A Method for Changing and Adjusting Wheels of Large Cranes

Abstract

The invention discloses a method for changing and adjusting wheels of a large crane, which belongs to the technical field of crane equipment maintenance methods and is used for changing and adjusting wheels of a crane composed of multiple groups of wheel trolleys. The technical plan is: firstly, remove the connecting bolts of several groups of balance beams at the same time, lift the balance beams with hydraulic jacks, and transport the balance beams out one by one on a small transport tank; then, put the prepared balance beams and wheel assemblies Assemble together, adjust the horizontal deviation of the two groups of wheels on each group of balancing trolleys to be less than 0.1%, then tighten the fixing bolts of the wheels, adjust the level deviation of the two groups of wheels on a single balancing trolley out of tolerance, and adjust the single side of the cart To balance the horizontal deflection difference after assembly of the trolley, tighten the fixing bolts of each balance trolley and the end beam. The invention can quickly replace the wheels, improves the accuracy of wheel installation, does not need to readjust the horizontal combination form of the wheels, can ensure that the wheels reach the original installation size, and prolongs the service life of the wheels.

Description

technical field [0001] The invention relates to a method for adjusting wheels of a crane composed of multiple sets of wheel trolleys, and belongs to the technical field of crane equipment maintenance methods. Background technique [0002] Most of the large cranes consist of a wheel group composed of multiple sets of trolleys to form a traveling mechanism. Due to the large number of wheels, it is difficult to ensure that the installation position of each wheel is within the specified range and ensure synchronous operation, so the phenomenon of wheel gnawing often occurs , leading to a serious impact on the life of the wheels and rails. At present, changing and adjusting the wheel requires adjusting the processing error of the angular bearing box of the wheel during processing. In order to prevent the wheel from gnawing on the rail, the horizontal combination of the wheel must be readjusted every time the wheel is replaced. This work is It is a meticulous, complicated and tim...

AI Technical Summary

Problems solved by technology

[0002] Most of the large cranes consist of a wheel group composed of multiple sets of trolleys to form a traveling mechanism. Due to the large number of wheels, it is difficult to ensure that the installation position of each wheel is within the specified range and ensure synchronous operation, so the phenomenon of wheel gnawing often occurs , causing the life of the wheels and rails to be severely affected

At present, changing and adjusting the wheel requires adjusting the machining error of the angular bearing box of the wheel during processing. In order to prevent the wheel from gnawing on the rail, the horizontal combination of the wheel must be readjusted every time the wheel is changed. This work is It is a meticulous, complicated and time-consuming process. If the adjustment is not good, it will easily cause serious wheel gnawing. The wheels need to be replaced every 15 to 20 days, which not only increases the cost but also affects production. In order to solve this problem, the existing large The installation form of the running wheel is changed from an angular bearing box fixed on the curved plate of the balance beam to a circular bearing box fixed on the semicircular web of the 45° oblique throwing balance beam, thus improving the accuracy of wheel installation, And realizing simple and fast wheel replacement has become a problem faced by technicians

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