Small tooth difference reducer of shield machine

Abstract

The invention relates to the technical field of shield machine deceleration. A small tooth difference reducer of a shield machine includes a main engine base, a large end cover and a small tooth difference transmission piece. The small tooth difference reducer of the shield machine is characterized in that the mounting dimension of the main engine base is identical to that of a third stage planetary outer housing in background art; a left rack and a right rack in an output mechanism are fastened with screws; the large end cover is fastened at the input end of the main engine base while the other end of the main engine base is sealed with a round ring plate, so that a closed round ring shaped cooling cavity is formed; the cylinder body of the large end cover is provided with an inlet and anoutlet; a temperature sensor is arranged near the outlet; oil storage cups provided with magnetic objects are arranged at the bottoms of the main engine base and the cylinder body of the large end cover; a bearing, which fits with an eccentric bushing, on a pin, is a roller bearing, a roller or a slide bearing; the small tooth difference transmission piece is a cycloid part, a double cycloid partor a star wheel part. The invention has technical effects that the structure is simplified by 25-30% and the weight is reduced by 20-25%; the heat dissipation of the closed interlayer is good; the temperature sensor feeds back temperature information in real time; the magnetic objects in the oil storage cups absorb iron scraps in oil, so that the service life of lubricating oil is prolonged; andthe output mechanism is good in rigidity.

Description

【Technical field】 [0001] The invention relates to the technical field of deceleration for earth pressure balance shield machines, and replaces the "main reducer" of the background art with three stages of involute planetary series in series with a single-stage small tooth difference, and is a reducer with small tooth differences for shield machines. 【Background technique】 [0002] Background technology 1: "High-power three-stage planetary reducer for earth pressure balance shield machine" (200810231114.1), which is a sub-project of the National 863 "Key Technology of Full-Section Tunneling Machine" "High-power reducer for earth pressure balance shield machine 》The declared invention patent. [0003] Background technology two: "240,000 Nm shield machine main drive reducer" (201410445870.X), was recognized by well-known experts and professors organized by the Ministry of Industry and Information Technology on December 25, 2015: the main technical performance indicators of the ...

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Problems solved by technology

[0023] The present invention replaces the three-stage planet with a single-stage small tooth difference, a shield machine with a small tooth difference reducer, and solves the technology that has plagued the "main reducer" of the shield machine in my country for many years due to temperature rise, low thermal power and poor rigidity of the planetary frame problem

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