Correcting device for main beam of crane

Abstract

The invention relates to a correcting device for a main beam of a crane. The correcting device comprises a base A and a base B. The main beam is arranged on the upper side of the base A and the upper side of the base B. A support is arranged on the upper side of the middle of the main beam. A suspended frame is arranged on the inner side of the support. A heating pipe is arranged on the lower side of the suspended frame. A fixed seat A and a fixed seat B are arranged on the outer sides of the support respectively. A supporting table A is arranged on the left side of the main beam. A hydraulic cylinder A and a rotating seat A are arranged on the upper side of the supporting table A. A runner A is arranged on the upper side of the rotating seat A. A lock nut A is arranged on the right side of the rotating seat A. A piston rod A is arranged on the upper side of the hydraulic cylinder A and is connected with a steel rope A. A supporting table B is arranged on the right side of the main beam. A hydraulic cylinder B and a rotating seat B are arranged on the upper side of the supporting table B. A runner B is arranged on the upper side of the rotating seat B. A lock nut B is arranged on the left side of the rotating seat B. A piston rod B is arranged on the upper side of the hydraulic cylinder B and connected with a steel rope B. The correcting device has the beneficial effects of being easy to control and wide in application range.

Description

technical field [0001] The invention belongs to the technical field of cranes, in particular to a straightening device, in particular to a straightening device for a main girder of a crane. Background technique [0002] With the development of social economy and the rise of the logistics industry, cranes are used more and more. After long-term use of cranes, the main girder will deform and form subsidence, which will cause the electric trolley or electric hoist of the crane to fail to work normally on the main girder of the crane. Driving affects the normal use of the crane. At present, the flame correction method is often used for the correction of the main girder of the crane. The eccentric moment is generated by the contraction and deformation of the steel plate of the crane after being heated and cooled, so that the main girder is bent upwards, so as to realize the camber of the main girder. However, it is not easy to grasp the camber of the main beam repaired by the fla...

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Problems solved by technology

[0002] With the development of social economy and the rise of the logistics industry, cranes are used more and more. After long-term use of cranes, the main girder will deform and form subsidence, which will cause the electric trolley or electric hoist of the crane to fail to work normally on the main girder of the crane. Driving affects the normal use of the crane. At present, the flame correction method is often used for the correction of the main girder of the crane. The eccentric moment is generated by the contraction and deformation of the steel plate of the crane after being heated and cooled, so that the main girder is bent upwards, so as to realize the camber of the main girder. However, it is not easy to grasp the camber of the main beam repaired by the flame correction method. It is affected by the structural form of the main beam, the selection of heating points, and the uncertainty of the stress of the main beam structure, resulting in a long repair period, difficult control, and heavy workload. large, and has high requirements for the construction experience of operators, it is difficult to promote, and the scope of application is small; therefore, to provide a crane girder correction device with reasonable structure, simple operation, easy control, wide application range, accurate and fast correction is very necessary

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