JP5112088B2 - Lubricating oil supply system for inspection and hydraulic drive unit with reduction gear - Google Patents

Lubricating oil supply system for inspection and hydraulic drive unit with reduction gear Download PDF

Info

Publication number
JP5112088B2
JP5112088B2 JP2008011085A JP2008011085A JP5112088B2 JP 5112088 B2 JP5112088 B2 JP 5112088B2 JP 2008011085 A JP2008011085 A JP 2008011085A JP 2008011085 A JP2008011085 A JP 2008011085A JP 5112088 B2 JP5112088 B2 JP 5112088B2
Authority
JP
Japan
Prior art keywords
lubricating oil
oil supply
chamber
built
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.)
Active
Application number
JP2008011085A
Other languages
Japanese (ja)
Other versions
JP2009174567A (en
Inventor
定利 赤津
賢 太田
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.)
KYB Corp
Original Assignee
KYB Corp
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 KYB Corp filed Critical KYB Corp
Priority to JP2008011085A priority Critical patent/JP5112088B2/en
Publication of JP2009174567A publication Critical patent/JP2009174567A/en
Application granted granted Critical
Publication of JP5112088B2 publication Critical patent/JP5112088B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Examining Or Testing Airtightness (AREA)
  • General Details Of Gearings (AREA)

Description

この発明は、例えばクローラを駆動するための減速機付油圧駆動装置のリークを検査する検査機能を備えた潤滑油供給装置に関する。   The present invention relates to a lubricating oil supply apparatus having an inspection function for inspecting a leak of a hydraulic drive unit with a reduction gear for driving a crawler, for example.

減速機付油圧駆動装置として、特許文献1に示すものが従来から知られている。この減速機付油圧駆動装置Aは、例えば、クローラ式車両の走行駆動装置として用いられ、モータ機構に減速機構を連係することによって、高トルクを出力するようにしている。
この従来の減速機付油圧駆動装置Aを、図2〜4を用いて詳しく説明する。
モータハウジング1には、その外周に設けたベアリング2を介して、底板を設けた筒状の回転駆動体3を回転自在に組み付けるとともに、これらモータハウジング1と回転駆動体3とが相まって、回転駆動体3内に減速機組込み室3aを形成している。そして、上記ベアリング2よりも外寄りに一対のシールリング4,4および一対のOリング5,5からなるフローティングシール6を設け、ハウジング1と回転駆動体3との組み付け部分から油漏れが生じないようにしている。このようにした回転駆動体3に設けた減速機組込み室3aには、回転軸7aを設けた遊星ギアからなる減速機構7を組み込んでいる。
As a hydraulic drive device with a speed reducer, the one shown in Patent Document 1 is conventionally known. The hydraulic drive device A with a speed reducer is used, for example, as a travel drive device for a crawler type vehicle, and outputs a high torque by linking a speed reduction mechanism to a motor mechanism.
The conventional hydraulic drive unit A with a reduction gear will be described in detail with reference to FIGS.
A cylindrical rotary drive body 3 provided with a bottom plate is rotatably assembled to the motor housing 1 via a bearing 2 provided on the outer periphery of the motor housing 1, and the motor housing 1 and the rotary drive body 3 are combined to rotate. A reduction gear built-in chamber 3 a is formed in the body 3. A floating seal 6 comprising a pair of seal rings 4 and 4 and a pair of O-rings 5 and 5 is provided outside the bearing 2 so that no oil leaks from the assembly portion of the housing 1 and the rotary drive body 3. I am doing so. The speed reducer built-in chamber 3a provided in the rotary drive body 3 thus constructed incorporates a speed reduction mechanism 7 composed of a planetary gear provided with a rotating shaft 7a.

上記のように減速機構7を組み込んだ減速機組込み室3aには、減速機構7の焼き付きなどを防止するために潤滑油を充填するが、上記したフローティングシール6は、この潤滑油の漏洩を防止するものである。   The speed reducer built-in chamber 3a in which the speed reduction mechanism 7 is incorporated as described above is filled with lubricating oil to prevent the speed reduction mechanism 7 from being seized. The floating seal 6 described above prevents leakage of the lubricating oil. To do.

一方、上記モータハウジング1にはモータ組込み室1aを設けるとともに、このモータ組込み室1aにアキシャル斜板モータからなるモータ機構8を組み込んでいる。また、このモータハウジング1には軸受装着孔1bを設け、この軸受装着孔1bに設けた軸受9でモータ機構8のモータ軸8aの先端を回転自在に支持している。さらに、上記モータハウジング1には軸突出孔1cを形成し、この軸突出孔1cから減速機構7の回転軸7aを突出させるとともに、上記モータ軸8aの先端に、前記減速機構7の回転軸7aの先端を挿入して固定し、モータ軸8aと回転軸7aとが一体回転する構成にしている。
なお、上記軸受装着孔1b内であって、軸受9よりも減速機組込み室3a側に、シール部材10を装着し、減速機組込み室3aに充填した上記潤滑油がモータ組込み室1a側に漏れないようにしている。
On the other hand, the motor housing 1 is provided with a motor built-in chamber 1a, and a motor mechanism 8 composed of an axial swash plate motor is built into the motor built-in chamber 1a. The motor housing 1 is provided with a bearing mounting hole 1b, and the bearing 9 provided in the bearing mounting hole 1b rotatably supports the tip of the motor shaft 8a of the motor mechanism 8. Further, the motor housing 1 is formed with a shaft projecting hole 1c, the rotating shaft 7a of the speed reduction mechanism 7 is projected from the shaft projecting hole 1c, and the rotating shaft 7a of the speed reducing mechanism 7 is provided at the tip of the motor shaft 8a. The motor shaft 8a and the rotating shaft 7a are integrally rotated.
In addition, the seal member 10 is mounted in the bearing mounting hole 1b and closer to the reduction gear incorporating chamber 3a than the bearing 9, and the lubricating oil filled in the reduction gear incorporating chamber 3a leaks to the motor incorporating chamber 1a. I am trying not to.

また、回転駆動体3とは反対側におけるモータ組込み室1aの開口部分は、モータ機構8を制御するバルブを組み込んだバルブケース11でふさぐとともに、このバルブケース11に設けた軸受12でモータ軸8aの基端を回転自在に支持している。   Further, the opening part of the motor built-in chamber 1a on the side opposite to the rotary drive body 3 is blocked by a valve case 11 incorporating a valve for controlling the motor mechanism 8, and a motor shaft 8a is supported by a bearing 12 provided on the valve case 11. The base end of is supported rotatably.

次に、上記減速機付油圧駆動装置の組み付け手順を説明する。
まず、回転駆動体3の減速機組込み室3aに減速機構7を組み込むとともに、この回転駆動体3にはモータハウジング1を組み付けるが、この段階では、モータハウジング1にはモータ機構8を組み込んでいない。このようにモータハウジング1と回転駆動体3とを組み付けたとき、図3に示すようにベアリング2およびフローティングシール6も組み付けられた状態にしておく。したがって、モータハウジング1と回転駆動体3とは相対回転自在に保たれるとともに、それらの組み付け部分はフローティングシール6で液密にシールされることになる。
Next, an assembling procedure of the hydraulic drive unit with a reduction gear will be described.
First, the speed reduction mechanism 7 is incorporated in the speed reducer built-in chamber 3a of the rotation drive body 3, and the motor housing 1 is assembled to the rotation drive body 3. At this stage, the motor mechanism 8 is not incorporated in the motor housing 1. . When the motor housing 1 and the rotary drive body 3 are assembled in this way, the bearing 2 and the floating seal 6 are also assembled as shown in FIG. Therefore, the motor housing 1 and the rotary drive body 3 are kept relatively rotatable, and their assembled portions are sealed in a liquid-tight manner by the floating seal 6.

