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Acceleration and deceleration device

A technology of reduction gear and rotating shaft, which is applied in transmission devices, friction transmission devices, bearings, etc., can solve the problems of slipping and slipping ratios between outer wheels and shells, and achieve the effects of wide-range reduction ratios, noise realization, and slip suppression

Active Publication Date: 2014-11-05
MITSUBISHI HEAVY IND LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this structure, the frictional force acting between the outer wheel and the casing is used to stop. If the output torque increases, the rotational force acting on the outer wheel exceeds the frictional force, which may cause slippage between the outer wheel and the casing (slip rate Increase)

Method used

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  • Acceleration and deceleration device
  • Acceleration and deceleration device
  • Acceleration and deceleration device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0084] Below, refer to Figure 1 to Figure 4 The speed increase / deceleration device according to the first embodiment of the present invention will be described.

[0085] figure 1 It is a schematic diagram explaining the structure of the speed increaser / deceleration device of this embodiment.

[0086] In the present embodiment, the speed increase / deceleration device 1 of the present invention is an example for decelerating the rotational speed of the input rotational driving force, but it can also be used for acceleration and is not particularly limited.

[0087] Such as figure 1 As shown, the speed increase / deceleration device 1 has: an input shaft (first rotating shaft) 2 rotationally driven at a predetermined rotational speed by an external drive source (not shown); an output shaft rotating at a decelerated rotational speed based on a predetermined rotational speed ratio i Shaft (second rotation shaft) 3; housing 4 that supports input shaft 2 and output shaft 3 so as to ...

no. 2 approach

[0207] Below, refer to Figure 5 to Figure 7 A second embodiment of the present invention will be described.

[0208] The basic structural elements of the speed-up and speed-down device of this embodiment are the same as those of the first embodiment, but the structure of the speed-up and speed-down gear is different from that of the first embodiment. Therefore, only reference Figure 5 to Figure 7 The periphery of the bearing in this embodiment will be described, and the description of other structures and the like will be omitted.

[0209] Figure 5 It is a schematic diagram explaining the structure of the speed increaser / deceleration device of this embodiment.

[0210] In addition, the same code|symbol is attached|subjected to the same structure as 1st Embodiment, and the description is abbreviate|omitted.

[0211] Such as Figure 5 As shown, the speed increase and deceleration device 101 has: an input shaft 2 driven to rotate at a predetermined speed by an external dr...

no. 3 approach

[0237] Below, refer to Figure 8 to Figure 11 A third embodiment of the present invention will be described.

[0238] The basic structure of the speed increase / deceleration device of this embodiment is the same as that of the first embodiment, but the structure of the speed increase / deceleration bearing is different from that of the first embodiment. Therefore, only reference Figure 8 to Figure 11 The periphery of the bearing in this embodiment will be described, and the description of other structures and the like will be omitted.

[0239] Figure 8 It is a schematic diagram explaining the structure of the speed increaser / deceleration device of this embodiment.

[0240] In addition, the same code|symbol is attached|subjected to the same structure as 1st Embodiment, and the description is abbreviate|omitted.

[0241] Such as Figure 8 As shown, the increasing / decreasing device 201 has: an input shaft 2 driven to rotate at a predetermined rotational speed by an external d...

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Abstract

A first rotary shaft (2) and a second rotary (3) are disposed such that they are rotatable around a rotation axis (L). The second rotary shaft (3) has a cylindrical supporting part (11) that covers the end section of the first rotary shaft (2). A case (4) supports the first rotary shaft (2) and the second rotary shaft (3). A first rolling bearing (5) is disposed between the first rotary shaft (2) and the case (4) and supports the first rotary shaft (2) such that it is rotatable. A second rolling bearing (6) is disposed between the supporting part (11) and the first rotary shaft (2) and supports the first rotary shaft (2) and the second rotary shaft (3) such that they are rotatable relative to each other. A transmission part (11A) of the second rotary shaft (3) transmits to the second rolling bearing (6) a preload force that pushes the second rotary shaft (3) to the first rotary shaft (2) side. A load-receiving part (31A) of the case (4) that receives the preload force transmitted from the second rolling bearing (6) to the first rolling bearing (5).

Description

technical field [0001] The invention relates to an increase and decrease device. Background technique [0002] Conventionally, there is known a traction driver as an increasing / decreasing device that transmits power while changing the rotational speed input from an input shaft and outputting it from an output shaft (for example, refer to Patent Document 1 and Non-Patent Document 1). [0003] Patent Document 1: (Japanese) Unexamined Patent Publication No. 2002-243011 [0004] Non-Patent Document 1: Masato Niwa, Qiming Guan, Yoshigeka Kamiya, Masatoshi Kamiya, "Bearing Conversion Reducer Using a Planetary Mechanism", Proceedings of Lectures at the 2007 Spring Conference of the Society of Precision Engineering, 2007, 979- 980 pages [0005] Compared with the speed-up and speed-down device using gears, the above-mentioned traction drive has the advantages of less noise and less vibration. However, there is also a problem that it is difficult to realize a wide range of reducti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H13/08
CPCF16H13/08F16C19/163F16C19/364F16C19/542F16C2240/34F16C2361/61F16H13/06
Inventor 东崎康嘉吉见壮司园部浩之盐津勇松本将
Owner MITSUBISHI HEAVY IND LTD