JP2564369Y2 - Pneumatic underwater propulsion device - Google Patents
Pneumatic underwater propulsion deviceInfo
- Publication number
- JP2564369Y2 JP2564369Y2 JP6553492U JP6553492U JP2564369Y2 JP 2564369 Y2 JP2564369 Y2 JP 2564369Y2 JP 6553492 U JP6553492 U JP 6553492U JP 6553492 U JP6553492 U JP 6553492U JP 2564369 Y2 JP2564369 Y2 JP 2564369Y2
- Authority
- JP
- Japan
- Prior art keywords
- air motor
- compressed air
- support flange
- propulsion
- attached
- 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.)
- Expired - Lifetime
Links
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- General Details Of Gearings (AREA)
- Retarders (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は水中遊泳時に使用する推
進装置に係り、特にボンベの圧縮空気を利用してエアー
モータを駆動し、エアーモータの出力軸とは別体かつ同
芯の推進軸に取り付けたスクリューを回転させて進行す
る空圧式水中推進装置に関する物である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a propulsion device used for swimming underwater, and in particular, drives an air motor using compressed air of a cylinder, and is separate and concentric with the output shaft of the air motor. The present invention relates to a pneumatic underwater propulsion device that advances by rotating a screw attached to a watercraft.
【０００２】[0002]
【従来の技術】ボンベの圧縮空気を利用してエアーモー
タを駆動してスクリューを回転させる推進装置は、特開
昭６３ー１７１９６号に開示されている。しかしその物
には次のような不具合がある。 １． エアーモータは通常その回転羽根（ベーン）の出
入り部分とシリンダーとの接触部分に潤滑を必要とす
る。この為適量の潤滑剤を運転前に回転羽根の部分に供
給するか、或いは圧縮空気中に潤滑油を混ぜて送り込む
方式とする為、回転羽根の駆動を完了した含油空気が海
水流入防止弁から直接海水中に放出されることになり、
海洋汚染の点から好ましくない。 ２． エアーモータの出力軸をそのままスクリューの取
付推進軸としている為、推進に見合う駆動トルクを得よ
うとするとエアーモータの回転羽根を大きくしなければ
ならないが、大きくすれば空気消費量が大きくなり、１
本のボンベ（例えば容量１４ｌ、注入圧力２００kg／cm
2）の使用可能時間が例えば５分とか、極端に短くな
り、実用的でない。又出力軸と推進軸を共用している
為、スクリューに異物が噛んでスクリューが損傷した
時、交換経費が高くなる。 ３． 遊泳中常時使用する物でなく、不使用時もある。
この不使用時に水圧によりエアーモータ内にメタルを通
して海水が浸入し、回転不能になる恐れがある。2. Description of the Related Art A propulsion device for rotating a screw by driving an air motor using compressed air in a cylinder is disclosed in Japanese Patent Application Laid-Open No. 63-17196. However, it has the following disadvantages. 1. An air motor usually requires lubrication at the portion where the rotating vanes (vanes) come in and out of contact with the cylinder. For this reason, an appropriate amount of lubricant is supplied to the rotating blades before operation, or lubricating oil is mixed in compressed air and sent to the system. Will be released directly into seawater,
It is not preferable from the viewpoint of marine pollution. 2. Since the output shaft of the air motor is used directly as the screw mounting propulsion shaft, in order to obtain a driving torque suitable for propulsion, the rotating blades of the air motor must be enlarged.
Bottle (for example, capacity 14 l, injection pressure 200 kg / cm
2 ) The usable time is extremely short, for example, 5 minutes, which is not practical. In addition, since the output shaft and the propulsion shaft are shared, when a screw is damaged due to foreign matter biting into the screw, replacement cost increases. 3. It is not always used during swimming and sometimes not used.
At the time of non-use, seawater may enter the air motor through the metal due to the water pressure and may not be able to rotate.
