A node connection structure for an electric angle steel tower

Abstract

This application relates to the field of power tower technology, specifically disclosing a node connection structure for a power angle steel tower, including a first angle steel, a second angle steel, and a diagonal brace. The first and second angle steels are fixedly welded together, and connecting plates are provided on the outer surfaces of the first and second angle steels. A first bolt and a first nut are provided on the outer surface of the connecting plates. This invention can provide early warning when the angle steel is offset through the connection components. The early warning function can promptly remind you when the offset occurs, avoiding further expansion of the deviation and causing component cracking and loosening of the connection. Moreover, it can limit the angle steel when offset occurs between them, improving the overall load-bearing capacity and structural stability of the node. This invention can ensure that both ends of the diagonal brace are stably supported through the support components, preventing cracking, deformation, or even damage of the angle steel connectors due to excessive local stress. It can improve construction adaptability. In prefabricated construction, component installation deviations are inevitable, which can extend the service life of the power tower.

Description

Technical Field

[0001] This application relates to the field of power tower technology, and in particular to a node connection structure for a power angle steel tower. Background Technology

[0002] Transmission angle steel towers are the core supporting structure of overhead transmission lines. The nodes, as the force transmission hubs of the main angle steel members, diagonal members, and transverse members, directly determine the overall stability and operational safety of the tower. Currently, angle steel tower nodes mostly adopt an external node plate and bolt connection method, relying on the shear force of the bolts and the bearing pressure of the node plate to transmit force. With the large-scale construction of high-voltage transmission lines, transmission towers face complex field conditions such as strong winds, icing, and alternating temperature differences, significantly increasing the load and alternating stress on the tower body. Current technologies still have the following problems: 1. The existing node connection structure cannot provide early warning of the offset of the angle steel. The offset of the angle steel will cause uneven stress on the weld between the connecting plate and the angle steel, and the local stress will increase sharply, resulting in weld cracking. At the same time, the offset will change the overall force transmission path of the power tower, causing the node to be eccentrically stressed, reducing the overall load-bearing capacity and structural stability of the node.

[0003] 2. In existing node connection structures, the two ends of the diagonal brace are mostly fixed by welding or bolts. Welding is prone to vibration, and bolt fixing makes it impossible to adjust the hole position and deviations during the manufacturing process. This results in uneven stress on both ends of the diagonal brace. Uneven stress causes the diagonal brace to generate eccentric loads, leading to a sudden increase in local stress in the connecting plate, bolts, and welds. When subjected to alternating loads such as wind vibration and icing for a long time, bolts are prone to loosening, weld fatigue cracking, and deformation and tearing of the connecting plate. Under long-term use, this may lead to diagonal brace instability and node failure, reducing the service life of the power tower. Summary of the Invention

[0004] To overcome the inability of node connection structures to provide early warning of angle steel misalignment, which causes uneven stress on the weld between the connecting plate and the angle steel, leading to a sharp increase in local stress and weld cracking, and to address the shortcomings of traditional node connection structures, this invention provides a node connection structure for power angle steel towers to solve these problems. Angle steel misalignment causes uneven stress on the nodes, reducing the overall load-bearing capacity and structural stability. While the ends of the diagonal braces in node connection structures are often fixed by welding or bolts, welding is prone to vibration, and bolt fixing makes it impossible to adjust hole positions or deviations during manufacturing. This uneven stress leads to eccentric loads on the diagonal braces, resulting in a sharp increase in local stress on the connecting plate, bolts, and welds. Under long-term exposure to alternating loads such as wind vibration and icing, this can easily lead to bolt loosening, weld fatigue cracking, and deformation and tearing of the connecting plate.

[0005] This application provides a node connection structure for a power angle steel tower, including a first angle steel, a second angle steel, and a diagonal brace. The first and second angle steels are fixedly welded together. Connecting plates are provided on the outer surfaces of the first and second angle steels. First bolts and first nuts are provided on the outer surfaces of the connecting plates, and the connecting plates are fixedly connected to the first and second angle steels by the first nuts. Connecting components are provided on the outer surfaces of the connecting plates. Supporting components are provided at both ends of the diagonal brace, and the supporting components are respectively located on the outer surfaces of the first and second angle steels. Limiting holes are provided on the outer surfaces of the first and second angle steels. The connecting components include a connecting frame. A limit warning mechanism is provided in the inner cavity of the connecting frame. An adjustment mechanism is provided on the outer surface of the limit warning mechanism. A balancing mechanism is provided on the outer surface of the adjustment mechanism. Limiting blocks are provided at both ends of the balancing mechanism. The limit blocks are respectively fixed to the outer surfaces of the first and second angle steels. The outer surfaces of the connecting frame and the connecting plates are fixedly connected.

[0006] Furthermore, the limit warning mechanism includes a slider, with slide rods fixedly installed at both ends of the slider, and compression rods fixedly installed on the outer surfaces of both ends of the slider. A first button is symmetrically distributed in the middle part of the connecting frame, and a first alarm is fixedly installed on the outer surface of the connecting frame. Inclined blocks are slidably connected to both ends of the connecting frame, and limit rods are fixedly installed on the outer surfaces of the inclined blocks. A first spring is sleeved on the outer surface of the limit rods.

