Extra-high voltage electric iron tower made of composite material

Abstract

The invention relates to the technical field of electric power facilities, and provides a composite extra-high voltage electric power iron tower which comprises a tower body and cantilevers located on the two sides of the top of the tower body. A lifting mechanism and a traction mechanism are arranged on the tower body, the traction mechanism is driven by the lifting mechanism to pull the suspension assembly from the low position to the high position, the lifted suspension assembly can be automatically hooked by the supporting hanging piece, and supporting rods used for supporting and stabilizing the supporting hanging piece are fixed to the two sides of the top of the tower body. The tower body is made of the carbon fiber or glass fiber reinforced resin composite material instead of traditional steel, the weight of the tower body is greatly reduced, the corrosion resistance is enhanced, the service life is prolonged, the maintenance frequency is reduced, the electrical insulation performance can be improved through the composite material, the influence of natural disasters such as lightning stroke on lines is reduced, and the power transmission safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power facilities, and specifically, to a UHV power tower made of composite materials. Background Art

[0002] A UHV power tower is a special structural facility used to support and fix UHV transmission lines and belongs to the key infrastructure in the power system. It can carry equipment such as conductors, lightning conductors, and insulators, keeping them at a certain height and spacing to avoid contact with the ground or obstacles. The UHV power tower usually adopts a self-standing tower, and the tower body is welded by angle steel or steel pipes, with a height exceeding 100 meters, and is used to support ±800 kV DC transmission lines.

[0003] After retrieval, the patented technology with the publication number CN209817560U discloses a wind-resistant UHV power tower with high stability, including a tower and a foundation. The tower is fixedly installed at the upper end of the foundation through bolts. Insulating devices are fixedly installed on both sides of the upper end of the tower. The insulating device includes a shock-absorbing box. On both sides of the bottom end inside the shock-absorbing box, lower sleeves are welded. An upper sleeve is slidably installed at the upper end inside the lower sleeve. A piston is welded to the bottom end of the upper sleeve, and the piston is slidably connected to the lower sleeve. A spring is welded to the bottom end of the piston. By installing the shock-absorbing box, this UHV power tower can reduce the impact force of the piston on the bottom end of the lower sleeve, and at the same time, buffer and release the pressure received, thereby reducing the vibration received by the umbrella plate. Thus, the vibration generated by the swing of the conductor can be absorbed by the spring and not transmitted to the UHV power tower, which can protect the UHV power tower, thereby improving the stability and wind resistance of the UHV power tower and extending its service life.

[0004] However, the above UHV power tower still has the following problems: The tower body of the above UHV power tower is welded by angle steel or steel pipes, with a relatively large self-weight of the tower body and weak corrosion resistance, which affects its service life. In addition, the electrical insulation performance of steel materials is relatively low, and natural disasters such as lightning strikes pose a great safety hazard to the line, reducing the transmission safety. Summary of the Invention

[0005] The present invention provides a UHV power tower made of composite materials, which solves the problem that the tower body of the existing UHV power tower is welded by angle steel or steel pipes.

[0006] The technical solution of the present invention is as follows: A UHV power transmission tower made of composite materials, including a tower body and cantilevers located on both sides of the top of the tower body. The cantilever includes a suspension assembly and a support hanger arranged corresponding to the suspension assembly up and down. A lifting mechanism is provided on the tower body, and a traction mechanism that pulls the suspension assembly from a lower position to a higher position under the drive of the lifting mechanism. The support hanger can automatically hook the lifted suspension assembly. On both sides of the top of the tower body, there are fixed support rods for supporting and stabilizing the support hanger.

[0007] Preferably, the tower body includes a lower tower section, a middle tower section, and an upper tower section assembled in sequence from bottom to top. The lower tower section, the middle tower section, and the upper tower section are all made of composite materials of carbon fiber or glass fiber reinforced resin.

[0008] Preferably, the lower tower section includes four support legs distributed in a rectangle. Each support leg is composed of three support foot rods and several diagonal struts supported between the three support foot rods. The four support legs gradually converge towards the bottom of the middle tower section from bottom to top.

