WO2014155452A1 - Réducteur - Google Patents

Réducteur Download PDF

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Publication number
WO2014155452A1
WO2014155452A1 PCT/JP2013/007161 JP2013007161W WO2014155452A1 WO 2014155452 A1 WO2014155452 A1 WO 2014155452A1 JP 2013007161 W JP2013007161 W JP 2013007161W WO 2014155452 A1 WO2014155452 A1 WO 2014155452A1
Authority
WO
WIPO (PCT)
Prior art keywords
fan
speed reducer
casing
input shaft
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2013/007161
Other languages
English (en)
Japanese (ja)
Inventor
木村　一博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Heavy Industries Ltd
Original Assignee
Sumitomo Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Heavy Industries Ltd filed Critical Sumitomo Heavy Industries Ltd
Priority to CN201380073022.4A priority Critical patent/CN104995436A/zh
Publication of WO2014155452A1 publication Critical patent/WO2014155452A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
    • F16H57/0416—Air cooling or ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0493—Gearings with spur or bevel gears 
    • F16H57/0495—Gearings with spur or bevel gears  with fixed gear ratio

Definitions

  • the present invention relates to a reduction gear provided with a cooling fan.
  • Patent Document 1 discloses a speed reducer in which a cooling fan is attached to a gear shaft protruding from a speed reducer casing.
  • the present invention has been made in view of such circumstances, and an object thereof is to provide a technique for improving the cooling performance of the reduction gear.
  • An aspect of the present invention includes a rotating shaft protruding from a reduction gear casing, a first fan fixed to the rotating shaft, a second fan that generates an air flow that supports wind generated by the rotation of the first fan, It is a reduction gear provided with.
  • the cooling performance of the reduction gear can be improved.
  • FIG. 1 is a schematic plan view of a reduction gear according to a first embodiment of the present invention. It is a schematic plan view of the reduction gear which concerns on 2nd Embodiment of this invention. It is a schematic plan view of the reduction gear which concerns on 3rd Embodiment of this invention. It is a schematic plan view of the reduction gear which concerns on 4th Embodiment of this invention.
  • FIG. 1 is a schematic plan view of a reduction gear 110 according to a first embodiment of the present invention.
  • the air guide cover 40 described later is shown as a cross section when cut along a plane passing through the axis of the input shaft 12 and the output shaft 14 and parallel to the paper surface. Actually, the wind guide cover 40 covers up to the portion surrounded by the dotted line in the figure, and the inside thereof is not observed.
  • the reduction gear 110 has a parallel shaft type three-stage reduction mechanism using, for example, a helical gear, and is used by being connected to a motor (not shown).
  • the reduction mechanism is covered with a reduction gear casing 10.
  • Such a reduction mechanism is well known and will not be described in detail.
  • the input shaft 12 is formed longer than the lateral width of the speed reducer casing 10, and protrudes from both one side surface 10a of the speed reducer casing 10 and the other side surface 10b facing the same.
  • the side surface 10a side may be referred to as the input shaft 12a and the other side surface 10b side may be referred to as the input shaft 12b.
  • the input shaft 12 rotates at a higher speed than the output shaft 14, so the heat generation of the speed reduction mechanism on the input shaft 12 side increases and the temperature rises.
  • a bearing (not shown) that supports and rotates the input shaft 12 becomes hot, it is difficult to form an oil film with lubricating oil between the inner and outer rings of the bearing and the rolling elements, so that the life of the bearing is reduced or the bearing is damaged. There is a risk of doing.
  • a cooling radial fan (first fan) 20 is fixed to the input shaft 12a protruding from the side surface 10a side of the speed reducer casing 10.
  • the “radial fan” is a fan that generates air toward the radially outer side of the fan when the fan rotates.
  • the shape of the fan may be arbitrary.
  • the wind guide cover 40 for guiding the wind generated by the radial fan 20 to the other three side surfaces 10b to 10d and the bottom surface 10e covering the periphery of the input shaft 12 is provided in the speed reducer casing 10. Is provided.