上記のようにモータ機構8を組み込む前のモータハウジング1と、回転駆動体3とを組み付けたら、図3に示すようにモータ組込み室1aの開口を密閉板13でふさぐが、このときにはシール部材10を装着していないので、モータ組込み室1aと減速機組込み室3aとは連通状態を持っている。
なお、上記のように密閉板13で上記モータ組込み室1aの開口をふさいだときには、モータハウジング1に形成された潤滑油供給孔14もふさがれるようにしている。したがって、密閉板13によって、モータ組込み室1aおよび減速機組込み室3aのそれぞれが密閉されることになる。
When the motor housing 1 before the motor mechanism 8 is assembled and the rotary drive body 3 are assembled as described above, the opening of the motor assembly chamber 1a is closed with the sealing plate 13 as shown in FIG. Therefore, the motor built-in chamber 1a and the speed reducer built-in chamber 3a are in communication with each other.
In addition, when the opening of the motor built-in chamber 1a is blocked by the sealing plate 13 as described above, the lubricating oil supply hole 14 formed in the motor housing 1 is also blocked. Therefore, each of the motor built-in chamber 1a and the reduction gear built-in chamber 3a is sealed by the sealing plate 13.

上記のようにした密閉板13にはエア供給孔15が形成され、このエア供給孔15から圧縮空気を供給できるようにしている。そして、エア供給孔15から導かれた圧縮空気は、軸受装着孔1bを介して減速機組込み室3aに導かれる。したがって、フローティングシール6が十分機能していなければ、そこにエア漏れが発生する。このときエア漏れがあるか否かは、後で説明する装置を用いて検出し、上記フローティングシール6のシール機能をチェックする。もし、シール機能に問題がなければ、図4に示すように、上記密閉板13をモータハウジング1から取り外すとともに、上記潤滑油供給孔14にプラグ16を取り付けて、このプラグ16を、電磁切換弁17を介して潤滑油供給ポンプPoに接続する。そして、電磁切換弁17を図示の閉位置から開位置に切り換えて、回転駆動体3の減速機組込み室3aに潤滑油を供給する。   An air supply hole 15 is formed in the sealing plate 13 as described above, and compressed air can be supplied from the air supply hole 15. The compressed air guided from the air supply hole 15 is guided to the speed reducer built-in chamber 3a through the bearing mounting hole 1b. Therefore, if the floating seal 6 is not functioning sufficiently, air leaks there. At this time, whether or not there is an air leak is detected using a device described later, and the sealing function of the floating seal 6 is checked. If there is no problem with the sealing function, the sealing plate 13 is removed from the motor housing 1 and a plug 16 is attached to the lubricating oil supply hole 14 as shown in FIG. 17 is connected to the lubricating oil supply pump Po. Then, the electromagnetic switching valve 17 is switched from the illustrated closed position to the open position, and lubricating oil is supplied to the speed reducer built-in chamber 3 a of the rotary drive body 3.

上記のようにして回転駆動体3の減速機組込み室3aに潤滑油を充填したら、潤滑油供給孔14からプラグを取り外して、当該潤滑油供給孔14をふさぐとともに、モータハウジング1の軸受装着孔1bにシール部材10と軸受9を装着し、その後に、モータ組込み室1aにモータ機構8を組み込み、モータ軸8aと回転軸7aとを一体回転可能に連結する。
このようにして組み込まれたモータ機構8のモータ軸8aが軸受9,12で支持されるとともに、モータ軸8aの周囲がシール部材10でシールされる。
そして、最後にモータ組込み室1aの開口をバルブケース11で密閉してこの減速機付油圧駆動装置の組み付けを終了する。
When lubricating oil is filled in the speed reducer built-in chamber 3a of the rotary drive body 3 as described above, the plug is removed from the lubricating oil supply hole 14 to close the lubricating oil supply hole 14, and the bearing mounting hole of the motor housing 1 The seal member 10 and the bearing 9 are mounted on 1b, and then the motor mechanism 8 is installed in the motor built-in chamber 1a, and the motor shaft 8a and the rotating shaft 7a are coupled so as to be integrally rotatable.
The motor shaft 8a of the motor mechanism 8 incorporated in this way is supported by the bearings 9 and 12, and the periphery of the motor shaft 8a is sealed by the seal member 10.
Finally, the opening of the motor built-in chamber 1a is sealed with the valve case 11, and the assembly of the hydraulic drive unit with a speed reducer is completed.

次に、フローティングシール6のシール機能をチェックするリーク検出機構について説明する。
リーク検出機構101は、エアポンプPaを備えるとともに、このエアポンプPaには、検査通路102と、比較通路103とをパラレルに接続している。これら両通路102,103には図示しないレギュレータ等を設けて、両通路102,103に供給されるエアの圧力が一定に保たれるようにしている。
また、両通路102,103には電磁切換弁104,105を設けるとともに、この電磁切換弁104,105を切り換え制御することによって、両通路102,103を開閉するようにしている。
Next, a leak detection mechanism for checking the sealing function of the floating seal 6 will be described.
The leak detection mechanism 101 includes an air pump Pa, and an inspection passage 102 and a comparison passage 103 are connected in parallel to the air pump Pa. A regulator or the like (not shown) is provided in both the passages 102 and 103 so that the pressure of the air supplied to both the passages 102 and 103 is kept constant.
Further, both the passages 102 and 103 are provided with electromagnetic switching valves 104 and 105, and both the passages 102 and 103 are opened and closed by controlling the switching of the electromagnetic switching valves 104 and 105.

そして、上記検査通路102は、密閉板13のエア供給孔15に接続し、エアポンプPaから供給される圧縮空気を、上記エア供給孔15に導いている。したがって、エアポンプPaから圧縮空気を供給すれば、当該圧縮空気が、検査通路102およびエア供給孔15を介してモータ組込み室1aおよび減速機組込み室3aに導かれる。
一方、上記比較通路103には、マスターMを接続しているが、このマスターMは、検査対象となる減速機付油圧駆動装置と同型であって、リーク検査に合格した減速機付油圧駆動装置である。また、リーク検出機構101には、検査通路102と比較通路103との差圧を検出する差圧検出手段106を設けている。
The inspection passage 102 is connected to the air supply hole 15 of the sealing plate 13 and guides the compressed air supplied from the air pump Pa to the air supply hole 15. Therefore, if compressed air is supplied from the air pump Pa, the compressed air is guided to the motor built-in chamber 1a and the speed reducer built-in chamber 3a through the inspection passage 102 and the air supply hole 15.
On the other hand, a master M is connected to the comparison passage 103. The master M is the same type as the hydraulic drive unit with a reduction gear to be inspected, and the hydraulic drive unit with a reduction device has passed the leak inspection. It is. Further, the leak detection mechanism 101 is provided with a differential pressure detection means 106 that detects a differential pressure between the inspection passage 102 and the comparison passage 103.

そして、エアポンプPaから圧縮空気を所定時間供給し続けて、検査対象である減速機付油圧駆動装置A内すなわちモータ組込み室1aおよび減速機組込み室3a内を加圧するとともに、マスターMにも圧縮空気を供給し続けて、マスターMの内部を加圧する。   Then, the compressed air is continuously supplied from the air pump Pa for a predetermined time to pressurize the inside of the hydraulic drive unit A with a speed reducer, that is, the motor built-in chamber 1a and the speed reducer built-in chamber 3a to be inspected. The inside of the master M is pressurized.

上記のようにして検査対象である減速機付油圧駆動装置AとマスターMとを所定時間加圧したら、電磁切換弁104,105を切り換えて、両通路102,103を閉じる。そして、両通路102,103を閉じてから所定時間が経過したら、差圧検出手段106が両通路102,103の差圧を検出する。
このとき、検査対象である減速機付油圧駆動装置の回転駆動体3からエア漏れがあれば、検査通路102内の圧力が、比較通路103内の圧力よりも低くなり、検査通路102内と、比較通路103内との差圧が大きくなる。
そして、差圧検出手段106が検出する差圧が、予め設定した許容範囲を超えた場合には、検査対象の減速機組込み室3aにリークがあると判断して、部品の交換や組み付け作業をやり直す。一方、上記差圧が許容範囲内にあれば、検査対象はリーク検査に合格したことになる。
After pressurizing the hydraulic drive device A with a reduction gear and the master M to be inspected for a predetermined time as described above, the electromagnetic switching valves 104 and 105 are switched to close both the passages 102 and 103. When a predetermined time elapses after both the passages 102 and 103 are closed, the differential pressure detecting means 106 detects the differential pressure in both the passages 102 and 103.
At this time, if there is an air leak from the rotary drive body 3 of the hydraulic drive unit with a reduction gear to be inspected, the pressure in the inspection passage 102 becomes lower than the pressure in the comparison passage 103, The differential pressure with the comparison passage 103 increases.
When the differential pressure detected by the differential pressure detection means 106 exceeds a preset allowable range, it is determined that there is a leak in the reduction gear built-in chamber 3a to be inspected, and parts are exchanged or assembled. Try again. On the other hand, if the differential pressure is within the allowable range, the inspection object has passed the leak inspection.

