Wheel replacing and adjusting method for large crane

Abstract

The invention discloses a wheel replacing and adjusting method for a large crane, belongs to the technical field of crane equipment maintenance methods, and is used for replacing and adjusting crane wheels comprising multiple groups of wheel trolleys. According to the technical scheme, the method includes the following steps that firstly, connection bolts of several groups of balance beams are dismounted simultaneously, the balance beams are jacked by the aid of a hydraulic jack, and the balance beams are transported out one by one by the aid of a transport tankette; then the manufactured balance beams and wheel groups are assembled together, the horizontal deviation of two groups of wheels on each balance trolley is adjusted to be smaller than 0.1%, then fixing bolts of the wheels are screwed and fixed, the horizontal deviation of two groups of wheels on a single balance trolley is adjusted to be out of tolerance, the horizontal deviation difference after assembly of the balance trolleys on the single side of the large crane, and fixing bolts of the balance trolleys and end beams are screwed. With the method, the wheels can be replaced quickly, the wheel mounting accuracy is improved, the horizontal combination form of the wheels is not required to be adjusted again, the wheels can reach the original mounting size, and the service life of the wheels is prolonged.

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] Large cranes are mostly composed of multiple sets of trolley wheels to form a walking 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 to ensure synchronous operation, so the phenomenon of wheel gnawing often occurs. , Resulting in a serious impact on the life of wheels and rails. At present, the replacement and adjustment of wheels need to adjust the machining error caused by the angular bearing box of the wheel. In order to prevent the wheel from gnawing, the horizontal combination of the wheel must be adjusted every time the wheel is replaced. This work is A process that is meticulous, complicated and takes a long time. Poor adjustment can e...

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

Images