Single-input and double-output gear box and multi-point meshing gear driving system of ultra-large-sized mill

Abstract

The invention relates to a multi-point meshing gear driving system of an ultra-large-sized mill. A double-side driving mode is adopted; and two gear boxes are arranged on two sides of an open type gear ring of the mill. Each gear box comprises a box body, an input shaft supported by the box body and two torsion shafts serving as output shafts; hollow shafts I and hollow shafts II are arranged outside the torsion shafts in a sleeving manner, and are fixedly connected with the torsion shafts separately; a first-stage pinion is arranged at one end of the input shaft, and first-stage bull wheels are arranged at the middle parts of the hollow shafts I; the two first-stage bull wheels mesh with the first-stage pinion; and a second-stage pinion is arranged at the middle part of each of the two hollow shafts II. All the second-stage pinions in the two gear boxes mesh with the open type gear ring through inclined teeth; the input shafts are connected with a driving motor through a torsion-limiting shaft coupler; and a brake is arranged on the torsion-limiting shaft coupler. The multi-point meshing gear driving system solves the technical problems that a transmission device is low in loading power and an annular motor is high in direct-linkage driving cost in the prior art.

Description

technical field [0001] The invention relates to the field of gear transmission, in particular to a single-input double-output gear box and a multi-point meshing gear drive system for a super-large mill using the gear box. Background technique [0002] For conventional mining mills, there are many driving methods used at home and abroad, such as unilateral synchronous motor + open gear pair drive, unilateral asynchronous motor + gearbox + open gear pair drive, bilateral synchronous motor + open gear pair drive , Bilateral asynchronous motor + gearbox + open gear pair drive, etc. In the single-input double-output gearbox in the prior art, the output shaft is directly connected to two gears for input and output respectively on the same shaft. Research shows that when the installed power of the mill reaches more than 20,000kW (that is, the mill is For ultra-large mills), the above driving methods will not be applicable, and when choosing gearless transmission, that is, ring mot...

AI Technical Summary

Problems solved by technology

In the single-input double-output gearbox in the prior art, the output shaft is directly connected to two gears for input and output respectively on the same shaft. Research shows that when the installed power of the mill reaches more than 20,000kW (that is, the mill is For ultra-large mills), the above driving methods will not be applicable, and when choosing gearless transmission, that is, ring motor direct drive, the cost of the motor and control system is high, the system structure is complex, the environment is extremely demanding, and a professional maintenance team is required. Spare parts and maintenance costs are high, and reliability needs to be improved

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