[0007] Furthermore, the slider, slide rod, and extrusion rod are all slidably connected to the connecting frame. The end of the extrusion rod away from the slider is rounded. The slider is located between the two first buttons, and the two ends of the slider near the first buttons are chamfered. The two ends of the first buttons are also chamfered. The first buttons are electrically connected to the first alarm, and pressing the first button controls the first alarm to sound an alarm. The end of the extrusion rod away from the slider is in close contact with the outer surface of the inclined block. The inclined block is in close contact with the inner wall of the top of the connecting frame. The first spring is located between the inner wall of the connecting frame and the inclined block. The limiting rod is slidably connected to the connecting frame and the connecting piece. The limiting rod is flush with the outer surface of the first angle steel and the second angle steel. The limiting rod and the limiting hole are located on the same axis, and the diameter of the limiting hole is larger than that of the limiting rod.

[0008] Furthermore, the adjustment mechanism includes a fixed block, a first threaded rod rotatably connected to the inner cavity of the fixed block, a driving block slidably connected to the outer surface of the fixed block, storage rods fixedly installed at the four corners of the fixed block, an adjusting rod slidably connected to the inner cavity of the storage rod, an adjusting plate fixedly installed at the end of the adjusting rod away from the storage rod, a driving groove opened on the outer surface of the adjusting plate, and a driving rod fixedly installed on the outer surface of the driving block.

[0009] Furthermore, the fixed block and the slider are fixedly connected, the first threaded rod and the drive block are connected by threads, the drive groove and the drive rod are slidably connected, the drive groove is inclined, and the fixed block and the connecting frame are slidably connected.

[0010] Furthermore, the balancing mechanism includes a balancing sleeve, an elastic seat slidably connected to the inner cavity of the balancing sleeve, a second spring sleeved at one end of the elastic seat, a pressure wheel rotatably connected to the end of the elastic seat away from the second spring, a balancing block rotatably connected to the inner cavity of the balancing sleeve, a balancing plate fixedly installed on the outer surface of the balancing block, test blocks fixedly installed at both ends of the adjusting plate, a second button provided on the side of the test block near the balancing plate, the second button fitting against the balancing plate, and a second alarm fixedly installed at both ends of the adjusting plate.

[0011] Furthermore, the middle part of the adjusting plate is fixedly connected to the balance sleeve, the second spring is located between the elastic seat and the inner wall of the balance sleeve, the pressure wheel and the balance block are in close contact, the balance block is symmetrically distributed about the pressure wheel, the balance plate and the adjusting plate are parallel, the balance plate is located between the two limit blocks and fits against the limit blocks, the second button and the second alarm are electrically connected, and pressing the second button controls the second alarm to sound an alarm, the balance plate is parallel to and in close contact with the outer surfaces of the first angle steel and the second angle steel, and the balance block will squeeze the pressure wheel when it rotates.

[0012] Furthermore, the support assembly includes a support plate, which is rotatably connected to a diagonal brace. Second bolts are provided at both ends of the support plate, and a second nut is provided at one end of each second bolt. The second bolts pass through the inner cavities of the first and second angle steels and are threadedly connected to the second nut. Limiting plates are fixedly installed on the outer surfaces of both the first and second angle steels. A second threaded rod is rotatably connected to the inner cavity of the limiting plate, and a movable block is slidably connected to the outer surface of the limiting plate. The second threaded rod and the movable block are threaded together. A positioning groove is provided on the outer surface of the support plate, and a positioning mechanism is provided in the middle of the movable block. The second bolt passes through the movable block, and the second nut is in close contact with the outer surface of the movable block.

[0013] Furthermore, the positioning mechanism includes a positioning block, a positioning rod slidably connected to the inner cavity of the positioning block, a ball valve movably connected to one end of the positioning rod, a fixing ring fixedly installed on the outer surface of the positioning rod, a third spring sleeved on one end of the positioning rod, a third button provided on the inner wall of the positioning block, and a third alarm fixedly installed on the outer surface of the positioning block.

[0014] Furthermore, the middle part of the positioning block and the moving block is fixedly connected, the locking ball engages with the positioning groove, the third spring is located between the inner wall of the fixed ring and the positioning block, the fixed ring and the positioning block are slidably connected, the third button and the third alarm are electrically connected, and the pressing of the third button controls the third alarm to sound an alarm. When the locking ball falls off and engages with the positioning groove and contacts the outer surface of the support plate, the positioning rod presses the third button.

[0015] The technical solution provided in this application has at least the following technical effects or advantages: 1. By employing connecting components, this invention effectively solves the problem that existing node connection structures cannot provide early warnings for angle steel misalignment. Angle steel misalignment causes uneven stress on the weld between the connecting plate and the angle steel, leading to a sharp increase in local stress and weld cracking. Simultaneously, misalignment alters the overall force transmission path of the power tower, causing eccentric stress on the node and reducing the overall load-bearing capacity and structural stability. This invention, through connecting components, provides early warnings for angle steel misalignment. The warning function promptly alerts users to any misalignment, preventing further expansion of the deviation and potential cracking, loosening of connections, or even overall structural instability. Furthermore, it limits the angle steel when misalignment occurs, preventing further deviation and curbing safety accidents at the source. This facilitates timely adjustments and corrections by maintenance personnel, maintaining the rationality of the stress on the node connection and improving the overall load-bearing capacity and structural stability of the node.

