Four-bundle conductor lifting device for 660kV direct-current electric transmission line
A technology for DC transmission lines and wire lifters, applied to overhead lines/cable equipment, etc., can solve problems such as difficulty in tool installation, difficulty in completing maintenance work, inability to replace insulator accessories such as pressure equalizing rings, etc., to achieve fast installation and light weight. Effect
Inactive Publication Date: 2015-05-20
STATE GRID CORP OF CHINA +1
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Problems solved by technology
[0002] In the DC transmission lines of ±660 kV and above, the straight poles and towers are all in the form of composite insulator V strings. When replacing insulators or accessories, the previous tools can only replace a certain string of insulators in the V string, and cannot replace insulators such as voltage equalizing rings. accessories, and tools are difficult to install, making it difficult to complete maintenance work
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Embodiment Construction
[0008] Such as figure 1 As shown, the present invention provides a four-split wire lifter for a 660 kV direct current transmission line, comprising a manual hydraulic screw 2 (usually the manual hydraulic screw 2 is connected by a manual hydraulic control mechanism and a screw lever 3 communicated with a pipeline. The telescopic mechanism is composed, and the manual hydraulic screw 2 specifically refers to the screw lever 3 telescopic mechanism hereinafter; of course, the integrated manual hydraulic screw 2) that the above two mechanisms are fixed together can also be used. An iron tower connector 1 is installed on the top of the manual hydraulic screw 2 so that it can be fixed on the cross arm of the iron tower, and the screw lever 3 protruding from the bottom end of the manual hydraulic screw 2 is lifted by an insulating pull plate 4 and a four-hook. cable connection. Wherein the four-hook wire lifter comprises a support 6 on which four suspension hooks 5 are hinged.
[00...
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The invention relates to a four-bundle conductor lifting device for a 660kV direct-current electric transmission line. The four-bundle conductor lifting device comprises a manual hydraulic lead screw (2), and is characterized in that an iron tower connecting piece (1) is arranged at the top end of the manual hydraulic lead screw (2), so that the manual hydraulic lead screw (2) can be fixed on a cross arm of an iron tower; a lead screw rod (3) extending from the bottom end of the manual hydraulic lead screw (2) is connected with a four-hook conductor lifting device through an insulating pulling plate (4). The four-bundle conductor lifting device has the advantages of light mass and rapidness in mounting, vertical mounting can be realized, and the problem of incapability of replacing a V-series insulator and a grading ring simultaneously is effectively solved.
Description
technical field [0001] The invention relates to a four-split wire lifter for a 660 kV DC transmission line. Background technique [0002] In the DC transmission lines of ±660 kV and above, the straight poles and towers are all in the form of composite insulator V strings. When replacing insulators or accessories, the previous tools can only replace a certain string of insulators in the V string, and cannot replace insulators such as voltage equalizing rings. Accessories, and the installation of tools is difficult, making it difficult to complete maintenance work. Contents of the invention [0003] The object of the present invention is to provide a four-split wire lifter for a 660 kV direct current transmission line, which can achieve the purpose of simultaneously replacing V-string insulators and their accessories. [0004] A four-split wire lifter for a 660 kV direct current transmission line, including a manual hydraulic screw, which is special in that: an iron tower c...
Claims
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IPC IPC(8): H02G1/02
Inventor 郭瑞红于晓清郑仟常明远余伟叶大鹏高海鹏李胜花
Owner STATE GRID CORP OF CHINA