JP6143513B2 - Gear device - Google Patents

Gear device Download PDF

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JP6143513B2
JP6143513B2 JP2013062072A JP2013062072A JP6143513B2 JP 6143513 B2 JP6143513 B2 JP 6143513B2 JP 2013062072 A JP2013062072 A JP 2013062072A JP 2013062072 A JP2013062072 A JP 2013062072A JP 6143513 B2 JP6143513 B2 JP 6143513B2
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magnet
gear
adsorbent
gear device
lubricating oil
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JP2014185730A (en
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料久 阿部
料久 阿部
久保　愛三
愛三 久保
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Sumitomo Heavy Industries Ltd
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Sumitomo Heavy Industries Ltd
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Priority to JP2013062072A priority Critical patent/JP6143513B2/en
Priority to KR1020157022283A priority patent/KR101745560B1/en
Priority to DE112014001626.8T priority patent/DE112014001626B4/en
Priority to PCT/JP2014/000224 priority patent/WO2014155907A1/en
Priority to CN201480008642.4A priority patent/CN105074284B/en
Publication of JP2014185730A publication Critical patent/JP2014185730A/en
Priority to US14/850,987 priority patent/US10174829B2/en
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Description

本発明は、減速機等として使用される歯車装置に関する。   The present invention relates to a gear device used as a reduction gear or the like.

減速機等の歯車装置では、歯車の動作に伴う歯車、軸受の損傷を防止するため、歯車等の潤滑、冷却が必要となる。このため、ケーシングの内部に潤滑油を貯め、歯車の回転により軸受に潤滑油を跳ねかける方法や、ポンプにより歯車、軸受に潤滑油を給油する方法が知られている（特許文献１参照）。   In a gear device such as a speed reducer, lubrication and cooling of the gears and the like are necessary to prevent damage to the gears and bearings accompanying the operation of the gears. For this reason, a method of storing lubricating oil in the casing and splashing the lubricating oil on the bearing by rotation of the gear, and a method of supplying the lubricating oil to the gear and the bearing by a pump are known (see Patent Document 1).

特開２０００−２６６１６８号JP 2000-266168 A

歯車装置内には、摩耗により鉄粉等の異物が生じる。異物は潤滑油に混ざって歯車や軸受にまで拡散し、一部はそれらに付着する。これは歯車や軸受に噛み込まれて歯車や軸受を損傷させたり、軸受の抵抗となるため、捕捉および除去が必要となる。潤滑油の流路にフィルタを設けてもよいが、フィルタは、微細な異物まで捕捉しようとすると潤滑油の流れを阻害するおそれがある。また、捕捉した異物をメンテナンス時の洗浄作業により除去する必要があり、メンテナンス性に劣る。   In the gear device, foreign matter such as iron powder is generated due to wear. The foreign matter is mixed with the lubricating oil and diffuses to the gears and bearings, and a part of them adheres to them. This is caught in the gear or the bearing and damages the gear or the bearing, or becomes a resistance of the bearing, and therefore needs to be captured and removed. Although a filter may be provided in the flow path of the lubricating oil, the filter may hinder the flow of the lubricating oil when trying to capture even fine foreign matter. Moreover, it is necessary to remove the trapped foreign matter by a cleaning operation at the time of maintenance, resulting in poor maintainability.

本発明は、こうした状況に鑑みてなされたものであり、その目的は、微細な異物の捕捉が可能で、捕捉した異物の除去時のメンテナンス性に優れた歯車装置を提供することにある。   The present invention has been made in view of such circumstances, and an object of the present invention is to provide a gear device that can capture fine foreign matters and is excellent in maintainability when removing the captured foreign matters.

本発明のある態様は歯車装置に関する。歯車装置は、潤滑油によって歯車の潤滑が行われる歯車装置であって、潤滑油中の異物を吸着するための吸着体を備え、吸着体は、磁石と、磁石を覆う非磁性カバーとを有する。   One embodiment of the present invention relates to a gear device. The gear device is a gear device in which a gear is lubricated by lubricating oil, and includes an adsorbing body for adsorbing foreign matter in the lubricating oil, and the adsorbing body includes a magnet and a nonmagnetic cover that covers the magnet. .

本発明のある態様の歯車装置によれば、非磁性カバーから磁石を取り出せば、非磁性カバーの表面に吸着された異物を簡単に除去でき、メンテナンス性に優れる。また、磁石により異物を吸着するので、細かい異物の捕捉も可能となる。   According to the gear device of an aspect of the present invention, if the magnet is taken out from the nonmagnetic cover, the foreign matter adsorbed on the surface of the nonmagnetic cover can be easily removed, and the maintainability is excellent. In addition, since foreign matter is adsorbed by a magnet, fine foreign matter can be captured.

第１実施形態に係る歯車装置の構成を示す正面断面図である。It is front sectional drawing which shows the structure of the gear apparatus which concerns on 1st Embodiment. 第１変形例としての吸着体の構造を示す正面図である。It is a front view which shows the structure of the adsorption body as a 1st modification. （ａ）は第２変形例としての吸着体の構造を示す正面断面図であり、（ｂ）はその平面図であり、（ｃ）は第３変形例としての吸着体の構造を示す正面断面図であり、（ｄ）はその平面図である。(A) is front sectional drawing which shows the structure of the adsorption body as a 2nd modification, (b) is the top view, (c) is front sectional drawing which shows the structure of the adsorption body as a 3rd modification. It is a figure and (d) is the top view. 第２実施形態に係る歯車装置の構成を示す正面断面図である。It is front sectional drawing which shows the structure of the gear apparatus which concerns on 2nd Embodiment. 第２実施形態に係る歯車装置の構成を示す部分側面断面図である。It is a fragmentary sectional side view which shows the structure of the gear apparatus which concerns on 2nd Embodiment. 第３実施形態に係る吸着体の構成を示す部分断面図である。It is a fragmentary sectional view which shows the structure of the adsorption body which concerns on 3rd Embodiment. 第４実施形態に係る歯車装置の構成を示すブロック図である。It is a block diagram which shows the structure of the gear apparatus which concerns on 4th Embodiment.

