Tool special for wire drawing installation of electric transmission line guyed tower and wire drawing method
A special tool and transmission line technology, which is applied in the field of installation and construction of transmission line towers, can solve the problems such as the inability to take root of the lever hoist when tightening the cable, the small reserved space on the upper part of the pre-embedded hardware, and the inability to install the cable, so as to achieve less mechanical The effect of leasing costs, reducing environmental damage, and reducing engineering construction costs
Active Publication Date: 2015-11-25
POWERCHINA SEPCO1 ELECTRIC POWER CONSTR CO LTD
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Problems solved by technology
[0008] The lower end of the official guy wire needs to be connected to the embedded hardware of the guy pile foundation, and the temporary guy wire also needs to be connected to the embedded hardware of the foundation, but the reserved space above the embedded hardware of the guy pile is too small to connect the temporary guy wire and the official guy wire at the same time
In addition, when installing the official guy wire, the lever hoist used to tighten the guy wire cannot take root, the guy wire cannot be installed, and the segmental hoisting scheme of the guy wire tower cannot be implemented
[0009] In the domestic and foreign markets, there are no special tools for cable pretensioning that can meet the construction requirements, and the installation and construction of transmission line cable towers with a voltage level of 500kV and above cannot choose the "segmented hoisting vertical tower" scheme.
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[0042] Such as Figure 1 to Figure 7 As shown, in view of the existing defects, a special tool has been developed-a tool that can be fixed on the pull wire fittings connected to the foundation embedded fittings. The special tool can lead to multiple bolt hanging points for fixing temporary pull wires and tightening the formal Pull the lever hoist.
[0043] The structure of the assembly of the cable fittings and the cable embedded fittings is attached Image 6 . Among them, the bottom structure of the cable fitting 5 is V-shaped, and the upper part is a straight rod part, which is generally a steel part.
[0044] The tool part includes a splint, an ear plate and a fastener, wherein the splint and the fastener are arranged in pairs. There is one ear plate on the left and right, and the structure is described in detail below.
[0045] For the 4 part of the splint, prepare two rectangular steel plates, and process the channels 41 for installing the cable fittings on the two steel plat...
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The invention discloses a tool special for wire drawing installation of an electric transmission line guyed tower and a wire drawing method. The tool structurally comprises a clamping plate part, two lug plates and two fasteners. The clamping plate part is formed by buckling two clamping plates of the same structure. Each clamping plate is provided with a channel used for clamping a wire drawing hardware fitting. The portions, on the two sides of the channels, of the clamping plates are provided with grooves. The two lug plates of the same structure are installed in the grooves respectively. Bolt holes used for being fixedly connected with the clamping plates are formed in the lower portions of the lug plates. Reamed holes are formed in the upper portions of the lug plates. The two fasteners are located on the upper sides of the clamping plates. In a forest or a tower place with the complex terrain, large-tonnage autocranes cannot enter the place due to road and geological conditions, and the construction way of guyed tower erection through subsection hoisting is achieved by using the tool special for wire drawing installation, and environment damage caused by deforestation and the like is reduced.
Description
Technical field [0001] The invention relates to the technical field of installation and construction of cable towers of transmission lines. Specifically, it is an anchoring tool. Background technique [0002] In Brazil's power transmission lines, guyed towers are widely used. Among them, guyed towers account for 80% of 500kV double-circuit overhead AC transmission lines on the same tower. The installation of guyed towers is the main workload of line tower construction. [0003] The cable tower project is divided into two processes: ground tower assembly and tower erection. The erection process is divided into two types: integral erection and segmental erection according to the different heights of the tower and the hoisting site. [0004] In the double-circuit overhead lines on the same tower with voltage levels of 500kV and above, large-tonnage truck cranes are required for the overall hoisting of the guyed towers. Large-tonnage truck cranes have very high requirements on the hoist...
Claims
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IPC IPC(8): E04G21/14E04G21/16E04H12/08E04H12/20
Inventor 于运涛田玉波王聪邵国栋
Owner POWERCHINA SEPCO1 ELECTRIC POWER CONSTR CO LTD
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