A manufacturing process for ultra-high voltage transmission tower

Abstract

The present invention relates to the technical field of ultra-high voltage transmission tower production and discloses a production process for ultra-high voltage transmission towers, comprising the following steps: preparing connecting steel parts and cutting multiple connecting steel parts to different lengths using a cutting machine according to transmission tower manufacturing specifications; creating mounting grooves and mounting holes in the side walls and interior of the connecting steel parts; applying an anti-corrosion coating to the outer walls of the connecting steel parts; and transporting the multiple connecting steel parts to the installation location and assembling them. This ultra-high voltage transmission tower production process can limit and fix the bolt and nut assemblies after connection during assembly of the transmission tower's internal components, minimizing loose connections.

Description

Technical Field

[0001] The present invention relates to the technical field of ultra-high voltage transmission tower production, and in particular to a production process for ultra-high voltage transmission towers. Background Art

[0002] Ultra-high voltage transmission towers are an important part of the power system, with technical advantages such as large transmission capacity, long transmission distance, high operating efficiency and low transmission loss. However, traditional transmission tower manufacturing processes have problems such as high material consumption, high cost and poor corrosion resistance, and cannot meet the high strength, corrosion resistance, low material consumption and low cost requirements of ultra-high voltage transmission towers.

[0003] After searching, patent number CN105507649B discloses a UHV transmission tower and its manufacturing process. The transmission tower manufacturing process adopts the above-mentioned technical solution, and the cross bar is set into a multi-layer structure of an insulating core, an insulating inner layer and an insulating outer layer, which can effectively enhance the insulation performance of the cross bar, reduce the spacing between the three-phase conductors, and ensure that the UHV transmission tower can be used safely and normally; the insulating inner layer and the insulating core are wrapped layer by layer, and the insulating outer layer and the insulating inner layer are wrapped layer by layer, so that the insulation performance of the cross bar can be greatly improved; any two cross bars are connected by connecting the end of the cross bar to the angle steel, and the two ends of the insulating outer layer are sealed with sealed connectors, and the insulation performance is better in the sealed state.

[0004] However, when connecting the various components of the above-mentioned transmission tower, they are still assembled by bolt and nut assemblies. When there is a large wind pressure outside the tower body and it is easily subject to vibration, the use of threaded connection can easily cause loosening between the bolts and nuts, reducing the connection stability between the various steel materials and also reducing the stability of the entire tower body during use. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In response to the shortcomings of the existing technology, the present invention provides a production and manufacturing process for ultra-high voltage transmission towers, which has the advantage of being able to limit and fix the bolt and nut assemblies after connection when assembling the internal components of the transmission tower, thereby minimizing the occurrence of loose connections. This solves the problem that when the components of the transmission tower are connected, they are still assembled by bolt and nut assemblies, and when there is a large wind pressure on the outside of the tower body and it is easy to be vibrated, the use of threaded connection easily leads to loosening between the bolts and nuts.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a production process for an ultra-high voltage transmission tower, comprising the following steps:

[0009] S1: Prepare connecting steel parts and use a cutting machine to cut multiple connecting steel parts into different lengths according to the manufacturing specifications of the transmission tower;

[0010] S2: Open mounting grooves and mounting holes on the side walls and interior of the connecting steel parts;

[0011] S3: Apply anti-corrosion coating to the outer wall of the connected steel parts;

[0012] S4: Transport multiple connecting steel parts to the installation location and assemble them.

[0013] Preferably, the connecting steel member comprises a steel pipe, the interior of which is filled with a glass fiber reinforced plastic reinforcement layer.

[0014] Preferably, a mounting bolt is threadedly provided between two adjacent mounting grooves and mounting holes, the screw head of the mounting bolt is provided in the mounting groove, an annular groove is provided on the outside of the screw head of the mounting bolt, a first limiting mechanism for limiting the position of the mounting bolt is provided between the annular groove and the inner wall of the mounting groove, a mounting nut is threadedly provided on the threaded end of the mounting bolt, and a second limiting mechanism for limiting the position of the mounting nut is provided between the mounting nut and the lower end of the mounting bolt.