（第１実施形態）
図１は、第１実施形態に係る歯車装置１０の構成を示す。歯車装置１０は、平行軸歯車減速機であり、ケーシング１１、吸着体３１、支持部材４１を備える。ケーシング１１は、複数の歯車１３ａ〜１３ｆを収容する。歯車装置１０には、ケーシング１１内に潤滑油１５が貯められ、複数の歯車１３ａ〜１３ｆは潤滑油１５に一部が漬かって設置される。 (First embodiment)
FIG. 1 shows a configuration of a gear device 10 according to the first embodiment. The gear device 10 is a parallel shaft gear reducer, and includes a casing 11, an adsorbent 31, and a support member 41. The casing 11 accommodates a plurality of gears 13a to 13f. In the gear device 10, the lubricating oil 15 is stored in the casing 11, and the plurality of gears 13 a to 13 f are installed by being partially immersed in the lubricating oil 15.

ケーシング１１内には、入力軸１７ａ、第１歯車軸１７ｂ、第２歯車軸１７ｃ、出力軸１７ｄが平行に設けられ、これら軸１７ａ〜１７ｄは、ケーシング１１に軸受（図示せず）を介して回転自在に支持される。ケーシング１１には、内部を点検するための第１点検口１９が設けられる。第１点検口１９は第１蓋部材２１により開閉され、第１蓋部材２１はケーシング１１にねじ等で着脱可能に取り付けられる。   In the casing 11, an input shaft 17a, a first gear shaft 17b, a second gear shaft 17c, and an output shaft 17d are provided in parallel. These shafts 17a to 17d are connected to the casing 11 via bearings (not shown). It is supported rotatably. The casing 11 is provided with a first inspection port 19 for inspecting the inside. The first inspection port 19 is opened and closed by a first lid member 21, and the first lid member 21 is detachably attached to the casing 11 with a screw or the like.

入力軸１７ａは、モータ（図示せず）に連結される。入力軸１７ａには入力歯車１３ａが固定され、第１歯車軸１７ｂには第１大径歯車１３ｂと第１小径歯車１３ｃが固定される。第２歯車軸１７ｃには第２大径歯車１３ｄと第２小径歯車１３ｅとが固定され、出力軸１７ｄには出力歯車１３ｆが固定される。これら軸１７ａ〜１７ｄは、各歯車１３ａ〜１３ｆが噛み合っており、モータの駆動により入力軸１７ａが回転すると、その回転が減速されて出力軸１７ｄに伝達される。このとき、歯車１３ａ〜１３ｆの回転により歯車１３ａ〜１３ｆの各部位に潤滑油１５が供給され、歯車１３ａ〜１３ｆの潤滑が行われる。   The input shaft 17a is connected to a motor (not shown). An input gear 13a is fixed to the input shaft 17a, and a first large-diameter gear 13b and a first small-diameter gear 13c are fixed to the first gear shaft 17b. A second large-diameter gear 13d and a second small-diameter gear 13e are fixed to the second gear shaft 17c, and an output gear 13f is fixed to the output shaft 17d. The shafts 17a to 17d are engaged with the gears 13a to 13f. When the input shaft 17a is rotated by driving the motor, the rotation is decelerated and transmitted to the output shaft 17d. At this time, the lubricating oil 15 is supplied to each part of the gears 13a to 13f by the rotation of the gears 13a to 13f, and the gears 13a to 13f are lubricated.

吸着体３１は、ケーシング１１の内底面１１ａから離れて潤滑油１５中に設置される（吸着体３１と内底面１１ａが接していてもよい）。吸着体３１は、磁石３３、非磁性カバー３５を備える。磁石３３は、柱状に形成され、フェライト磁石やネオジウム磁石等の永久磁石で構成される。   The adsorbent 31 is installed in the lubricating oil 15 apart from the inner bottom surface 11a of the casing 11 (the adsorbent 31 and the inner bottom surface 11a may be in contact with each other). The attracting body 31 includes a magnet 33 and a nonmagnetic cover 35. The magnet 33 is formed in a columnar shape and is composed of a permanent magnet such as a ferrite magnet or a neodymium magnet.

非磁性カバー３５は、筒状の胴部３５ａと、胴部３５ａの両側の底部３５ｂ及び頂部３５ｃとを備える。非磁性カバー３５は、プラスチック等の非磁性材料で構成される。非磁性カバー３５は、磁石３３の外面全体を覆う。非磁性カバー３５は、その外周に沿ったリング状の溝部３７が上下に並んで形成される。溝部３７は、胴部３５ａの周方向全周に沿っている。つまり、非磁性カバー３５は、大径のリング部と小径のリング部とが交互に配置された形状とされている。   The nonmagnetic cover 35 includes a cylindrical body part 35a, and a bottom part 35b and a top part 35c on both sides of the body part 35a. The nonmagnetic cover 35 is made of a nonmagnetic material such as plastic. The nonmagnetic cover 35 covers the entire outer surface of the magnet 33. The non-magnetic cover 35 is formed with ring-shaped grooves 37 along the outer periphery thereof arranged vertically. The groove portion 37 extends along the entire circumference in the circumferential direction of the body portion 35a. That is, the nonmagnetic cover 35 has a shape in which large-diameter ring portions and small-diameter ring portions are alternately arranged.

図１に戻り、吸着体３１は、その近傍の異物５１を磁石３３により吸引する。異物５１は、摩耗により生じた鉄粉等の金属粉や金属破片である。異物５１は、潤滑油１５中に混入しており、歯車１３ａ〜１３ｆの動作により潤滑油１５に流れが生じることで、その一部が吸着体３１の近傍まで運ばれる。磁石３３に吸引された異物５１は、非磁性カバー３５の表面に吸着し、一部は溝部３７内に保持される。磁石３３は、異物５１を吸引しつつ、歯車１３ａ〜１３ｆ等の各部品を磁化しない程度の磁界を有するように構成される。   Returning to FIG. 1, the adsorbent 31 attracts the foreign matter 51 in the vicinity thereof by the magnet 33. The foreign matter 51 is metal powder such as iron powder or metal fragments generated by wear. The foreign matter 51 is mixed in the lubricating oil 15, and a part of the foreign matter 51 is carried to the vicinity of the adsorbent 31 by the flow of the lubricating oil 15 caused by the operation of the gears 13 a to 13 f. The foreign matter 51 attracted by the magnet 33 is attracted to the surface of the nonmagnetic cover 35 and a part thereof is held in the groove portion 37. The magnet 33 is configured to have a magnetic field that does not magnetize each component such as the gears 13 a to 13 f while attracting the foreign matter 51.