[0016] 2. By employing support components, this design effectively solves the problem that existing node connection structures often rely on fixed welding or bolts at both ends of the diagonal brace. Welding is prone to vibration, and bolt fixing makes hole positions and manufacturing deviations unadjustable, resulting in uneven stress on both ends of the diagonal brace. This uneven stress causes eccentric loads on the diagonal brace, leading to a sudden increase in local stress in the connecting plate, bolts, and welds. Under long-term exposure to alternating loads such as wind vibration and icing, bolt loosening, weld fatigue cracking, and connecting plate deformation and tearing are likely to occur. With prolonged use, this may lead to diagonal brace instability and node failure, thus reducing [the structural integrity / reduction of structural integrity]. To extend the service life of power towers, this invention utilizes a support assembly that ensures stable support at both ends of the diagonal brace. The spacing of the connectors can be adjusted based on assembly deviations, resulting in uniform force distribution at both ends of the diagonal brace. This prevents localized stress concentration and avoids cracking, deformation, or even damage to the guide steel connectors due to excessive local stress. It also improves construction adaptability. Since component installation deviations are inevitable in prefabricated construction, this invention reduces on-site modifications and rework, increases construction efficiency, and lowers construction costs. Uniform force distribution reduces fatigue wear on the diagonal brace and connectors, thus extending the service life of the power tower. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure in Embodiment 1 of this application; Figure 2 This is a schematic diagram of the diagonal brace structure in Embodiment 1 of this application; Figure 3 This is a schematic cross-sectional view of the connecting piece in Embodiment 1 of this application; Figure 4 This is a schematic diagram of the connection component structure in Embodiment 1 of this application; Figure 5 This is a schematic cross-sectional view of the connecting frame structure in Embodiment 1 of this application; Figure 6 This is a schematic diagram of the slider structure in Embodiment 1 of this application; Figure 7This is a schematic diagram of the adjustment mechanism structure in Embodiment 1 of this application; Figure 8 This is a schematic cross-sectional view of the balance sleeve structure in Embodiment 1 of this application; Figure 9 This is a schematic diagram of the support plate structure in Embodiment 2 of this application; Figure 10 This is a schematic diagram of the support component structure in Embodiment 2 of this application; Figure 11 This is a schematic diagram of the positioning block structure in Embodiment 2 of this application; Figure 12 This is a schematic diagram of the positioning rod structure in Embodiment 2 of this application.

[0018] In the diagram: 1. First angle steel; 2. Second angle steel; 3. Connecting piece; 4. Connecting assembly; 41. Connecting frame; 42. Limit warning mechanism; 421. Slider; 422. Slide rod; 423. Pressing rod; 424. First button; 425. First alarm; 426. Inclined block; 427. Limiting rod; 428. First spring; 43. Adjusting mechanism; 431. Fixing block; 432. First threaded rod; 433. Driving block; 434. Storage rod; 435. Adjusting rod; 436. Adjusting plate; 437. Driving groove; 438. Driving rod; 44. Balancing mechanism; 441. Balancing sleeve; 442. Spring 443. Force seat; 444. Second spring; 445. Pressure wheel; 446. Balance block; 447. Balance plate; 448. Test block; 449. Second button; 440. Second alarm; 45. Limit block; 5. Support assembly; 51. Support plate; 52. Second bolt; 53. Second nut; 54. Limit plate; 55. Second threaded rod; 56. Moving block; 57. Positioning groove; 58. Positioning mechanism; 581. Positioning block; 582. Positioning rod; 583. Ball catcher; 584. Fixing ring; 585. Third spring; 586. Third button; 587. Third alarm; 6. Diagonal brace; 7. Limiting hole. Detailed Implementation

[0019] For node connection structures that cannot provide early warning of angle steel misalignment, this invention provides early warning of angle steel misalignment through a connecting component. The early warning function can promptly alert when misalignment occurs, preventing further expansion of the deviation and causing component cracking, loosening of connections, or even overall structural instability. For bolt fixation, the hole position and deviations during manufacturing are not adjustable, resulting in uneven force on both ends of the diagonal brace. This invention provides a support component that ensures stable support at both ends of the diagonal brace. The spacing of the connecting parts can be adjusted according to the deviation during assembly, ensuring uniform force on both ends of the diagonal brace.

