JPS6267331A - Hydraulic coupling - Google Patents
Hydraulic couplingInfo
- Publication number
- JPS6267331A JPS6267331A JP20424485A JP20424485A JPS6267331A JP S6267331 A JPS6267331 A JP S6267331A JP 20424485 A JP20424485 A JP 20424485A JP 20424485 A JP20424485 A JP 20424485A JP S6267331 A JPS6267331 A JP S6267331A
- Authority
- JP
- Japan
- Prior art keywords
- fusible
- temperature
- fusible metal
- metal
- hydraulic oil
- 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.)
- Granted
Links
Landscapes
- Arrangement And Driving Of Transmission Devices (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
Description
【発明の詳細な説明】 〔発明の利用分野〕 本発明は可溶栓を備えた流体継手に関するものである。[Detailed description of the invention] [Field of application of the invention] The present invention relates to a fluid coupling with a fusible plug.
従来の可溶栓は第３図に示す構造となっている。 A conventional fusible plug has a structure shown in FIG.
この可溶栓５では可溶金属１３の飛び出し方向（図示矢
印入方向）と可溶金属自体の遠心力の方向及び作動油の
遠心圧力（図示矢印Ｂ方向）の作用方向が同一線上にあ
るため、可溶金属１３自体の遠心力及び作動油の遠心圧
力が可溶金属１３の抜き出し力として作用している。−
力筒４図に示すように可溶金属１３の耐力は温度の上昇
と共に低下する・このため、従来の可溶栓５し±所定の
温度（可溶金属の飛び出しを期待する設計値）に達する
以前に可溶金ａ１３が飛び出してしまい１作動油の排出
による出力回転数の低下を引き起すなどの問題点を有し
ていた。In this fusible plug 5, the direction in which the fusible metal 13 pops out (in the direction of the arrow shown in the figure), the direction of the centrifugal force of the fusible metal itself, and the acting direction of the centrifugal pressure of the hydraulic oil (the direction of the arrow B in the figure) are on the same line. The centrifugal force of the fusible metal 13 itself and the centrifugal pressure of the hydraulic oil act as a force for extracting the fusible metal 13. −
As shown in Figure 4, the yield strength of the fusible metal 13 decreases as the temperature rises.For this reason, the conventional fusible plug 5 reaches a predetermined temperature (a design value that is expected to cause the fusible metal to pop out). Previously, there were problems such as fusible gold A13 flying out and causing a decrease in output rotational speed due to discharge of hydraulic oil.
尚、可溶栓（図示せず）を備えた流体継手としては、例
えば特開昭５６−６３１３０号公報がある。An example of a fluid coupling equipped with a fusible plug (not shown) is disclosed in Japanese Patent Application Laid-Open No. 56-63130.
本発明の目的は、可溶金属が所定温度以前に飛び出すこ
とにより発生する出力軸回転数の低下を防止するように
した流体継手を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a fluid coupling that prevents a decrease in the rotational speed of an output shaft caused by fusible metal jumping out before a predetermined temperature.
可溶栓に充填する可溶金属は、軸受のバビット等と同様
に、鉛系、錫系、鉛と錫等の合金が使用される。これら
の金属は溶融に至るまでの過程で温度の上昇と共に機械
的強度（ここでは圧縮応力）が漸減する傾向にある。こ
のため外力が作用している場合、所定の温度以下で可溶
栓から脱落しないようにする必要性があった。この問題
点を解決するために可溶枠に充填される可溶金属の飛び
出し通路をＬ字状に形成したものである。As the fusible metal filled in the fusible plug, lead-based, tin-based, or alloys of lead and tin are used, similar to Babbitt for bearings. The mechanical strength (compressive stress in this case) of these metals tends to gradually decrease as the temperature increases during the process leading to melting. Therefore, when an external force is applied, it is necessary to prevent the plug from falling off the fusible plug at a temperature below a predetermined temperature. In order to solve this problem, the passage for the fusible metal filled into the fusible frame is formed in an L-shape.
