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Closed planetary gear reducer

A gear reducer, planetary gear technology, applied in the direction of gear transmission, belt/chain/gear, mechanical equipment, etc., can solve the problems of small output torque, bearing capacity, impact resistance, vibration resistance, etc. Long service life, compact structure, small size effect

Inactive Publication Date: 2007-10-03
丁开仙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patent No. CN200520027733.0 "Cycloidal pinwheel planetary reducer with built-in input shaft", although it also provides a shaft extension end of the input shaft is set in the round hole of the output shaft, the support is fixed on the pinwheel The front and rear ends are composed of flange-shaped front and rear end covers. A hanger can be installed on the front end cover, and a reel can be installed on the output shaft. It is used for wire rope electric hoists that need to bear both power transmission and load. Hoisting machines such as hoists, but the reel for winding the wire rope is still installed on the output shaft outside the input shaft, so that its bearing capacity, impact resistance, and vibration resistance are not enough, and the output torque is not large, and it can only be used in Installation and use on small lifting machinery

Method used

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Experimental program
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Embodiment Construction

[0011] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0012] The first and second-level planetary carriers 20 and 28 have the same structure. There are one and second-level center wheels 23 and 27 at the middle through hole, and three arc-shaped bosses uniformly distributed on the surface and arranged at intervals between the first and second-level planet shaft holes. There are screw holes in the middle of the boss, as shown in Figure 1, Figure 2, and Figure 4.

[0013] The outer ring at one end of the three-stage planet carrier 34 and the middle through hole are respectively tightly fitted with the bushing 2 with the bearing 3 and the bearing seat 33 with the bearing 4, and there are four three-stage planetary shafts evenly distributed on one end surface hole, as shown in Figure 1.

[0014] There are through holes in the middle of two and three-stage sun gears 25,32, and one end is a gear, and the other e...

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Abstract

The closed planetary gear reducer consists of input shaft with sun gears, planet shaft, planet carriers, planet gears and ring gear serving as output shaft. The three planet carriers are mounted on shaft sleeve with bearings and bearing seats on the ring gear; the central gears on the first and the second planet carriers are connected to the second and the third sun gears; and the output shaft is connected to the first, the second and the third sun gears and bearings. The ring gear serving as the shell and the output shaft has great diameter, smooth operation, great bearing capacity, use safety and high strength. The present invention has compact structure, small size, less wear, low noise and high transmission efficiency.

Description

technical field [0001] The invention relates to a planetary gear reducer, in particular to a closed planetary gear reducer suitable for installation and use on hoisting machinery such as wire rope electric hoists, winches, hoists, and tractors. Background technique [0002] Patent No. CN200520031509.9 "Electric hoist reducer with small tooth difference transmission" provides a power shaft located in the casing with a double eccentric shaft structure. Two planetary gears are arranged on the eccentric shaft, and the planetary gears are respectively fixed The inner ring gear on the inner wall of the casing meshes, and is connected with the pin plate fixed on the bushing through the pin shaft. Although the input shaft and output shaft of this structure are on the same side of the casing, the structure is compact, but the output torque is not large. It is not suitable for installation and use on large hoisting machinery. [0003] Patent No. CN200520027733.0 "Cycloidal pinwheel p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/32
Inventor 丁开仙俞渭江
Owner 丁开仙
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