[0015] Preferably, the first limiting mechanism includes a card block, sleeves are fixed on both sides of the inner wall of the installation groove, the card block is slidably arranged in the sleeve, a spring is fixed between the end of the card block and the inner wall of the sleeve, a slide is fixedly penetrated inside the card block, both ends of the slide pass through the card block and extend to the outside, sliding grooves are opened on both sides of the inner wall of the sleeve, and the end of the slide is slidably arranged in the sliding grooves.

[0016] Preferably, the upper ends of the two adjacent blocks on the side close to each other are both inclined, so that the mounting bolt can push the block when it rotates into the connecting steel part, thereby facilitating the subsequent stable rebound of the block into the annular groove to limit and fix the mounting bolt.

[0017] Preferably, the second limiting mechanism includes two symmetrically arranged baffles, a groove is provided at the bottom of the mounting bolt, the two baffles are slidably arranged on both sides of the groove, and cover the lower end of the mounting nut, and a slot is provided inside the two baffles, and the bottom fixed cover of the groove is provided with a connecting plate, and a vertical rod is rotatably passed through the interior of the connecting plate, and the upper end of the vertical rod is fixedly sleeved with a rotating plate, and the top of the rotating plate is fixedly provided with two symmetrically arranged plug rods, which are inserted into the slots, and the lower end of the vertical rod is sleeved with a torsion spring, and the two ends of the torsion spring are fixedly connected to the vertical rod and the connecting plate respectively. The setting of the baffle can limit the locking position of the mounting nut at the bottom, and try to avoid loosening and separation of the mounting nut and the mounting bolt.

[0018] Preferably, a rotating block is fixedly provided at the bottom of the vertical rod, and two adjacent baffles are staggered.

[0019] Preferably, the outer wall of the steel pipe is provided with a plurality of heat dissipation holes arranged at intervals, which can enable the heat to flow out stably during the use of the transmission tower, thereby ensuring the stable use of the transmission tower.

[0020] (3) Beneficial effects

[0021] Compared with the prior art, the present invention provides a production process for ultra-high voltage transmission towers, which has the following beneficial effects:

[0022] 1. The manufacturing process of the UHV transmission tower can assemble multiple connecting steel parts to form a transmission tower through the provided connecting steel parts, mounting grooves, mounting holes, mounting bolts, mounting nuts, first limiting mechanisms and second limiting mechanisms. At the same time, the installation positions of the mounting bolts and mounting nuts are limited to minimize loose connections due to vibration, thereby ensuring the connection and operational stability between the various components of the transmission tower.

[0023] 2. The manufacturing process of the UHV transmission tower reduces the amount of steel consumption through the use of connecting steel parts, steel pipes, fiberglass and heat dissipation holes, while improving the overall strength of the transmission tower and the convenience of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the manufacturing process structure of a UHV transmission tower proposed by the present invention;

[0025] Figure 2 It is a schematic diagram of the connection structure of two adjacent connecting steel parts;

[0026] Figure 3 for Figure 2 A magnified view of the structure of part A in the middle;

[0027] Figure 4 for Figure 2 A magnified view of the structure of the middle part B;

[0028] Figure 5 for Figure 1 Side cross-sectional view of the connecting steel parts.

[0029] In the figure: 1 connecting steel parts, 2 mounting grooves, 3 mounting holes, 4 anti-corrosion coating, 5 steel pipes, 6 fiberglass reinforcement layers, 7 mounting bolts, 8 annular grooves, 9 mounting nuts, 10 clamping blocks, 11 sleeves, 12 springs, 13 slide plates, 14 baffles, 15 connecting plates, 16 vertical rods, 17 rotating plates, 18 plug rods, 19 torsion springs, 20 rotating blocks, and 21 heat dissipation holes. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figure 1-4 A manufacturing process for an ultra-high voltage transmission tower comprises the following steps:

