Accurately positioned tower crane

Abstract

The invention discloses an accurately positioned tower crane. The tower crane comprises a pedestal, the pedestal is connected with a control chamber through an electric telescoping rod, a connecting rack is arranged at the top end of the control chamber, a mounting rack is arranged in the connecting rack, the surface of the mounting rack is provided with a first motor, the output shaft of the first motor penetrates through the mounting rack, extends to a position below the mounting rack and is connected with the top end of the control chamber, the top end of the mounting rack at one side of the connecting rack is provided with a counterweight, and the top end of the mounting rack at the other side of the connecting rack is provided with a baffle block. A first ultrasonic receiver and a second ultrasonic receiver send received pieces of information to a PLC, and the PLC calculates according to received data in order to conveniently nail a hook hanging position, so the debugging process is reduced; and the side surface of a mounting block is provided with an alarm lamp, so the hook hanging position can be conveniently observed by an operator, and surrounding passing personnel is conveniently warned.

Description

technical field [0001] The invention relates to the technical field of tower cranes, in particular to a tower crane capable of precise positioning. Background technique [0002] Crane is a kind of lifting and handling machinery widely used in ports, workshops, electric power, construction sites and other places. The name of the crane is the unified name of the lifting machinery. Usually the cranes are mainly car cranes, crawler cranes and tire cranes. The cranes are used for hoisting equipment, emergency rescue, lifting, machinery, and rescue. Most of the operation is carried out through the feeling of the workers, so that repeated debugging is required during the lifting, thus prolonging the lifting time, and because there is no corresponding lighting setting on the lifting head, it has caused great inconvenience to the user's night operation. Big inconvenience. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome...

AI Technical Summary

Problems solved by technology

The name of the crane is the unified name of the lifting machinery. Usually the cranes are mainly car cranes, crawler cranes and tire cranes. The cranes are used for hoisting equipment, emergency rescue, lifting, machinery, and rescue. Most of the operation is carried out through the feeling of the workers, so that repeated debugging is required during the lifting, thus prolonging the lifting time, and because there is no corresponding lighting setting on the lifting head, it has caused great inconvenience to the user's night operation. big inconvenience

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