  • the air guide cover 40 is shaped to cover the radial outside of the radial fan 20, a part of the side surfaces 10a to 10d of the reduction gear casing 10, and the bottom surface 10e, and the side surfaces 10a to 10d and the bottom surface 10e of the reduction gear casing 10.
  • An air passage 41 is formed between the air guide cover 40 and the air guide cover 40.
  • an axial fan (second fan) 30 is further provided.
  • the axial fan 30 is fixed to the input shaft 12a outside the radial fan 20. That is, the radial fan 20 is disposed between the one side surface 10 a and the axial fan 30.
  • an “axial fan” is a fan that generates air toward the rotation axis of the fan when the fan rotates, and the shape of the fan may be arbitrary.
  • the outer diameter of the axial fan 30 is preferably slightly larger than that of the radial fan 20. Further, the air volume generated by the axial fan 30 may be smaller than the air volume generated by the radial fan 20.
  • the axial fan 30 rotates simultaneously with the radial fan 20 when the input shaft 12 rotates. At this time, an axial air flow is generated downward in the figure toward the one side surface 10a of the reduction gear casing 10 by the axial fan 30 (see the black arrow in the figure). This downward air flow serves to push the wind generated by the radial fan 20 into the air passage 41 formed by the air guide cover 40. As a result, the flow rate of air guided to the air passage 41 is increased as compared to when the axial fan 30 is not installed, so that the cooling performance of the reduction gear casing 10 is increased.
  • a part of the wind guide cover 40 has an extended portion 40 a that extends so as to cover the side surface of the axial fan 30.
  • this extended portion 40 a most of the air flow generated by the axial fan 30 can be guided to the radial fan 20 without escaping outside the cover.
  • the gap 35 formed between the outer edge of the axial fan 30 and the air guide cover 40 is as small as possible. Thereby, the air flow flowing out from the inside of the air guide cover 40 to the outside can be reduced, and more air flow can be pushed into the air passage 41.
  • FIG. 2 is a schematic plan view of the speed reducer 120 according to the second embodiment of the present invention. As in FIG. 1, the cross section of the air guide cover 42 is shown.
  • the reduction gear 120 according to the second embodiment is the reduction gear 110 according to the first embodiment with respect to the reduction gear casing 10, the internal reduction mechanism portion, and the radial fan (first fan) 20 fixed to the input shaft 12a. It is the same.
  • the axial fan (second fan) 30 is fixed to the input shaft 12b on the other side 10b side of the speed reducer casing 10 on the side opposite to the radial fan 20.
  • the outer diameter of the axial fan 30 may be smaller than that of the radial fan 20, and the air volume generated by the axial fan 30 may be smaller than the air volume generated by the radial fan 20.
  • the wind guide cover 42 includes an extending portion 42 a that extends to cover the upper side (back side) of the radial fan 20 in addition to the radial direction outer side of the radial fan 20.
  • the air guide cover 42 includes a bent portion 42 b that covers the radially outer side of the axial fan 30 on the other side surface 10 b side and is bent toward the casing so as to be close to the outer edge of the axial fan 30.
  • the gap 37 formed between the outer edge of the axial fan 30 and the bent portion 42b of the air guide cover 42 is preferably as small as possible. Thereby, the airflow which flows in from the outside to the inside of the air guide cover 42 can be reduced, and a larger amount of airflow can be drawn from the inside of the air passage 41.
  • FIG. 3 is a schematic plan view of a reduction gear 130 according to a third embodiment of the present invention. Similar to FIGS. 1 and 2, the cross section of the air guide cover 44 is shown.
  • the third embodiment corresponds to a combination of the first and second embodiments. That is, in the speed reducer 130 according to the third embodiment, an axial fan (second fan) 30 is provided on the input shaft 12 a on the outer side of the radial fan (first fan) 20, and on the side opposite to the radial fan 20. Another axial fan (third fan) 32 is provided on the input shaft 12b on the other side surface 10b side of the speed reducer casing 10. The outer diameter of the axial fan 32 on the other side surface 10b may be smaller than that of the axial fan 30 on the one side surface 10a side.
