Bracket for use in processing of heavy spindle of large turbine generator

Abstract

The invention relates to a bracket for use in the processing of a heavy spindle of a large turbine generator. In the bracket, a screw rod on the lower part of a vertical shaft is meshed with a nut on the base of the bracket, and a horizontal level is in sliding fit with a horizontal hole in the middle part of the vertical shaft. A bearing seat and a thrust ball bearing, which are matched mutually, are arranged in the center of a lower plate of a rotating seat; a conical roller bearing is arranged in the center of an upper plate of the rotating seat; and the thrust ball bearing and the conicalroller bearing are matched and arranged on the upper end of the vertical shaft. A bottom plate of a supporting seat of a roller supporting component is matched with the upper plate of the rotating seat correspondingly and is positioned and fastened by a bolt; and two parallel mandrels which are on the same horizontal plane are positioned and fastened on the upper parts of two vertical plates of the supporting seat, and two rollers, which are positioned between the two vertical plates of the supporting seat, are matched and arranged in the middle parts of respective mandrels by bearings. Adjusting supports are arranged on two sides of the upper plate of the rotating seat, and adjusting bolts are arranged in screw holes in the adjusting supports. The bracket can reduce the intensity of the labor consumed by loading and clamping the heavy spindle on a machine tool and ensure product processing quality, and is simple to operate, high in production efficiency, safe and reliable.

Description

technical field [0001] The invention relates to a mechanical processing auxiliary device, in particular to a bracket for processing a heavy main shaft of a large hydraulic generator. Background technique [0002] The length and weight of the main shaft of a large-scale hydro-generator are relatively large, the length is generally more than 4 meters, and the weight is generally more than 7 tons. It is necessary to process a coupling hole with a specification greater than φ32mm on the end surface of the main shaft (such as a uniformly distributed hole for connecting with the main shaft of the water turbine). Cross-pin hole, etc.); the processing range of the general factory universal radial drilling machine is less than φ32mm, so the method of laying the spindle flat and processing it with the universal radial drilling machine is not feasible. At present, one processing method is to dig a deep well, hoist the main shaft into the deep well in the vertical direction and then fix...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it is difficult to control the amount of rotation of the spindle. Sometimes it takes multiple adjustments to complete the alignment between the center of the hole to be machined and the center of the tool. The efficiency is very low and the risk is high.

[0003] In the process of clamping and processing, the above method is not only time-consuming and inefficient, but also the wooden pad at the left end cannot be fixed. Under the action of the heavy spindle, it is very easy to cause the risk of rollover due to uneven force.

Images