支持部材４１は、棒状の連結部４３と、取付部４５と、固定部４７とを備える。支持部材４１は非磁性材料または弱磁性材料で構成される。取付部４５は、連結部４３の一端側に形成された雄ねじである。磁石３３には雌ねじ孔３３ａが形成される。取付部４５は、非磁性カバー３５に形成された貫通孔３５ｄを通して雌ねじ孔３３ａにねじ込まれる。すなわち、取付部４５には、吸着体３１を着脱可能に取り付ける。   The support member 41 includes a rod-shaped connecting portion 43, an attachment portion 45, and a fixing portion 47. The support member 41 is made of a nonmagnetic material or a weak magnetic material. The attachment portion 45 is a male screw formed on one end side of the connecting portion 43. The magnet 33 is formed with a female screw hole 33a. The attachment portion 45 is screwed into the female screw hole 33a through a through hole 35d formed in the nonmagnetic cover 35. That is, the adsorbent 31 is detachably attached to the attachment portion 45.

固定部４７は、連結部４３の他端側が接続される。固定部４７は、第１蓋部材２１の背面にねじ等で着脱可能に固定された板状部材４７ａを含む。固定部４７は、潤滑油１５外で第１蓋部材２１を介してケーシング１１に固定され、吸着体３１は、支持部材４１により支持されて潤滑油１５中に位置決めされる。第１蓋部材２１のねじ等を外せば、第１蓋部材２１を作業員が把持して、吸着体３１を潤滑油１５外に取り出せる。   The other end side of the connecting portion 43 is connected to the fixing portion 47. The fixing portion 47 includes a plate-like member 47a that is detachably fixed to the back surface of the first lid member 21 with a screw or the like. The fixing part 47 is fixed to the casing 11 through the first lid member 21 outside the lubricating oil 15, and the adsorbent 31 is supported by the support member 41 and positioned in the lubricating oil 15. When the screw or the like of the first lid member 21 is removed, the operator can grasp the first lid member 21 and take out the adsorbent 31 out of the lubricating oil 15.

連結部４３と固定部４７の接続箇所には板状のリブ４９が設けられる。支持部材４１は、自由端側で吸着体３１を支持している。歯車１３ａ〜１３ｆの動作により潤滑油１５に流れが生じることで、吸着体３１を変位させる力が働き、固定端である連結部４３と固定部４７の接続箇所に負荷が作用する。支持部材４１は、この負荷にリブ４９で抵抗でき、その接続箇所が高剛性化する。   A plate-like rib 49 is provided at a connection location between the connecting portion 43 and the fixing portion 47. The support member 41 supports the adsorbent 31 on the free end side. A flow is generated in the lubricating oil 15 by the operation of the gears 13a to 13f, so that a force for displacing the adsorbent 31 works, and a load acts on a connection portion between the connecting portion 43 and the fixing portion 47 which are fixed ends. The support member 41 can resist this load with the rib 49, and the connecting portion thereof becomes highly rigid.

第１実施形態に係る歯車装置１０によれば、非磁性カバー３５が磁石３３を覆うため、非磁性カバー３５から磁石３３を取り出せば、非磁性カバー３５外の異物５１に磁力が作用しなくなる。このため、非磁性カバー３５の表面を払う等して、その表面に吸着した異物５１を簡単に除去でき、メンテナンス性に優れる。また、磁石３３により異物５１を吸着するので、細かい異物５１の捕捉も可能で、潤滑油１５の流れを阻害することもほとんどない。また、非磁性カバー３５が磁石３３を覆うため、磁石３３より非磁性カバー３５の表面積が大きくなり、異物５１の吸着量が増大する。特に、溝部３７が形成されることで非磁性カバー３５の表面積がさらに増大するため、異物５１の吸着量がさらに増大する。また、非磁性カバー３５に溝部３７が形成されるため、溝部３７が上下に並ぶように吸着体３１を配置すれば、溝部３７の壁面に異物が引っかかることで吸着量がさらに増大する。   According to the gear device 10 according to the first embodiment, since the nonmagnetic cover 35 covers the magnet 33, if the magnet 33 is taken out from the nonmagnetic cover 35, no magnetic force acts on the foreign matter 51 outside the nonmagnetic cover 35. For this reason, the foreign matter 51 adsorbed on the surface of the nonmagnetic cover 35 can be easily removed by, for example, removing the surface of the nonmagnetic cover 35, and the maintenance is excellent. Further, since the foreign substance 51 is attracted by the magnet 33, the fine foreign substance 51 can be captured and the flow of the lubricating oil 15 is hardly obstructed. Further, since the nonmagnetic cover 35 covers the magnet 33, the surface area of the nonmagnetic cover 35 is larger than that of the magnet 33, and the amount of adsorption of the foreign matter 51 is increased. In particular, since the surface area of the nonmagnetic cover 35 is further increased by forming the groove portion 37, the amount of adsorption of the foreign matter 51 is further increased. Moreover, since the groove part 37 is formed in the nonmagnetic cover 35, if the adsorption body 31 is arranged so that the groove part 37 is arranged vertically, the amount of adsorption is further increased due to the foreign matter caught on the wall surface of the groove part 37.