  • the wind guide cover 44 includes an extending portion 44a that extends to the radially outer side of the axial fan 30 on the side surface 10a side.
  • the air guide cover 44 includes a bent portion 44 b that covers the radially outer side of the axial fan 32 on the other side surface 10 b side and is bent toward the casing so as to be close to the outer edge of the axial fan 32.
  • the air flow generated by the axial fan 30 pushes the wind generated by the radial fan 20 into the air passage 41 formed by the air guide cover 40, and the air in the air passage 41 is drawn toward the axial fan 32 (see FIG. (See the white arrow in 3).
  • the air flow rate guided into the air passage 41 is further increased than in the first and second embodiments by the action of both pushing from the inlet side and drawing from the outlet side.
  • the cooling performance of 10 is further increased.
  • the gap 39 formed between the outer edge of the axial fan 32 and the bent portion 44b of the air guide cover 44 is preferably as small as possible. As a result, the airflow flowing in from the outside to the inside of the air guide cover 44 can be reduced, and more airflow can be drawn out from the inside of the air passage 41.
  • FIG. 4 is a schematic plan view of a reduction gear 140 according to the fourth embodiment of the present invention. As in FIGS. 1 to 3, the cross section of the air guide cover 44 is shown.
  • the reduction gear 140 according to the fourth embodiment corresponds to a configuration in which the radial fan 20 is removed from the reduction gear 130 according to the third embodiment. Even if the radial fan 20 is not provided, the air flow is pushed into the air passage 41 by the axial fan (first fan) 30 on the one side surface 10a, and the wind by the axial fan (second fan) 32 on the other side surface 10b side. With the action of both the withdrawal of the air flow from the passage 41, it is possible to guide a sufficient amount of air flow into the air passage 41 to cool the casing.
  • the distance between the axial fan 30 and the one side surface 10a is larger than the distance between the axial fan 32 and the other side surface 10b. This is because the downward air flow generated in the figure generated by the axial fan 30 does not immediately collide with the one side surface 10a, and the air flow is smoothly guided into the air passage 41. Further, the outer diameter of the axial fan 32 on the other side surface 10b side may be smaller than that of the axial fan 30 on the one side surface 10a side.
  • the air flow generated by the second fan supports the wind generated by the first fan so as to hit the side surface of the speed reducer casing.
  • the flow rate increases and the cooling performance of the casing increases.
  • the present invention has been described using a reduction gear having a parallel shaft type three-stage reduction mechanism using a helical gear.
  • the present invention can be applied to any type of speed reducer.
  • the present invention can be applied even to an orthogonal reduction device in which an input shaft and an output shaft are orthogonal.
  • the radial fan and the axial fan are fixed to the input shaft.
  • the rotating shaft to which the fan is fixed is not limited to the input shaft.
  • one of the radial fan and the axial fan is used for the output shaft. Or both may be fixed.
  • one or both of the radial fan and the axial fan may be fixed to this shaft.
  • the present invention is not limited to this, and the second fan and the third fan. Is not necessarily fixed to the input shaft 12.
  • the second fan may be provided on the motor shaft connected to the input shaft 12.
  • the third fan arranged on the other side surface 10b side is an axial fan, but it may be a radial fan.
  • the air passage 41 extending in the axial direction of the input shaft 12 is formed between the side surfaces 10c and 10d and the bottom surface 10e of the casing. It is not necessary to form the air path 41 between the wind cover and the air path 41 may be formed only between the bottom surface 10e, for example.
  • reducer casing 12 (12a, 12b) input shaft (rotary shaft), 14 output shaft, 20 radial fan, 30, 32 axial fan, 40, 42, 44 wind guide cover, 110, 120, 130, 140 reducer .
  • the cooling performance of the reduction gear can be improved.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