[0009] Preferably, the middle tower section has a frustum-shaped box structure. It is integrally composed of four middle-section frame rods and several middle-section cross bars and middle-section scissor struts supported between the four middle-section frame rods. The four middle-section frame rods gradually converge towards the bottom of the upper tower section from bottom to top.

[0010] Preferably, the upper tower section has a cubic box structure. It is integrally composed of four upper-section frame rods and several upper-section cross bars and upper-section scissor struts supported between the four upper-section frame rods.

[0011] Preferably, the suspension assembly includes a suspension cross bar, which is hinged to the upper tower section. Suspension hanging rods are fixed at both ends of the suspension cross bar. The outer ends of the two suspension hanging rods intersect, and a support is fixed at the intersection part. A hanging ring is fixed above the support, and a clamp is fixed below the support.

[0012] Preferably, a connecting rod parallel to the suspension cross bar is fixed between the two suspension hanging rods on the same layer, and the connecting rods between the upper and lower layers are hinged to each other through a linkage rod.

[0013] Preferably, the support hanger includes a support cross bar, which is hinged to the upper tower section. Support hanging rods are fixed at both ends of the support cross bar. The outer ends of the two support hanging rods intersect, and a hook for hanging the hanging ring is fixed at the intersection part. A blocking rod parallel to the support cross bar is fixed between the two support hanging rods. The end of the support rod is Y-shaped and can support the blocking rod.

[0014] Preferably, the lifting mechanism includes a base, which is fixed on the lower section of the tower, a driven shaft is rotatably connected to the inner side of the base, a worm wheel and a winding wheel are fixed to the outer side of the driven shaft, a worm is meshed below the worm wheel, the worm is rotatably connected to the base, a turntable is fixed to one end of the worm, and a handle is fixed to the surface of the turntable.

[0015] Preferably, the traction mechanism includes a main lifting rope, one end of which is fixed to a winding wheel, and the other end of the main lifting rope is fixed with two auxiliary lifting ropes, the two auxiliary lifting ropes are respectively connected to connecting rods on the top floor, and pulleys for guiding the two auxiliary lifting ropes are arranged on both sides of the upper tower.

[0016] The beneficial effects of the present invention are:

[0017] 1. The tower body of the present invention adopts a segmented design of a lower tower, a middle tower, and an upper tower. The rectangularly distributed supporting legs and the folding frame structure significantly improve the transportation convenience and on-site assembly efficiency. It is especially suitable for complex terrains. The segmented structure can flexibly adjust the height and load capacity according to actual needs, reducing the construction difficulty and cost.

[0018] 2. The tower body material of the present invention adopts a composite material of carbon fiber or glass fiber reinforced resin to replace traditional steel, which greatly reduces the weight of the tower body, enhances corrosion resistance, prolongs service life, and reduces maintenance frequency. The composite material can improve electrical insulation performance, reduce the impact of natural disasters such as lightning strikes on the line, and improve power transmission safety;

[0019] 3. The suspension ring of the suspension assembly and the hook of the support hanger in the present invention form an automatic locking mechanism, which, combined with the Y-shaped support head of the support rod, ensures the stability of the suspension assembly in a fixed position and reduces manual intervention. The cooperation between the blocking rod and the Y-shaped support rod optimizes the force distribution and enhances the wind resistance and dynamic stability of the overall structure.

[0020] 4. The present invention realizes manual lifting through worm gear transmission, and uses its self-locking characteristics to prevent the suspension assembly from accidentally sliding down. The operation is safe and reliable. The articulated design of the multi-layer connecting rods and the linkage rods ensures that the suspension rods on each layer are lifted and lowered synchronously to avoid tilting or imbalance, thereby improving installation accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a schematic diagram of the structure of a composite material ultra-high voltage power tower proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of the front view structure of a composite material ultra-high voltage power tower proposed by the present invention;

[0024] Figure 3 Front view structural schematic diagram of the tower body proposed by the present invention;

[0025] Figure 4 Structural schematic diagram of the support hanging part proposed by the present invention;

[0026] Figure 5 Structural schematic diagram of the suspension assembly proposed by the present invention;

[0027] Figure 6 Structural schematic diagram of the lifting mechanism proposed by the present invention;

