A connecting joint of a variable angle steel of a steel pipe in a steel pipe tower of a power transmission line

Abstract

The present application relates to the technical field of power transmission tower, and discloses a connecting joint of a steel pipe angle steel in a steel pipe tower of a power transmission line, two groups of the symmetrical clamping ends of the symmetrical clamping seats are provided with tight clamping plates, and the two sides of the two groups of symmetrical clamping seats are symmetrically provided with two groups of positioning bases, the inner sides of the two groups of positioning bases are symmetrically provided with two groups of direction adjusting guide rods, the end faces of the two groups of direction adjusting guide rods are symmetrically provided with direction adjusting holes, and the outer sides of the two groups of direction adjusting guide rods are provided with connecting seat assemblies. The present application replaces the welding connection form of the traditional cylindrical steel pipe main material and the angle steel auxiliary material, through the clamping of the two groups of symmetrical clamping seats, under the matching combination of the direction adjusting guide rods and the connecting seat assemblies, on the one hand, the present application has good uniform stress performance, so that the pressure of the high-voltage line is transmitted to the connecting joint through the angle steel auxiliary material, and then is uniformly transmitted to the cylindrical steel pipe main material through the connecting joint, thereby improving the stress stability of the steel pipe tower.

Description

Technical Field

[0001] This invention relates to the field of power transmission tower technology, specifically a connecting joint for steel pipes to angle steel in power transmission line steel pipe towers. Background Technology

[0002] Transmission towers are tall structures, highly sensitive to tilting deformation and requiring strict control over uneven ground settlement. The main structural form of transmission towers is steel. For a long time, Q235 and Q345 hot-rolled angle steel has been the primary materials used for transmission line towers in my country. However, with the rapid development of large-capacity, high-voltage transmission lines, multi-circuit lines on the same tower and even higher voltage levels such as AC 750kV, 1000kV, and DC ±800kV transmission lines have emerged. In practical applications, a mixture of angle steel and steel pipes is commonly used. Often, the main material is entirely steel pipe, while angle steel is sometimes used for diagonal or auxiliary materials. Steel pipe towers, as a type of tower, mostly use cylindrical steel pipes as their main material, while angle steel supports are commonly used for auxiliary materials supporting high-voltage lines. The connection between the main and auxiliary materials is usually vertical welding, where the auxiliary materials are vertically welded to the main material to support the high-voltage line.

[0003] However, existing welded connections between the main cylindrical steel pipe and the auxiliary angle steel have the characteristic of uneven stress distribution. This welded connection lacks directional adjustment capabilities, making it inconvenient for guiding high-voltage lines. Furthermore, the stress point is relatively singular, resulting in poor stress and pressure stability of the main cylindrical steel pipe. Therefore, those skilled in the art have provided a connection joint for steel pipes to angle steel in transmission line steel pipe towers to solve the problems mentioned in the background art. Summary of the Invention

[0004] The purpose of this invention is to provide a connecting joint for steel pipes to angle steel in steel pipe towers of transmission lines, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a connecting joint for steel pipe to angle steel in a transmission line steel pipe tower, comprising two sets of mating clamps, wherein the mating ends of the two sets of mating clamps are symmetrically provided with clamping plates, and two sets of positioning bases are symmetrically provided on both sides of the two sets of mating clamps, and two sets of adjusting guide rods are symmetrically provided on the inner side of the two sets of positioning bases, wherein the end faces of the two sets of adjusting guide rods are symmetrically provided with adjusting openings, and a connecting seat assembly is sleeved on the outer side of the two sets of adjusting guide rods.

[0006] As a further embodiment of the present invention: the upper and lower ports of the two sets of mating clamps are both semi-circular structures, and the two sets of mating clamps constitute a frustum cylinder.

[0007] As a further aspect of the present invention: the inner walls of both sets of mating clamps are provided with anti-slip pads, the anti-slip pads are made of one of NBR, HNBR or natural rubber, and the inner walls of the anti-slip pads have a polygonal prismatic structure.

[0008] As a further embodiment of the present invention: the two sets of guiding rods form a ring structure.

[0009] As a further aspect of the present invention: the number of the directional openings is not less than twenty sets, and the directional openings are arranged in a ring-shaped symmetrical arrangement with respect to the center of the directional guide rod.

