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Maintenance method for online replacement of crane end beam

A crane and datum line technology, which is applied to the crane of the trolley, the load hanging element, the crane, etc., can solve the problems of long maintenance time, secondary error of maintenance data, and high demand conditions, so as to ensure the quality of maintenance and reduce secondary damage. Effect

Pending Publication Date: 2022-08-05
YANGCHUN NEW STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The replacement of traditional technology is mainly down-line replacement. It needs to dismantle the roof of the factory building, the crane trolley mechanism, the electrical control system of the crane, the production tooling platform, and the dismantling of the crane load-bearing system. The maintenance time is long and there are many factors affecting the quality. The requirement of the maintenance site is relatively high, and it is impossible to calibrate the diagonal horizontal data of the vehicle, the vertical centerline of the wheel, the parallelism of the wheel, etc. based on the operating conditions of the crane. The crane end beam is efficient and high-quality maintenance, therefore, the present invention proposes a maintenance method for online replacement of the crane end beam to solve the problems existing in the prior art

Method used

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  • Maintenance method for online replacement of crane end beam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] according to figure 1 , 2 As shown, the present embodiment proposes a maintenance method for online replacement of a crane end beam, including the following steps:

[0027] Make a set of jacking tooling according to the horizontal elevation of the crane main beam from the ground;

[0028] Collect data to find out the vertical, horizontal reference line and vertical center line of crane maintenance, and fix the three reference lines with steel wire to form measurement standard data;

[0029] Obtain the diagonal data of the crane, the parallelism data of the main beams on both sides of the end beams on both sides, and the fixed angle data of the end beams, move the crane trolley to the opposite side of the replacement end beam, and use the jacking tool to lift the main beam and level it;

[0030] Cut off the end beam on one side of the main girder, hoist it off the assembly line, put the new end beam online and find it within the standard range with reference to the dat...

Embodiment 2

[0034] according to figure 1 , 2 As shown, the present embodiment proposes a maintenance method for online replacement of a crane end beam, including the following steps:

[0035] The jacking tooling selects seamless steel pipe, installs channel steel scissor braces on the inside of the seamless steel pipe to form the tooling, and then uses steel plates to seal the upper and lower surfaces of the tooling. Specifically: DN350 seamless steel pipe, selected according to the height of the crane, with a screw jack below to adjust the height; 5# channel steel scissor support; 500mm*500mm*10mm steel plate.

[0036] Find out the vertical reference line for crane maintenance, specifically: park the crane at a position with high track flatness, take the track elevation as the reference point, implement the method of multi-point measurement and take the average value, and measure the track elevation as the maintenance measurement data The longitudinal reference line is used for the lif...

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Abstract

The invention provides a maintenance method for online replacement of a crane end beam, and relates to the technical field of bridge cranes, and the maintenance method comprises the following steps: manufacturing a group of jacking tools according to the horizontal elevation from a crane main beam to the ground; collecting data to find out longitudinal and transverse reference lines and a vertical center line of crane maintenance, and fixing the three reference lines by adopting a steel wire stay wire to form measurement standard data; diagonal data of the crane, parallelism data of end beams on two sides and main beams on two sides and fixed angle data of the end beams are obtained, the jacking tool is moved to the reverse side of the replaced end beams, and the main beams are jacked and leveled; cutting off an end beam on one side of the main beam, and hoisting off-line; by using the jacking tool and determining the longitudinal and transverse datum lines and the vertical center line in the overhauling process, the standard alignment range of the new end beam is determined by taking the datum lines as a reference, spot welding fixation and end beam full welding are carried out, the difficulty that the crane end beam is replaced, overhauled and offline is overcome, and the purposes of short time consumption and low cost of crane overhauling are achieved.

Description

technical field [0001] The invention relates to the technical field of overhead cranes, in particular to an overhaul method for online replacement of end beams of the crane. Background technique [0002] Overhead cranes are special equipment produced in heavy industry. The main load bearing components of cranes are: main beams, end beams, crane wheels, etc. to form a stressed frame. Therefore, the maintenance and replacement of end beams is very important to the stable operation of the crane's stressed structure; [0003] The traditional technology is mainly replaced by the offline replacement, which requires the removal of the factory floor, the crane trolley mechanism, the crane electrical control system, the production of the tooling platform, and the disassembly of the crane load-bearing system. The maintenance time is long and there are many factors affecting the quality. The requirements of the maintenance site are relatively high, and it is impossible to calibrate the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C19/00B66C6/00
CPCB66C19/00B66C6/00
Inventor 朱利强周勇胡磊
Owner YANGCHUN NEW STEEL CO LTD
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