[0032] S1: preparing a connecting steel member 1 and cutting a plurality of connecting steel members 1 into different lengths according to the transmission tower manufacturing specifications using a cutting machine. The connecting steel member 1 includes a steel pipe 5, the interior of the steel pipe 5 is filled with a glass fiber reinforced plastic reinforcement layer 6, and the outer wall of the steel pipe 5 is provided with a plurality of heat dissipation holes 21 arranged at intervals. When preparing the connecting steel member, first prepare the steel pipe 5 and clean the steel pipe. Then, fill the interior of the steel pipe 5 with glass fiber reinforced plastic to mix the two and form the connecting steel member. Then, using a cutting device such as a laser cutting machine, cut the connecting steel member into components of different lengths according to the transmission tower manufacturing requirements, and open heat dissipation holes 21 on the outer side of the steel pipe.

[0033] S2, S3 and S4: opening mounting grooves 2 and mounting holes 3 on the side walls and interior of the connecting steel parts 1, and applying anti-corrosion coating 4 to the outer walls of the connecting steel parts 1. Finally, transporting multiple connecting steel parts 1 to the installation position and assembling them. A mounting bolt 7 is threadedly passed through two adjacent mounting grooves 2 and mounting holes 3. The screw head of the mounting bolt 7 is arranged in the mounting groove 2. An annular groove 8 is provided on the outer side of the screw head of the mounting bolt 7. A first limiting mechanism for limiting the position of the mounting bolt 7 is provided between the annular groove 8 and the inner wall of the mounting groove 2. A mounting nut 9 is threadedly sleeved on the threaded end of the mounting bolt 7. A second limiting mechanism for limiting the position of the mounting nut 9 is provided between the mounting nut 9 and the lower end of the mounting bolt 7.

[0034] The first limiting mechanism includes a card block 10, and sleeves 11 are fixed on both sides of the inner wall of the installation groove 2. The card block 10 is slidably arranged in the sleeve 11. The upper ends of the adjacent sides of the two adjacent card blocks 10 are inclined. A spring 12 is fixed between the end of the card block 10 and the inner wall of the sleeve 11. A slide 13 is fixedly penetrated inside the card block 10. Both ends of the slide 13 pass through the card block 10 and extend to the outside. Slide grooves are opened on both sides of the inner wall of the sleeve 11, and the ends of the slide 13 are slidably arranged in the slide grooves;

[0035] The second limiting mechanism includes two symmetrically arranged baffles 14, a rotating block 20 is fixed to the bottom of the vertical rod 16, and the two adjacent baffles 14 are staggered. A groove is provided at the bottom of the mounting bolt 7. The two baffles 14 are slidably arranged on both sides of the groove and covered with the lower end of the mounting nut 9. A slot is provided inside the two baffles 14, and a connecting plate 15 is fixedly provided on the bottom of the groove. The vertical rod 16 is rotatably penetrated inside the connecting plate 15. The upper end of the vertical rod 16 is fixedly sleeved with a rotating plate 17. The top of the rotating plate 17 is fixed with two symmetrically arranged plug rods 18. The plug rod 18 is inserted into the slot. The lower end of the vertical rod 16 is sleeved with a torsion spring 19. The two ends of the torsion spring 19 are fixedly connected to the vertical rod 16 and the connecting plate 15 respectively.

[0036] After the preparation and cutting of the connecting steel parts 1 are completed, the connecting steel parts 1 are transported to the installation position of the transmission tower and assembly is started. The two adjacent connecting steel parts 1 are combined and the mounting bolts 7 are threaded. When the mounting bolts 7 are inserted into the mounting grooves 2, the screw heads of the mounting bolts 7 push the two adjacent clamping blocks 10, so that the clamping blocks 10 slide in the sliding fit between the slide plate 13 and the slide groove to squeeze the spring 12 and enter the sleeve 7. After the screw heads of the mounting bolts 7 come into contact with the inner wall of the mounting groove 2, the position of the mounting bolts 7 is fixed at this time, and the clamping blocks 10 can be clamped into the annular clamping groove 8 under the elastic force of the spring 12, thereby fixing the position of the mounting bolts 7. Further limiting is performed, and then the rotating block 20 can be rotated, so that the vertical rod 16 drives the rotating plate 17 to rotate, and the two baffles 14 are pulled into the groove by plugging the plug rod 18 and the slot. At this time, the torsion spring 19 is twisted, and then the mounting nut 9 is put on the outside of the threaded end of the mounting bolt 7, and locked in contact with the connecting steel part 1. Then the rotating block 21 is loosened, and the two baffles 14 rebound and block the mounting nut 9 under the torsion recovery of the torsion spring 19. At this time, the connection position of the mounting bolt 7 and the mounting nut 9 is stably limited, which can always remain stable under a vibration environment, thereby improving the connection stability S4 between the components of the transmission tower.