【０００３】[0003]
【考案の目的】第１の考案は回転羽根の駆動を完了した
含油空気が直接海水中に放出されることを防止し、１本
のボンベの使用可能時間を増し、エアーモータ内への海
水の浸入を防止し、製作とメンテナンスを容易にするこ
とを目的としている。第２の考案は簡単に潤滑油を供給
できるようにすると共に、使用済みの含油空気中の油分
をより確実に分離回収できるようにすることを目的とし
ている。[Purpose of the Invention] The first invention prevents oil-impregnated air that has completed the driving of the rotating blades from being directly discharged into seawater, increases the usable time of one cylinder, and allows seawater to flow into the air motor. The purpose is to prevent intrusion and to facilitate production and maintenance. A second object of the present invention is to make it possible to easily supply lubricating oil and to make it possible to more reliably separate and recover the oil content in the used oil-containing air.
【０００４】[0004]
【考案の構成】第１の考案はエアーモータ収納筒１７の
一端側に圧縮空気の入口１８ａと出口１８ｂを有する盲
フランジ１８を、他端側には固定環１６により固定され
た支持フランジ１５を夫々水密に取り付け、上記支持フ
ランジ１５の一端側に遊星歯車減速装置８を介してエア
ーモータ１を取り付けると共に、上記支持フランジ１５
より他端側に延びる筒状部１５ａ内に間隔を隔てた２個
の軸受１６ａ、１６ｂに支承されかつ他端側にスクリュ
ー９を取り付けた推進軸１０を設け、この推進軸１０の
一端側を上記遊星歯車減速装置８の出力軸１３と着脱自
在で相対回転不能かつ一体回転可能に係合させ、推進軸
１０と支持フランジ筒状部１５ａの他端部間にはシール
パッキン２７を介在させ、エアーモータ１の排気口７を
エアーモータ収納筒１７の内壁面１７ａに向い開放し、
上記出口１８ｂの下流側に逆止弁２０を配置したことを
特徴とする空圧式水中推進装置である。According to the first invention, a blind flange 18 having a compressed air inlet 18a and an outlet 18b is provided at one end of an air motor housing 17 and a support flange 15 fixed by a fixed ring 16 is provided at the other end. The air motor 1 is attached to one end of the support flange 15 via a planetary gear reduction device 8, and the support flange 15
A propulsion shaft 10 which is supported by two spaced bearings 16a and 16b and has a screw 9 attached to the other end is provided in a cylindrical portion 15a extending further to the other end. The output shaft 13 of the planetary gear reduction device 8 is detachably engaged with the output shaft 13 so as to be relatively non-rotatable and integrally rotatable, and a seal packing 27 is interposed between the propulsion shaft 10 and the other end of the support flange cylindrical portion 15a. The exhaust port 7 of the air motor 1 is opened toward the inner wall surface 17a of the air motor housing 17 and opened.
A pneumatic underwater propulsion device characterized in that a check valve 20 is arranged downstream of the outlet 18b.
【０００５】第２の考案は圧縮空気の入口１８ａ又は入
口１８ａに至る配管２５上に潤滑油供給口２６を設け、
圧縮空気の出口１８ｂの上流側のエアーモータ収納筒１
７の内部にフィルター２３を設けた請求項１に記載の空
圧式水中推進装置である。The second invention is to provide a lubricating oil supply port 26 on a compressed air inlet 18a or on a pipe 25 reaching the inlet 18a,
Air motor storage cylinder 1 on the upstream side of compressed air outlet 18b
The pneumatic underwater propulsion device according to claim 1, wherein a filter (23) is provided inside of (7).
【０００６】[0006]
【実施例】図１、図３において、１はエアーモータで、
外筒２、シリンダ３、回転出力軸４、回転出力軸４とシ
リンダ３の間で圧縮空気のシールをする回転羽根５等か
ら成り、圧縮空気入口６から圧縮空気を流入させれば回
転出力軸４が一定方向に回転する公知の物である。尚７
は排気口、４ａは回転出力軸４の後端（他端の一例）に
設けた歯車、８は上記歯車４ａからの回転を入力とする
遊星歯車減速装置で、その出力軸１３に設けた後方に向
い開いた六角穴１３ａ（図２）に、スクリュー９を後端
部に取り付けた推進軸１０の前端（一端の一例）の六角
形成部１０ａが着脱自在に嵌合している。従って出力軸
１３と推進軸１０は相対回転不能かつ一体回転可能であ
る。1 and 3, reference numeral 1 denotes an air motor,
It comprises an outer cylinder 2, a cylinder 3, a rotary output shaft 4, a rotary blade 5 for sealing compressed air between the rotary output shaft 4 and the cylinder 3, and the like. Reference numeral 4 denotes a known object that rotates in a certain direction. 7
Is an exhaust port, 4a is a gear provided at the rear end (an example of the other end) of the rotary output shaft 4, 8 is a planetary gear reduction device that receives rotation from the gear 4a as an input, A hexagonal hole 13a (FIG. 2) opening toward the front side is detachably fitted with a hexagonal forming portion 10a at the front end (one example of one end) of the propulsion shaft 10 to which the screw 9 is attached at the rear end. Therefore, the output shaft 13 and the propulsion shaft 10 cannot rotate relative to each other and can rotate integrally.
