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Novel planetary reduction gear

A planetary reducer, a new type of technology, applied in the direction of gear transmission, belt/chain/gear, mechanical equipment, etc., can solve the problems of uneven casting stress, heavy machine base, poor casting performance, etc., and achieve light weight and process performance. Good results

Inactive Publication Date: 2009-11-18
JIANGSU TAILAI REDUCER
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Problems solved by technology

Multi-stage NGW planetary transmissions such as two-stage NBD and three-stage NCD adopt a one-stage series structure, and its disadvantages are: (1) The final internal gear bears 100% load; (2) The base design is unreasonable, and there are Square bosses and large opening windows lead to poor casting performance, excessively thick and uneven walls, resulting in casting stress, and heavy machine base;

Method used

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Embodiment Construction

[0011] The present invention is described in detail below in conjunction with accompanying drawing:

[0012] Such as figure 1 and 2 As shown, a new type of planetary reducer includes a base (1) and a closed combination gear train composed of quasi-planetary and planetary differential (or a quasi-planetary transmission in which the planetary differential is removed) installed in the base. In the gear train: the differential is composed of the sun gear (13), the planetary gear (11), the planetary carrier (12) and the internal gear (10); the quasi-planetary transmission is composed of the planetary wheel (8), the planetary carrier (4), the internal gear (2) The sun gear (5) is composed of: the sun gear (13) is connected to the shaft end of the input shaft (6), the involute spline in the inner hole of the planet carrier (12) is connected to the sun gear (5), and the sun gear (13) The wheel space is set on the input shaft (6), the internal gears (2), (10) are connected in the inn...

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Abstract

The invention discloses a novel planetary reduction gear, comprising an engine seat, a circular end enclosure, an output shaft, an input shaft, a bearing and a closed combination wheel train composed of a planetary carrier, an internal gear, a sun gear, a planetary wheel and a planetary wheel axle. The novel planetary reduction gear is characterized in that (a) the body of the engine seat is a revolving body with uniform wall thickness and has a radiating rib; (b) the wall thickness of the engine seat and torque acting on the engine seat meet the formula: T2 is equal to (10.5 minus 1.3) multiplied by delta(N.m), (delta is wall thickness mm); and (C) the excircle spline of the internal gear matches with a cylindrical internal spline. The planetary reduction gear has the beneficial effects that under the same weight condition, the bearing capacity is increased by 25-35 percent compared with an NGW planetary reduction gear, the engine seat is good in casting and technological properties and light in weight, and the service life of the internal gear can be doubled at least.

Description

technical field [0001] The invention relates to the technical field of planetary deceleration, and relates to a novel planetary decelerator. Background technique [0002] NGW planetary reduction transmission has become the most advanced reduction transmission technology in modern times because of the three characteristics of coaxial, internal meshing and power splitting, so it is widely used in mining, metallurgy, cement, machinery and other industrial sectors. Among them: single-stage NGW11~121, 12 grades, i=2.8~12.5; two-stage NGW42~122, 9 grades, i=14~160. Multi-stage NGW planetary transmissions such as two-stage NBD and three-stage NCD adopt a one-stage series structure, and its disadvantages are: (1) The final internal gear bears 100% load; (2) The base design is unreasonable, and there are Square bosses and large opening windows result in poor casting performance, excessively thick and uneven walls, resulting in casting stress, and heavy machine bases; (3) when multi-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/28
CPCF16H37/0833
Inventor 吴声震
Owner JIANGSU TAILAI REDUCER
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