Gear ring and rolling way separable main driving bearing for shield tunneling machine

Abstract

The invention discloses a gear ring and rolling way separable main driving bearing for a shield tunneling machine. The gear ring and rolling way separable main driving bearing for the shield tunnelingmachine comprises an outer ring assembly, an inner ring assembly arranged in the outer ring assembly and a rolling body and a retainer which are arranged between the outer ring assembly and a rollingway of the inner ring assembly; the inner ring assembly comprises an inner gear ring and an inner gear ring rolling way arranged at the periphery of the inner gear ring in a sleeving mode; and the outer ring assembly comprises an outer ring upper end cover, an outer ring upper end cover rolling way, an outer ring lower base and an outer ring lower base rolling way. According to the gear ring androlling way separable main driving bearing for the shield tunneling machine, a damaged part can be quickly replaced when bearing gear teeth are crashed or seriously worn and the rolling ways are worn,materials with different properties can be adopted according to the working requirements of an outer ring base body, the rolling ways and the gear teeth when overall bearing manufacturing is conducted, and then the purposes of shortening the maintenance downtime time, improving the maintenance working efficiency, reducing the maintenance and manufacture cost and increasing the overall economic benefit are achieved.

Description

Technical field [0001] The invention belongs to the technical field of shield machines, and specifically relates to a main drive bearing for a shield machine, in particular to a three-row cylindrical roller bearing with a separable ring gear and raceway. Background technique [0002] The main drive bearing of the shield machine is the core component of the shield machine to transmit torque and power to the cutting cutter. In the existing main drive system of the shield machine, the main drive bearing generally adopts three-row cylindrical roller bearings, and the inner ring (tooth) Ring), outer ring, rolling elements and cage can be separated. The main working principle is as follows: the torque from the hydraulic motor or motor is transmitted to the driving pinion meshing with the main driving bearing after passing through the reducer. Driven by the gear, the ring gear will rotate accordingly. The outer ring of the bearing and the front shield of the shield machine are fixed tog...

AI Technical Summary

Problems solved by technology

The disadvantages of the above structure are as follows: 1) The gear teeth and the raceway are processed as a whole. When the teeth are chipped or worn seriously, they need to be replaced as a whole, resulting in high maintenance costs and long maintenance time; 2) The outer ring and the raceway are processed as One piece, when the bearing raceway wears seriously or the hardened layer peels off, it needs to be replaced as a whole; 3) Due to the large force on the bearing during work, the gear teeth and raceway require high hardness and wear resistance, and the bearing base The material is required to have good toughness and plasticity. Therefore, for bearings with integral processing of gear teeth and raceways, it is necessary to use materials with high overall performance, which virtually increases the manufacturing cost of the entire bearing.

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