【０００７】遊星歯車減速装置８は、内歯歯車１１（イ
ンターナルギアー）に出力軸１３のケ−ジ部１３ｂにピ
ン２７を介して取り付けた遊星歯車１２が噛み合い、遊
星歯車１２が中央の歯車４ａにも噛みあって減速する公
知の機構である。１４は外筒２の後端内面の螺子２ａに
螺合した端部フランジ、１５は端部フランジ１４を取り
付ける支持フランジで、支持フランジ１５の中心には推
進軸１０が貫通している。推進軸１０は支持フランジ１
５の筒状部１５ａに前後方向の一定距離を保って軸受１
６ａ、１６ｂにより回転可能に軸支されている。推進軸
１０と出力軸４の軸線は一致している。In the planetary gear reducer 8, a planetary gear 12 attached to a cage 13b of an output shaft 13 via a pin 27 meshes with an internal gear 11 (internal gear), and the planetary gear 12 is a central gear. This is a well-known mechanism that also engages with 4a to decelerate. Reference numeral 14 denotes an end flange screwed to the screw 2a on the inner surface of the rear end of the outer cylinder 2, and reference numeral 15 denotes a support flange for attaching the end flange 14, and a propulsion shaft 10 passes through the center of the support flange 15. Propulsion shaft 10 is support flange 1
5 while maintaining a certain distance in the front-rear direction with the cylindrical portion 15a of the bearing 1
It is rotatably supported by 6a and 16b. The axes of the propulsion shaft 10 and the output shaft 4 coincide.
【０００８】１７はエアーモータ収納筒で、その前端
（一端側）には、圧縮空気の入口１８ａ、出口１８ｂを
螺設した盲フランジ１８がＯリング１８ｃにより水密に
嵌合して、抜止めねじ１８ｄにより固定されている。エ
アーモータ収納筒１７の後端部（他端側）には上記支持
フランジ１５がＯリング１５ｂにより水密に嵌合してい
る。１６は支持フランジ１５の固定環で、エアーモータ
収納筒１７の後端内面に設けた螺子１７ａに螺合して、
エアーモータ収納筒１７に設けた段付部１７ｂとにより
支持フランジ１５の軸方向前方への移動を阻止してい
る。２７は支持フランジ１５と上記推進軸１０とを水密
に保ちかつスクリュー９の近傍に設けたシールパッキン
である。Reference numeral 17 denotes an air motor accommodating cylinder. A blind flange 18 having a compressed air inlet 18a and an outlet 18b screwed on its front end (one end side) by an O-ring 18c in a watertight manner. 18d. The support flange 15 is fitted to the rear end (the other end side) of the air motor housing 17 in a watertight manner by an O-ring 15b. Reference numeral 16 denotes a fixed ring of the support flange 15, which is screwed into a screw 17a provided on the inner surface of the rear end of the air motor housing 17,
The stepped portion 17b provided on the air motor housing 17 prevents the support flange 15 from moving forward in the axial direction. Reference numeral 27 denotes a seal packing provided near the screw 9 while keeping the support flange 15 and the propulsion shaft 10 watertight.