また、支持部材４１の固定部４７が潤滑油１５外に固定されるため、作業員が潤滑油１５中に手をいれず、固定部４７を把持して吸着体３１を取り出せる。特に、固定部４７が第１蓋部材２１に固定されるため、ケーシング１１の内部の点検等で第１蓋部材２１を取り外すとき、あわせて吸着体３１をケーシング１１外に取り出せる。このため、ケーシング１１内の点検とともに、吸着体３１への異物５１の吸着状況を容易に確認できる。   Further, since the fixing portion 47 of the support member 41 is fixed outside the lubricating oil 15, an operator can grasp the fixing portion 47 and take out the adsorbent 31 without putting his hands in the lubricating oil 15. In particular, since the fixing portion 47 is fixed to the first lid member 21, when removing the first lid member 21 for inspection inside the casing 11, the adsorbent 31 can be taken out of the casing 11 together. For this reason, the inspection of the inside of the casing 11 and the adsorption state of the foreign matter 51 to the adsorbent 31 can be easily confirmed.

また、非磁性カバー３５により磁石３３の外面全体が覆われるため、ケーシング１１内に吸着体３１がある間、磁石３３に異物５１が直接吸着しなくなる。このため、非磁性カバー３５から磁石３３を取り出すとき、非磁性カバー３５の表面の異物５１が磁石３３に付着しないように除去すれば、磁石３３の表面から異物５１を除去する手間が抑えられる。   Further, since the entire outer surface of the magnet 33 is covered by the nonmagnetic cover 35, the foreign matter 51 is not directly attracted to the magnet 33 while the attracting body 31 is in the casing 11. For this reason, when removing the magnet 33 from the nonmagnetic cover 35, if the foreign matter 51 on the surface of the nonmagnetic cover 35 is removed so that it does not adhere to the magnet 33, the trouble of removing the foreign matter 51 from the surface of the magnet 33 can be reduced.

図２は、第１変形例としての吸着体３１の構造を示す。本変形例の吸着体３１は、支持部材４１の下端に支持された磁石３３と、磁石３３を覆う非磁性カバー３５を有する。磁石３３は、棒状に形成され、その長手方向が支持部材４１の長手方向と直交するように支持される。また、磁石３３は、その長手方向の一端側がＮ極、他端側がＳ極とされる。   FIG. 2 shows the structure of the adsorbent 31 as a first modification. The adsorbent 31 of this modification has a magnet 33 supported on the lower end of the support member 41 and a nonmagnetic cover 35 that covers the magnet 33. The magnet 33 is formed in a rod shape and is supported such that its longitudinal direction is orthogonal to the longitudinal direction of the support member 41. The magnet 33 has an N pole on one end side in the longitudinal direction and an S pole on the other end side.

非磁性カバー３５は、薄いプラスチックフィルムにより構成され、磁石３３の全体を覆うとともに、支持部材４１の下端部を覆っている。プラスチックフィルム３５は、非磁性体または弱磁性体のひも状部材３８によって、磁石３３および支持部材４１に固定される。ひも状部材３８は、非磁性体のひもあるいは弱磁性体の針金により構成される。具体的には、プラスチックフィルム３５は、磁石３３の長手方向両端側の２箇所および支持部材の上下２箇所にひも状部材３８を巻きつけることにより固定されている。吸着体３１は、ひも状部材３８を取り外し、プラスチックフィルムにより構成される非磁性カバー３５を磁石３３から取り外すことにより、非磁性カバー３５から磁石３３を出し入れ可能となる。   The nonmagnetic cover 35 is made of a thin plastic film, covers the entire magnet 33, and covers the lower end portion of the support member 41. The plastic film 35 is fixed to the magnet 33 and the support member 41 by a non-magnetic or weak magnetic string member 38. The string-like member 38 is composed of a non-magnetic string or a weak-magnetic wire. Specifically, the plastic film 35 is fixed by winding a string-like member 38 around two places on both ends in the longitudinal direction of the magnet 33 and two places above and below the support member. The adsorber 31 can remove the string-like member 38 and remove the nonmagnetic cover 35 made of a plastic film from the magnet 33, whereby the magnet 33 can be taken in and out of the nonmagnetic cover 35.

本変形例においては、支持部材４１とともに吸着体３１を潤滑油１５中から取り出し、ひも状部材３８を取り外し、プラスチックフィルム３５を磁石３３から取り外すことにより、プラスチックフィルム３５表面に付着した鉄粉等の異物５１を容易に除去できる。ひも状部材３８を弱磁性体の針金で構成した場合、磁石３３に巻き付けているときには、針金自体も磁気を帯びて異物５１を吸着する。一方、針金３８を磁石３３から取り外すと、磁気を失うため、針金３８に付着した異物５１を容易に除去することができる。   In this modification, the adsorbent 31 together with the support member 41 is taken out from the lubricating oil 15, the string-like member 38 is removed, and the plastic film 35 is removed from the magnet 33, so that iron powder or the like attached to the surface of the plastic film 35 is removed. The foreign matter 51 can be easily removed. When the string-like member 38 is formed of a weak magnetic wire, the wire itself is magnetized and attracts the foreign matter 51 when it is wound around the magnet 33. On the other hand, when the wire 38 is removed from the magnet 33, the magnetism is lost, so that the foreign matter 51 attached to the wire 38 can be easily removed.

図３は、第２変形例、第３変形例としての吸着体３１の構造を示す。非磁性カバー３５や磁石３３は、図３（ａ）、（ｂ）に示すように、相似な外形の直方体状に形成されてもよい。この他に、これらの外形を相似な円形、台形等にしてもよい。なお、非磁性カバー３５と磁石３３は必ずしも密着している必要はなく、容易に分解可能な密封構造とされているのが好ましい。   FIG. 3 shows the structure of the adsorbent 31 as a second modification and a third modification. As shown in FIGS. 3A and 3B, the nonmagnetic cover 35 and the magnet 33 may be formed in a rectangular parallelepiped shape having a similar outer shape. In addition, these external shapes may be similar circles, trapezoids, or the like. The nonmagnetic cover 35 and the magnet 33 do not necessarily need to be in close contact with each other, and preferably have a sealed structure that can be easily disassembled.

