Portable aloft lifting device

Abstract

The invention discloses a portable aloft lifting device. The portable aloft lifting device comprises a locking mechanism, a frame, a power mechanism, a lifting and conveying mechanism and a safety ratchet mechanism, wherein a twisted rope wheel is arranged in the frame. The safety ratchet mechanism comprises a ratchet and a positioning plate, wherein the ratchet is coaxially connected with the twisted rope wheel, the plate body of the positioning plate is hinged to the side wall of the frame, a pawl matched with the ratchet is arranged at the front end of the positioning plate, a protruding portion is arranged at the end, away from the pawl, of the positioning plate, a through hole penetrating through the protruding portion and the portion, corresponding to the protruding portion, of the positioning plate is formed in the protruding portion, a positioning rod is arranged in the through hole, a positioning protrusion matched with the positioning hole in the side wall of the frame is arranged at the front end of the positioning rod, and the safety ratchet mechanism further comprises a torsional spring which makes the pawl and the ratchet tightly meshed. Due to the adoption of the structure, the portable aloft lifting device has the advantages of being small in size, light in weight, easy to install, high in work efficiency, simple in structure and high in adaptability and safety.

Description

technical field [0001] The invention relates to a lifting device for a high-altitude operation tool of a power transmission line, in particular to a portable high-altitude lifting device. Background technique [0002] With the rapid development of the economy, the society's demand for electricity is increasing, the voltage level of long-distance transmission lines is also increasing, the length of transmission lines is also increasing, and the height of transmission line towers is also increasing. At present, the average height of single-circuit 220 kV line towers is about 35 meters, and the average height of double-circuit 220 kV line towers is about 50 meters; the average height of single-circuit 500 kV line towers is about 45 meters, and the average height of double-circuit 500 kV line towers The height is about 65 meters; the average height of the double-circuit 1000 kV line tower is about 100 meters. [0003] As the length of transmission lines continues to increase, t...

AI Technical Summary

Problems solved by technology

When high-altitude workers carry a transfer rope hundreds of meters long and weigh more than ten kilograms to climb the tower, it not only greatly consumes the physical strength of the workers, but also has low work efficiency. At the same time, this traditional operation method also has certain safety hazards. Hidden danger

Therefore, every high-altitude maintenance and construction work requires a lot of manpower and material resources, and the operators need to spend more energy to complete a job. The construction is difficult and the cost of the construction work is high.

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