【０００９】１９はスクリュー９の抜止め環で、推進軸
１０の後端部に設けた螺子１０ｂと螺合しており、回り
止めねじ２８により固定されている。推進軸１０の直径
方向の孔２９に嵌合したピン３０の上下突出端部は、ス
クリュー９の中央のボス９ａの内面に圧入固定されてい
る軸受３１の前端の直径方向の溝３１ａに嵌合し、これ
により推進軸１０とスクリュー９は一体回転可能となっ
ている。２０は圧縮空気の出口１８ｂに直接、又は配管
３３を介して取り付けた逆止弁で、矢印Ａ方向の流通の
みを許し、即ち海水の逆Ａ方向の流入を防止する方向に
取り付けてある。２２は圧縮空気の入口１８ａか、又は
入口１８ａに至る圧縮空気供給配管２５の途中の潤滑油
供給口２６から分岐した潤滑油供給配管３４上に設けた
潤滑油供給開閉弁である。尚排気の含油分を更に効果的
に除去する為に、多孔質金属、紙、ワイア等より成るフ
ィルター２３をエアーモータ収納筒１７内の圧縮空気出
口１８ｂの上流端に設けている。Reference numeral 19 denotes a retaining ring for the screw 9, which is screwed with a screw 10 b provided at the rear end of the propulsion shaft 10, and fixed by a detent screw 28. The vertically protruding ends of the pins 30 fitted in the diametric holes 29 of the propulsion shaft 10 fit into the diametric grooves 31a at the front end of the bearing 31 which is press-fitted and fixed to the inner surface of the central boss 9a of the screw 9. Thus, the propulsion shaft 10 and the screw 9 can rotate integrally. Reference numeral 20 denotes a check valve attached directly to the outlet 18b of the compressed air or via a pipe 33, which allows only the flow in the direction of arrow A, that is, is installed in a direction for preventing the inflow of seawater in the direction A. Reference numeral 22 denotes a lubricating oil supply opening / closing valve provided on a lubricating oil supply pipe 34 branched from a lubricating oil supply port 26 in the compressed air inlet pipe 18 or the compressed air supply pipe 25 reaching the inlet 18a. A filter 23 made of porous metal, paper, wire, or the like is provided at the upstream end of the compressed air outlet 18b in the air motor housing 17 in order to more effectively remove the oil content of the exhaust gas.
【００１０】ボンベ（図示せず）からの圧縮空気は流量
調節弁（図示せず）を有する配管２５を経て入口１８ａ
に導かれ、内部配管２１を経て圧縮空気入口６からエア
ーモータ１に流入して回転出力軸４を駆動し、遊星歯車
減速装置８で適度の回転数に減速し（回転トルクは増加
する）、推進軸１０に伝達されてスクリュー９を回転す
る。[0010] Compressed air from a cylinder (not shown) passes through a pipe 25 having a flow control valve (not shown) through an inlet 18a.
And flows into the air motor 1 from the compressed air inlet 6 through the internal pipe 21 to drive the rotation output shaft 4, and the planetary gear reduction device 8 reduces the rotation to an appropriate number of rotations (rotation torque increases). The screw 9 is rotated by being transmitted to the propulsion shaft 10.
【００１１】潤滑油を供給する時は、開閉弁２２を開け
て、油差し等で潤滑油を配管３４、２５、２１内に供給
し、次いで開閉弁２２を閉じて圧縮空気を供給すればエ
アーモータ１内に潤滑油が供給される。尚開閉弁２２の
代わりに盲プラグを採用することもできる。When supplying the lubricating oil, the on-off valve 22 is opened, the lubricating oil is supplied into the pipes 34, 25, 21 by means of a lug or the like, and then the on-off valve 22 is closed and compressed air is supplied. Lubricating oil is supplied into the motor 1. In addition, a blind plug may be used instead of the on-off valve 22.
【００１２】[0012]
【考案の効果】（１） 第１の考案によると、エアーモ
ータ１の排気をエアーモータ収納筒１７の内壁面１７ａ
に一度衝突させる為、空気中の油分をエアーモータ収納
筒１７の内壁面１７ａに付着捕獲することができ、エア
ーモータ収納筒１７内の広い空間をフィルター２３側へ
移動する間に空気中の油分がその自重によりほとんど落
下して分離され、油分の海水への直接流出を可及的に防
止することができる。[Effects of the Invention] (1) According to the first invention, the exhaust of the air motor 1 is performed by the inner wall surface 17a of the air motor housing 17.