L'invention a trait à un réducteur (110) qui comprend un arbre d'entrée (12) en saillie par rapport au corps (10) dudit réducteur, un premier ventilateur (20) fixé audit arbre d'entrée (12), et un second ventilateur (30) servant à générer un courant d'air afin de soutenir l'écoulement d'air provoqué par la rotation du premier ventilateur (20).
PCT/JP2013/007161 2013-03-29 2013-12-05 Réducteur Ceased WO2014155452A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201380073022.4A CN104995436A (zh) 2013-03-29 2013-12-05 减速机

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013072111A JP2014196768A (ja) 2013-03-29 2013-03-29 減速機
JP2013-072111 2013-03-29

Publications (1)

Publication Number Publication Date
WO2014155452A1 true WO2014155452A1 (fr) 2014-10-02

Family

ID=51622551

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/007161 Ceased WO2014155452A1 (fr) 2013-03-29 2013-12-05 Réducteur

Country Status (3)

Country Link
JP (1) JP2014196768A (fr)
CN (1) CN104995436A (fr)
WO (1) WO2014155452A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160312877A1 (en) * 2015-04-23 2016-10-27 Siemens Aktiengesellschaft Gearset with an air-guiding cover
EP3576263A1 (fr) * 2018-05-31 2019-12-04 ABB Schweiz AG Machine et système de boîte de vitesses à refroidissement par air
US20220397190A1 (en) * 2021-06-15 2022-12-15 Dana Motion Systems Deutschland GmbH Fan cover assembly for a gearbox, method for producing same, assembly and a modular set

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6403623B2 (ja) * 2015-03-31 2018-10-10 住友重機械工業株式会社 減速装置
CN105909772A (zh) * 2016-06-22 2016-08-31 安徽松科信息科技有限公司 一种工业机器人用减速机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63139357U (fr) * 1987-03-04 1988-09-13
JPH07332473A (ja) * 1994-06-08 1995-12-22 Kubota Corp ベルト無段変速装置の冷却構造
JPH09140095A (ja) * 1995-11-15 1997-05-27 Shibaura Eng Works Co Ltd 手持形ディスクグラインダ
JP2011021755A (ja) * 2010-10-14 2011-02-03 Sumitomo Heavy Ind Ltd 減速機

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009014316B4 (de) * 2009-03-25 2019-03-14 Sew-Eurodrive Gmbh & Co Kg Getriebe
US9599406B2 (en) * 2010-01-27 2017-03-21 Rexnord Industries, Llc Transmission having a fluid cooling shroud
US8517672B2 (en) * 2010-02-23 2013-08-27 General Electric Company Epicyclic gearbox

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63139357U (fr) * 1987-03-04 1988-09-13
JPH07332473A (ja) * 1994-06-08 1995-12-22 Kubota Corp ベルト無段変速装置の冷却構造
JPH09140095A (ja) * 1995-11-15 1997-05-27 Shibaura Eng Works Co Ltd 手持形ディスクグラインダ
JP2011021755A (ja) * 2010-10-14 2011-02-03 Sumitomo Heavy Ind Ltd 減速機

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160312877A1 (en) * 2015-04-23 2016-10-27 Siemens Aktiengesellschaft Gearset with an air-guiding cover
US9951859B2 (en) * 2015-04-23 2018-04-24 Flender Gmbh Gearset with an air-guiding cover
EP3576263A1 (fr) * 2018-05-31 2019-12-04 ABB Schweiz AG Machine et système de boîte de vitesses à refroidissement par air
US10578205B2 (en) 2018-05-31 2020-03-03 Abb Schweiz Ag Machine and gearbox system with air cooling
US20220397190A1 (en) * 2021-06-15 2022-12-15 Dana Motion Systems Deutschland GmbH Fan cover assembly for a gearbox, method for producing same, assembly and a modular set
US11808343B2 (en) * 2021-06-15 2023-11-07 Dana Motion Systems Deutschland GmbH Fan cover assembly for a gearbox, method for producing same, assembly and a modular set

Also Published As

Publication number Publication date
JP2014196768A (ja) 2014-10-16
CN104995436A (zh) 2015-10-21

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