installed below the installation position of the double cross-arm assembly, and the transverse support rod 2 extends to the top of the utility pole 6, which is convenient for the installation of the double cross-arm assembly 8 later. Installation; in step 3, the double cross-arm assembly 8 can be pulled by the operator on the ground by pulling the traction rope 3 arranged on the suspension part 4 .

The overall installation method of the electric double cross-arm assembly provided by the present invention adopts a brand-new method for installing the double cross-arm assembly, so that when the double cross-arm assembly 8 is installed, it is not necessary to pull each component to the Assembled after the top of utility pole 6, first double cross-arm assembly 8 can be assembled on the ground and then sent to utility pole 6 by the integral installation equipment of electric double cross-arm assembly for integral installation, this setting has convenience, Fast, efficient and reliable features.

The application of the overall installation equipment for the electric double cross-arm assembly provided by the present invention in electric power production can effectively improve work efficiency, reduce the risk of high-altitude operations, shorten the working time, and realize the process reengineering of electric power cross-arm installation. Using the traditional double cross-arm installation method, it usually takes more than three hours to complete the wire erection. By adopting the installation equipment provided by the invention, the installation time on a basic terminal pole can be shortened by more than half. For the work of eliminating faulty lines, shortening the duration of power outages is equivalent to increasing sales benefits for power supply companies and reducing the risk of complaints. The overall installation equipment for the electric double cross-arm assembly provided by the embodiment of the present invention can be used as a standard production auxiliary equipment and widely used in the distribution network.

All in all, through the application of the overall installation equipment of the electric double cross-arm assembly provided by the present invention in electric power production, firstly, the power outage time is greatly shortened; secondly, the work intensity of climbing workers is significantly reduced; thirdly, the number of construction personnel The fourth is to increase electricity sales, improve customer satisfaction, reduce costs and increase efficiency for power supply companies, and realize the process reengineering of the overall installation of the power double cross-arm assembly.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (10)

1. The overall installation equipment of the electric double cross-arm assembly is characterized in that it includes: longitudinal strut (1); The horizontal strut (2) is vertically arranged on the upper part of the longitudinal strut (1), on which a hanging piece (4) for hanging the traction rope (3) is arranged; The hoop (5), which is rotatably arranged at the lower part of the longitudinal strut (1), is used for fixed connection with the utility pole (6); and Bracket (7), arranged between the transverse strut (2) and the hoop (5), rotates with the longitudinal strut (1) and lifts along the length direction of the longitudinal strut (1) connected, used to support the double cross-arm assembly (8) and carry the double cross-arm assembly (8) to move up and down or rotate. 2. The overall installation equipment of electric double cross-arm assembly according to claim 1, characterized in that: the bracket (7) includes a mounting frame (71) and a detachable mounting frame (71) A supporting plate (72), the mounting frame (71) rotates and is arranged on the longitudinal supporting rod (1) up and down along the length direction of the longitudinal supporting rod (1), and the supporting plate (72) is used to support the Describe the double cross-arm assembly (8). 3. The overall installation equipment for electric double cross-arm assembly according to claim 2, characterized in that: there are two supporting plates (72) and they are arranged symmetrically on both sides of the mounting frame (71), two There is a gap between the supporting plates (72), and the width of the gap is larger than the diameter of the utility pole (6). 4. The overall installation equipment for electric double cross-arm assembly according to claim 3, characterized in that: the support plate (72) is plugged into the installation frame (71). 5. The overall installation equipment of electric double cross-arm assembly according to claim 4, characterized in that: the installation frame (71) includes a lifting part ( 711) and the rotating part (712) arranged on the lifting part (711), the rotating part (712) is symmetrically provided with supporting arms (713) extending outwards on both sides, and the supporting plate (72) Insert with the free end of the support arm (713). 6. The overall installation equipment of electric double cross-arm assembly as claimed in claim 5, characterized in that: the longitudinal support rod (1) is a screw rod, the bottom is fixed with a hand wheel (9), and the lifting part (711) is sheathed on the outside of the longitudinal pole (1), and both are threadedly connected, and the rotating part (712) is sheathed on the outside of the lifting part (711), and both are connected by a bearing. 7. The overall installation equipment of electric power double cross-arm assembly according to claim 1, characterized in that: the hanger (4) includes a first hanger (41) and a second hanger (42), and the first hanger (4) A hanger (41) is arranged at the bottom of the free end of the transverse strut (2), and the second hanger (42) is set at the connecting end of the transverse strut (2) and the longitudinal strut (1) top. 8. The overall installation equipment for electric double cross-arm assembly according to claim 7, characterized in that: the first hanging member (41) and the second hanging member (42) are fixed pulleys respectively. 9. The overall installation equipment for electric double cross-arm assembly according to any one of claims 1 to 8, characterized in that: the hoop (5) includes a left hoop (51) and a right hoop which are detachably connected by bolts. A hoop (52), the left hoop (51) includes a first upper hoop piece (511) and a first lower hoop piece (512) arranged parallel to each other, and the first upper hoop piece (511) connected with the first lower hoop piece (512) through a first connecting piece (513); The right hoop (52) includes a second upper hoop piece (521) and a second lower hoop piece (522) arranged parallel to each other, and the second upper hoop piece (521) and the second lower hoop piece (521) The hoop piece (522) is connected through a second connecting piece (523), and the second connecting piece (523) is rotatably connected with the longitudinal strut (1). 10. The overall installation method of the electric double cross-arm assembly is characterized in that it comprises the following steps: Step 1, assembling the double cross-arm assembly (8) on the ground; Step 2, installing the overall installation equipment of the electric double cross-arm assembly described in any one of claims 1 to 9 on the top of the utility pole (6); Step 3, pulling the assembled double cross-arm assembly (8) to the top of the utility pole (6) and placing it on the bracket (7); Step 4, controlling the bracket (7) to rise until its bottom is higher than the top of the utility pole (6); Step 5, rotate the bracket (7) so that the installation hole between the two cross arms is located directly above the utility pole (6), and then control the bracket (7) to descend until the The double cross-arm assembly (8) descends to the preset cross-arm installation position, and the double cross-arm assembly (8) is installed; Step 6, after the installation of the double cross-arm assembly (8) is completed, remove the overall installation equipment of the electric double-cross-arm assembly and send it to the ground.