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Planetary gear unit

A planetary transmission, double planetary technology, applied in the field of planetary transmission, can solve problems such as uneven collision with each other, gear wear, etc.

Pending Publication Date: 2019-07-09
AB SKF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, if the gears change their direction of rotation, for example, performing a forward motion and a reverse motion, the backlash between the gears causes the gear teeth of the gears to impact ( / shock) each other unevenly in some cases (impact against)
This can lead to undesired gear wear

Method used

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  • Planetary gear unit
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] In the following, identical or functionally equivalent elements are designated by the same reference numerals.

[0050] figure 1 A planetary transmission ( / planetary transmission) 1 is shown comprising a first ring gear 2 and a second ring gear 4 . Furthermore, the planetary transmission 1 includes a first double planet 6 and a second double planet 12 . The two double planets 6, 12 are connected by a planet carrier 18 arranged between them. Alternatively, the planetary transmission 1 can also include only one double planet 6 . Additionally, a sun gear (not shown) may be used.

[0051] exist figure 1 In the embodiment shown, the first ring gear 2 is larger than the second ring gear 4 . Furthermore, the first ring gear 2 is fixed, with the planet carrier 18 serving as a driver for rotation in the direction of the arrow, and the second ring gear 4 serving as an output. Other designs and size ratios of the ring gear 2 , 4 to the double planet 6 , 12 are also possible....

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PUM

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Abstract

A planetary transmission 1 includes first and second ring gears 2,4 and a first double planet 6 with first and second gears 8,10 rotatably disposed about a common shaft and arranged such that the gearteeth of the first gear 8 of the first double planet engage into the gear teeth of the first ring gear, and the gear teeth of the second gear 10 of the first double planet engage into the gear teethof the second ring gear 4. The first gear 8 of the first double planet 6 is preloaded in a clockwise direction such that the gear teeth of the first gear of the first double planet are in contact withthe gear teeth of the first ring gear, and the second gear of the first double planet is preloaded in a counterclockwise direction such that the gear teeth of the second gear of the first double planet are in contact with the gear teeth of the second ring gear.

Description

technical field [0001] The present invention relates to a planetary transmission according to the preamble of technical solution 1 of this patent, which includes a first ring gear and a second ring gear and a first double planet. Background technique [0002] A planetary transmission ( / transmission) typically includes multiple gears. If the gear teeth of the gears of such a planetary transmission engage ( / mesh) one another, backlash often occurs between the gear teeth. For gears that only rotate in one direction, this has no further effect, because the gear teeth of the two gears that engage each other abut each other once during start-up, and then with this abutment ( / on this abutment Down) (with this abutment) rotation. No further abutment takes place in further operations ( / runs). [0003] However, if the gears change their direction of rotation, for example, perform forward motion and reverse motion, the backlash between the gears causes the gear teeth of the gears to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/32F16H55/18F16H57/08
CPCF16H1/32F16H55/18F16H57/08F16H1/28F16H2001/2881F16H1/2863F16H1/2836F16H2055/178F16H2001/289F16H55/17
Inventor 沃尔夫冈·格兰茨蒂尔曼·哈尔丹尼尔·雷克英戈·舒尔茨
Owner AB SKF