Overhaul system for three-dimensional variable-cross-section A-shaped inclined steel box main tower and control method thereof

Abstract

The invention discloses an overhaul system for a three-dimensional variable-cross-section A-shaped inclined steel box main tower and a control method thereof. The overhaul system is characterized in that windlasses are arranged on a tower crown bottom plate of the three-dimensional variable-cross-section A-shaped inclined steel box main tower, and wire ropes of the windlasses pass through side wall plates of the tower body of the main tower through a guide fixed pulley arranged on the edge of the tower crown bottom plate so as to be used for lifting an overhaul platform attached to the periphery of the tower body of the main tower through rubber rollers; the overhaul platform can move along the tower body at the tower body section below the tower crown by virtue of the rubber rollers; and the rubber rollers are fixedly connected on the overhaul platform by virtue of screw rods, and the length of each screw rod can be adjusted so as to enable each rubber roller to be attached to the periphery of the tower body of the main tower. By adopting the overhaul system and the control method, aiming at the specific conditions that the variable-cross-section A-shaped steel box main tower is high and the tower body is in an inclined state, the overhaul and maintenance construction of the tower body can be effectively realized, the material consumption of the overhaul equipment is little, the construction cost is reduced, and the construction safety is ensured.

Description

technical field [0001] The invention relates to a three-dimensional variable cross-section A-shaped inclined steel box main tower maintenance system and a control method thereof, which are mainly used for appearance painting and maintenance of an A-shaped steel main tower with an inclined main tower and a twisted cross-section of the tower body. Background technique [0002] With the rapid development of my country's economy, the construction of domestic large bridges has entered a new climax, and the A-shaped steel box main tower structure has become an important application method of large bridge main towers. For the construction of the A-shaped steel box main tower structure with a height of more than 100m, the repair and maintenance after the completion of the bridge is one of the key elements of construction control. For the maintenance and painting of the tower body of general bridges, brackets or simple hanging baskets can be directly installed around the tower for co...

AI Technical Summary

Problems solved by technology

For the maintenance and painting of the tower body of general bridges, brackets or simple hanging baskets can be directly installed around the tower for construction. The method of construction will increase the cost of erecting the support, and it is necessary to complete the appearance inspection and maintenance of the 100m-high main tower. The erection of the support is quite difficult, and the construction period is difficult to control

If ordinary hanging baskets are used, there is no hanging point on the outside of the tower body, and ordinary hanging baskets will damage the finish paint of the inclined main tower under the action of their own weight, which is not conducive to construction

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