上記のように回転駆動体3のリーク検査が終了したら、次に、モータ組込み室1aに、前記したようにモータ機構8を組み込むとともに、この組込み室1aの開口をバルブケース11でふさぐ。このときには、モータ組込み室1aと減速機組込み室3aとは、シール部材10で完全に区画されている。
上記の状態でモータ組込み室1aに圧縮空気を供給して、モータ組込み室1aにリークがあるか否かを検査する。なお、この検査装置も、図3に示したリーク検出機構101を用いるとともに、マスターMとの間での差圧を検出してリークの有無を判定する。
リーク検査によって、モータハウジング1にリークがなければ、モータ組込み室1aに作動油を充填する。
When the leak inspection of the rotary drive body 3 is completed as described above, the motor mechanism 8 is then incorporated into the motor built-in chamber 1a as described above, and the opening of the built-in chamber 1a is closed with the valve case 11. At this time, the motor built-in chamber 1a and the speed reducer built-in chamber 3a are completely partitioned by the seal member 10.
In the above state, compressed air is supplied to the motor built-in chamber 1a to check whether there is a leak in the motor built-in chamber 1a. Note that this inspection apparatus also uses the leak detection mechanism 101 shown in FIG. 3 and determines the presence or absence of a leak by detecting a differential pressure with the master M.
If there is no leak in the motor housing 1 by the leak inspection, the motor built-in chamber 1a is filled with hydraulic oil.

なお、上記のようにモータ組込み室1aのリークを検査するのは、次の理由からである。例えば、モータハウジング1に複数の巣があって、それらが連続している場合に、モータ組込み室1aに充填した作動油が、減速機組込み室3aに漏れて前記潤滑油と混ざり合ってしまう。
しかし、作動油と潤滑油とでは、それらの成分や特性が全く異なるため、減速機組込み室3aに作動油が流れ込めば、この作動油が潤滑油に混合してしまい、潤滑油が本来有している潤滑性能が損なわれてしまう。逆に、減速機組込み室3aからモータ組込み室1aに潤滑油が流れ込めば、当該潤滑油が作動油中に混合してしまい、作動油が本来有している圧力伝達性能が損なわれてしまう。そこで、モータ組込み室1aのリーク検査を実行して、作動油と潤滑油の混合を防止するようにしている。
特開平7−305746号公報 特開平8−313384号公報
The reason why the leak in the motor built-in chamber 1a is inspected as described above is as follows. For example, when there are a plurality of nests in the motor housing 1 and they are continuous, the hydraulic oil filled in the motor built-in chamber 1a leaks into the reducer built-in chamber 3a and mixes with the lubricating oil.
However, since the components and characteristics of the hydraulic oil and the lubricating oil are completely different, if the hydraulic oil flows into the reducer built-in chamber 3a, the hydraulic oil is mixed with the lubricating oil, and the lubricating oil is inherently present. Lubricating performance is impaired. On the contrary, if lubricating oil flows from the reducer built-in chamber 3a into the motor built-in chamber 1a, the lubricating oil is mixed in the working oil, and the pressure transmission performance inherent in the working oil is impaired. . Therefore, a leak inspection of the motor built-in chamber 1a is executed to prevent mixing of hydraulic oil and lubricating oil.
Japanese Patent Laid-Open No. 7-305746 JP-A-8-313384

上記のようにした従来の装置では、減速機組込み室3aのリーク検査をするために、まず、モータハウジング1の開口を密閉板13でふさがなければならない。
そして、検査が終了した段階で、この密閉板13を取り外すとともに、潤滑油供給孔14にプラグ16を取付け、当該プラグを潤滑油供給ポンプPoに接続してから、潤滑油を供給しなければならない。
したがって、従来のリーク検査装置では、減速機組込み室3aのリーク検査終了から、減速機組込み室3aに潤滑油を注入するまでに、間をおかずに連続的に作業することができなかった。このように間をおかずに連続的な作業ができない分、作業時間が長くなるという問題があった。
In the conventional apparatus as described above, the opening of the motor housing 1 must first be blocked with the sealing plate 13 in order to perform a leak inspection of the reduction gear built-in chamber 3a.
When the inspection is completed, the sealing plate 13 is removed, a plug 16 is attached to the lubricating oil supply hole 14, and the plug is connected to the lubricating oil supply pump Po before supplying the lubricating oil. .
Therefore, in the conventional leak inspection apparatus, it was not possible to work continuously without any delay from the end of the leak inspection of the reducer built-in chamber 3a to the injection of lubricating oil into the reducer built-in chamber 3a. As described above, there is a problem that the working time becomes long because continuous work cannot be performed without a short time.

また、従来の装置では、回転駆動体3のリークを検査するとき、モータ組込み室1aに圧縮空気を供給して、その圧力を減速機組込み室3aに導くようにしているので、モータ組込み室1aと減速機組込み室3aとの圧力は同じになる。したがって、モータハウジング1に、例えば、複数の巣による連続気泡があっても、回転駆動体3のリーク検査時にはそれをチェックすることができない。   In the conventional apparatus, when the leakage of the rotary drive body 3 is inspected, compressed air is supplied to the motor built-in chamber 1a and the pressure is guided to the reducer built-in chamber 3a. The pressure in the speed reducer built-in chamber 3a is the same. Therefore, even if the motor housing 1 has, for example, continuous bubbles due to a plurality of nests, it cannot be checked during the leak inspection of the rotary drive body 3.

そのために、モータハウジング1に漏れがあるかどうかは、モータ組込み室1aにモータ機構8を組み込んで、このモータ組込み室1aの開口をバルブケース11でふさいでから実行するリーク検査工程時でしか発見することができない。
しかし、モータ組込み室1aにモータ機構8を完全に組み込んでから、モータ組込み室1aのリークが発見されたときには、モータ機構8をモータ組込み室1aから外して、そのリークの原因を突き止めてから、それを補修しなければならない。
Therefore, whether or not there is a leak in the motor housing 1 is found only in the leak inspection process that is executed after the motor mechanism 8 is installed in the motor built-in chamber 1a and the opening of the motor built-in chamber 1a is blocked by the valve case 11. Can not do it.
However, when a leak in the motor built-in chamber 1a is found after the motor mechanism 8 is completely incorporated into the motor built-in chamber 1a, the motor mechanism 8 is removed from the motor built-in chamber 1a, and the cause of the leak is determined. It must be repaired.

したがって、上記連続気泡がモータハウジング1に形成されていた場合には、モータハウジング1にモータ機構8を組み込んだり、バルブケース11を取り付けたりする作業が無駄になるばかりか、それを取り外す作業まで必要となり、極めて作業効率が悪くなるという問題があった。
この発明の目的は、減速機組込み室のリーク検査終了から、減速機組込み室に潤滑油を注入するまでに、間をおかずに連続的に作業ができる装置を提供することである。
また、他の目的は、減速機付油圧駆動装置の組み付け作業が完了する前の段階で、モータハウジングのリークを発見できるようにして、作業効率を高められる装置を提供することである。
Therefore, when the above-mentioned open bubbles are formed in the motor housing 1, not only the work of incorporating the motor mechanism 8 into the motor housing 1 and the attachment of the valve case 11 is wasted, and the work of removing it is necessary. Thus, there is a problem that the working efficiency is extremely deteriorated.
An object of the present invention is to provide an apparatus capable of continuously working without any delay from the end of a leak test in a reduction gear built-in chamber to the injection of lubricating oil into the reduction gear built-in chamber.
Another object of the present invention is to provide an apparatus capable of improving the working efficiency by enabling the leak of the motor housing to be found before the assembly work of the hydraulic drive unit with a reduction gear is completed.