[0020] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods. Example 1

[0021] Please see Figure 1 and Figure 2 As shown, a node connection structure for a power angle steel tower includes a first angle steel 1, a second angle steel 2, and a diagonal brace 6. The first angle steel 1 and the second angle steel 2 are fixedly welded together. Connecting plates 3 are provided on the outer surfaces of the first angle steel 1 and the second angle steel 2. First bolts and first nuts are provided on the outer surfaces of the connecting plates 3, and the connecting plates 3 are fixedly connected to the first angle steel 1 and the second angle steel 2 by the first nuts. Connecting components 4 are provided on the outer surfaces of the connecting plates 3. Support components 5 are provided at both ends of the diagonal brace 6, and the support components 5 are respectively located on the outer surfaces of the first angle steel 1 and the second angle steel 2. Limiting holes 7 are provided on the outer surfaces of the first angle steel 1 and the second angle steel 2. After the first angle steel 1 and the second angle steel 2 are welded together, the first angle steel 1, the second angle steel 2, and the diagonal brace 6 are the key parts for force transmission in the angle steel tower, and are the most complex parts of the structure under stress and prone to failure. The core area, which is at the highest risk, is prone to component deformation, connection failure, and weld cracking under long-term use. The mechanical performance, disaster resistance, and assembly reliability of the angle steel tower node connection structure are improved by connecting component 4 and support component 5. The first angle steel 1 and the second angle steel 2 are reinforced by connecting piece 3, and the position of the first angle steel 1 and the second angle steel 2 on the connecting piece 3 is monitored by connecting component 4. Support component 5 and diagonal brace 6 are used to support the first angle steel 1 and the second angle steel 2. The support component 5 is adapted to the length of the diagonal brace 6 to make the two ends of the diagonal brace 6 evenly stressed and improve the overall stability. The limiting hole 7 can be inserted with the connecting component 4 when the first angle steel 1 and the second angle steel 2 deviate from the connecting piece 3, so as to quickly intervene and avoid the risk of tower tilting and collapse of the power tower.

[0022] Please see Figure 3 and Figure 4As shown, the connecting assembly 4 includes a connecting frame 41. A limit warning mechanism 42 is provided inside the connecting frame 41. An adjustment mechanism 43 is provided on the outer surface of the limit warning mechanism 42. A balancing mechanism 44 is provided on the outer surface of the adjustment mechanism 43. Limit blocks 45 are provided at both ends of the balancing mechanism 44. The limit blocks 45 are fixed to the outer surfaces of the first angle steel 1 and the second angle steel 2, respectively. The connecting frame 41 and the outer surface of the connecting piece 3 are fixedly connected. When the first angle steel 1 or the second angle steel 2 deviates, it will move on the connecting piece 3. At this time, the first angle steel 1 or the second angle steel 2 drives the limit block 45 to move. The movement of the limit block 45 causes the limit warning mechanism 42 to sound an alarm, facilitating quick maintenance by staff. During assembly, the adjustment mechanism 43 and the balancing mechanism 44 work together to detect whether the connecting piece 3 is parallel to the first angle steel 1 and the second angle steel 2, ensuring close contact between the connecting piece 3 and the first angle steel 1 and the second angle steel 2. When the first angle steel 1 or the second angle steel 2 deforms, it can drive the balancing mechanism 44 to sound an alarm, allowing timely action to be taken.

[0023] Please see Figure 5 and Figure 6As shown, the limit warning mechanism 42 includes a slider 421, with slide rods 422 fixedly installed at both ends of the slider 421. A pressing rod 423 is fixedly installed on the outer surface of both ends of the slider 421. First buttons 424 are symmetrically distributed in the middle of the connecting frame 41. A first alarm 425 is fixedly installed on the outer surface of the connecting frame 41. Inclined blocks 426 are slidably connected to both ends of the connecting frame 41. A limit rod 427 is fixedly installed on the outer surface of the inclined block 426. A first spring 428 is sleeved on the outer surface of the limit rod 427. The slider 421, slide rods 422, and pressing rods 423 are all slidably connected to the connecting frame 41. The end of the pressing rod 423 away from the slider 421 is rounded. The slider 421 is located between the two first buttons 424, and the slider 421 is close to... The first button 424 has chamfered ends. The first button 424 is electrically connected to the first alarm 425, and pressing the first button 424 controls the first alarm 425 to sound an alarm. The end of the pressing rod 423 away from the slider 421 is in close contact with the outer surface of the inclined block 426. The inclined block 426 is in close contact with the inner wall of the top of the connecting frame 41. The first spring 428 is located between the inner wall of the connecting frame 41 and the inclined block 426. The limiting rod 427 is slidably connected to the connecting frame 41 and to the connecting piece 3. The limiting rod 427 is flush with the outer surfaces of the first angle steel 1 and the second angle steel 2. The limiting rod 427 and the limiting hole 7 are located on the same axis, and the distance between the limiting holes 7 is greater than that between the limiting rod 427 and the limiting hole 7. The diameter is such that the movement of the first angle steel 1 or the second angle steel 2 causes the limiting hole 7 to move and prevent them from fitting together. This ensures that when the limiting rod 427 slides within the connecting frame 41, it can be inserted into the limiting hole 7. When the first angle steel 1 or the second angle steel 2 deviates, it causes the limiting block 45 to move relative to the connecting piece 3. At this time, the limiting block 45 presses against the balancing mechanism 44, which in turn causes the adjusting mechanism 43 to move. The movement of the adjusting mechanism 43 causes the slider 421 to slide within the connecting frame 41. Simultaneously, the sliding rod 422 and the pressing rod 423 slide within the connecting frame 41. The sliding rod 422 maintains the stability of the slider 421 during its sliding process. The movement of the slider 421 presses against the first button 424, making... The first alarm 425 sounds an alarm to remind workers that the first angle steel 1 or the second angle steel 2 has shifted relative to the connecting piece 3, requiring maintenance of the power tower. The movement of the compression rod 423 will compress the inclined block 426, causing it to slide within the inner cavity of the connecting frame 41. The sliding of the inclined block 426 will cause the limiting rod 427 to slide and compress the first spring 428. The sliding of the limiting rod 427 will engage with the limiting hole 7. At this time, the first angle steel 1 or the second angle steel 2 is once again in a locked and fixed state relative to the connecting piece 3, thus preventing further expansion of the deviation and causing component cracking, loosening of connections, or even instability of the overall structure. Furthermore, it limits the angle steel when it shifts, preventing the shift from increasing and curbing safety accidents at the source.This facilitates timely adjustments and corrections by maintenance personnel, maintains the rationality of stress distribution on node connections, and improves the overall load-bearing capacity and structural stability of the nodes.

