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Test weight method of lifting ladle for large steel-making casting bridged crane

A technology of bridge cranes and cranes, which is applied to the testing of machines/structural components, measuring devices, instruments, etc., which can solve the problems of high difficulty and high cost, and achieve the effects of simple operation, low cost of measures, and simple trial weight process

Inactive Publication Date: 2009-10-28
BEIJING SHOUGANG CONSTR GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is the trial weight of large-scale casting bridge cranes in steelmaking. It is difficult and costly to adopt the conventional hanging basket trial weight method

Method used

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  • Test weight method of lifting ladle for large steel-making casting bridged crane
  • Test weight method of lifting ladle for large steel-making casting bridged crane

Examples

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Embodiment Construction

[0024] The steel-making large-scale foundry bridge crane lifts the steel ladle test weighing method in accordance with the following steps:

[0025] Step 1: Determine the number of ladles and the weight of iron in each ladle

[0026] Weigh out the weight of the steel ladle with a weighbridge, measure the actual size of the steel ladle on site, calculate the capacity of the steel ladle, and determine the number of steel ladles to be used according to the requirements of 1, 1.1, and 1.25 times the rated load of the crane test weight. Calculate and determine the weight of iron blocks to be loaded in each ladle (need to consider the gap between iron blocks).

[0027] Step 2: Preparation of counterweight

[0028] Prepare the iron block according to the requirements calculated in the first step, put the iron block into the ladle with an electromagnetic crane, and record the tonnage on the ladle, including the self-weight of the ladle.

[0029] Step 3: Inspection before crane trial...

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Abstract

The invention provides a test weight method of lifting ladle for a large steel-making casting bridged crane, belonging to the technical field of converter steelmaking, in particular to a large casting bridged crane. Without adopting normal nacelle test weight method, the method adopts a test weight method of taking a plurality of ladle iron blocks as counterweights and comprises the following steps of: determining the quantity of the ladles and the weight of the iron blocks needed by each ladle; preparing for counterweight; checking before running-in of the crane; running-in at empty load; and testing on static load; and running-in at dynamic load. The method has the advantages of leading the test weight procedure to be simple and greatly reducing the measure costs of the test weights.

Description

technical field [0001] The invention belongs to the technical field of converter steelmaking, and in particular provides a test weighing method for steel ladles lifted in series by a large casting bridge crane for steelmaking. This method is used for the test weights of large foundry bridge cranes suitable for lifting ladles in steelworks. Background technique [0002] In recent years, many new constructions and renovations have been carried out in the national steelmaking converter system, and the installed converters have become larger and larger, with 100t converters, 120t converters, 210t converters, 300t converters, etc. Ladle casting bridge cranes are getting bigger and bigger, such as 180 / 50t, 225 / 65t, 350 / 75t, 480 / 105t and other bridge cranes. The test weight of this type of bridge crane often adopts the hanging basket test weight method, which requires the production of a large hanging basket and the processing of two thick pin shafts for hoisting, which is expensi...

Claims

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Application Information

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IPC IPC(8): G01M19/00G01M99/00
Inventor 石亮生周亚新张有刚张永新
Owner BEIJING SHOUGANG CONSTR GROUP
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