Novel vertical type needle-sleeve-free cycloid reducer

Abstract

The invention relates to the technical field of cycloid reducers. A novel vertical type needle-sleeve-free cycloid reducer is composed of a machine body, an input shaft, double-eccentric bearings, a cycloid gear, a needle gear shell, needle pins, a column pin, a column sleeve, a W output mechanism and bearings. The novel vertical type needle-sleeve-free cycloid reducer is characterized in that: (A) a vertical type thin-wall cylinder with flange rings on two end faces and a reinforcing rib at the outer part is utilized; (B) the W output mechanism is composed of an output shaft, the column pin and a uniform loading disc; a simple support structure is formed by the column pin through utilizing an upper annular plate on the column pin; in the W output mechanism, the neck of the output shaft is supported in an inner hole of the machine body through utilizing the bearing and an inner hole of the uniform loading disc is supported on the outer circle of a flange in an end cover through the other bearing; (C) the needle gear shell with semi-buried holes is installed in the inner hole of the machine body; (D) the needle pins have no sleeves and the needle pins are movably matched with the semi-buried holes. In the invention, the reducer has the beneficial effects as follows: (1) the reducer has the advanced thin-wall machine body and the W output mechanism, so that the weight is reduced by 20-30% and the axial size is shortened by 25-35%; and (2) the needle pins have no sleeves so that the bearing capability is 1.5-2 times as much as that of a 6000 type reducer.

Description

technical field [0001] The invention relates to the technical field of cycloidal deceleration, and relates to a novel vertical cycloidal decelerator without a needle sleeve. Background technique [0002] Japan's Sumitomo Heavy Machinery Co., Ltd. has been researching on cycloidal pinwheel transmission without interruption. From the 50 type in 1969, the 4000 type in 1994, to the 6000 type in 2000, it is said that the research and development for 31 years has achieved up to 40% lighter. [0003] After my country was introduced from Japan in the 1960s, the domestic reducer industry quickly became crazy. Cycloidal reducer products include horizontal WX series, vertical LX series, horizontal WB series, vertical LB series, and chemical industry Ministry of Standards and Ministry of Machinery Standard B series. [0004] The study found that there are three problems in the structure of Sumitomo 6000 in Japan and the X and B series in China: [0005] (A) The traditional "pintooth h...

AI Technical Summary

Problems solved by technology

[0009] (C-2) The lubricating oil splashed in the reducer cannot lubricate the friction surface of the top few pin teeth and the needle sleeve;

[0010] (C-3) In order not to cause excessive bending deformation, the pins of the pin structure with two fulcrums must have a sufficiently large pin diameter. In addition, the short-width coefficient K 2 =R Z r z -1 Sin(180 / z b ) tells us that due to the needle cover (r z ) When the reduction ratio is greater than 43, most models must pull out the teeth, and the result of pulling out the teeth is that the load-carrying capacity is reduced by half;

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