以下、本発明の一実施例を第１図により説明する。第１
図に示す流体継手において、入力軸１の回転数Ｎ１．即
ちインペラ９の回転数Ｎｌはケース１２により形成され
る作動室８の中に充填される作動油７の量をすくい管３
で調整することによってランナ１０、即ち出力軸２の回
転数Ｎ２が得られる。このときすくい管３ですくわれた
作動油７は閉回路に設けられた油冷却器１１で冷却され
再び作動室８へ供給される。第２図は本発明の可溶枠の
構造を示すもので、１４は可溶枠５に充填されている可
溶金属１３が所定温度に達したとき外部へ飛び出すため
のＬ字状の通路で、この通路１４は、可溶金属１３が作
動油の遠心力および可溶金属自体の遠心力に抗するよう
に形成されている。前記閉回路において作動油７の温度
は温度計６により監視される。この流体継手において過
負荷により発熱量が増加し油冷却器１１の冷却能力をオ
ーバージた時、あるいは油冷却器１１が故障した場合に
は、作動油７の温度は異常に上昇する。An embodiment of the present invention will be described below with reference to FIG. 1st
In the fluid coupling shown in the figure, the rotational speed N1 of the input shaft 1. That is, the rotation speed Nl of the impeller 9 is determined by the amount of hydraulic oil 7 filled in the working chamber 8 formed by the case 12.
The rotational speed N2 of the runner 10, that is, the output shaft 2, can be obtained by adjusting. At this time, the hydraulic oil 7 scooped up by the scoop pipe 3 is cooled by an oil cooler 11 provided in a closed circuit and supplied to the working chamber 8 again. FIG. 2 shows the structure of the fusible frame of the present invention, and 14 is an L-shaped passage through which the fusible metal 13 filled in the fusible frame 5 jumps out when it reaches a predetermined temperature. This passage 14 is formed so that the fusible metal 13 resists the centrifugal force of the hydraulic oil and the centrifugal force of the fusible metal itself. In the closed circuit, the temperature of the hydraulic oil 7 is monitored by a thermometer 6. When the amount of heat generated in this fluid coupling increases due to overload and exceeds the cooling capacity of the oil cooler 11, or when the oil cooler 11 breaks down, the temperature of the hydraulic oil 7 rises abnormally.
作動油７の一温度上昇は温度計６により検知されるが処
置の遅れによりさらに温度が上昇した場合でも所定温度
に達すると回転ケーシング１２に設ｉ−＋られた可溶枠
５の可溶金属１３が通路１４を介して飛び出し高温にな
ったのみ作動油７が排出されるため、出力軸回転数を低
下することなく回転体内部の油焼は等を防止する。本実
施例によれば、従来、通常運転時（温度約９０℃、回転
周速１５０ｍ／Ｓ〜２００ｍ／Ｓ）において、可溶枠５
から可溶金属１３が飛び出していたが、運転中の実測温
度１３０℃においても、可溶金属１３の飛び出さないこ
とが確認された。ここで１３０ ’Ｃの温度は緊急停止
設定温度である。また、この場合使用した可溶金属１３
の融点は１８０℃である。A temperature rise in the hydraulic oil 7 is detected by the thermometer 6, but even if the temperature rises further due to a delay in treatment, when the predetermined temperature is reached, the fusible metal of the fusible frame 5 installed in the rotating casing 12 Since the hydraulic oil 7 is discharged only when the oil 13 jumps out through the passage 14 and reaches a high temperature, oil burning inside the rotating body is prevented without reducing the output shaft rotational speed. According to this embodiment, conventionally, during normal operation (temperature of about 90° C., circumferential rotation speed of 150 m/S to 200 m/S), the fusible frame 5
It was confirmed that the fusible metal 13 did not fly out even at the actual temperature of 130° C. during operation. Here, the temperature of 130'C is the emergency stop setting temperature. In addition, the fusible metal 13 used in this case
The melting point of is 180°C.