[0024] Please see Figure 6 , Figure 7 and Figure 8As shown, the adjustment mechanism 43 includes a fixed block 431, a first threaded rod 432 rotatably connected to the inner cavity of the fixed block 431, a driving block 433 slidably connected to the outer surface of the fixed block 431, a storage rod 434 fixedly installed at the four corners of the fixed block 431, an adjusting rod 435 slidably connected to the inner cavity of the storage rod 434, an adjusting plate 436 fixedly installed at the end of the adjusting rod 435 away from the storage rod 434, a driving groove 437 formed on the outer surface of the adjusting plate 436, a driving rod 438 fixedly installed on the outer surface of the driving block 433, a fixed block 431 and a slider 421 fixedly connected, a first threaded rod 432 and a driving block 433 connected by threads, a driving groove 437 and a driving rod 438 slidably connected, and the driving groove 437 is inclined. Block 431 and connecting frame 41 are slidably connected. The balancing mechanism 44 includes a balancing sleeve 441. An elastic seat 442 is slidably connected to the inner cavity of the balancing sleeve 441. A second spring 443 is sleeved on one end of the elastic seat 442. A pressure wheel 444 is rotatably connected to the end of the elastic seat 442 away from the second spring 443. A balancing block 445 is rotatably connected to the inner cavity of the balancing sleeve 441. A balancing plate 446 is fixedly installed on the outer surface of the balancing block 445. Test blocks 447 are fixedly installed at both ends of the adjusting plate 436. A second button 448 is provided on the side of the test block 447 near the balancing plate 446. The second button 448 is in contact with the balancing plate 446. A second alarm 449 is fixedly installed at both ends of the adjusting plate 436. The middle part of the adjusting plate 436 and the balancing sleeve 441 are connected. 1. Fixed connection: The second spring 443 is located between the inner wall of the elastic seat 442 and the balance sleeve 441. The pressure wheel 444 and the balance block 445 are in close contact. The balance block 445 is symmetrically distributed about the pressure wheel 444. The balance plate 446 and the adjusting plate 436 are parallel. The balance plate 446 is located between the two limit blocks 45 and is in contact with the limit blocks 45. The second button 448 and the second alarm 449 are electrically connected. Pressing the second button 448 controls the second alarm 449 to sound an alarm. The balance plate 446 is parallel to and in close contact with the outer surfaces of the first angle steel 1 and the second angle steel 2. When the balance block 445 rotates, it will squeeze the pressure wheel 444. When the connecting piece 3 is fixed to the outer surfaces of the first angle steel 1 and the second angle steel 2, the balancing mechanism 44 can... This is used to detect whether the connecting piece 3 is parallel and in close contact with the first angle steel 1 and the second angle steel 2. By rotating the first threaded rod 432, the driving block 433 slides on the fixed block 431. At this time, the driving rod 438 slides in the inner cavity of the driving groove 437, and drives the adjusting rod 435 to slide in the inner cavity of the receiving rod 434, so that the distance between the adjusting plate 436 and the fixed block 431 changes. The adjustment of the distance of the adjusting plate 436 makes the balance plate 446 in close contact with the outer surface of the first angle steel 1 or the second angle steel 2. At this time, the balance plate 446 is kept between the two limit blocks 45. This is used to monitor and issue an alarm when the connecting piece 3 deviates from the first angle steel 1 and the second angle steel 2. At the same time, when the first angle steel 1 or the second angle steel 2 deforms and protrudes during use, it is also used to detect when the first angle steel 1 or the second angle steel 2 deviates from the first angle steel 1 or the second angle steel 2.This will compress the balance plate 446, causing uneven force on the balance plate 446 and causing its angle to deflect. At this time, the balance plate 446 and the first angle steel 1 or connecting piece 3 will tilt at an angle, causing the balance block 445 to rotate inside the balance sleeve 441. The rotation of the balance block 445 will compress the pressure roller 444. The compression of the pressure roller 444 will cause the elastic seat 442 to slide inside the balance sleeve 441 and compress the second spring 443. The elastic force of the second spring 443 is used to keep the balance block 445 balanced. The rotation of the balance plate 446 will cause the balance plate 446 to rotate. Pressing the second button 448 on the test block 447 triggers the second alarm 449, which, in conjunction with the limit warning mechanism 42, provides early warning when structural changes occur between the first angle steel 1 and the second angle steel 2 and the connecting piece 3. For example, if cracks develop in the fixedly welded first angle steel 1 and the second angle steel 2 after prolonged use, or if the first angle steel 1 and the second angle steel 2 shift or deform relative to the connecting piece 3, causing pressure, these changes can alert personnel to perform rapid maintenance, preventing further expansion that could lead to component cracking or loosening of connections, thus improving the overall structural stability. Example 2

