Rotatable low-clearance bridge type carrying crane

Abstract

A rotatable low-clearance bridge type carrying crane comprises a crane carriage running on a main beam, and is characterized in that a horizontally rotating turntable is arranged on the crane carriage, a rotating part of the turntable is connected with a multi-section telescopic arm, and the multi-section telescopic arm stretches out and draws back in the vertical direction under the traction of a winch; and the lower end of the multi-section telescopic arm is connected with a grabbing mechanical arm. Four degrees of freedom are provided for the grabbing mechanical arm, the grabbing mechanical arm can grab goods in a motion space through the four degrees of freedom, the goods are placed at another place after the grabbing mechanical arm rotates by a certain angle, and the orientation problem of goods taking and placing is solved. Due to the fact that the multi-section telescopic arm has good rigidity and a very low swing amount, accurate positioning of goods taking and placing can be achieved. Manual assistance is not needed, the labor cost is reduced, and unmanned and intelligent operation of the bridge type carrying crane is facilitated.

Description

technical field [0001] The invention relates to the field of lifting, in particular to a rotatable low clearance bridge type handling crane. Background technique [0002] With the advancement of science and technology, the material handling system is gradually developing towards unmanned and intelligent, which requires the material handling system to have the characteristics of high positioning accuracy and flexible picking. Compared with intelligent material handling equipment such as AGV trolleys and handling robots, bridge handling cranes have the advantages of large lifting tonnage, wide coverage of the handling area, no floor space, and no restrictions on the height of material stacking. The disadvantage is that most bridge handling cranes only add material grabbing devices (grabbing manipulators) on the basis of traditional hoisting cranes. Due to the swaying nature of the hanging rope, there are poor positioning accuracy when picking and placing materials. It is diff...

AI Technical Summary

Problems solved by technology

The disadvantage is that most bridge handling cranes only add material grabbing devices (grabbing manipulators) on the basis of traditional hoisting cranes. Due to the swaying nature of the hanging rope, there are poor positioning accuracy when picking and placing materials. It is difficult to solve defects such as the inability to change the direction of material pick-and-place, so manual assistance is required during operation

This not only increases labor costs, but also does not conform to the trend of unmanned and intelligent development of bridge handling cranes.

Images