[0028] Figure 7 is Figure 1 Enlarged structural schematic diagram at position A in

[0029] Figure 8 is Figure 2 Enlarged structural schematic diagram at position B in

[0030] In the figure: 1. Tower body; 11. Lower tower section; 111. Support leg rod; 112. Diagonal brace rod; 12. Middle tower section; 121. Intermediate section frame rod; 122. Intermediate section cross bar; 123. Intermediate section scissors brace rod; 13. Upper tower section; 131. Upper section frame rod; 132. Upper section cross bar; 133. Upper section scissors brace rod; 2. Cantilever; 21. Suspension assembly; 211. Suspension cross bar; 212. Suspension suspension rod; 213. Support; 214. Suspension ring; 215. Clamp; 216. Connecting rod; 217. Linking rod; 22. Support hanging part; 221. Support cross bar; 222. Support suspension rod; 223. Hook; 224. Stop bar; 3. Traction mechanism; 31. Main hoisting rope; 32. Auxiliary hoisting rope; 33. Pulley; 4. Support rod; 5. Lifting mechanism; 51. Base; 52. Driven shaft rod; 53. Worm gear; 54. Reel; 55. Worm; 56. Turntable; 57. Handle. Specific implementation manners

[0031] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0032] Please refer to Figure 1 and Figure 2, the present invention provides a technical solution: a UHV power transmission tower made of composite materials, including a tower body 1 and cantilevers 2 located on both sides of the top of the tower body 1. The cantilever 2 includes a suspension assembly 21 and a support hanger 22 arranged corresponding to the suspension assembly 21 up and down. A lifting mechanism 5 is provided on the tower body 1, and a traction mechanism 3 that pulls the suspension assembly 21 from a lower position to a higher position under the drive of the lifting mechanism 5. The support hanger 22 can automatically hook the lifted suspension assembly 21. On both sides of the top of the tower body 1, there are fixed support rods 4 for supporting and stabilizing the support hanger 22.

[0033] Please refer to Figure 3 , the tower body 1 includes a lower tower section 11, a middle tower section 12, and an upper tower section 13 assembled in sequence from bottom to top. The structural materials of the three tower sections use carbon fiber or fiberglass-reinforced resin to replace traditional steel, greatly reducing the weight of the tower body, enhancing the corrosion resistance, extending the service life, and reducing the maintenance frequency. Among them, the lower tower section 11 includes four support legs distributed in a rectangle. Each support leg is composed of three support foot rods 111 and several diagonal braces 112 supported between the three support foot rods 111. The four support legs gradually converge towards the bottom of the middle tower section 12 from bottom to top. The tower body 1 adopts a segmented design of the lower tower section 11, the middle tower section 13, and the upper tower section 13. Through the rectangularly distributed support legs and the converging frame structure, the transportation convenience and on-site assembly efficiency are significantly improved.

[0034] Furthermore, the middle tower section 12 has a frustum-shaped frame structure. It is entirely composed of four middle-section frame rods 121, and several middle-section crossbars 122 and middle-section scissor braces 123 supported between the four middle-section frame rods 121. The four middle-section frame rods 121 gradually converge towards the bottom of the upper tower section 13 from bottom to top. The upper tower section 13 has a cubic frame structure. It is entirely composed of four upper-section frame rods 131, and several upper-section crossbars 132 and upper-section scissor braces 133 supported between the four upper-section frame rods 131. The frustum-shaped frame structure of the middle tower section 12 gradually converges, and the cubic frame structure of the upper tower section 13 forms a gradient stress system, effectively dispersing the wind load and its own gravity, and enhancing the overall anti-overturning ability. The setting of multiple layers of scissor braces enhances the lateral stiffness of the tower body 1 and suppresses vibration and deformation.

[0035] Please refer to Figure 5 , the suspension assembly 21 includes a suspension crossbar 211. The suspension crossbar 211 is hinged to the upper tower section 13. At both ends of the suspension crossbar 211, there are fixed suspension rods 212. The outer ends of the two suspension rods 212 intersect, and a support 213 is fixed at the intersection part. Above the support 213, there is a fixed lifting ring 214, and below the support 213, there is a fixed clamp 215. Furthermore, between the two suspension rods 212 of the same layer, there is a connecting rod 216 arranged parallel to the suspension crossbar 211, and the connecting rods 216 between the upper and lower layers are hinged to each other through a linkage rod 217.