[0010] As a further embodiment of the present invention: the connecting seat assembly includes a boom plate frame, on one side of the boom plate frame, two sets of pressure-bearing supports are symmetrically arranged at the upper and lower ends, and on the other side of the boom plate frame, two sets of guide slides are symmetrically arranged at the middle position. The inner side of the guide slide is provided with a guide groove adapted to the adjusting guide rod, and the middle of the guide slide is provided with a locking hole adapted to the adjusting opening on the end face of the boom plate frame. The output end of the pressure-bearing support is symmetrically connected to a boom connecting rod, and the output end of the boom connecting rod is provided with a guide support. The inner side of the guide support is provided with a lifting guide rod and a compression guide rod from left to right. The upper and lower ends of the compression guide rod are symmetrically fitted with compression springs, and the outer sides of the compression guide rod and the lifting guide rod are both fitted with guide bushings. The output end of the guide bushing is symmetrically provided with an angle steel connecting seat.

[0011] As a further aspect of the present invention: the locking opening and the adjusting opening have the same port size, and the locking opening and the adjusting opening correspond one-to-one with each other, and the inner side of the locking opening and the adjusting opening is provided with a fastening pin.

[0012] As a further embodiment of the present invention: the guide bushing is elastically engaged with the lifting guide rod and the compression guide rod respectively by compression springs.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This invention replaces the traditional method of welding the main cylindrical steel pipe with angle steel auxiliary materials. Through the clamping of two sets of mating clamps, and with the matching combination of the guide rod and the connecting seat assembly, it has good uniform force distribution performance. This allows the pressure of the high-voltage line to be transmitted to the connecting joint through the angle steel auxiliary material, and then evenly transmitted to the main cylindrical steel pipe through the connecting joint, thereby improving the stress stability of the steel pipe tower. On the other hand, it allows for flexible adjustment of the horizontal installation angle of the angle steel auxiliary material, facilitating multi-directional traction and guidance of the high-voltage circuit. Furthermore, it has convenient on-site assembly performance during assembly and use, reducing the assembly intensity for workers and improving assembly efficiency. Attached Figure Description

[0015] Figure 1 A schematic diagram of a connecting joint for steel pipes with angle steel in a transmission line steel pipe tower;

[0016] Figure 2 This is a schematic diagram of the adjusting guide rod in a connecting joint for steel pipes and angle steel in a transmission line steel pipe tower.

[0017] Figure 3 This is a schematic diagram of the mating clamp in a connecting joint for steel pipes and angle steel in a transmission line steel pipe tower.

[0018] Figure 4 This is a schematic diagram of the connecting seat assembly in a connecting joint for steel pipes changing angle steel in a transmission line steel pipe tower.

[0019] Figure 5 A type of connector for steel pipes changing angle steel in steel pipe towers of transmission lines. Figure 4 A schematic diagram of the structure of the guide slide.

[0020] In the diagram: 1. Clamping seat; 2. Pressing clamp; 3. Positioning base; 4. Adjusting guide rod; 5. Adjusting opening; 6. Connecting seat assembly; 61. Arm force plate frame; 62. Pressure bearing support; 63. Guide slide; 64. Guide through groove; 65. Locking opening; 66. Arm force connecting rod; 67. Guide support; 68. Lifting guide rod; 69. Compression guide rod; 610. Compression spring; 611. Guide bushing; 612. Angle steel connecting seat; 7. Anti-slip pad. Detailed Implementation

[0021] Please see Figures 1-5 In this embodiment of the invention, a connecting joint for steel pipes changing angle steel in a transmission line steel pipe tower includes two sets of mating clamps 1. The mating ends of the two sets of mating clamps 1 are symmetrically provided with clamping plates 2. The upper and lower ends of the two sets of mating clamps 1 are both semi-circular structures, and the two sets of mating clamps 1 form a frustum cylinder. The inner walls of both sets of mating clamps 1 are provided with anti-slip pads 7. The anti-slip pads 7 are made of one of NBR, HNBR, or natural rubber, and the inner walls of the anti-slip pads 7 have a polygonal prismatic structure. This design is used for connecting the joint... During the assembly process, after the main cylindrical steel pipe of the steel pipe tower is installed, the workers and connecting joints are lifted to the top of the main steel pipe using hoisting equipment. Then, the workers clamp the two sets of mating clamps 1 to the top of the main steel pipe. After clamping, the matching fastening bolts are used to tighten and position them, assembling and fixing them to the top of the main steel pipe. During the tightening process, the anti-slip pad 7 on its inner wall has good deformation and elasticity, which can make the mating clamp 1 fit more closely and stably with the main steel pipe.