この発明は、モータハウジングに、底板を設けた筒状の回転駆動体を回転自在にはめるとともに、これら回転駆動体とモータハウジングとが相まって、回転駆動体内に減速機組込み室を区画形成するする。一方、上記モータハウジングに設けたモータ組込み室にはモータ機構を組み込み、上記減速機組込み室には減速機構を組み込み、これら両組込み室は、モータハウジングに形成した軸受装着孔を介して連通させ、モータ機構のモータ軸を上記軸受装着孔に設けた軸受に支持させている。そして、このモータ軸の回転力を、減速機構を介して回転駆動体に伝達する一方、モータハウジングと回転駆動体との組み付け部分をシールして減速機組込み室を液密にしてなる減速機付油圧駆動装置の検査兼用潤滑油供給装置を前提にするものである。   According to the present invention, a cylindrical rotary drive body having a bottom plate is rotatably fitted to a motor housing, and the rotary drive body and the motor housing are combined to form a reduction gear incorporating chamber in the rotary drive body. On the other hand, a motor mechanism is built in the motor built-in chamber provided in the motor housing, a speed reducing mechanism is built in the reducer built-in chamber, and both the built-in chambers communicate with each other through a bearing mounting hole formed in the motor housing. The motor shaft of the motor mechanism is supported by a bearing provided in the bearing mounting hole. Then, the rotational force of the motor shaft is transmitted to the rotary drive body through the speed reduction mechanism, while the assembly portion between the motor housing and the rotary drive body is sealed to make the speed reducer built-in chamber liquid-tight. It is premised on a lubricating oil supply device for inspection and use of a hydraulic drive device.

第1の発明は、上記の装置を前提にしつつ、エア供給孔を形成するとともに、少なくとも減速機組込み室を密閉する密閉手段と、この密閉された減速機組込み室に圧縮空気を供給するエアポンプと、圧縮空気が供給された減速機組込み室の圧力変化を検出するとともに、検査終了時に減速機組込み室を大気に開放するリーク検出機構と、モータハウジングに形成した潤滑油供給孔に潤滑油を供給する潤滑油供給ポンプと、この潤滑油供給孔と潤滑油供給ポンプとの間に設けられるとともに、潤滑油供給孔から潤滑油供給ポンプ側への流体の流通を阻止するチェック弁と、潤滑油供給ポンプを潤滑油供給孔に連通させたり、その連通を遮断したりする潤滑油供給用切換弁と、リーク検出機構が減速機組込み室を大気に開放したとき潤滑油供給用切換弁を連通状態に切り換える制御手段とを備えた点に特徴を有する。
A first invention presupposes the above-mentioned device, and forms an air supply hole and at least a sealing means for sealing the reduction gear incorporating chamber, and an air pump for supplying compressed air to the sealed reduction gear incorporating chamber , Detects the pressure change in the reducer built-in chamber supplied with compressed air, and supplies the lubricant to the leak detection mechanism that opens the reducer built-in chamber to the atmosphere at the end of the inspection, and the lubricating oil supply hole formed in the motor housing A lubricating oil supply pump, a check valve that is provided between the lubricating oil supply hole and the lubricating oil supply pump, and that prevents fluid from flowing from the lubricating oil supply hole to the lubricating oil supply pump, and a lubricating oil supply Lubricating oil supply switching valve for connecting the pump to the lubricating oil supply hole and blocking the communication, and for supplying lubricating oil when the leak detection mechanism opens the reducer built-in chamber to the atmosphere Characterized in that and a control means for switching the valve to the communicating state.

第2の発明は、リーク検出機構に、密閉された減速機組込み室を大気に開放するエア開放電磁切換弁を設ける一方、潤滑油供給ポンプを潤滑油供給孔に連通させたり、その連通を遮断したりする潤滑油供給用切換弁を電磁切換弁とし、上記制御手段は、エア開放電磁切換弁および潤滑油供給用電磁切換弁の開閉を制御するとともに、エア開放電磁切換弁を開位置に切換えると同時もしくはほぼ同時に潤滑油供給用電磁切換弁を開位置に切換える構成にした点に特徴を有する。   In the second aspect of the invention, the leak detection mechanism is provided with an air release electromagnetic switching valve that opens the sealed speed reducer built-in chamber to the atmosphere, while the lubricating oil supply pump is connected to the lubricating oil supply hole, or the communication is cut off. The switching valve for supplying lubricating oil is an electromagnetic switching valve, and the control means controls opening and closing of the air opening electromagnetic switching valve and the lubricating oil supply electromagnetic switching valve and switches the air opening electromagnetic switching valve to the open position. It is characterized in that the electromagnetic oil supply valve for supplying lubricating oil is switched to the open position simultaneously or substantially simultaneously.

第3の発明は、その制御手段が、減速機組込み室のエア漏れ許容限度基準を記憶し、検査対象である減速機付油圧駆動装置のエア漏洩が上記エア漏れ許容限度基準以内にあるかどうかを判定する一方、そのエア漏洩が上記エア漏れ許容限度基準以内にあると判定したとき、エア開放電磁切換弁および潤滑油供給用電磁切換弁を同時もしくはほぼ同時に切り換える機能を備えた点に特徴を有する。
第4の発明は、その制御手段が、手動操作でエア開放電磁切換弁および潤滑油供給用電磁切換弁の開閉を制御する構成にした点に特徴を有する。
第5の発明は、上記密閉手段が、モータ組込み室と減速機組込み室とを連通させる軸受装着孔のみを密閉する構成にした点に特徴を有する。
In the third invention, the control means stores the air leak allowable limit standard of the reduction gear built-in chamber, and whether or not the air leak of the hydraulic drive unit with a speed reducer to be inspected is within the air leak allowable limit standard. On the other hand, when it is determined that the air leakage is within the above air leakage allowable limit standard, the air release electromagnetic switching valve and the lubricating oil supply electromagnetic switching valve are provided with a function of switching simultaneously or substantially simultaneously. Have.
The fourth invention is characterized in that the control means is configured to control opening and closing of the air release electromagnetic switching valve and the lubricating oil supply electromagnetic switching valve by manual operation.
The fifth invention is characterized in that the sealing means is configured to seal only the bearing mounting hole for communicating the motor built-in chamber and the reducer built-in chamber.

第1の発明によれば、減速機組込み室を密閉手段で密閉して、リーク検出機構をセットするとともに、潤滑油供給孔に潤滑油供給ポンプを接続しておけば、リーク検査が終了した時点で、潤滑油を減速機組込み室に供給することができる。言い換えると、リーク検査作業と潤滑油供給作業とを、間をおかずに連続的に実施することができるので、作業時間を短縮することができる。
第2の発明によれば、エア開放電磁切換弁を開位置に切り換えたとき、潤滑油供給用電磁切換弁を切り換えて、潤滑油を減速機組込み室に供給できるので、作業の連続性を効率よく保つことができる。
According to the first invention, when the speed reducer built-in chamber is sealed with a sealing means, the leak detection mechanism is set, and the lubricating oil supply pump is connected to the lubricating oil supply hole, the leak inspection is completed. Thus, lubricating oil can be supplied to the reducer built-in chamber. In other words, since the leak inspection work and the lubricating oil supply work can be continuously performed without any gap, the work time can be shortened.
According to the second aspect of the present invention, when the air release electromagnetic switching valve is switched to the open position, the lubricating oil supply electromagnetic switching valve can be switched to supply the lubricating oil to the reduction gear built-in chamber. Can keep well.

第3の発明によれば、制御手段が減速機組込み室の漏洩状態を判定して、エア開放電磁切換弁および潤滑油供給用電磁切換弁を切り換え制御するので、作業の自動化を進めることができる。
第4の発明によれば、当該装置のコストアップを阻止することができる。
According to the third aspect of the invention, since the control means determines the leakage state of the reduction gear built-in chamber and controls the switching of the air release electromagnetic switching valve and the lubricating oil supply electromagnetic switching valve, the automation of the work can be promoted. .
According to the fourth invention, it is possible to prevent the cost of the apparatus from increasing.

