Portal frame special for device installation of urban rail traffic power supply system

Abstract

The invention discloses a portal frame special for device installation of an urban rail traffic power supply system. The portal frame comprises cross beams. The cross beams are H-shaped I-steel, the two sides of the cross beams are correspondingly connected with first stand columns correspondingly. The bottoms of the first stand columns are correspondingly connected with second stand columns, and the first stand columns vertically stretch out and draw back in the second stand columns. The bottoms of the second stand columns are correspondingly connected with base steel channels, and a plurality of positioning through holes are formed in the second stand columns and correspondingly connected with positioning pins penetrating through the second stand columns. The bottoms of the base steel channels are correspondingly connected with universal trundles, and movable slide wheels are arranged on the cross beams. The portal frame special for device installation of the urban rail traffic power supply system has the advantages that the height can be adjusted, installation, dismantling and moving are convenient, construction is convenient and fast, and destruction and pollution to structural beams or the wall top are reduced.

Description

technical field [0001] The invention belongs to the field of installation and construction of urban rail transit power supply system equipment, and relates to a gantry dedicated to the installation of urban rail transit power supply system equipment. Background technique [0002] At present, one of the traditional equipment installation methods for urban rail transit is to transport the equipment to the basic channel steel with a manual forklift, stabilize the cabinet with a large rope, and then use crowbars and round steel bars to assist the equipment on the basic channel steel and slowly Slowly move to a suitable installation position. This method is time-consuming and laborious. The most important thing is to cause local damage to the cabinet, especially the part where the crowbar is in contact with the cabinet is likely to cause paint peeling and deformation. Moreover, when the center of gravity of a large cabinet is unstable, it is easy to cause dumping, endangering the...

AI Technical Summary

Problems solved by technology

[0002] At present, one of the traditional equipment installation methods for urban rail transit is to transport the equipment to the basic channel steel with a manual forklift, stabilize the cabinet with a large rope, and then use crowbars and round steel bars to assist the equipment on the basic channel steel and slowly Slowly move to a suitable installation position. This method is time-consuming and labor-intensive. The most important thing is to cause local damage to the cabinet body, especially the contact part between the crowbar and the cabinet body is likely to cause paint peeling and deformation.

Moreover, when the center of gravity of a large cabinet is unstable, it is easy to cause dumping, endangering the safety of operators and equipment

Another common installation method is to install chemical anchor bolts or mechanical anchor bolts on the top of the wall directly above the equipment to be installed, and then fix the chain hoist to lift the equipment and place it in the correct position. The method is more convenient and simple than the first method, but sometimes when the height of the equipment room is very high, it is necessary to use high-altitude scaffolding or other methods to install anchor bolts on the top of the wall, which will easily increase the safety risk of high-altitude operations, and the equipment must be removed after the installation is completed. Anchor bolts and inverted chain hoists increase the safety risk of secondary high-altitude operations, and when most equipment is installed, the top of the wall has been painted. This installation method is also likely to cause pollution on the top of the wall. At the same time, it is necessary to install anchor bolts directly above each device, so this installation method is very cumbersome, and the safety risk of working at heights also increases a lot

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