[0022] Two sets of positioning bases 3 are symmetrically arranged on both sides of the two sets of clamping seats 1. Two sets of adjusting guide rods 4 are symmetrically arranged on the inner side of the two sets of positioning bases 3. The end faces of the two sets of adjusting guide rods 4 are symmetrically opened with adjusting openings 5. The two sets of adjusting guide rods 4 form a ring structure. There are no fewer than twenty sets of adjusting openings 5, and the adjusting openings 5 ​​are arranged symmetrically in a ring with respect to the center of the adjusting guide rods 4. The locking openings 65 and adjusting openings 5 ​​have the same port size, and the locking openings 65 and adjusting openings 5 ​​correspond one-to-one. The inner side of the locking openings 65 and adjusting openings 5 ​​are equipped with fastening pins. After clamping the clamping seats 1 onto the main steel pipe, the workers push the guide slide 63 to rotate horizontally on the adjusting guide rods 4 according to the routing direction of the high-voltage line, adjusting and guiding the horizontal support angle of the connecting seat assembly 6, so that the matching angle steel auxiliary material can perform reasonable traction and guidance work for the high-voltage circuit. After adjustment, the matching fastening pin is inserted through the locking hole 65 and the directional opening 5 to fix the connecting seat assembly 6 onto the directional guide rod 4. Then, after the connecting joint is assembled, the workers assemble the matching angle steel auxiliary material onto the angle steel connecting seat 612 in the connecting seat assembly 6. By assembling insulating columns and other components on the angle steel auxiliary material, the high-voltage circuit is traction-guided and supported. Through the clamping of two sets of mating clamps 1, under the matching combination of the directional guide rod 4 and the connecting seat assembly 6, it has good uniform force performance, so that the pressure of the high-voltage line is transmitted to the connecting joint through the angle steel auxiliary material, and then evenly transmitted to the cylindrical steel pipe main material through the connecting joint, improving the stress stability of the steel pipe tower. On the other hand, it can flexibly adjust the horizontal installation angle of the angle steel auxiliary material to facilitate multi-directional traction and guidance of the high-voltage circuit.

[0023] Two sets of adjusting guide rods 4 are fitted with connecting seat assemblies 6 on their outer sides. The connecting seat assembly 6 includes a boom plate frame 61. Two sets of pressure-bearing supports 62 are symmetrically arranged at the upper and lower ends on one side of the boom plate frame 61, and two sets of guide slides 63 are symmetrically arranged at the middle position on the other side of the boom plate frame 61. A guide groove 64 adapted to the adjusting guide rod 4 is opened through the inner side of the guide slide 63, and the middle of the guide slide 63 passes through the end face of the boom plate frame 61. A locking opening 65 is provided to match the adjusting opening 5. A lever connecting rod 66 is symmetrically connected to the output end of the pressure bearing support 62. A guide support 67 is provided at the output end of the lever connecting rod 66. A lifting guide rod 68 and a compression guide rod 69 are arranged sequentially from left to right on the inner side of the guide support 67. Compression springs 610 are symmetrically sleeved at the upper and lower ends of the compression guide rod 69. Guide bushings 611 are sleeved on the outer sides of both the compression guide rod 69 and the lifting guide rod 68. Angle steel connecting seats 612 are symmetrically arranged at the output end of 1. The guide sleeve 611 is elastically engaged with the lifting guide rod 68 and the compression guide rod 69 respectively through the compression spring 610. During the process of connecting and supporting the angle steel auxiliary material using the connecting joint, the combination of the guide sleeve 611 and the compression spring 610 has good elastic contraction performance, which allows the guide sleeve 611 to elastically slide on the lifting guide rod 68 and the compression guide rod 69. When external pressure or tension is applied to the high-voltage circuit, the pressure generated is transmitted to the angle steel connecting seat 612 through the angle steel auxiliary material, and then to the guide sleeve 611. Through the elastic displacement of the guide sleeve 611, the pressure impact generated by the high-voltage circuit is reduced, and the high-voltage circuit is elastically protected. When the high-voltage circuit experiences thermal expansion and contraction due to seasonal reasons, the elastic displacement of the guide sleeve 611 can also provide deformation space for the high-voltage circuit to reduce the tension of the high-voltage circuit deformation.