第5の発明によれば、減速機組込み室のリーク検査をするとき、密閉手段を軸受装着孔のみに密接させて、圧縮空気を減速機組込み室に直接供給するようにしたので、減速機組込み室自体のリークはもちろん、この減速機組込み室を形成するモータハウジングのリークも検出することができる。言い換えると、モータハウジングにモータ機構やバルブケース等を組み付ける前に、モータハウジングのリークを発見することができる。また、例えば、モータハウジングに複数の巣があってそれらが連続してリーク孔を形成しているなど、モータハウジングに材質的な欠陥があるような場合に、それを発見しやすくなる。
このようにモータハウジングにリークが検出されたときには、当該ハウジングを回転駆動体から外すだけで、その補修作業に取り掛かることができ、作業効率を高めることができる。
According to the fifth aspect of the present invention, when checking the leak in the reduction gear built-in chamber, the sealing means is brought into close contact with only the bearing mounting hole so that the compressed air is directly supplied to the reduction gear built-in chamber. In addition to leaks in the chamber itself, leaks in the motor housing forming the reduction gear built-in chamber can also be detected. In other words, the leak of the motor housing can be found before assembling the motor mechanism, the valve case, or the like to the motor housing. In addition, for example, when there is a material defect in the motor housing, such as when there are a plurality of nests in the motor housing and they continuously form a leak hole, it becomes easy to find it.
Thus, when a leak is detected in the motor housing, the repair work can be started only by removing the housing from the rotary drive body, and the work efficiency can be improved.

図1を用いて、この発明の実施形態について説明する。ただし、この実施形態では、上記従来で説明したのと同じ減速機付油圧駆動装置を前提にしたものである。したがって、従来と同じ構成については従来と同じ符号を付するとともに、減速機付油圧駆動装置Aの詳細な説明は省略する。   An embodiment of the present invention will be described with reference to FIG. However, in this embodiment, the same hydraulic drive device with a reduction gear as that described above is assumed. Accordingly, the same reference numerals as those in the related art are assigned to the same configurations as those in the prior art, and a detailed description of the hydraulic drive device A with a reduction gear is omitted.

図1に示すように、リーク検出機構101を構成するエアポンプPaは、電磁切換弁118を介して検査通路102と比較通路103とに接続している。そして、上記電磁切換弁118は、非励磁状態でノーマル位置である閉位置を保ち、励磁状態で上記両通路102,103に同時に連通する開位置を保つようにしている。このようにした電磁切換弁118は、制御手段Cと電気的に接続され、制御手段Cの電気信号に応じて切り換わるものである。   As shown in FIG. 1, the air pump Pa constituting the leak detection mechanism 101 is connected to the inspection passage 102 and the comparison passage 103 via an electromagnetic switching valve 118. The electromagnetic switching valve 118 maintains a closed position, which is a normal position in a non-excited state, and maintains an open position in which both the passages 102 and 103 are simultaneously communicated in an excited state. The electromagnetic switching valve 118 configured as described above is electrically connected to the control means C and is switched according to the electrical signal from the control means C.

上記検査通路102には、この発明の密閉手段である円筒状のエアノズル19を接続しているが、このエアノズル19は、その先端に開口部19aを形成するとともに、その開口部周囲にシール部材20を設けている。また、上記開口部19aとは反対端にはエア供給孔19bを形成し、このエア供給孔19bを前記した検査通路102に接続している。
また、この円筒状のエアノズル19は、その外径を軸受装着孔1bの内径よりも小さく、かつ、軸突出孔1cよりも大きくするとともに、この開口部19aを、上記軸突出孔1cを囲むようにして密接させると、その密接部分はシール部材20でシールされるようにしている。
A cylindrical air nozzle 19 which is a sealing means of the present invention is connected to the inspection passage 102. The air nozzle 19 has an opening 19a at the tip thereof and a seal member 20 around the opening. Is provided. Further, an air supply hole 19b is formed at the end opposite to the opening 19a, and the air supply hole 19b is connected to the inspection passage 102 described above.
The cylindrical air nozzle 19 has an outer diameter smaller than the inner diameter of the bearing mounting hole 1b and larger than the shaft protruding hole 1c, and the opening 19a surrounds the shaft protruding hole 1c. When in close contact, the close contact portion is sealed with the seal member 20.

そして、回転駆動体3の減速機組込み室3aに減速機構7を組み込むとともに、この回転駆動体3に、モータハウジング1をはめるが、この段階では、当該モータハウジング1にはモータ機構8を組み込んでいない。
上記の状態で、エアノズル19の開口部19aを上記軸突出孔1cの周囲に密接させるとともに、エアポンプPaからの圧縮空気を減速機組込み室3aに直接供給する。この状態では、モータハウジング1のモータ組込み室1aが大気に開放された状態で、エアポンプPaからの圧縮空気が減速機組込み室3aに供給されることになる。
Then, the speed reduction mechanism 7 is incorporated into the speed reducer built-in chamber 3a of the rotation drive body 3, and the motor housing 1 is fitted to the rotation drive body 3. At this stage, the motor mechanism 8 is incorporated into the motor housing 1. Not in.
In the above state, the opening 19a of the air nozzle 19 is brought into close contact with the periphery of the shaft protruding hole 1c, and the compressed air from the air pump Pa is directly supplied to the reduction gear incorporating chamber 3a. In this state, the compressed air from the air pump Pa is supplied to the speed reducer built-in chamber 3a while the motor built-in chamber 1a of the motor housing 1 is opened to the atmosphere.

一方、比較通路103にはマスターMを接続するとともに、両通路102,103間には差圧検出手段106を接続しているが、これらマスターMおよび差圧検出手段106は従来と全く同じ構成である。ただし、この実施形態の差圧検出手段106は、その検出情報を上記制御手段Cに入力するようにしている。
さらに、この実施形態では、上記両通路102,103間にエア開放電磁切換弁21を接続している点が、従来と異なる。このエア開放電磁切換弁21は、ノーマル位置を保つ非励磁状態で上記両通路102,103を大気に開放させる開位置を保ち、励磁状態で上記両通路102,103と大気との連通を遮断する閉位置を保つようにしている。そして、このエア開放電磁切換弁21は、制御手段Cと電気的に接続され、制御手段Cの電気信号に応じて切り換わるものである。
On the other hand, a master M is connected to the comparison passage 103, and a differential pressure detection means 106 is connected between the passages 102 and 103. The master M and the differential pressure detection means 106 have the same configuration as in the prior art. is there. However, the differential pressure detection means 106 of this embodiment inputs the detection information to the control means C.
Furthermore, this embodiment is different from the prior art in that an air release electromagnetic switching valve 21 is connected between the passages 102 and 103. The air release electromagnetic switching valve 21 maintains an open position for opening the passages 102 and 103 to the atmosphere in a non-excited state that maintains a normal position, and blocks communication between the passages 102 and 103 and the atmosphere in an excited state. The closed position is maintained. The air release electromagnetic switching valve 21 is electrically connected to the control means C and is switched according to the electrical signal from the control means C.

一方、モータハウジング1に形成した潤滑油供給孔14にはプラグ16を接続するとともに、このプラグ16に接続した潤滑油供給通路22を潤滑油供給ポンプPoに接続している。
そして、上記潤滑油供給通路22には、その上流側から順に潤滑油供給用電磁切換弁23およびこの発明の弁手段であるチェック弁24を設けている。
上記潤滑油供給用電磁切換弁23は、非励磁状態であるノーマル位置にあるとき閉位置を保ち、励磁状態にあるとき開位置を保つものである。そして、この潤滑油供給用電磁切換弁23は、制御手段Cと電気的に接続され、制御手段Cの電気信号に応じて切り換わるものである。
また、上記チェック弁24は潤滑油供給ポンプPoから潤滑油供給孔14への流通のみを許容するものである。言い換えると、潤滑油供給孔14から潤滑油供給ポンプPo方向への流体の流れを阻止するが、流体が気体であってもその流通を阻止する機能を備えている。
On the other hand, a plug 16 is connected to the lubricant supply hole 14 formed in the motor housing 1, and a lubricant supply passage 22 connected to the plug 16 is connected to the lubricant supply pump Po.
The lubricating oil supply passage 22 is provided with a lubricating oil supply electromagnetic switching valve 23 and a check valve 24 as valve means of the present invention in order from the upstream side.
The lubricating oil supply electromagnetic switching valve 23 maintains a closed position when in a normal position in a non-excited state and maintains an open position in an excited state. The lubricating oil supply electromagnetic switching valve 23 is electrically connected to the control means C and is switched according to the electric signal of the control means C.
The check valve 24 allows only the flow from the lubricating oil supply pump Po to the lubricating oil supply hole 14. In other words, the flow of the fluid from the lubricating oil supply hole 14 toward the lubricating oil supply pump Po is blocked, but it has a function of blocking the flow even if the fluid is a gas.

