A kind of bolt cutter for large-diameter wire

Abstract

The invention discloses a bolt cutter for large-diameter wires, which comprises an oil storage rod, an operating rod, an oil return ejector rod and a bolt cutter head, and the operating rod is arranged on one side of the oil storage rod through an annular rope buckle at the front end , the operating rod rotates clockwise around the ring rope buckle and closes to the oil storage rod. The front end of the oil storage rod is equipped with an oil cylinder, and the oil return ejector rod is set at the front end of the oil cylinder. The oil return ejector rod is located below the operating rod. A control valve, the control valve is connected with the operating rod through a spring, and the front end of the oil return ejector rod is connected with a bolt cutter head. The bolt cutter for large-diameter conductors of the present invention is suitable for large-diameter conductors, improves work efficiency, reduces the burden on workers working at high altitudes, and meets the needs of the development of my country's electric power industry on the premise of ensuring the quality of line construction and maintenance , has broad application prospects.

Description

technical field [0001] The invention relates to a bolt cutter for large-diameter wires, belonging to the technical field of line construction. Background technique [0002] With the increase of social demand for electricity, the line voltage level is getting higher and higher, the line channel is becoming more and more complex, and more and more transmission lines (especially 220kV and 500 kV lines) are erected by tension wires, resulting in Conductors and ground wires need to be disconnected at high altitude. In the daily repair and maintenance of the line, it is not uncommon to require breaking and crimping the ground wire at high altitude, and the bolt cutter has become an indispensable tool in the line construction and repair. For lines with complex passageways, intersecting high-speed railways, canals, or lines with other voltage levels, shortening the time for power outages and construction maintenance can greatly improve line power supply reliability and social and e...

AI Technical Summary

Problems solved by technology

The mechanical linkage structure bolt cutter is characterized by simple structure and convenient operation, but the disadvantages of this kind of bolt cutter are also very prominent, that is, the requirements for operators in high-altitude operations are relatively high, and in addition, the adaptability to different wire diameters is relatively high. Poor, the cut is not neat enough; the characteristic of the hydraulic structure bolt cutter is to use the hydraulic principle to save the physical strength of the operator, but the front part of the bolt cutter is too heavy and not flexible enough, and the angle is single, which limits its use

[0004] For wires with large wire diameters, there are no special bolt cutters at home and abroad. Domestic bolt cutters can be used up to LGJ630, and foreign countries can be used up to LGJ800. In substations, during busbar construction, with the continuous improvement of voltage levels Many new problems, such as the maximum bus wire diameter used in 500kV substation has reached LGJ1440, the existing bolt cutters obviously cannot meet the demand

[0005] At this stage, the steel core and aluminum strands are generally treated separately for large-diameter conductors, that is, the aluminum strands are first cut off with a saw bow, and then the steel core is cut off with bolt cutters. This method takes a long time and is harmful to The technical requirements of construction personnel are high, which increases the construction cost, and it is difficult to ensure the requirements of construction technology. There are certain limitations in the use of construction sites with complex environments.

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