[0025] Please see Figure 2 , Figure 9 and Figure 10As shown, the support assembly 5 includes a support plate 51, which is rotatably connected to the diagonal brace 6. Second bolts 52 are provided at both ends of the support plate 51, and a second nut 53 is provided at one end of each second bolt 52. The second bolts 52 pass through the inner cavities of the first angle steel 1 and the second angle steel 2 and are threadedly connected to the second nut 53. Limiting plates 54 are fixedly installed on the outer surfaces of both the first angle steel 1 and the second angle steel 2. A second threaded rod 55 is rotatably connected to the inner cavity of the limiting plate 54, and a moving block 56 is slidably connected to the outer surface of the limiting plate 54. The second threaded rod 55 and the moving block 56 are threadedly connected. A positioning groove 57 is provided on the outer surface of the support plate 51, and a positioning mechanism 58 is provided in the middle of the moving block 56. The second bolts 52 pass through the moving block 56, and the second nut 53 is in close contact with the outer surface of the moving block 56, tightly fitting the support plate 51 at one end of the diagonal brace 6 to the outer surface of the first angle steel 1. Then, through the second bolt... Two bolts 52 and a second nut 53 fix the support plate 51 to the moving block 56, so that the positioning groove 57 and the positioning mechanism 58 are engaged. The second threaded rod 55 is used to adjust the position of the moving block 56 on the limiting plate 54, keeping the outer surfaces of the support plate 51 and the second angle steel 2 at the other end of the diagonal brace 6 in close contact. When the second bolt 52 and the second nut 53 limit the support plate 51, first rotate the second threaded rod 55 to make the two ends of the moving block 56 engage with the second bolt 52, and then fix it with the second bolt 52 and the second nut 53, so that the two support plates 51 can keep in close contact with the outer surfaces of the first angle steel 1 and the second angle steel 2. This can make the two ends of the diagonal brace 6 bear force evenly, avoid local stress concentration of the diagonal brace, and prevent the angle steel connector from cracking, deforming or even being damaged due to excessive local stress. This can improve the construction adaptability, as there are inevitably component installation deviations in prefabricated construction.

[0026] Please see Figure 11 and Figure 12As shown, the positioning mechanism 58 includes a positioning block 581. A positioning rod 582 is slidably connected to the inner cavity of the positioning block 581. A retaining ball 583 is movably connected to one end of the positioning rod 582. A retaining ring 584 is fixedly installed on the outer surface of the positioning rod 582. A third spring 585 is sleeved on one end of the positioning rod 582. A third button 586 is provided on the inner wall of the positioning block 581. A third alarm 587 is fixedly installed on the outer surface of the positioning block 581. The third alarm 587, the first alarm 425, and the second alarm 449 have different sound settings to facilitate problem differentiation and maintenance. The middle part of the positioning block 581 and the moving block 56 are fixedly connected. The ball 583 engages with the positioning groove 57. The third spring 585 is located between the inner walls of the fixing ring 584 and the positioning block 581. The fixing ring 584 and the positioning block 581 are slidably connected. The third button 586 is electrically connected to the third alarm 587, and pressing the third button 586 controls the third alarm 587 to sound an alarm. When the ball 583 falls off and engages with the positioning groove 57 and contacts the outer surface of the support plate 51, the positioning rod 582 presses the third button 586. The positioning mechanism 58 is used to determine whether the positions of the second bolt 52 and the moving block 56 are relatively aligned during assembly. When the second bolt 52 just engages with the moving block 56, the ball 583 engages with the positioning groove 57. Ball 583 engages with positioning groove 57, enabling positioning when adjusting the position of moving block 56. This ensures stability when support plate 51 contacts the first angle steel 1 and the second angle steel 2. Simultaneously, when support plate 51 shifts relative to the first angle steel 1 or the second angle steel 2 (i.e., relative to moving block 56), relative displacement occurs between support plate 51 and positioning mechanism 58. At this point, ball 583 disengages from positioning groove 57, causing pressure between the outer surface of support plate 51 and ball 583. This causes positioning rod 582 to slide within the cavity of positioning block 581. The sliding of positioning rod 582 drives fixing ring 584 to slide within the cavity of positioning block 581. The third spring 585 is compressed, and the sliding of the positioning rod 582 compresses the third button 586, causing the third alarm 587 to sound an alarm, reminding the staff that the support plates 51 at both ends of the diagonal brace 6 have shifted on the first angle steel 1 or the second angle steel 2 and need to be adjusted to ensure that both ends of the diagonal brace 6 are stably supported. The spacing of the connecting parts can be adjusted according to the deviation during assembly, which can improve the adaptability of construction. In prefabricated construction, there are bound to be component installation deviations. This reduces on-site chisel modifications and rework, improves construction efficiency, and reduces construction costs. Uniform force distribution can reduce fatigue wear of the diagonal brace and connecting parts, and can extend the service life of the power tower.