さらに、上記した制御手段Cは、検査対象である減速機付油圧駆動装置Aのエア漏れ許容限度基準をあらかじめ記憶している。そして、差圧検出手段106で検出された差圧によって、当該検査対象の減速機付油圧駆動装置Aのエア漏れが、上記エア漏れ許容限度基準を満たしているかどうかを判定する機能を備えている。   Furthermore, the above-described control means C stores in advance the air leak allowable limit standard of the reduction gear-equipped hydraulic drive device A that is the object of inspection. And it has the function to determine whether the air leak of the hydraulic drive device A with a reduction gear to be inspected satisfies the air leak allowable limit standard based on the differential pressure detected by the differential pressure detecting means 106. .

次に、検査対象である減速機付油圧駆動装置Aのエア漏れを検査するとともに、当該装置Aに潤滑油を供給するまでの作用を説明する。
まず、エアノズル19で軸突出孔1cをふさぐとともに、このエアノズル19を、検査通路102を介して電磁切換弁118に接続する。なお、このときには、比較通路103を介して電磁切換弁118にマスターMを接続しておくとともに、エア開放電磁切換弁21を励磁してそれを閉位置に切り換えておく。
また、潤滑油供給孔14にプラグ16を取り付けて、この潤滑油供給孔14を潤滑油供給通路22に接続する。このように潤滑油供給孔14を潤滑油供給通路22に接続すると、チェック弁24が機能して潤滑油供給孔14を密閉状態に保つ。
Next, the operation until the air leakage of the reduction gear-equipped hydraulic drive device A to be inspected is checked and the lubricating oil is supplied to the device A will be described.
First, the air nozzle 19 closes the shaft projection hole 1c, and the air nozzle 19 is connected to the electromagnetic switching valve 118 via the inspection passage 102. At this time, the master M is connected to the electromagnetic switching valve 118 via the comparison passage 103, and the air release electromagnetic switching valve 21 is excited and switched to the closed position.
Further, a plug 16 is attached to the lubricating oil supply hole 14, and the lubricating oil supply hole 14 is connected to the lubricating oil supply passage 22. When the lubricating oil supply hole 14 is connected to the lubricating oil supply passage 22 in this way, the check valve 24 functions to keep the lubricating oil supply hole 14 in a sealed state.

上記のようにしてから制御手段Cを操作して電磁切換弁118を励磁するとともに、当該電磁切換弁118を閉位置から開位置に切り換える。電磁切換弁118が開位置に切り換われば、エアポンプPaから供給された圧縮空気がエアノズル19を介して減速機組込み室3aに供給される。なお、このときには、潤滑油供給孔14がチェック弁24で密閉されているので、減速機組込み室3aは、欠陥的なエア漏れがない限り密閉状態に保たれる。
また、上記エアポンプPaからの圧縮空気は、比較通路103を介してマスターMにも供給される。
After the above operation, the control means C is operated to excite the electromagnetic switching valve 118, and the electromagnetic switching valve 118 is switched from the closed position to the open position. When the electromagnetic switching valve 118 is switched to the open position, the compressed air supplied from the air pump Pa is supplied to the speed reducer built-in chamber 3a via the air nozzle 19. At this time, since the lubricating oil supply hole 14 is sealed by the check valve 24, the reduction gear built-in chamber 3a is kept in a sealed state as long as there is no defective air leakage.
The compressed air from the air pump Pa is also supplied to the master M via the comparison passage 103.

したがって、減速機組込み室3aに欠陥的なエア漏れがあれば、従来と同様に、検査通路102と比較通路103との間に差圧が発生し、その差圧は差圧検出手段106で検出されるとともに、その差圧情報が制御手段Cに入力される。
制御手段Cは、上記差圧情報に基づいて、検査対象の減速機組込み室3aのエア漏れが、エア漏れ許容限度基準と比較してその基準以内にあるかどうかを判定し、もしエア漏れ許容限度基準を超えている場合には、不合格信号を発信する。
Therefore, if there is a defective air leak in the reducer built-in chamber 3a, a differential pressure is generated between the inspection passage 102 and the comparison passage 103 as in the conventional case, and the differential pressure is detected by the differential pressure detecting means 106. At the same time, the differential pressure information is input to the control means C.
Based on the differential pressure information, the control means C determines whether or not the air leak in the reduction gear built-in chamber 3a to be inspected is within the standard compared to the air leak allowable limit standard. If the limit standard is exceeded, a failure signal is transmitted.

一方、エア漏れ許容限度基準以内にあれば、制御手段Cは、電磁切換弁118を非励磁状態にして閉位置に切り換え、エア開放電磁切換弁21を非励磁状態にして当該切換弁21を開位置に切り換えるとともに、潤滑油供給用電磁切換弁23を励磁して、閉位置から開位置に切り換える。
したがって、減速機組込み室3aはエアノズル19、検査通路102およびエア開放電磁切換弁21を介して大気に開放されると同時に、潤滑油供給ポンプPoから供給された潤滑油が、潤滑油供給孔14から減速機組込み室3aに供給される。
このように当該減速機付油圧駆動装置Aのエア漏れの検査が終了したと同時に、潤滑油が減速機組込み室3aに供給されるので、それらの作業工程が間をおくことなく連続的に実行されることになる。
On the other hand, if it is within the allowable air leak limit standard, the control means C switches the electromagnetic switching valve 118 to the closed position by de-energizing, opens the switching valve 21 by switching the air release electromagnetic switching valve 21 to the non-excited state. While switching to the position, the lubricating oil supply electromagnetic switching valve 23 is excited to switch from the closed position to the open position.
Accordingly, the speed reducer built-in chamber 3a is opened to the atmosphere via the air nozzle 19, the inspection passage 102 and the air release electromagnetic switching valve 21, and at the same time, the lubricating oil supplied from the lubricating oil supply pump Po is supplied to the lubricating oil supply hole 14. To the reducer built-in chamber 3a.
Thus, since the inspection of air leakage of the hydraulic drive unit A with a speed reducer is completed, the lubricating oil is supplied to the speed reducer built-in chamber 3a, so that these work steps are continuously executed without any delay. Will be.

なお、モータハウジング1に連続する複数の巣があって、この巣を介して、減速機組込み室3aとモータ組込み室1aとが連通していれば、そこから圧縮空気が大気中に漏れることになる。なぜなら、エアノズル19で軸突出孔1cのみを密閉し、モータ組込み室1aは大気に開放されているからである。したがって、上記のように減速機組込み室3aとモータ組込み室1aとが複数の巣を介して連通していれば、減速機組込み室3aの圧力がマスターMの圧力よりも相対的に低くなる。この圧力の相対差を、制御手段Cで検出すれば、少なくとも減速機組込み室3aのいずれかにリークが発生していることがわかる。   If the motor housing 1 has a plurality of continuous nests, and the reduction gear built-in chamber 3a and the motor built-in chamber 1a communicate with each other through the nests, the compressed air leaks into the atmosphere. Become. This is because only the shaft protruding hole 1c is sealed with the air nozzle 19, and the motor built-in chamber 1a is open to the atmosphere. Therefore, if the speed reducer built-in chamber 3a and the motor built-in chamber 1a communicate with each other through a plurality of webs as described above, the pressure in the speed reducer built-in chamber 3a is relatively lower than the pressure of the master M. When this relative pressure difference is detected by the control means C, it can be seen that at least one of the reduction gear built-in chambers 3a has leaked.

上記のようにマスターMとの間での差圧がエア漏れ許容限度基準を超えた場合に、その原因が、フローティングシール6等の構造的なリークか、あるいはモータハウジング1等の材質的な欠陥によるリークかのいずれかである。そこで、リークの原因が何であるかを追究し、それを補修することになるが、このときには、モータハウジング1を回転駆動体3から取り外して、その補修作業をすることになる。しかし、従来のようにモータ機構8を組み込んだ後にモータハウジング1を取り外す手間を考えれば、この実施形態の補修作業の方が効率的であることは明らかである。   When the differential pressure with the master M exceeds the air leak tolerance limit as described above, the cause is a structural leak of the floating seal 6 or the like, or a material defect of the motor housing 1 or the like. Either one of the leaks. Therefore, the cause of the leak is investigated and repaired. At this time, the motor housing 1 is removed from the rotary drive 3 and the repair work is performed. However, considering the trouble of removing the motor housing 1 after incorporating the motor mechanism 8 as in the prior art, it is clear that the repair work of this embodiment is more efficient.

