Walking reducer of ultra-large hydraulic excavator

Abstract

The invention discloses a walking reducer of an ultra-large hydraulic excavator. The walking reducer of the ultra-large hydraulic excavator comprises a primary cylindrical gear reducing module, a secondary planetary reducing module and an external bearing module, wherein the primary cylindrical gear reducing module comprises a connecting cover, a flange base, a primary cylindrical gear and a primary cylindrical gear shaft; the secondary planetary reducing module comprises a fixing connector, a spline connecting disc, a secondary rotary case, a secondary sun gear, a secondary planetary gear, asecondary planetary carrier, a secondary annular gear, a connecting ring, a primary rotary case, a gear shaft, a primary planetary gear, a primary planetary carrier and a primary annular gear; the external bearing module comprises an inner fixing connector, an inner sealing plate, an outer sealing plate and a limiting block. The walking reducer of the ultra-large hydraulic excavator is smaller instructural size under the same output power; the walking reducer is in double-flange connection with a longitudinal beam frame, which is considerably higher in structural strength and rigidity than traditional single-flange cantilever connection; the entire walking reducer is arranged inside the frame of the ultra-large hydraulic excavator to avoid the risk of collision with other objects, therebyimproving walking through performance and meanwhile being compact in structure and convenient to assemble and disassemble.

Description

technical field [0001] The invention belongs to the technical field of reducers for heavy construction machinery, and in particular relates to a travel reducer for super-large hydraulic excavators. Background technique [0002] At present, most of the travel reducer structures of ultra-large hydraulic excavators widely used in the world use hydraulic motors to drive external two-stage or three-stage planetary reducers, and the reducers in the prior art are all placed in super-large hydraulic The inner side of the longitudinal beam of the excavator is connected with the longitudinal beam through a single flange. Due to the large size of the reducer, it will protrude more from the longitudinal beam, which makes the protection of the reducer difficult, poor walking performance, and failure high rate issues. Contents of the invention [0003] In view of the above problems, the present invention proposes a travel reducer for a super-large hydraulic excavator, which has a small...

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Problems solved by technology

[0002] At present, most of the travel reducer structures of ultra-large hydraulic excavators widely used in the world use hydraulic motors to drive external two-stage or three-stage planetary reducers, and the reducers in the prior art are all placed in super-large hydraulic The inner side of the longitudinal beam of the excavator is connected with the longitudinal beam through a single flange. Due to the large size of the reducer, it will protrude more from the longitudinal beam, which makes the protection of the reducer difficult, poor walking performance, and failure High rate and other issues

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