[0027] In summary, the mechanical properties, disaster resistance, and assembly reliability of the angle steel tower node connection structure are improved by using connecting component 4 and support component 5. The first angle steel 1 and the second angle steel 2 are reinforced by connecting piece 3, and the positions of the first angle steel 1 and the second angle steel 2 on the connecting piece 3 are monitored by connecting component 4. Support component 5 and diagonal brace 6 are used to support the first angle steel 1 and the second angle steel 2. Support component 5 is adapted to the length of diagonal brace 6 to ensure uniform force distribution at both ends of diagonal brace 6, improving overall stability. Limiting holes 7 can be used to support the first angle steel 1 and the second angle steel 2. When angle steel 2 shifts relative to connecting piece 3, it engages with connecting assembly 4 for rapid intervention, preventing the risk of tower tilting or collapse. When the first angle steel 1 or the second angle steel 2 shifts, it will move on connecting piece 3. At this time, the first angle steel 1 or the second angle steel 2 drives the limit block 45 to move. The movement of the limit block 45 triggers the limit warning mechanism 42 to sound an alarm, facilitating rapid maintenance by staff. During assembly, the adjusting mechanism 43 and the balancing mechanism 44 work together to detect whether connecting piece 3 remains parallel to the first angle steel 1 and the second angle steel 2, ensuring that connecting piece 3... The first angle steel 1 and the second angle steel 2 are in close contact. When the first angle steel 1 or the second angle steel 2 deforms, it can drive the balancing mechanism 44 to issue an alarm, thereby taking timely measures to ensure that the support plate 51 at one end of the diagonal brace 6 is tightly fitted to the outer surface of the first angle steel 1. Then, the support plate 51 is fixedly connected to the moving block 56 by the second bolt 52 and the second nut 53, so that the positioning groove 57 and the positioning mechanism 58 are engaged. The second threaded rod 55 is used to adjust the position of the moving block 56 on the limiting plate 54, keeping the support plate 51 and the outer surface of the second angle steel 2 at the other end of the diagonal brace 6 in contact. When the second bolt 52 and the second nut 53 limit the support plate 51, the second threaded rod 55 is rotated first to make the two ends of the moving block 56 and the second bolt 52 fit together. Then, the second bolt 52 and the second nut 53 are used to fix it, so that the two support plates 51 can maintain close contact with the outer surfaces of the first angle steel 1 and the second angle steel 2. This can make the two ends of the diagonal brace 6 evenly stressed, avoid local stress concentration of the diagonal brace, and prevent the angle steel connector from cracking, deforming or even being damaged due to excessive local stress. This can improve the adaptability of construction. In prefabricated construction, there are bound to be component installation deviations.

[0028] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0029] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present application, based on the technical solution and concept of the present application, should be covered within the scope of protection of the present application.

Claims

1. A node connection structure for an electric power angle steel tower, comprising a first angle steel (1), a second angle steel (2), and diagonal bracing (6), wherein the first angle steel (1) and the second angle steel (2) are fixedly welded, characterized in that, The outer surfaces of the first angle steel (1) and the second angle steel (2) are provided with connecting pieces (3), the outer surfaces of the connecting pieces (3) are provided with first bolts and first nuts, and the connecting pieces (3) are fixedly connected to the first angle steel (1) and the second angle steel (2) by the first nuts. The outer surfaces of the connecting pieces (3) are provided with connecting components (4), and the two ends of the diagonal brace (6) are provided with support components (5), and the support components (5) are respectively located on the outer surfaces of the first angle steel (1) and the second angle steel (2). Limiting holes (7) are opened on the outer surfaces of the first angle steel (1) and the second angle steel (2). The connecting assembly (4) includes a connecting frame (41), the inner cavity of the connecting frame (41) is provided with a limit warning mechanism (42), the outer surface of the limit warning mechanism (42) is provided with an adjustment mechanism (43), the outer surface of the adjustment mechanism (43) is provided with a balancing mechanism (44), both ends of the balancing mechanism (44) are provided with limit blocks (45), the limit blocks (45) are respectively fixed to the outer surfaces of the first angle steel (1) and the second angle steel (2), and the outer surfaces of the connecting frame (41) and the connecting piece (3) are fixedly connected.

2. The node connection structure of a power angle steel tower as described in claim 1, characterized in that, The limit warning mechanism (42) includes a slider (421), with slide rods (422) fixedly installed at both ends of the slider (421), and pressing rods (423) fixedly installed on the outer surfaces of both ends of the slider (421). A first button (424) is symmetrically distributed in the middle part of the connecting frame (41), and a first alarm (425) is fixedly installed on the outer surface of the connecting frame (41). An inclined block (426) is slidably connected to both ends of the connecting frame (41), and a limit rod (427) is fixedly installed on the outer surface of the inclined block (426). A first spring (428) is sleeved on the outer surface of the limit rod (427).

3. The node connection structure of a power angle steel tower as described in claim 2, characterized in that, The slider (421), slide rod (422), and pressing rod (423) are all slidably connected to the connecting frame (41). The end of the pressing rod (423) away from the slider (421) is rounded. The slider (421) is located between two first buttons (424), and the two ends of the slider (421) near the first buttons (424) are chamfered. The two ends of the first buttons (424) are also chamfered. The first buttons (424) are electrically connected to the first alarm (425), and pressing the first button (424) controls the first alarm (425) to sound an alarm. The pressing rod (423) is located away from the slider (421). 1) One end is in close contact with the outer surface of the inclined block (426), the inclined block (426) is in close contact with the inner wall of the top of the connecting frame (41), the first spring (428) is located between the inner wall of the connecting frame (41) and the inclined block (426), the limiting rod (427) is slidably connected to the connecting frame (41), the limiting rod (427) is slidably connected to the connecting piece (3), the limiting rod (427) is flush with the outer surface of the first angle steel (1) and the second angle steel (2), the limiting rod (427) and the limiting hole (7) are located on the same axis, and the diameter of the limiting hole (7) is greater than the diameter of the limiting rod (427).