上記のように減速機組込み室3a側のリークを検査して異常がない場合、あるいは補修終了後には、前記潤滑油供給孔14をふさいでから、モータ組込み室1aにモータ機構8を組み込み、このモータ組込み室1aをバルブケース11でふさいで、全体の組付けを完了する。
そして、全体の組付けが完了したら、再び、モータ組込み室1aに、エアポンプPaから圧縮空気を供給し、そのリークを検出する。この場合の検査対象は、当該モータ組込み室1aをシールする部材や組付け状況の欠陥など構造的なリークとなる。
いずれにしても、この実施形態によれば、エアノズル19を、既存の軸受装着孔1bに密着させるだけでよいので、エアノズル19という簡単なツールを用いるだけで、目的のリーク検査が可能になる。
As described above, if there is no abnormality when the leak on the reduction gear built-in chamber 3a side is inspected, or after the repair is completed, the lubricating oil supply hole 14 is blocked and the motor mechanism 8 is built into the motor built-in chamber 1a. The motor assembly chamber 1a is covered with the valve case 11 to complete the entire assembly.
When the entire assembly is completed, compressed air is again supplied from the air pump Pa to the motor built-in chamber 1a, and the leak is detected. The inspection target in this case is a structural leak such as a member that seals the motor built-in chamber 1a or a defect in the assembly state.
In any case, according to this embodiment, since the air nozzle 19 only needs to be brought into close contact with the existing bearing mounting hole 1b, the target leak inspection can be performed only by using a simple tool called the air nozzle 19.

なお、上記実施形態では、密閉手段としてエアノズル19を用いたが、従来と同様の密閉板13を用いてもよい。ただし、この場合にも、密閉板13でモータ組込み室1aを密閉しつつ、潤滑油供給孔14に潤滑油供給通路22を接続して潤滑油供給孔14を密閉しておかなければならない。潤滑油供給孔14を密閉しておかなければ、減速機組込み室3aに圧縮空気を供給したときに、この圧縮空気が潤滑油供給孔14から漏れてしまい、エア漏れの検査ができなくなるだけでなく、リーク検査と潤滑油供給作業とを連続的にできなくなるからである。
また、従来と同様の密閉板13を用いた場合には、モータハウジング1の巣によるリークを、減速機組込み室3aのリーク検査の段階で見出しにくくなる不便さは解消できない。
In the above embodiment, the air nozzle 19 is used as the sealing means. However, the same sealing plate 13 as that of the related art may be used. In this case, however, the lubricating oil supply passage 14 must be sealed by connecting the lubricating oil supply passage 22 to the lubricating oil supply hole 14 while sealing the motor built-in chamber 1a with the sealing plate 13. If the lubricating oil supply hole 14 is not sealed, when compressed air is supplied to the reducer built-in chamber 3a, the compressed air leaks from the lubricating oil supply hole 14, and the air leakage cannot be inspected. This is because the leak inspection and the lubricating oil supply operation cannot be performed continuously.
Further, when the same sealing plate 13 as in the prior art is used, the inconvenience that makes it difficult to find the leak due to the nest of the motor housing 1 at the stage of the leak inspection of the reduction gear built-in chamber 3a cannot be solved.

さらに、この実施形態における制御手段Cは、リークの状況を判定する機能を持たせ、その漏れが許容限度基準以内にあれば、各電磁切換弁118,21,23を自動的に切り換えるようにしたが、制御手段Cを手動操作するようにしてもよい。また、個々の電磁切換弁118,21,23のすべてを手動操作可能にしてもよく、この場合には、手動操作手段がこの発明の制御手段を構成することになる。
さらにまた、この実施形態ではこの発明の弁手段としてチェック弁24を用いたが、潤滑油供給ポンプPoから潤滑油供給孔14への流通のみを許容し、その逆流を阻止するとともに、その逆流時における潤滑油供給孔14を密閉する機能さえあれば、どのような弁構造でもかまわない。
Further, the control means C in this embodiment has a function of judging the state of the leak, and automatically switches the electromagnetic switching valves 118, 21, 23 if the leak is within the allowable limit standard. However, the control means C may be manually operated. Further, all of the individual electromagnetic switching valves 118, 21, 23 may be manually operable. In this case, the manual operation means constitutes the control means of the present invention.
Furthermore, in this embodiment, the check valve 24 is used as the valve means of the present invention. However, only the flow from the lubricating oil supply pump Po to the lubricating oil supply hole 14 is allowed, and the reverse flow is prevented. Any valve structure may be used as long as it has a function of sealing the lubricating oil supply hole 14.

この実施形態のリーク検査機能を備えた潤滑油供給装置を示す概念図である。It is a conceptual diagram which shows the lubricating oil supply apparatus provided with the leak test | inspection function of this embodiment. 減速機付油圧駆動装置の断面図である。It is sectional drawing of the hydraulic drive device with a reduction gear. 従来のリーク検査装置の説明図である。It is explanatory drawing of the conventional leak test | inspection apparatus. 従来の潤滑油供給装置の説明図である。It is explanatory drawing of the conventional lubricating oil supply apparatus.

符号の説明Explanation of symbols

A 減速機付油圧駆動装置
1 モータハウジング
1a モータ組込み室
1b 軸受装着孔
3 回転駆動体
3a 減速機組込み室
7 減速機構
7a 回転軸
8 モータ機構
8a モータ軸
Po 潤滑油供給ポンプ
14 潤滑油供給孔
19 密閉手段であるエアノズル
19b エア供給孔
21 エア開放電磁切換弁
Pa エアポンプ
C 制御手段
23 潤滑油供給用電磁切換弁
24 弁手段としてチェック弁
101 リーク検出機構
A Hydraulic drive unit with a reduction gear 1 Motor housing 1a Motor built-in chamber 1b Bearing mounting hole 3 Rotating drive body 3a Reducer built-in chamber 7 Reduction mechanism 7a Rotating shaft 8 Motor mechanism 8a Motor shaft Po Lubricating oil supply pump 14 Lubricating oil supply hole 19 Air nozzle 19b which is a sealing means Air supply hole 21 Air release electromagnetic switching valve Pa Air pump C Control means 23 Lubricating oil supply electromagnetic switching valve 24 Check valve 101 as valve means Leak detection mechanism

Claims (5)