[0037] It should be noted that the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A manufacturing process for an ultra-high voltage transmission tower, comprising the following steps: S1: preparing connecting steel parts (1), and cutting a plurality of connecting steel parts (1) into different lengths according to the manufacturing specifications of the transmission tower by means of a cutting machine; S2: Mounting grooves (2) and mounting holes (3) are provided on the side walls and interior of the connecting steel member (1); a mounting bolt (7) is threadedly provided between adjacent mounting grooves (2) and mounting holes (3); the screw head of the mounting bolt (7) is provided in the mounting groove (2); an annular retaining groove (8) is provided on the outer side of the screw head of the mounting bolt (7); a first limiting mechanism for limiting the position of the mounting bolt (7) is provided between the annular retaining groove (8) and the inner wall of the mounting groove (2); a mounting nut (9) is threadedly provided on the threaded end of the mounting bolt (7); a second limiting mechanism for limiting the position of the mounting nut (9) is provided between the mounting nut (9) and the lower end of the mounting bolt (7); The first limiting mechanism includes a clamping block (10), sleeves (11) are fixedly provided on both sides of the inner wall of the installation groove (2), the clamping block (10) is slidably arranged in the sleeve (11), a spring (12) is fixedly provided between the end of the clamping block (10) and the inner wall of the sleeve (11), a slide plate (13) is fixedly passed through the interior of the clamping block (10), both ends of the slide plate (13) pass through the clamping block (10) and extend to the outside, and a slide groove is provided on both sides of the inner wall of the sleeve (11), and the end of the slide plate (13) is slidably arranged in the slide groove; The second limiting mechanism includes two symmetrically arranged baffles (14), a groove is provided at the bottom of the mounting bolt (7), the two baffles (14) are respectively slidably arranged on both sides of the groove and covered on the lower end of the mounting nut (9), a slot is provided inside the two baffles (14), the bottom fixed cover of the groove is provided with a connecting plate (15), a vertical rod (16) is rotatably passed through the interior of the connecting plate (15), the upper end of the vertical rod (16) is fixedly sleeved with a rotating plate (17), the top of the rotating plate (17) is fixedly provided with two symmetrically arranged plug rods (18), the plug rods (18) are inserted into the slot, the lower end of the vertical rod (16) is sleeved with a torsion spring (19), and the two ends of the torsion spring (19) are respectively fixedly connected to the vertical rod (16) and the connecting plate (15); A rotating block (20) is fixedly provided at the bottom of the vertical rod (16), and two adjacent baffles (14) are staggered. S3: Applying an anti-corrosion coating (4) to the outer wall of the connecting steel member (1); S4: transporting the plurality of connecting steel parts (1) to the installation location and assembling them.

2. The manufacturing process for a UHV transmission tower according to claim 1, characterized in that: The connecting steel member (1) comprises a steel pipe (5), the interior of the steel pipe (5) being filled with a glass fiber reinforced plastic reinforcement layer (6).

3. The manufacturing process for a UHV transmission tower according to claim 1, characterized in that: The upper ends of the adjacent two clamping blocks (10) on the side close to each other are both arranged in an inclined surface.

4. The manufacturing process for a UHV transmission tower according to claim 2, characterized in that: The outer wall of the steel pipe (5) is provided with a plurality of heat dissipation holes (21) arranged at intervals.

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