本発明の流体継手によれば、可溶枠に充填される可溶金
属の飛び出し通路をＬ字状に形成し、可溶金属が作動油
の遠心力および可溶金属自体の遠心力に抗するようにし
たので、可溶金属は所定の温度に達したときのみ可溶枠
から飛び出すことができるため、回転体内部の油焼けな
どを防止することは勿論、作動油の排出に゛よる回転数
の低下を防止することができる。According to the fluid coupling of the present invention, the passage through which the fusible metal filled in the fusible frame pops out is formed in an L-shape, so that the fusible metal resists the centrifugal force of the hydraulic oil and the centrifugal force of the fusible metal itself. This allows the fusible metal to jump out of the fusible frame only when it reaches a predetermined temperature, which not only prevents oil burns inside the rotating body but also reduces the rotational speed by draining the hydraulic oil. It is possible to prevent a decrease in
第１図は流体継手の構造とその作動油系統を示す図、第
２図は本発明の流体継手における可溶枠の構造を示す図
、第３図は従来の可溶枠の構造を示す図、第４図は可溶
金属の温度と耐力の関係の一例を示す図である。
３・・・すくい管、５・・・可溶枠、８・・作動室、９
・・・インペラ、１０・・・ランナ、１３・・・可溶金
属、１４・・・通路。
２．／−Fig. 1 is a diagram showing the structure of a fluid coupling and its hydraulic oil system, Fig. 2 is a diagram showing the structure of a fusible frame in the fluid coupling of the present invention, and Fig. 3 is a diagram showing the structure of a conventional fusible frame. , FIG. 4 is a diagram showing an example of the relationship between temperature and proof stress of a fusible metal. 3... scoop pipe, 5... fusible frame, 8... working chamber, 9
... Impeller, 10... Runner, 13... Fusible metal, 14... Passage. 2. /-
Claims (1)
作動室内の作動油を排出する可溶栓を備えた流体継手に
おいて、前記可溶栓に充填される可溶金属の飛び出し通
路をＬ字状に形成したことを特徴とする流体継手。In a fluid coupling equipped with a fusible plug that melts the fusible metal and discharges the hydraulic oil in the working chamber when the temperature of the hydraulic oil rises abnormally, a passage for the fusible metal filled in the fusible plug to pop out is provided. A fluid coupling characterized by being formed into an L-shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20424485A JPS6267331A (en) | 1985-09-18 | 1985-09-18 | Hydraulic coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20424485A JPS6267331A (en) | 1985-09-18 | 1985-09-18 | Hydraulic coupling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6267331A true JPS6267331A (en) | 1987-03-27 |
| JPH0375776B2 JPH0375776B2 (en) | 1991-12-03 |
Family
ID=16487237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20424485A Granted JPS6267331A (en) | 1985-09-18 | 1985-09-18 | Hydraulic coupling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6267331A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH068178U (en) * | 1992-07-08 | 1994-02-01 | オージーケー技研株式会社 | Bicycle basket |
| DE102004012736A1 (en) * | 2004-03-15 | 2005-10-06 | A. Friedr. Flender Ag | Fuse for a hydrodynamic coupling |
| KR100740154B1 (en) | 2007-01-11 | 2007-07-16 | (주) 상용이엔지 | Fluid coupling with a safety pin |
| JP2012047305A (en) * | 2010-08-27 | 2012-03-08 | Mitsubishi Heavy Ind Ltd | Life extension plug for fusible plug |
| EP2634444A1 (en) * | 2012-02-29 | 2013-09-04 | Siemens Aktiengesellschaft | Closure with thermal safety function |
-
1985
- 1985-09-18 JP JP20424485A patent/JPS6267331A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH068178U (en) * | 1992-07-08 | 1994-02-01 | オージーケー技研株式会社 | Bicycle basket |
| DE102004012736A1 (en) * | 2004-03-15 | 2005-10-06 | A. Friedr. Flender Ag | Fuse for a hydrodynamic coupling |
| KR100740154B1 (en) | 2007-01-11 | 2007-07-16 | (주) 상용이엔지 | Fluid coupling with a safety pin |
| JP2012047305A (en) * | 2010-08-27 | 2012-03-08 | Mitsubishi Heavy Ind Ltd | Life extension plug for fusible plug |
| EP2634444A1 (en) * | 2012-02-29 | 2013-09-04 | Siemens Aktiengesellschaft | Closure with thermal safety function |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0375776B2 (en) | 1991-12-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| EXPY | Cancellation because of completion of term |