Novel horizontal needle-guard-free cycloid speed reducer

Abstract

The invention relates to the technical field of cycloid speed reducers, and in particular relates to a novel horizontal needle-guard-free cycloid speed reducer which is composed of a body, an input shaft, a double-concentric bearing, a cycloid wheel, a needle tooth shell, a needle pin, a pin, a column sleeve, a W output mechanism and a bearing, wherein the speed reducer is characterized in that (A) the body is an external radiating rib and a thin wall cylinder body with mounting base feet at two sides; (B) the W output mechanism is composed of an output shaft, the pin and an equal loading disk; a ring plate on the pin enables the pin to form a simply support structure; in the W output mechanism, a bearing on the shaft neck of the output shaft is supported in the inner hole of the body by virtue of one bearing; and the other bearing in the inner hole of the equal loading disk is supported on the excircle of a flange in an end cover; (C) the needle tooth shell is installed in the inner hole of the body; and (D) the needle pin has no sleeve, and the needle pin is in movable fit with a semi-embedded hole. The speed reducer has the following beneficial effects: (1) the speed reducer is provided with the advanced thin-wall body and the W output mechanism, thus the weight is lightened by 20-30%, and the axial size is shortened by 25-35%; and (2) the needle tooth has no sleeve and is of a semi-embedded tooth, thus the bearing capability is 1.5-2 times that of a 6000 type.

Description

technical field [0001] The invention relates to the technical field of cycloid reducer, and relates to a novel horizontal needle-free cycloid reducer. Background technique [0002] Japan's Sumitomo Heavy Machinery Co., Ltd. has been researching cycloidal reducers without interruption. From Type 50 in 1969, Type 4000 in 1994, and Type 6000 in 2000, it is said that the development of 31 years has achieved up to 40 % lightweight. [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 housing is connected to the end surface of the machine body ...

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;

Images