また、図３（ｃ）、（ｄ）に示すように、非磁性カバー３５の表面に複数の凸部３５ｅが設けられてもよい。これにより、非磁性カバー３５と磁石３３は、非相似な外形となり、相似な外形とするより、非磁性カバー３５の表面積が増大し、異物５１の吸着量が増大する。非磁性カバー３５の表面積を増大させるため、その表面に複数の凹部を設けたり、複数の凸部と凹部を交互に設けて波状等にしてもよい。また、磁石３３の外形を直方体状にし、非磁性カバー３５の外形を円形、台形等にして、互いに非相似な外形としてもよい。   Further, as shown in FIGS. 3C and 3D, a plurality of convex portions 35 e may be provided on the surface of the nonmagnetic cover 35. As a result, the nonmagnetic cover 35 and the magnet 33 have a non-similar outer shape, and the surface area of the non-magnetic cover 35 increases and the amount of foreign matter 51 adsorbed increases as compared with the similar outer shape. In order to increase the surface area of the non-magnetic cover 35, a plurality of concave portions may be provided on the surface, or a plurality of convex portions and concave portions may be provided alternately so as to be wavy. Further, the outer shape of the magnet 33 may be a rectangular parallelepiped shape, and the outer shape of the nonmagnetic cover 35 may be a circular shape, a trapezoidal shape, or the like so as to have non-similar shapes.

（第２実施形態）
図４、図５は、第２実施形態に係る歯車装置１０の構成を示す。以下の実施形態では、第１実施形態で説明した要素と同一の要素に同一の符号を付し、重複する説明を省略する。歯車装置１０は、直交軸歯車減速機であり、入力軸１７ｅに固定された第１傘歯車１３ｈと、中間軸１７ｆに固定された第２傘歯車１３ｇとが噛み合う。以下、この中間軸１７ｆと平行な水平方向をＸ方向として説明する。 (Second Embodiment)
4 and 5 show a configuration of the gear device 10 according to the second embodiment. In the following embodiments, the same elements as those described in the first embodiment are denoted by the same reference numerals, and redundant descriptions are omitted. The gear device 10 is an orthogonal shaft gear reducer, and a first bevel gear 13h fixed to the input shaft 17e and a second bevel gear 13g fixed to the intermediate shaft 17f mesh with each other. Hereinafter, the horizontal direction parallel to the intermediate shaft 17f will be described as the X direction.

吸着体３１は、潤滑油１５中であって、入力軸１７ｅからＸ方向の一方寄りの第１位置Ａ１に設置される。図４では、この第１位置Ａ１を実線で示す。支持部材４１の連結部４３は、固定部４７の複数箇所に接続可能である。つまり、固定部４７は、吸着体３１（支持部材４１）を取り付けるための被取付部を複数有する。支持部材４１の接続箇所を変えたとき、吸着体３１は、入力軸１７ｅからＸ方向の他方寄りの第２位置Ａ２に設置される。図４では、この第２位置Ａ２を二点鎖線で示す。すなわち、吸着体３１は、ケーシング１１内の複数の位置Ａ１、Ａ２に設置可能とされる。   The adsorbent 31 is installed in the lubricating oil 15 at a first position A1 that is closer to the X direction from the input shaft 17e. In FIG. 4, the first position A1 is indicated by a solid line. The connecting portion 43 of the support member 41 can be connected to a plurality of locations of the fixing portion 47. That is, the fixing portion 47 has a plurality of attached portions for attaching the adsorbent 31 (support member 41). When the connection location of the support member 41 is changed, the adsorbent 31 is installed at the second position A2 closer to the other side in the X direction from the input shaft 17e. In FIG. 4, the second position A2 is indicated by a two-dot chain line. That is, the adsorbent 31 can be installed at a plurality of positions A1 and A2 in the casing 11.

第１傘歯車１３ｈおよび第２傘歯車１３ｇが回転したとき、第１傘歯車１３ｈおよび第２傘歯車１３ｇの潤滑油１５中の動きで生じる流れにより、異物５１が一部に多く集まる。この集まる位置は、第１傘歯車１３ｈの回転が正方向Ｐ１か逆方向Ｐ２かで異なる。吸着体３１の設置される第１位置Ａ１は、第１傘歯車１３ｈが正方向Ｐ１に回転したとき、第２位置Ａ２は、第１傘歯車１３ｈが逆方向Ｐ２に回転したとき、異物５１が多く集まる位置に設けられる。作業者は、第１傘歯車１３ｈの回転方向を予め把握し、複数の位置Ａ１、Ａ２のうち、異物５１が多く集まる位置に吸着体３１を設置する。   When the first bevel gear 13h and the second bevel gear 13g rotate, a large amount of foreign matter 51 gathers in part due to the flow generated by the movement of the first bevel gear 13h and the second bevel gear 13g in the lubricating oil 15. This gathering position differs depending on whether the rotation of the first bevel gear 13h is the forward direction P1 or the reverse direction P2. The first position A1 where the adsorbent 31 is installed is that the foreign object 51 is located when the first bevel gear 13h is rotated in the forward direction P1, and the second position A2 is when the first bevel gear 13h is rotated in the reverse direction P2. It is provided at a location where many people gather. The operator grasps in advance the rotation direction of the first bevel gear 13h, and installs the adsorbent 31 at a position where a large amount of foreign matter 51 gathers among the plurality of positions A1 and A2.

第２実施形態に係る歯車装置１０によれば、複数の位置Ａ１、Ａ２から選択して吸着体３１を設置できるため、第１傘歯車１３ｈの回転方向に応じて吸着体３１の設置位置を変えれば、異物５１を効果的に吸着できる。なお、位置Ａ１および位置Ａ２の両方に吸着体３１を設置してもよい。   According to the gear device 10 according to the second embodiment, since the adsorption body 31 can be installed by selecting from a plurality of positions A1 and A2, the installation position of the adsorption body 31 can be changed according to the rotation direction of the first bevel gear 13h. Thus, the foreign matter 51 can be effectively adsorbed. In addition, you may install the adsorption body 31 in both position A1 and position A2.

