Production and manufacturing process of ultra-high voltage power transmission tower

Abstract

The invention relates to the technical field of ultra-high-voltage power transmission tower production, and discloses an ultra-high-voltage power transmission tower production and manufacturing process which comprises the following steps that connecting steel parts are prepared, and the multiple connecting steel parts are cut by different lengths by means of a cutting machine according to the manufacturing specification of a power transmission tower; mounting grooves and mounting holes are formed in the side wall and the interior of the connecting steel part; the outer wall of the connecting steel part is coated with an anti-corrosion coating; and the multiple connecting steel parts are transported to the installation position and assembled. According to the production and manufacturing process of the ultra-high voltage power transmission tower, when internal assemblies of the power transmission tower are assembled, the bolt and nut assemblies are limited and fixed after being connected, and connection looseness is avoided as much as possible.

Description

Technical Field

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

[0002] UHV 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, the traditional transmission tower manufacturing process has problems such as large material consumption, high cost and poor corrosion resistance, which cannot meet the high strength, corrosion resistance, low consumables and low cost requirements of UHV transmission towers.

[0003] After searching, the patent number CN105507649B discloses a UHV transmission tower and its manufacturing process. The transmission tower manufacturing process adopts the above-mentioned technical scheme, 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 ends of the cross bars 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 the components of the above-mentioned transmission tower are connected, they are still assembled by bolt and nut assemblies. When there is a large wind pressure on the outside of the tower body and it is easily subject to vibration, the use of threaded connection can easily lead to loosening between the bolts and nuts, reducing the connection stability between the steel materials and the stability of the tower body as a whole during use. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a production and manufacturing process for an ultra-high voltage transmission tower, 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 avoiding loose connections as much as possible. 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 is likely to cause looseness between the bolts and nuts.

[0007] (II) Technical solution

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

[0009] S1: preparing connecting steel parts, and cutting multiple connecting steel parts to different lengths according to the manufacturing specifications of the transmission tower by means of a cutting machine;

[0010] S2: Opening installation grooves and installation 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 arranged in the mounting groove, an annular groove is provided on the outer side 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 fixedly provided on both sides of the inner wall of the installation groove, the card block is slidably arranged in the sleeve, a spring is fixedly provided between the end of the card block and the inner wall of the sleeve, a slide plate is fixedly penetrated inside the card block, both ends of the slide plate 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 plate 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 springing 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 respectively slidably arranged on both sides of the groove and cover the lower end of the mounting nut, slots are provided inside the two baffles, the bottom fixed cover of the groove is provided with a connecting plate, a vertical rod is rotatably penetrated inside the connecting plate, a rotating plate is fixedly sleeved on the upper end of the vertical rod, two symmetrically arranged plug rods are fixed on the top of the rotating plate, the plug rods are inserted into the slots, the lower end of the vertical rod is sleeved with a torsion spring, the two ends of the torsion spring are respectively fixedly connected to the vertical rod and the connecting plate, the setting of the baffle can limit the locking position of the mounting nut at the bottom to avoid loosening and separation of the mounting nut and the mounting bolt as much as possible.

[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, so that the heat can flow out stably during the use of the transmission tower, thereby ensuring the stable use of the transmission tower.

[0020] (III) 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 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 avoid loose connections due to vibration as much as possible, thereby ensuring the connection and use stability between the components of the transmission tower.

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

[0024] Figure 1 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 The structure enlarged diagram of the local A part;

[0027] Figure 4 for Figure 2 The structure enlarged diagram of the local B part;

[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 coatings, 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 be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-4 , a manufacturing process for a UHV transmission tower comprises the following steps:

[0032] S1: preparing a connecting steel part 1, and cutting a plurality of connecting steel parts 1 into different lengths according to the manufacturing specifications of a transmission tower by means of a cutting machine, wherein the connecting steel part 1 comprises 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 part, firstly the steel pipe 5 is prepared and cleaned, and then the glass fiber reinforced plastic is filled into the interior of the steel pipe 5 to mix the two and form a connecting steel part, and then the connecting steel part is cut into components of different lengths according to the manufacturing requirements of the transmission tower by means of cutting equipment such as a laser cutting machine, and heat dissipation holes 21 are opened on the outer side thereof;

