Device and method for lifting spherical shell plate with column leg in single machine without ascending to unload hook

Abstract

The invention relates to a device and a method for lifting a spherical shell plate with a column leg in a single machine without ascending to unload a hook. The device comprises a crane, a hook head, a lifting rope, an anti-falling rope, a lifting clamp, a tripping rope and a hauling device. The method for carrying out climbing-free hook unloading by utilizing the device comprises the following steps that the spherical shell plate with the column leg is hoisted to the column leg end of the spherical shell plate, the spherical shell plate is placed on the hauling device, a crane is started, a hook head is lifted, so that the column leg of the spherical shell plate with the column leg, which is placed on the hauling device, drives the hauling device to move forwards until the column leg is vertical to the ground, then the vertical column leg of the spherical shell plate with the column leg is hoisted to the basic plane, the hook head descends to the lifting rope, when the lifting clamp is not stressed, the tripping rope is swung to open the lifting clamp, the spherical shell plate with the column leg is separated from the lifting clamp, and climbing-free hook unloading is completed. According to the device, a scaffold does not need to be erected in advance, after the spherical shell plate is hoisted in place, a conical pin is pulled out through a rope, the hoisting clamp is automatically separated from the positioning block on the spherical shell plate, hook unloading is completed, and the cost for using a large crane is saved.

Description

technical field [0001] The invention belongs to the technical field of hoisting spherical shell panels with column legs, and in particular relates to a device and method for hoisting spherical shell panels with column legs without climbing up and unloading hooks by a single machine. Background technique [0002] Spherical storage tank is a large-scale pressure vessel designed according to the technical requirements of chemical, petroleum, chemical fertilizer, pharmaceutical and other project equipment. On the construction site of the project, the hoisting group butt welding installation is carried out, and the volume of the spherical tank is 400m 3 -20000m 3 Not equal, the body shape is larger, and the position of the hook is higher during hoisting. The traditional unloading hook uses another crane to lift the loading cage to the hoisting hook for unloading, which increases the cost of the crane; or set up scaffolding in advance. Personnel ascend the height to unload the h...

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Problems solved by technology

[0002] Spherical storage tank is a large-scale pressure vessel designed according to the technical requirements of chemical, petroleum, chemical fertilizer, pharmaceutical and other project equipment. On the construction site of the project, the hoisting group butt welding installation is carried out, and the volume of the spherical tank is 400m 3 -20000m 3 Not equal, the body shape is larger, and the position of the hook is higher during hoisting. The traditional unloading hook uses another crane to lift the loading cage to the hoisting hook for unloading, which increases the cost of the crane; or set up scaffolding in advance. Personnel ascend the height to unload the hook. Setting up the scaffolding in advance will increase the difficulty of hoisting the spherical shell plate and require a larger crane, which will increase the cost of the crane.

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