（第３実施形態）
図６は、第３実施形態に係る歯車装置１０の部分断面図を示す。ケーシング１１は、ドレン部２３、ドレンプラグ２５を更に備える。ドレン部２３は、ケーシング１１内の潤滑油１５を排出するために設けられる。 (Third embodiment)
FIG. 6 is a partial cross-sectional view of the gear device 10 according to the third embodiment. The casing 11 further includes a drain portion 23 and a drain plug 25. The drain part 23 is provided for discharging the lubricating oil 15 in the casing 11.

ドレンプラグ２５は、ドレン部２３に形成された雌ねじ孔２３ａにねじ込まれるねじ部２５ａを有する。すなわち、ドレンプラグ２５は、ドレン部２３に着脱可能に取り付けられる。ドレンプラグ２５は、軟鉄などの弱磁性体によって形成されており、磁石３３の磁力によりケーシング１１が磁化されるのを低減できる。また、ドレンプラグ２５の中央には貫通孔２５ｂが形成されている。貫通孔２５ｂの一端部、具体的にはケーシング１１側の端部には、非磁性カバー３５を着脱可能に装着する装着部２５ｃが設けられている。   The drain plug 25 has a screw portion 25 a that is screwed into a female screw hole 23 a formed in the drain portion 23. That is, the drain plug 25 is detachably attached to the drain portion 23. The drain plug 25 is made of a weak magnetic material such as soft iron, and can reduce the magnetization of the casing 11 due to the magnetic force of the magnet 33. A through hole 25 b is formed at the center of the drain plug 25. A mounting portion 25c for detachably mounting the nonmagnetic cover 35 is provided at one end of the through hole 25b, specifically, the end on the casing 11 side.

吸着体３１は、磁石３３と、磁石３３を覆うとともに、ドレンプラグ２５に装着される非磁性カバー３５と、を有する。磁石３３は、棒状とされ、その長手方向の一端側がＳ極、他端側がＮ極とされる。非磁性カバー３５は、ドレンプラグ２５の装着部２５ｃに装着される被装着部３５ｍと、被装着部３５ｍの一端部から形成され、磁石３３を収納する磁石収納部３５ｌとを有する。磁石収納部３５ｌが、潤滑油１５中に配置される。被装着部３５ｍの他端部側は開口とされ、当該開口から磁石収納部３５ｌへ磁石３３を組込み・取り出し可能とされている。被装着部３５ｍの開口は、蓋部材３５ｎにより閉塞される。吸着体３１は、蓋部材３５ｎを取り外すことで、非磁性カバー３５から磁石３３を出し入れ可能となる。   The adsorbent 31 includes a magnet 33 and a nonmagnetic cover 35 that covers the magnet 33 and is attached to the drain plug 25. The magnet 33 has a rod shape, and one end side in the longitudinal direction is an S pole and the other end side is an N pole. The nonmagnetic cover 35 includes a mounted portion 35m to be mounted on the mounting portion 25c of the drain plug 25, and a magnet storage portion 35l that is formed from one end of the mounted portion 35m and stores the magnet 33. A magnet storage portion 35 l is disposed in the lubricating oil 15. The other end portion side of the mounted portion 35m is an opening, and the magnet 33 can be incorporated into and taken out from the opening to the magnet storage portion 35l. The opening of the mounted portion 35m is closed by the lid member 35n. The adsorbent 31 can remove and insert the magnet 33 from the nonmagnetic cover 35 by removing the lid member 35n.

第３実施形態に係る歯車装置１０によれば、ドレンプラグ２５をケーシング１１から取り外すときに吸着体３１を取り出せ、潤滑油１５の排出とともに、吸着体３１への異物５１の吸着状況を確認できる。そして、ドレンプラグ２５をケーシング１１から取り外したときに、蓋部材３５ｎを取り外し、磁石３３を磁石収納部３５ｌから取り出すことで、磁石収納部３５ｌの外周面に付着した異物を容易に除去できる。   According to the gear device 10 according to the third embodiment, when the drain plug 25 is removed from the casing 11, the adsorbent 31 can be taken out, and the suction of the foreign matter 51 onto the adsorbent 31 can be confirmed along with the discharge of the lubricating oil 15. Then, when the drain plug 25 is removed from the casing 11, the lid member 35 n is removed, and the magnet 33 is taken out from the magnet storage part 35 l, whereby foreign matters attached to the outer peripheral surface of the magnet storage part 35 l can be easily removed.

（第４実施形態）
図７は、第４実施形態に係る歯車装置１０の構成を示す。歯車装置１０は、ドライサンプ用の循環流路６１を備える。循環流路６１の途中には、吸入路６３、オイルタンク６５、吐出路６７が順に設けられる。 (Fourth embodiment)
FIG. 7 shows a configuration of the gear device 10 according to the fourth embodiment. The gear device 10 includes a circulation passage 61 for dry sump. In the middle of the circulation flow path 61, a suction path 63, an oil tank 65, and a discharge path 67 are provided in this order.

吸入路６３の途中には、ポンプ６９、ストレーナ７１が順に設置される。循環流路６１は、ポンプ６９の駆動により、その循環流路６１中の潤滑油１５が強制的に移送される。これにより、循環流路６１は、ケーシング１１内に設けられた歯車収容室１１ｂから潤滑油１５を吸入し、吸入路６３、オイルタンク６５、吐出路６７を通して、再度歯車収容室１１ｂに潤滑油１５を排出する。なお、歯車収容室１１ｂは、ケーシング１１内で歯車１３ａ〜１３ｆを収容する空間である。   In the middle of the suction path 63, a pump 69 and a strainer 71 are installed in this order. The circulation passage 61 is forced to transfer the lubricating oil 15 in the circulation passage 61 by driving the pump 69. As a result, the circulation channel 61 sucks the lubricating oil 15 from the gear housing chamber 11 b provided in the casing 11, and again passes through the suction passage 63, the oil tank 65, and the discharge passage 67 to the gear housing chamber 11 b. Is discharged. The gear housing chamber 11 b is a space for housing the gears 13 a to 13 f in the casing 11.

