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Correction device for main girder of crane

A technology for cranes and hydraulic cylinders, which is applied in the field of crane main girder correction devices and correction devices, which can solve the problems affecting the normal use of cranes, difficulty in grasping the camber of the main girder, and long repair work period, etc., and achieves stable and easy control of the correction operation process, The correction operation is convenient and fast, and the force is uniform

Active Publication Date: 2017-10-17
HENAN SINOKO CRANES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Correction device for main girder of crane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Such as figure 1 As shown, a crane girder straightening device includes a base A1 and a base B22, the upper side of the base A1 and the base B22 is provided with a main beam 26, and the upper side of the middle part of the main beam 26 is provided with a bracket 11 , the inside of the bracket 11 is provided with a suspension 12, the underside of the suspension 12 is provided with a heating tube 13, the outside of the bracket 11 is provided with a thermocouple 10, and the outside of the bracket 11 is also A fixed seat A9 and a fixed seat B14 are respectively provided, and the left side of the main beam 26 is provided with an abutment A2, and the upper side of the abutment A2 is provided with a hydraulic cylinder A4 and a swivel seat A3, and the swivel seat The upper side of A3 is provided with a runner A6, the right side of the swivel seat A3 is provided with a lock nut A7, the upper side of the hydraulic cylinder A4 is provided with a piston rod A5, and the piston rod A...

Embodiment 2

[0018] Such as figure 1 As shown, a crane girder straightening device includes a base A1 and a base B22, the upper side of the base A1 and the base B22 is provided with a main beam 26, and the upper side of the middle part of the main beam 26 is provided with a bracket 11 , the inside of the bracket 11 is provided with a suspension 12, the underside of the suspension 12 is provided with a heating tube 13, the outside of the bracket 11 is provided with a thermocouple 10, and the outside of the bracket 11 is also A fixed seat A9 and a fixed seat B14 are respectively provided, and the left side of the main beam 26 is provided with an abutment A2, and the upper side of the abutment A2 is provided with a hydraulic cylinder A4 and a swivel seat A3, and the swivel seat The upper side of A3 is provided with a runner A6, the right side of the swivel seat A3 is provided with a lock nut A7, the upper side of the hydraulic cylinder A4 is provided with a piston rod A5, and the piston rod A...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D1/00
CPCB21D1/00
Inventor 范武军崔丽刘继伟郑子鑫
Owner HENAN SINOKO CRANES