[0024] The working principle of this invention is as follows: When assembling the connecting joint, after the main cylindrical steel pipe of the steel pipe tower is installed, a lifting device is used to lift the workers and the connecting joint to the top of the main steel pipe. Then, the workers clamp the two sets of mating clamps 1 to the top of the main steel pipe. After clamping, the matching fastening bolts are tightened to position and fix it to the top of the main steel pipe. After clamping the mating clamps 1 to the main steel pipe, the workers push the guide slide 63 to rotate horizontally on the adjusting guide rod 4 according to the routing direction of the high-voltage line, adjusting the horizontal support angle of the connecting seat assembly 6 so that the matching angle steel auxiliary material can reasonably guide the high-voltage circuit. After adjustment, the matching fastening pin is inserted through the locking hole 65 and the adjusting hole 5 to fix the connecting seat assembly 6 to the adjusting guide rod 4. After the connecting joint is assembled, the workers then... The angle steel auxiliary material is assembled on the angle steel connecting seat 612 in the connecting seat assembly 6. By assembling insulating columns and other components on the angle steel auxiliary material, the high-voltage circuit is traction-guided and supported. Furthermore, during the connection and support of the angle steel auxiliary material using the connecting joint, the combination of the guide sleeve 611 and the compression spring 610 has good elastic contraction performance, which allows the guide sleeve 611 to slide elastically on the lifting guide rod 68 and the compression guide rod 69. When external pressure or tension is applied to the high-voltage circuit, the pressure generated is transmitted through the angle steel auxiliary material to the angle steel connecting seat 612, and then to the guide sleeve 611. Through the elastic displacement of the guide sleeve 611, the pressure impact generated by the high-voltage circuit is reduced, and the high-voltage circuit is elastically protected. Moreover, when the high-voltage circuit experiences thermal expansion and contraction due to seasonal reasons, the elastic displacement of the guide sleeve 611 can also provide deformation space for the high-voltage circuit to reduce the tension of the high-voltage circuit deformation.

[0025] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention 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 invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A connecting joint for steel pipes changing angle steel in transmission line steel pipe towers, comprising two sets of mating clamps (1), characterized in that, Two sets of mating clamps (1) are symmetrically provided with clamping plates (2) at their mating ends, and two sets of positioning bases (3) are symmetrically provided on both sides of the two sets of mating clamps (1). Two sets of adjusting guide rods (4) are symmetrically provided on the inner side of the two sets of positioning bases (3). Adjusting openings (5) are symmetrically provided on the end faces of the two sets of adjusting guide rods (4), and connecting seat assemblies (6) are sleeved on the outer side of the two sets of adjusting guide rods (4). The two sets of guiding rods (4) form a ring structure; The number of the directional openings (5) is no less than twenty sets, and the directional openings (5) are arranged in a ring symmetrical arrangement with respect to the center of the directional guide rod (4). The connecting seat assembly (6) includes a boom plate frame (61). Two sets of pressure-bearing supports (62) are symmetrically arranged at the upper and lower ends on one side of the boom plate frame (61), and two sets of guide slides (63) are symmetrically arranged at the middle position on the other side of the boom plate frame (61). The inner side of the guide slide (63) is provided with a guide groove (64) adapted to the adjusting guide rod (4), and the middle of the guide slide (63) is provided with a locking hole (65) adapted to the adjusting opening (5) through the end face of the boom plate frame (61). The output end of the pressure support (62) is symmetrically connected to the arm force connecting rod (66). The output end of the arm force connecting rod (66) is provided with a guide support (67). The inner side of the guide support (67) is provided with a lifting guide rod (68) and a compression guide rod (69) from left to right. The upper and lower ends of the compression guide rod (69) are symmetrically fitted with compression springs (610). The outer sides of the compression guide rod (69) and the lifting guide rod (68) are both fitted with guide bushings (611). The output end of the guide bushing (611) is symmetrically provided with an angle steel connecting seat (612). The locking opening (65) and the adjusting opening (5) have the same port size, and the locking opening (65) and the adjusting opening (5) correspond to each other one by one. The inner sides of the locking opening (65) and the adjusting opening (5) are equipped with fastening pins.

2. The connecting joint for steel pipes changing angle steel in a transmission line steel pipe tower according to claim 1, characterized in that, The upper and lower ports of the two sets of mating clamps (1) are both semi-circular structures, and the two sets of mating clamps (1) form a frustum cylinder.

3. The connecting joint for steel pipes changing angle steel in a transmission line steel pipe tower according to claim 1, characterized in that, The inner walls of both sets of mating clamps (1) are provided with anti-slip pads (7). The anti-slip pads (7) are made of NBR, HNBR or natural rubber, and the inner walls of the anti-slip pads (7) are polygonal prismatic structures.

4. The connecting joint for steel pipes changing angle steel in a transmission line steel pipe tower according to claim 1, characterized in that, The guide bushing (611) is elastically engaged with the lifting guide rod (68) and the compression guide rod (69) respectively by compression spring (610).

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