Main bearing of heading machine and assembly method of main bearing

Abstract

The invention provides a main bearing of a heading machine. The main bearing comprises a first outer ring, a second outer ring, an inner ring, a main push roller assembly, an auxiliary push roller assembly and a radial roller assembly, the inner ring is sleeved with the first outer ring, and the inner wall of the first outer ring and the outer wall of the inner ring are spaced from each other to form an auxiliary pushing roller path used for installing the auxiliary pushing roller assembly; the second outer ring is arranged on the inner ring in a sleeving manner, and the inner wall of the second outer ring and the outer wall of the inner wall are mutually spaced to form a main push roller path for mounting the main push roller assembly and a radial roller path for mounting the radial roller assembly; the main push roller assembly comprises a first group of main push rollers, a second group of main push rollers and a main push retainer for mounting the first group of main push rollers and the second group of main push rollers; the auxiliary pushing roller assembly comprises an auxiliary pushing roller and an auxiliary pushing retainer used for installing the auxiliary pushing roller. The radial roller assembly comprises a radial roller and a radial retainer used for installing the radial roller.

Description

technical field [0001] The invention relates to the technical field of roadheaders, in particular to a roadheader main bearing and an assembly method thereof. Background technique [0002] Tunnel boring machine is a kind of construction machinery specially used for tunnel excavation. According to different geological conditions, it can excavate underground under the precise control of computer, and a high-quality tunnel can be formed after assembling segments at the end. The roadheader integrates machinery, electricity, and hydraulic pressure. It has high speed, high safety, wide applicability, and little impact on the ground during the construction process. Therefore, it is widely used in large tunnels such as urban subways, river-crossing tunnels, and sea-crossing tunnels. With the rapid development of social economy, many central cities are constantly expanding outwards and improving their underground transportation systems. At the same time, some emerging cities are deve...

AI Technical Summary

Problems solved by technology

In order to avoid jamming, there is enough space between each section of the cage. Although this can make the main bearing of the roadheader rotate more flexibly, the collision between the cages and the rollers will inevitably lead to Generation of abnormal noise and increased wear

At the same time, in order to reduce the wear of the cage on the ring, the legs and guide blocks are commonly used to relieve friction. However, due to the existence of gaps and the rotation of the main bearing of the roadheader during operation, the cage still inevitably collides with the ring. Affect the running state and service life of the main bearing of the roadheader

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