[0036] Please refer to Figure 4 Figure 4 , the support hanging part 22 includes a support cross bar 221, the support cross bar 221 is hinged to the upper tower section 13, support hanging rods 222 are fixed at both ends of the support cross bar 221, the outer ends of the two support hanging rods 222 intersect and a hook 223 for hanging the hanging ring 214 is fixed at the intersecting part, and a stop bar 224 parallel to the support cross bar 221 is fixed between the two support hanging rods 222. The end of the support rod 4 is Y-shaped and can support the stop bar 224.

[0037] Please refer to Figure 6 Figure 6 , the lifting mechanism 5 includes a base 51, the base 51 is fixed on the lower tower section 11, a driven shaft rod 52 is rotatably connected inside the base 51, a worm gear 53 and a winding wheel 54 are fixed on the outer side of the driven shaft rod 52, a worm 55 is meshed below the worm gear 53, the worm 55 is rotatably connected to the base 51, a turntable 56 is fixed at one end of the worm 55, and a handle 57 is fixed on the surface of the turntable 56. Manual lifting is realized through the transmission of the worm gear 53 and the worm 55, and its self-locking characteristic is used to prevent the suspension assembly 21 from accidentally sliding down. The operation is safe and reliable. The articulated design of the multi-layer connecting rods 216 and the linkage rod 217 ensures the synchronous lifting of each layer of suspension hanging rods 212, avoids tilting or imbalance, improves the installation accuracy and efficiency. The hanging ring 214 of the suspension assembly 21 and the hook 223 of the support hanging part 22 form an automatic locking mechanism. Combined with the Y-shaped support head of the support rod 4, it ensures the stability of the suspension assembly 21 in the fixed position, reduces manual intervention. The cooperation between the stop bar 224 and the Y-shaped support rod 4 optimizes the force distribution and enhances the wind resistance and dynamic stability of the overall structure.

[0038] Please refer to Figure 2 Figure 2 , the traction mechanism 3 includes a main lifting rope 31, one end of the main lifting rope 31 is fixed to the winding wheel 54, the other end of the main lifting rope 31 is fixed with two auxiliary lifting ropes 32, the two auxiliary lifting ropes 32 are respectively connected to the connecting rods 216 at the top layer, and pulleys 33 for guiding the two auxiliary lifting ropes 32 are arranged on both sides of the upper tower section 13. By driving the worm 55 through the handle 57 to complete the lifting, no large machinery is required for assistance, reducing the construction cost and the requirements for the working environment. The automatic hook and synchronous lifting mechanism of the suspension assembly 21 greatly shortens the installation time and improves the project efficiency.

[0039] The working principle and usage process of the present invention are as follows: First, fix each ultra-high voltage transmission wire in the clamp 215 at a low position close to the lower tower 11, and then drive the rotation of the worm 55 by rotating the handle 57 on the turntable 56. Driven by the meshing of the worm 55 and the worm wheel 53, the winding wheel 54 on the driven shaft rod 52 rotates, and the main lifting rope 31 is gradually wound by the winding wheel 54. The auxiliary lifting rope 32 pulls the connecting rod 216 under the guidance of the pulley 33, causing the suspension boom 212 to rotate upward and lift. Since the connecting rods 216 of each layer are hinged to each other through the linkage rod 217, the suspension booms 212 of each layer can be synchronously rotated and lifted from a low position to a high position until the hanging ring 214 on the support 213 hooks onto the hook 223 at the end of the support boom 222. At this time, due to the action of gravity, the stop rod 224 of the support member 22 supports on the Y-shaped head of the support rod 4, so that the suspension boom 212 of the suspension assembly 21 is suspended at a fixed height position by the support boom 222 of the support member 22.