Once, the oil content in the air can be adhered and captured on the inner wall surface 17a of the air motor storage cylinder 17, and the oil content in the air can be moved while moving to a large space in the air motor storage cylinder 17 toward the filter 23 side. Is almost dropped and separated by its own weight, and the oil can be prevented from flowing directly into seawater as much as possible.
【００１３】（２） 遊星歯車減速装置８を設けて回転
数を落としてトルクを増加させた為、ボンベの利用時間
を延長できる。出願人の実験では、推進力約６kg、回転
数９００rpm で、１４ｌボンベ、２００kg／cm2の圧縮
空気の連続使用で、約２０分持続した。(2) Since the planetary gear reducer 8 is provided to reduce the number of revolutions and increase the torque, the use time of the cylinder can be extended. In Applicants' experiments, a 14 liter cylinder, continuous use of 200 kg / cm 2 of compressed air at a propulsion force of about 6 kg and a rotation speed of 900 rpm lasted about 20 minutes.
【００１４】（３） エアーモータ１の出力軸４とスク
リュー９の推進軸１０とを分割させた為、製作もメンテ
ナンスも容易になる。又推進軸１０と支持フランジ筒状
部１５ａの他端部間にシールパッキン２７を介在させ、
出口１８ｂの下流側に逆止弁２０を配置したので、エア
ーモータ収納筒１７内への浸水を確実に防止することが
できる。圧力１０kg／cm2（水深では１００ｍに相当）
の実験槽で４８時間連続耐久実験を行ったが、内部への
浸水は見られなかった。(3) Since the output shaft 4 of the air motor 1 and the propulsion shaft 10 of the screw 9 are divided, production and maintenance are facilitated. A seal packing 27 is interposed between the propulsion shaft 10 and the other end of the support flange cylindrical portion 15a,
Since the check valve 20 is disposed on the downstream side of the outlet 18b, it is possible to reliably prevent water from entering the air motor housing 17. Pressure 10kg / cm 2 (corresponds to 100m at water depth)
The endurance test was carried out for 48 hours continuously in the test tank of No. 1, but no infiltration into the inside was observed.
【００１５】（４） 第２の考案によると、圧縮空気の
入口１８ａ又は入口１８ａに至る配管２５上に潤滑油供
給口２６を設けたので、給油の為に一々配管を外す手間
がなくなる。又圧縮空気の出口１８ｂの上流側のエアー
モータ収納筒１７の内部にフィルター２３を設けたの
で、排気中の油分の回収効率が一層向上する。(4) According to the second invention, since the lubricating oil supply port 26 is provided on the compressed air inlet 18a or on the pipe 25 reaching the inlet 18a, there is no need to remove the pipes one by one for oil supply. Further, since the filter 23 is provided inside the air motor housing 17 on the upstream side of the outlet 18b of the compressed air, the efficiency of collecting the oil in the exhaust gas is further improved.
【図１】 第１、第２の考案を採用した空圧式水中推進
装置の縦断側面図である。FIG. 1 is a longitudinal sectional side view of a pneumatic underwater propulsion device employing first and second inventions.
【図２】 図１のII−II断面部分図である。FIG. 2 is a partial sectional view taken along the line II-II of FIG.
【図３】 図１中のエアーモータと遊星歯車減速装置の
分解斜視図である。FIG. 3 is an exploded perspective view of the air motor and the planetary gear reduction device in FIG.
