A rotary arm type lifting device used in a substation

Abstract

The invention discloses a rotating arm type hoisting device for a transformer substation. The rotating arm type hoisting device comprises a rotary column (7), a stand column (9), a cross beam (3), a coiling block (4) and a moving trolley (5), wherein the cross beam is fixed on the stand column; a rotating wheel (2) is arranged at one end of the cross beam, and a balancing weight (6) is arranged at the other end of the cross beam; the moving trolley is arranged on the cross beam; the coiling block is arranged on the moving trolley; a rope on the coiling block winds the rotating wheel; a rotary sleeve (10) is arranged at the lower end of the stand column; a connecting shaft (24) at the lower end of the rotary column enters the upper end of the stand column through plane bearings (17) arranged at an interval and is movably connected with the stand column; a gland (14) is fixedly arranged at the upper end of the stand column; a wear-resisting plate (3) is arranged in the gland; annular oil grooves (18) are formed in the upper surface of the wear-resisting plate at intervals; an oil through groove (15) and an oil injection hole (13) are formed between the annular oil grooves. The rotating arm type hoisting device disclosed by the invention enables the rotary column to be flexibly rotated on the stand column, is compact and simple in structure, convenient to use and maintain, free of limitation in use generally, safe and reliable.

Description

Technical field [0001] The invention relates to hoisting equipment, in particular to a hoisting device used for substation installation and replacement of electric equipment. Background technique [0002] When substations need to frequently replace equipment (such as isolating switches, transformers, lightning rods, etc.) due to changes in various conditions, these equipment are installed on the frame, which is difficult and unsafe to complete by manpower. Generally, cranes are required. Or use a pole for hoisting. If a crane is used to replace it, the power outage range is large and the cost is high. Some substation equipment is restricted by the construction environment. In specific construction, the power outage range is often only an interval, surrounded by live equipment, so the crane cannot be used; Due to its relatively long length, heavy volume, inconvenient transportation and handling, and the small space in the substation, the poles are surrounded by live equipment. The...

AI Technical Summary

Problems solved by technology

[0002] When substations need to frequently replace equipment (such as isolating switches, transformers, lightning rods, etc.) due to various changes in conditions, since these equipment are installed on the frame, it is difficult and unsafe to complete it by manpower alone. Generally, it is necessary to use a crane Or hold poles for hoisting. If a crane is used for replacement, the power outage range is large and the cost is high. Some substation equipment is limited by the construction environment. In specific construction, the power outage range is often only an interval, surrounded by live equipment, so the crane cannot be used; Due to its relatively long length and heavy volume, the pole is inconvenient for transportation and handling, and the space in the substation is small, surrounded by live equipment. When the pole is used, it often cannot meet the safety distance from the live equipment. The use of the pole is subject to certain restrictions. Restrictions, a slight inclination of the pole may touch the adjacent live equipment to discharge, posing a safety hazard

When fixing the pole, the pole is usually tied against the frame with ropes. Once the rope is loose during the construction process, the pole may overturn, resulting in poor stability and reliability.

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