ストレーナ７１は、吸入路６３を通過する異物５１を捕捉する。オイルタンク６５は、ケーシング１１の歯車収容室１１ｂと別体に設けられる。吸着体３１は、タンク６５内の内底面６５ａ上に設置される。吸着体３１は、ストレーナ７１により捕捉されずに流入する異物５１を吸着する。   The strainer 71 captures the foreign matter 51 that passes through the suction path 63. The oil tank 65 is provided separately from the gear housing chamber 11 b of the casing 11. The adsorbent 31 is installed on the inner bottom surface 65 a in the tank 65. The adsorbent 31 adsorbs the foreign matter 51 that flows in without being captured by the strainer 71.

第４実施形態に係る歯車装置１０によれば、吸着体３１が歯車収容室１１ｂから離れたオイルタンク６５内に設置されるため、歯車収容室１１ｂ内の歯車１３ａ〜１３ｆ等の動作が磁石３３により阻害されない。よって、吸引力の大きい磁石３３を使用でき、異物５１の吸着量が増大する。   According to the gear device 10 according to the fourth embodiment, since the adsorbent 31 is installed in the oil tank 65 separated from the gear housing chamber 11b, the operations of the gears 13a to 13f and the like in the gear housing chamber 11b are performed by the magnet 33. Is not hindered. Therefore, the magnet 33 having a large attractive force can be used, and the amount of adsorption of the foreign matter 51 is increased.

また、吸着体３１がオイルタンク６５内に設置されるため、吸入路６３、吐出路６７に設置するより、吸着体３１を大きくして異物５１の吸着量を増大できる。また、異物５１の捕捉を吸着体３１により行えるため、ドライサンプするうえでストレーナ７１を簡略化または省略できる。   Further, since the adsorbing body 31 is installed in the oil tank 65, the adsorbing body 31 can be enlarged and the amount of adsorption of the foreign matter 51 can be increased as compared with the case where it is installed in the suction path 63 and the discharge path 67. Further, since the foreign substance 51 can be captured by the adsorbent 31, the strainer 71 can be simplified or omitted when dry summing.

以上、実施の形態に基づき本発明を説明したが、実施の形態は、本発明の原理、応用を示しているにすぎない。また、実施の形態には、請求の範囲に規定された本発明の思想を逸脱しない範囲において、多くの変形例や配置の変更が可能である。   As mentioned above, although this invention was demonstrated based on embodiment, embodiment shows only the principle and application of this invention. In the embodiment, many modifications and arrangements can be made without departing from the spirit of the present invention defined in the claims.

上述の実施形態では、歯車装置１０として、平行軸歯車減速機や直交軸歯車減速機を説明したが、ケーシング１１内に歯車があれば、減速機構の種類は特に限定されず、例えば差動歯車機構でもよい。また、吸着体３１は、潤滑油１５中に設置される以外に、潤滑油１５の液面上に設けられた潤滑油通路上や、歯車により跳ねかけられる潤滑油の飛散箇所等の所定位置に設置されてもよい。また、吸着体３１は、循環流路６１中に設置する場合、オイルタンク６５以外の吸入路６３、吐出路６７に設置されてもよい。循環流路６１は、ケーシング１１内に歯車収容室１１ｂとは別に設けられてもよい。   In the above-described embodiment, the parallel shaft gear reducer and the orthogonal shaft gear reducer have been described as the gear device 10. However, if there is a gear in the casing 11, the type of the reduction mechanism is not particularly limited. It may be a mechanism. In addition to being installed in the lubricating oil 15, the adsorbent 31 is located at a predetermined position such as a lubricating oil passage provided on the liquid surface of the lubricating oil 15 or a location where the lubricating oil splashes by the gears. It may be installed. Further, when the adsorbent 31 is installed in the circulation channel 61, it may be installed in the suction path 63 and the discharge path 67 other than the oil tank 65. The circulation channel 61 may be provided in the casing 11 separately from the gear housing chamber 11b.

吸着体３１は、磁石３３を非磁性カバー３５から出し入れする構造については特に限定されない。たとえば、非磁性カバー３５を複数に分割できる構造とし、各分割部分をねじ等により着脱可能とし、磁石３３を出し入れしてもよい。また、複数に分割した非磁性カバー３５内に磁石３３を入れた後、各分割部分を熱溶着等により接合し、磁石３３を取り出すときに非磁性カバー３５を切断してもよい。   The adsorbent 31 is not particularly limited with respect to the structure in which the magnet 33 is taken in and out of the nonmagnetic cover 35. For example, the non-magnetic cover 35 may be divided into a plurality of parts, each divided part may be detachable with a screw or the like, and the magnet 33 may be taken in and out. Moreover, after putting the magnet 33 in the non-magnetic cover 35 divided | segmented into plurality, each division | segmentation part may be joined by heat welding etc., and when removing the magnet 33, the non-magnetic cover 35 may be cut | disconnected.

磁石３３は、永久磁石以外に電磁石が用いられてもよく、その材料は限定されない。非磁性カバー３５は、非磁性材料であれば、ポリカーボネート等の樹脂材料のように材料は限定されない。支持部材４１の取付部４５は、吸着体３１にねじ以外に接着等で取り付けられてもよいし、吸着体３１と一体に設けられてもよい。支持部材４１の固定部４７は、蓋部材２１を含まずにケーシング１１の内面等に固定されてもよい。   The magnet 33 may be an electromagnet other than a permanent magnet, and its material is not limited. The nonmagnetic cover 35 is not limited to a material such as a resin material such as polycarbonate as long as it is a nonmagnetic material. The attachment portion 45 of the support member 41 may be attached to the adsorbing body 31 by bonding or the like in addition to the screw, or may be provided integrally with the adsorbing body 31. The fixing portion 47 of the support member 41 may be fixed to the inner surface of the casing 11 without including the lid member 21.