１ エアーモータ ７ 排気口 ８ 遊星歯車減速装置 ９ スクリュー １０ 推進軸 １３ 出力軸 １５ 支持フランジ １５ａ 筒状部 １６ 固定環 １６ａ 軸受 １６ｂ 軸受 １７ エアーモータ収納筒 １７ａ 内壁面 １８ 盲フランジ １８ａ 入口 １８ｂ 出口 ２０ 逆止弁 ２３ フィルター ２５ 配管 ２６ 潤滑油供給口 ２７ シールパッキン DESCRIPTION OF SYMBOLS 1 Air motor 7 Exhaust port 8 Planetary gear reduction device 9 Screw 10 Propulsion shaft 13 Output shaft 15 Support flange 15a Cylindrical part 16 Fixed ring 16a Bearing 16b Bearing 17 Air motor storage cylinder 17a Inner wall surface 18 Blind flange 18a Inlet 18b Exit 20 Reverse Stop valve 23 Filter 25 Piping 26 Lubricating oil supply port 27 Seal packing
Claims (2)
空気の入口１８ａと出口１８ｂを有する盲フランジ１８
を、他端側には固定環１６により固定された支持フラン
ジ１５を夫々水密に取り付け、上記支持フランジ１５の
一端側に遊星歯車減速装置８を介してエアーモータ１を
取り付けると共に、上記支持フランジ１５より他端側に
延びる筒状部１５ａ内に間隔を隔てた２個の軸受１６
ａ、１６ｂに支承されかつ他端側にスクリュー９を取り
付けた推進軸１０を設け、この推進軸１０の一端側を上
記遊星歯車減速装置８の出力軸１３と着脱自在で相対回
転不能かつ一体回転可能に係合させ、推進軸１０と支持
フランジ筒状部１５ａの他端部間にはシールパッキン２
７を介在させ、エアーモータ１の排気口７をエアーモー
タ収納筒１７の内壁面１７ａに向い開放し、上記出口１
８ｂの下流側に逆止弁２０を配置したことを特徴とする
空圧式水中推進装置。A blind flange having a compressed air inlet and an outlet at one end of an air motor housing.
A support flange 15 fixed by a fixing ring 16 is attached to the other end side in a watertight manner, and the air motor 1 is attached to one end side of the support flange 15 via a planetary gear reduction device 8. Two bearings 16 spaced apart in a cylindrical portion 15a extending to the other end side
A propulsion shaft 10 is provided which is supported by a and 16b and has a screw 9 attached to the other end thereof. One end of the propulsion shaft 10 is detachably attached to the output shaft 13 of the planetary gear reduction device 8 so as to be relatively non-rotatable and integrally rotatable. And a seal packing 2 between the propulsion shaft 10 and the other end of the support flange tubular portion 15a.
7, the exhaust port 7 of the air motor 1 is opened toward the inner wall surface 17 a of the air motor housing 17, and
A pneumatic underwater propulsion device characterized in that a check valve 20 is arranged downstream of 8b.
至る配管２５上に潤滑油供給口２６を設け、圧縮空気の
出口１８ｂの上流側のエアーモータ収納筒１７の内部に
フィルター２３を設けた請求項１に記載の空圧式水中推
進装置。2. A lubricating oil supply port 26 is provided on a compressed air inlet 18a or on a pipe 25 leading to the inlet 18a, and a filter 23 is provided inside the air motor housing 17 on the upstream side of the compressed air outlet 18b. Item 2. The pneumatic underwater propulsion device according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6553492U JP2564369Y2 (en) | 1992-09-21 | 1992-09-21 | Pneumatic underwater propulsion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6553492U JP2564369Y2 (en) | 1992-09-21 | 1992-09-21 | Pneumatic underwater propulsion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0627496U JPH0627496U (en) | 1994-04-12 |
| JP2564369Y2 true JP2564369Y2 (en) | 1998-03-09 |
Family
ID=13289782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6553492U Expired - Lifetime JP2564369Y2 (en) | 1992-09-21 | 1992-09-21 | Pneumatic underwater propulsion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2564369Y2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040003369A (en) * | 2002-07-02 | 2004-01-13 | 삼성중공업 주식회사 | Water-resisted 3-axles moving device |
| KR100932190B1 (en) * | 2007-11-29 | 2009-12-16 | 부산대학교 산학협력단 | Underwater Propulsion System of Small Unmanned Submersible |
| KR101219626B1 (en) * | 2010-10-04 | 2013-01-08 | 박태규 | Motor integrated impeller type propulsion device for water scooter driving under water |
| KR101278048B1 (en) * | 2011-03-31 | 2013-06-24 | 박태규 | One body type water jet electric propulsion device |
| CN113859487B (en) * | 2021-09-30 | 2024-05-03 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Full-sea-depth self-adaptive pipeline and deep sea equipment |
-
1992
- 1992-09-21 JP JP6553492U patent/JP2564369Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0627496U (en) | 1994-04-12 |
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