[0040] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A composite material ultra-high voltage power tower, comprising a tower body (1) and cantilevers (2) located on both sides of the top of the tower body (1), characterized in that: The cantilever (2) comprises a suspension assembly (21) and a support hanger (22) arranged corresponding to the suspension assembly (21) above and below. The tower body (1) is provided with a lifting mechanism (5) and a traction mechanism (3) for pulling the suspension assembly (21) from a lower position to a higher position under the drive of the lifting mechanism (5). The support hanger (22) can automatically hook the lifted suspension assembly (21). Support rods (4) for supporting and stabilizing the support hanger (22) are fixed on both sides of the top of the tower body (1).

2. The composite material ultra-high voltage power tower according to claim 1, characterized in that: The tower body (1) comprises a lower tower (11), a middle tower (12) and an upper tower (13) which are assembled in sequence from bottom to top, and the lower tower (11), the middle tower (12) and the upper tower (13) are all made of a composite material of carbon fiber or glass fiber reinforced resin.

3. The composite material ultra-high voltage power tower according to claim 2, characterized in that: The lower tower (11) comprises four supporting legs distributed in a rectangular shape, each supporting leg being composed of three supporting foot rods (111) and a plurality of diagonal bracing rods (112) supported between the three supporting foot rods (111), and the four supporting legs gradually close to the bottom of the middle tower (12) from bottom to top.

4. The composite material ultra-high voltage power tower according to claim 2, characterized in that: The middle section tower (12) is in the shape of a quadrangular pyramid frame structure, and is composed of four middle section frame rods (121) and a plurality of middle section cross rods (122) and middle section scissor braces (123) supported between the four middle section frame rods (121). The four middle section frame rods (121) gradually close to the bottom of the upper section tower (13) from bottom to top.

5. The composite material ultra-high voltage power tower according to claim 2, characterized in that: The upper tower (13) is in the shape of a square frame structure, and is composed of four upper frame rods (131) and a plurality of upper cross rods (132) and upper scissor braces (133) supported between the four upper frame rods (131).

6. The composite material ultra-high voltage power tower according to claim 2, characterized in that: The suspension assembly (21) comprises a suspension crossbar (211), the suspension crossbar (211) is hinged to the upper tower (13), both ends of the suspension crossbar (211) are fixed with suspension hangers (212), the outer ends of the two suspension hangers (212) intersect and a support (213) is fixed at the intersection, a suspension ring (214) is fixed above the support (213), and a clamp (215) is fixed below the support (213).

7. The composite material ultra-high voltage power tower according to claim 6, characterized in that: A connecting rod (216) arranged parallel to the suspension crossbar (211) is fixed between the two suspension hangers (212) at the same layer, and the upper and lower connecting rods (216) are hinged to each other via a linkage rod (217).

8. The composite material ultra-high voltage power tower according to claim 7, characterized in that: The support hanger (22) comprises a support cross bar (221), the support cross bar (221) is hinged to the upper tower (13), support suspension rods (222) are fixed at both ends of the support cross bar (221), the outer ends of the two support suspension rods (222) intersect and a hook (223) for hanging a suspension ring (214) is fixed at the intersection, a stop rod (224) arranged parallel to the support cross bar (221) is fixed between the two support suspension rods (222), and the end of the support rod (4) is Y-shaped and can support the stop rod (224).

9. The composite material ultra-high voltage power tower according to claim 8, characterized in that: The lifting mechanism (5) comprises a base (51), wherein the base (51) is fixed on the lower tower (11), wherein a driven shaft (52) is rotatably connected to the inner side of the base (51), a worm wheel (53) and a winding wheel (54) are fixed to the outer side of the driven shaft (52), a worm (55) is meshed below the worm wheel (53), the worm (55) is rotatably connected to the base (51), a turntable (56) is fixed to one end of the worm (55), and a handle (57) is fixed to the surface of the turntable (56).

10. The composite material ultra-high voltage power tower according to claim 9, characterized in that: The traction mechanism (3) comprises a main suspension rope (31), one end of the main suspension rope (31) is fixed to a winding wheel (54), the other end of the main suspension rope (31) is fixed with two auxiliary suspension ropes (32), the two auxiliary suspension ropes (32) are respectively connected to a connecting rod (216) on the top layer, and pulleys (33) for guiding the two auxiliary suspension ropes (32) are arranged on both sides of the upper tower (13).

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