また、上述の実施形態においては、吸着体３１が、支持部材４１により支持される場合、ドレンプラグ２５に固定される場合およびオイルタンク６５に配置される場合のいずれか１つのみが採用された形態を説明した。これらに限定されず、複数の配置形態を採用してもよいし、支持部材４１に支持された吸着体３１やドレンプラグ２５に固定された吸着体３１をオイルタンク６５に配置してもよい。   In the above-described embodiment, only one of the case where the adsorbent 31 is supported by the support member 41, the case where the adsorbent 31 is fixed to the drain plug 25, and the case where the adsorbent 31 is disposed in the oil tank 65 is employed. Explained the form. The arrangement is not limited to these, and a plurality of arrangement forms may be adopted, or the adsorbent 31 supported by the support member 41 or the adsorbent 31 fixed to the drain plug 25 may be arranged in the oil tank 65.

１０：歯車装置、１１：ケーシング、１１ｂ：歯車収容室、１５：潤滑油、２５：ドレンプラグ、３１：吸着体、３３：磁石、３５：非磁性カバー、３７：溝部、３９：切込部、４１：支持部材、５１：異物、６１：循環流路、６５：オイルタンク 10: gear device, 11: casing, 11b: gear housing chamber, 15: lubricating oil, 25: drain plug, 31: adsorbent, 33: magnet, 35: nonmagnetic cover, 37: groove, 39: notch, 41: support member, 51: foreign matter, 61: circulation flow path, 65: oil tank

Claims (12)

潤滑油によって歯車の潤滑が行われる歯車装置であって、
潤滑油中の異物を吸着するための吸着体を備え、
前記吸着体は、磁石と、前記磁石を覆う非磁性カバーとを有し、
前記非磁性カバーは、前記磁石の外面全体を覆うことを特徴とする歯車装置。 A gear device in which a gear is lubricated by lubricating oil,
With an adsorbent for adsorbing foreign matter in the lubricating oil,
The adsorbent may possess a magnet, and a non-magnetic cover covering said magnet,
The non-magnetic cover covers the entire outer surface of the magnet . 潤滑油によって歯車の潤滑が行われる歯車装置であって、  A gear device in which a gear is lubricated by lubricating oil,
潤滑油中の異物を吸着するための吸着体を備え、  With an adsorbent for adsorbing foreign matter in the lubricating oil,
前記吸着体は、磁石と、前記磁石を覆う非磁性カバーとを有し、  The adsorbent has a magnet and a nonmagnetic cover that covers the magnet,
前記非磁性カバーは、非磁性体または弱磁性体のひも状部材により前記磁石に固定されることを特徴とする歯車装置。  The gear device, wherein the non-magnetic cover is fixed to the magnet by a non-magnetic or weak magnetic string member. 当該歯車装置には潤滑油が貯められ、
前記吸着体を取り付ける取付部と、前記潤滑油外に固定された固定部と、を有する支持部材を更に備え、
前記吸着体は、前記支持部材により潤滑油中に位置決めされることを特徴とする請求項１または２に記載の歯車装置。 Lubricating oil is stored in the gear device,
A mounting member for attaching the adsorbent, and a fixing member fixed outside the lubricating oil;
The adsorber gear device according to claim 1 or 2, characterized in that it is positioned in the lubricating oil by the supporting member. 前記支持部材の固定部は、点検口を開閉する蓋部材に固定されることを特徴とする請求項３に記載の歯車装置。 The gear unit according to claim 3 , wherein the fixing portion of the support member is fixed to a lid member that opens and closes the inspection port. 前記吸着体は、ドレンプラグに固定されることを特徴とする請求項１から４のいずれかに記載の歯車装置。 The adsorber gear device according to claim 1, characterized in that fixed to the drain plug 4. 前記歯車を収容する歯車収容室から潤滑油を吸入して、当該歯車収容室に再度排出する循環流路を更に備え、
前記吸着体は、前記循環流路中に設置されることを特徴とする請求項１から５のいずれかに記載の歯車装置。 A circulation channel for sucking lubricating oil from the gear housing chamber housing the gear and discharging it again to the gear housing chamber;
The adsorber gear device according to any one of claims 1 to 5, characterized in that it is installed in the circulation passage. 前記循環流路の途中に前記歯車収容室と別体に設けられたオイルタンクを更に備え、
前記吸着体は、前記オイルタンク内に設置されることを特徴とする請求項６に記載の歯車装置。 An oil tank provided separately from the gear housing chamber in the middle of the circulation flow path;
The gear device according to claim 6 , wherein the adsorbent is installed in the oil tank. 前記非磁性カバーは、前記磁石の外形と非相似な外形に形成されることを特徴とする請求項１から７のいずれかに記載の歯車装置。 The gear device according to any one of claims 1 to 7 , wherein the nonmagnetic cover is formed in an outer shape that is not similar to the outer shape of the magnet. 前記非磁性カバーは、その表面に複数の凸部又は凹部が設けられることを特徴とする請求項１から８のいずれかに記載の歯車装置。 The gear device according to any one of claims 1 to 8 , wherein the nonmagnetic cover has a plurality of convex portions or concave portions provided on a surface thereof. 前記非磁性カバーは、複数のリング状の溝部が並んで形成されることを特徴とする請求項１から９のいずれかに記載の歯車装置。 The gear device according to any one of claims 1 to 9 , wherein the nonmagnetic cover is formed with a plurality of ring-shaped grooves arranged side by side. 前記吸着体を取り付けるための被取付部を複数有することを特徴とする請求項１から１０のいずれかに記載の歯車装置。   The gear device according to any one of claims 1 to 10, comprising a plurality of attached portions for attaching the adsorbent. 前記吸着体は、前記非磁性カバーから前記磁石を出し入れ可能に構成されることを特徴とする請求項１から１１のいずれかに記載の歯車装置。   The gear unit according to any one of claims 1 to 11, wherein the attracting member is configured to be able to insert and remove the magnet from the nonmagnetic cover.
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DE112014001626.8T DE112014001626B4 (en) 2013-03-25 2014-01-17 Foreign body attracting structure
PCT/JP2014/000224 WO2014155907A1 (en) 2013-03-25 2014-01-17 Foreign matter-attracting structure
CN201480008642.4A CN105074284B (en) 2013-03-25 2014-01-17 Foreign matter adsorption structure
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