Single bearing supporting generator for dumper

Abstract

The invention relates to a single bearing supporting generator for a dumper. The single bearing supporting generator for the dumper solves the problems that an existing single bearing generator is large in axial displacement and short in service life due to unreasonable choices of a bearing of the existing single bearing generator. The single bearing supporting generator for the dumper comprises an engine base, a connecting plate, a main engine rotor, a main engine stator, a rotary shaft, a rear end cover, a bearing, an inner bearing cover and an outer bearing cover, wherein the bearing is an electric insulation deep groove ball bearing with axial positioning capacity. After using the bearing, the generator can achieve axial positioning, the axial displacement is greatly reduced and can be basically ignored, axial force of the generator rotor can be prevented from exerting on a baffle ring of a bent axle of a diesel engine, too fast abrasion of the baffle ring is avoided, and service life of the baffle ring is also prolonged; in the mean time, the bearing has an electric insulation function, avoids the condition that the bearing of the generator is damaged by shaft current, prolongs service life of the bearing, and prolongs maintenance period of the whole dumper.

Description

technical field [0001] The invention relates to a generator, in particular to a single bearing supporting generator for a dump truck. Background technique [0002] At present, the transmission system of large mining electric dump trucks mostly uses an internal combustion engine to drive the electric transmission system. The internal combustion engine drives a synchronous generator to generate three-phase alternating current, which is rectified or inverted and then supplied to the traction motor to drive the vehicle. In order to save installation space, the generator is supported by a single bearing, and the other end is directly connected to the diesel engine. [0003] At present, the generators on dump trucks mainly use self-aligning roller bearings. The generators using this bearing have the following problems: 1) The axial movement of the bearing is relatively large. Generally, the axial movement of the crankshaft of a diesel engine is 0.3mm, while The axial movement of ...

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Problems solved by technology

[0003] At present, the generators on dump trucks mainly use self-aligning roller bearings. The generators using this bearing have the following problems: 1) The axial movement of the bearing is relatively large. Generally, the axial movement of the crankshaft of a diesel engine is 0.3mm, while The axial movement of the generator using this bearing is greater than 0.8mm, and the axial limit of the unit during operation is entirely borne by the diesel engine. The diesel engine retaining ring is severely worn and has a short life; Bearing damage, greatly reducing bearing service life

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