Soil pressure balance shield machine cycloid speed reducer

Abstract

The invention relates to the technical field of shield machine speed reduction, and discloses a soil pressure balance shield machine cycloid speed reducer. The soil pressure balance shield machine cycloid speed reducer is characterized in that: a cycloid driving part is arranged in a cavity formed by connecting a front end cover with a back end cover by using a pin wheel housing, wherein a half-buried hole of the pin wheel housing is in movable fit with a sleeveless needle pin; four cycloidal wheels are arranged on a double-eccentric bearing, wherein the phase difference between a first cycloidal wheel and a second cycloidal wheel and between a third cycloidal wheel and a fourth cycloidal wheel is 180 degrees, and the second cycloidal wheel and the third cycloidal wheel have the same phase; and a W output mechanism consists of an output shaft, a pin and a uniform loading plate, the pin is provided with three circular ring plates to form a four-section freely supported structure, and the W output mechanism is supported in an inner hole of a front end cover and an inner flange outer circle of a back end cover through a bearing respectively. The soil pressure balance shield machine cycloid speed reducer has the following advantages that: (1) the axial size is 45 to 55 percent shorter than that of a third-class planetary reduction gear of the background art; (2) the cycloidal wheels can be assembled in a reversed mode to double the service life; (3) the manufacturing cost is 40 to 50 percent of that of the third-class planetary reduction gear of the background art; and (4) the inertia force and the inertia moment in operation are theoretically completely balanced.

Description

technical field [0001] The invention relates to the technical field of shield machine deceleration, and relates to a cycloid reducer for an earth pressure balance shield machine. Background technique [0002] "High-power three-stage planetary reducer for earth pressure balance shield machine" (200810231114.1) of CITIC Heavy Industry Machinery Co., Ltd. and Luoyang Mining Machinery Design and Research Institute is a national 863 plan project for three years from 2007 to 2010. This project is currently the core component of the world's most advanced tunnel construction machinery - earth pressure balance shield machine. my country has long relied on imports, with long delivery times and high prices. [0003] The concept of the invention is based on ①Cheng Daxian's "Mechanical Design Manual" Volume 3. Figure 14-5-31; ②Zhu Xiaolu's "Gear Transmission Design Manual" Figure 7-23; ③"Suspension Balanced Planetary Gear Reducer" 95243413. X; ④ Zhang Zhan "Planetary Differential Transm...

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Problems solved by technology

This project is currently the core component of the most advanced tunnel construction machinery in the world - the earth pressure balance shield machine. my country has long relied on imports, and the delivery time is long and the price is expensive.

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