4. The node connection structure of a power angle steel tower as described in claim 2, characterized in that, The adjustment mechanism (43) includes a fixed block (431), a first threaded rod (432) is rotatably connected to the inner cavity of the fixed block (431), a driving block (433) is slidably connected to the outer surface of the fixed block (431), a storage rod (434) is fixedly installed at the four corners of the fixed block (431), an adjusting rod (435) is slidably connected to the inner cavity of the storage rod (434), an adjusting plate (436) is fixedly installed at the end of the adjusting rod (435) away from the storage rod (434), a driving groove (437) is opened on the outer surface of the adjusting plate (436), and a driving rod (438) is fixedly installed on the outer surface of the driving block (433).

5. The node connection structure of a power angle steel tower as described in claim 4, characterized in that, The fixed block (431) and the slider (421) are fixedly connected, the first threaded rod (432) and the drive block (433) are connected by threads, the drive groove (437) and the drive rod (438) are slidably connected, the drive groove (437) is inclined, and the fixed block (431) and the connecting frame (41) are slidably connected.

6. The node connection structure of a power angle steel tower as described in claim 5, characterized in that, The balancing mechanism (44) includes a balancing sleeve (441), an elastic seat (442) is slidably connected to the inner cavity of the balancing sleeve (441), a second spring (443) is sleeved on one end of the elastic seat (442), a pressure wheel (444) is rotatably connected to the end of the elastic seat (442) away from the second spring (443), a balancing block (445) is rotatably connected to the inner cavity of the balancing sleeve (441), a balancing plate (446) is fixedly installed on the outer surface of the balancing block (445), test blocks (447) are fixedly installed at both ends of the adjusting plate (436), a second button (448) is provided on the side of the test block (447) close to the balancing plate (446), the second button (448) is in contact with the balancing plate (446), and a second alarm (449) is fixedly installed at both ends of the adjusting plate (436).

7. The node connection structure of a power angle steel tower as described in claim 6, characterized in that, The middle part of the adjusting plate (436) is fixedly connected to the balance sleeve (441). The second spring (443) is located between the elastic seat (442) and the inner wall of the balance sleeve (441). The pressure wheel (444) and the balance block (445) are in close contact. The balance block (445) is symmetrically distributed about the pressure wheel (444). The balance plate (446) is parallel to the adjusting plate (436). The balance plate (446) is located between the two limit blocks (45) and fits against the limit blocks (45). The second button (448) is electrically connected to the second alarm (449). Pressing the second button (448) controls the second alarm (449) to sound an alarm. The balance plate (446) is parallel to and in close contact with the outer surfaces of the first angle steel (1) and the second angle steel (2). When the balance block (445) rotates, it will squeeze the pressure wheel (444).

8. The node connection structure of a power angle steel tower as described in claim 1, characterized in that, The support assembly (5) includes a support plate (51), which is rotatably connected to the diagonal brace (6). The two ends of the support plate (51) are provided with second bolts (52), and one end of the second bolts (52) is provided with a second nut (53). The second bolts (52) pass through the inner cavities of the first angle steel (1) and the second angle steel (2) and are threadedly connected to the second nut (53). The outer surfaces of the first angle steel (1) and the second angle steel (2) are fixedly installed with limit plates (54). The inner cavity of the limit plate (54) is rotatably connected with a second threaded rod (55). The outer surface of the limit plate (54) is slidably connected with a moving block (56). The second threaded rod (55) and the moving block (56) are connected by threads. The outer surface of the support plate (51) is provided with a positioning groove (57). The middle part of the moving block (56) is provided with a positioning mechanism (58). The second bolts (52) pass through the moving block (56). The second nut (53) and the outer surface of the moving block (56) are in close contact.

9. The node connection structure of a power angle steel tower as described in claim 8, characterized in that, The positioning mechanism (58) includes a positioning block (581), a positioning rod (582) is slidably connected to the inner cavity of the positioning block (581), a ball (583) is movably connected to one end of the positioning rod (582), a fixing ring (584) is fixedly installed on the outer surface of the positioning rod (582), a third spring (585) is sleeved on one end of the positioning rod (582), a third button (586) is provided on the inner wall of the positioning block (581), and a third alarm (587) is fixedly installed on the outer surface of the positioning block (581).

10. The node connection structure of a power angle steel tower as described in claim 9, characterized in that, The positioning block (581) and the moving block (56) are fixedly connected in the middle. The locking ball (583) engages with the positioning groove (57). The third spring (585) is located between the fixing ring (584) and the inner wall of the positioning block (581). The fixing ring (584) and the positioning block (581) are slidably connected. The third button (586) and the third alarm (587) are electrically connected. Pressing the third button (586) controls the third alarm (587) to sound an alarm. When the locking ball (583) falls off and engages with the positioning groove (57) and contacts the outer surface of the support plate (51), the positioning rod (582) presses the third button (586).

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