モータハウジングに、底板を設けた筒状の回転駆動体を回転自在にはめるとともに、これら回転駆動体とモータハウジングとが相まって、回転駆動体内に減速機組込み室を区画形成する一方、上記モータハウジングに設けたモータ組込み室にはモータ機構を組み込み、上記減速機組込み室には減速機構を組み込み、これら両組込み室は、モータハウジングに形成した軸受装着孔を介して連通させ、モータ機構のモータ軸を上記軸受装着孔に設けた軸受に支持させ、このモータ軸の回転力を、減速機構を介して回転駆動体に伝達する一方、モータハウジングと回転駆動体との組み付け部分をシールして減速機組込み室を液密にしてなる減速機付油圧駆動装置の検査兼用潤滑油供給装置において、エア供給孔を備えるとともに、少なくとも減速機組込み室を密閉する密閉手段と、この密閉された減速機組込み室に圧縮空気を供給するエアポンプと、圧縮空気が供給された減速機組込み室の圧力変化を検出するとともに、検査終了時に減速機組込み室を大気に開放するリーク検出機構と、モータハウジングに形成した潤滑油供給孔に潤滑油を供給する潤滑油供給ポンプと、この潤滑油供給孔と潤滑油供給ポンプとの間に設けられるとともに、潤滑油供給孔から潤滑油供給ポンプ側への流体の流通を阻止するチェック弁と、潤滑油供給ポンプを潤滑油供給孔に連通させたり、その連通を遮断したりする潤滑油供給用切換弁と、リーク検出機構が減速機組込み室を大気に開放したとき潤滑油供給用切換弁を連通状態に切り換える制御手段とを備えた検査兼用潤滑油供給装置。 A cylindrical rotary drive body provided with a bottom plate is rotatably fitted to the motor housing, and the rotary drive body and the motor housing combine to form a reduction gear built-in chamber in the rotary drive body. A motor mechanism is built in the provided motor built-in chamber, and a speed reducer built-in chamber is built in the above-described reducer built-in chamber. Both built-in chambers communicate with each other through a bearing mounting hole formed in the motor housing, and the motor shaft of the motor mechanism is The motor shaft is supported by the bearing provided in the bearing mounting hole, and the rotational force of the motor shaft is transmitted to the rotary drive via the speed reduction mechanism, while the assembly part of the motor housing and rotary drive is sealed to incorporate the speed reducer. in the inspection combined lubricating oil supply device for a hydraulic drive system equipped reduction gear formed by a liquid-tight chamber provided with a air supply hole, at least the speed reducer A sealing means for sealing the enclosing chamber, an air pump for supplying compressed air to the sealed reducer built-in chamber, a pressure change in the reducer incorporating chamber supplied with the compressed air is detected, and a decelerator is incorporated at the end of the inspection. A leak detection mechanism that opens the chamber to the atmosphere, a lubricating oil supply pump that supplies lubricating oil to a lubricating oil supply hole formed in the motor housing, and a gap between the lubricating oil supply hole and the lubricating oil supply pump. A check valve that prevents the fluid from flowing from the lubricating oil supply hole to the lubricating oil supply pump, and a lubricating oil supply switching valve that connects or disconnects the lubricating oil supply pump to the lubricating oil supply hole; And a lubricating oil supply apparatus for inspection and use comprising a control means for switching the lubricating oil supply switching valve to a communicating state when the leak detection mechanism opens the reduction gear built-in chamber to the atmosphere. リーク検出機構には、密閉された減速機組込み室を大気に開放するエア開放電磁切換弁を設ける一方、潤滑油供給ポンプを潤滑油供給孔に連通させたり、その連通を遮断したりする潤滑油供給用切換弁を電磁切換弁とし、上記制御手段は、エア開放電磁切換弁および潤滑油供給用電磁切換弁の開閉を制御するとともに、エア開放電磁切換弁を開位置に切換えると同時もしくはほぼ同時に潤滑油供給用電磁切換弁を開位置に切換える構成にした請求項1記載の検査兼用潤滑油供給装置。 The leak detection mechanism is provided with an air release electromagnetic switching valve that opens the sealed speed reducer built-in chamber to the atmosphere, while the lubricating oil supply pump communicates with the lubricating oil supply hole, and the lubricating oil that blocks the communication The supply switching valve is an electromagnetic switching valve, and the control means controls opening and closing of the air opening electromagnetic switching valve and the lubricating oil supply electromagnetic switching valve, and at the same time or almost simultaneously with switching the air opening electromagnetic switching valve to the open position. 2. The lubricating oil supply apparatus for inspection and use according to claim 1, wherein the lubricating oil supply electromagnetic switching valve is switched to an open position. 上記制御手段は、減速機組込み室のエア漏れ許容限度基準を記憶し、検査対象である減速機付油圧駆動装置のエア漏洩が上記エア漏れ許容限度基準以内にあるかどうかを判定する一方、そのエア漏洩が上記エア漏れ許容限度基準以内にあると判定したとき、エア開放電磁切換弁および潤滑油供給用電磁切換弁を同時もしくはほぼ同時に切り換える機能を備えた請求項2記載検査兼用潤滑油供給装置。 The control means stores the air leak tolerance limit standard of the reduction gear built-in room, and determines whether the air leakage of the hydraulic drive unit with a reduction gear to be inspected is within the air leak tolerance limit standard, The lubricating oil supply for inspection and use according to claim 2, further comprising a function of switching the air release electromagnetic switching valve and the lubricating oil supply electromagnetic switching valve simultaneously or substantially simultaneously when it is determined that the air leakage is within the air leakage allowable limit standard. apparatus. 上記制御手段は、手動操作でエア開放電磁切換弁および潤滑油供給用電磁切換弁の開閉を制御する構成にした請求項2記載検査兼用潤滑油供給装置。 3. The lubricating oil supply apparatus for inspection and use according to claim 2 , wherein the control means is configured to control opening and closing of the air release electromagnetic switching valve and the lubricating oil supply electromagnetic switching valve by manual operation. 上記密閉手段は、モータ組込み室と減速機組込み室とを連通させる軸受装着孔のみを密閉する構成にした請求項1〜4のいずれかに記載の検査兼用潤滑油供給装置。   The inspection and lubricating oil supply device according to any one of claims 1 to 4, wherein the sealing means is configured to seal only a bearing mounting hole that allows the motor built-in chamber and the reducer built-in chamber to communicate with each other.
JP2008011085A 2008-01-22 2008-01-22 Lubricating oil supply system for inspection and hydraulic drive unit with reduction gear Active JP5112088B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008011085A JP5112088B2 (en) 2008-01-22 2008-01-22 Lubricating oil supply system for inspection and hydraulic drive unit with reduction gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008011085A JP5112088B2 (en) 2008-01-22 2008-01-22 Lubricating oil supply system for inspection and hydraulic drive unit with reduction gear

Publications (2)

Publication Number Publication Date
JP2009174567A JP2009174567A (en) 2009-08-06
JP5112088B2 true JP5112088B2 (en) 2013-01-09

Family

ID=41029875

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008011085A Active JP5112088B2 (en) 2008-01-22 2008-01-22 Lubricating oil supply system for inspection and hydraulic drive unit with reduction gear

Country Status (1)

Country Link
JP (1) JP5112088B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103604565A (en) * 2013-11-26 2014-02-26 沈阳黎明航空发动机(集团)有限责任公司 Hydraulic seal and hydraulic movement testing device for aero-engine assembly field

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104950345A (en) * 2015-06-09 2015-09-30 安庆卡尔特压缩机有限公司 Tool for detecting oil hole of compressor
CN107202683A (en) * 2017-05-31 2017-09-26 天津英创汇智汽车技术有限公司 Hydraulic control unit low-pressure performance detection method, device and system in automobile ESC

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0818637B2 (en) * 1987-02-27 1996-02-28 本田技研工業株式会社 Method and device for injecting engine oil
JPH07305746A (en) * 1994-05-10 1995-11-21 Kayaba Ind Co Ltd Hydraulic drive device for reduction gear

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103604565A (en) * 2013-11-26 2014-02-26 沈阳黎明航空发动机(集团)有限责任公司 Hydraulic seal and hydraulic movement testing device for aero-engine assembly field
CN103604565B (en) * 2013-11-26 2016-01-20 沈阳黎明航空发动机(集团)有限责任公司 A kind of aeromotor erecting yard hydraulic seal and hydraulic operation test unit

Also Published As

Publication number Publication date
JP2009174567A (en) 2009-08-06

Similar Documents

Publication Publication Date Title
CN102575779B (en) Gate valve
US8746658B2 (en) Coaxial valve with an electric drive
CN101918721B (en) Block and bleed valve assembly
EP1593893A1 (en) Emergency valve
JP5112088B2 (en) Lubricating oil supply system for inspection and hydraulic drive unit with reduction gear
WO2019021958A1 (en) Pump and sealing system
JP4629636B2 (en) Rotary seal mechanism and rotary joint in fluid feed mechanism
JP2011231924A (en) Hydraulic circuit, stop valve used therein and maintenance method of hydraulic circuit
KR100897409B1 (en) Testing Equipment For Seal Ring And Oil Pump Housing
KR100897410B1 (en) Leakage Detection Equipment For Seal Ring On Steel Ring Of Oil Pump
JP5042046B2 (en) Leak inspection method for hydraulic drive unit with reduction gear
JP2015152103A (en) shovel and turning speed reducer
JP5422568B2 (en) Filler distributor
JP2011032812A (en) Center joint and working machine
CN201274257Y (en) Connecting apparatus for checking gas density relay
WO2021246214A1 (en) Fluid control device
CN103339389A (en) Electrofluidic control device
KR100844006B1 (en) Leakage detection equipment for steel ring of oil pump
JP2008075724A (en) Spindle device
JPH11325223A (en) Hydraulic motor device with reduction gear
JP5301510B2 (en) Hydraulic motor
EP0905378A1 (en) Electric pump apparatus
JP2013504005A (en) Control device for hydraulic motor
CN216594159U (en) Clutch endurance testing device and clutch endurance testing system
KR101925793B1 (en) Rotary vane motor with circulating flow path

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20101227

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110722

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120328

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120605

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120806

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20120911

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20121010

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20151019

Year of fee payment: 3

R151 Written notification of patent or utility model registration

Ref document number: 5112088

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20151019

Year of fee payment: 3

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350