[0033] S2, S3 and S4: the side wall and the interior of the connecting steel member 1 are provided with the installation groove 2 and the installation hole 3, and the outer wall of the connecting steel member 1 is coated with the anti-corrosion coating 4. Finally, the multiple connecting steel members 1 are transported to the installation position and assembled. A common threaded installation bolt 7 is provided between two adjacent installation grooves 2 and installation holes 3. The screw head of the installation bolt 7 is arranged in the installation groove 2. An annular groove 8 is provided on the outer side of the screw head of the installation bolt 7. A first limiting mechanism for limiting the position of the installation bolt 7 is provided between the annular groove 8 and the inner wall of the installation groove 2. A mounting nut 9 is provided on the threaded end of the installation bolt 7. A second limiting mechanism for limiting the position of the installation nut 9 is provided between the installation nut 9 and the lower end of the installation bolt 7.

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

[0035] The second limiting mechanism includes two symmetrically arranged baffles 14, a rotating block 20 is fixedly arranged at 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, and 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, and a connecting plate 15 is fixedly covered at the bottom of the groove. A vertical rod 16 is rotatably penetrated inside the connecting plate 15, and a rotating plate 17 is fixedly sleeved at the upper end of the vertical rod 16. Two symmetrically arranged plug rods 18 are fixedly arranged on the top of the rotating plate 17, and the plug rods 18 are inserted into the slots. A torsion spring 19 is sleeved at the lower end of the vertical rod 16, and the two ends of the torsion spring 19 are respectively fixedly connected to the vertical rod 16 and the connecting plate 15;

[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 assembled. The two adjacent connecting steel parts 1 are combined and the mounting bolts 7 are inserted. 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 contact the inner wall of the mounting groove 2, the position of the mounting bolts 7 is fixed, 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 the insertion of the plug rod 18 and the slot. At this time, the torsion spring 19 is twisted, and then the mounting nut 9 is sleeved on the outside of the threaded end of the mounting bolt 7, and locked with the connecting steel part 1, and 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, and 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 variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0038] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present 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 a connecting steel piece (1), and cutting a plurality of connecting steel pieces (1) into different lengths according to the manufacturing specifications of a transmission tower by means of a cutting machine; S2: Opening the mounting groove (2) and the mounting hole (3) on the side wall and the interior of the connecting steel member (1); S3: applying an anti-corrosion coating (4) to the outer wall of the connecting steel member (1); S4: transporting a plurality of connecting steel parts (1) to an installation location and assembling them.

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

3. The manufacturing process of a UHV transmission tower according to claim 1, characterized in that: A mounting bolt (7) is threadedly provided between 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 provided on the threaded end of the mounting bolt (7); and 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).

4. The manufacturing process of a UHV transmission tower according to claim 3, characterized in that: The first limiting mechanism comprises 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 penetrated inside the clamping block (10), both ends of the slide plate (13) pass through the clamping block (10) and extend to the outside, and sliding grooves are 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 sliding grooves.

5. The manufacturing process of a UHV transmission tower according to claim 4, characterized in that: The upper ends of two adjacent clamping blocks (10) on the side close to each other are both arranged in an inclined surface.

6. The manufacturing process of a UHV transmission tower according to claim 3, characterized in that: The second limiting mechanism comprises 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 cover the lower end of the mounting nut (9), a slot is provided inside the two baffles (14), a connecting plate (15) is fixedly provided at the bottom of the groove, a vertical rod (16) is rotatably penetrated inside the connecting plate (15), a rotating plate (17) is fixedly sleeved at the upper end of the vertical rod (16), two symmetrically arranged plug rods (18) are fixedly provided at the top of the rotating plate (17), the plug rods (18) are inserted into the slot, a torsion spring (19) is sleeved at the lower end of the vertical rod (16), and the two ends of the torsion spring (19) are respectively fixedly connected to the vertical rod (16) and the connecting plate (15).

7. The manufacturing process of a UHV transmission tower according to claim 6, characterized in that: A rotating block (20) is fixedly provided at the bottom of the vertical rod (16), and two adjacent baffles (14) are arranged in a staggered manner.

8. The manufacturing process of 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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