JPH0636322Y2 - Hydraulic booster - Google Patents
Hydraulic boosterInfo
- Publication number
- JPH0636322Y2 JPH0636322Y2 JP1987145752U JP14575287U JPH0636322Y2 JP H0636322 Y2 JPH0636322 Y2 JP H0636322Y2 JP 1987145752 U JP1987145752 U JP 1987145752U JP 14575287 U JP14575287 U JP 14575287U JP H0636322 Y2 JPH0636322 Y2 JP H0636322Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- oil
- booster
- hydraulic
- sub
- 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
Landscapes
- Fluid-Pressure Circuits (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Description
【考案の詳細な説明】 産業上の利用分野 本考案は、電気工事において電線圧着機等の高圧油工具
を作動させる油圧増圧器に関するものである。TECHNICAL FIELD The present invention relates to a hydraulic pressure booster for operating a high-pressure oil tool such as a wire crimping machine in electrical work.
従来の技術 切換弁によりブースタシリンダを制御して高圧油を吐出
する油圧増圧器は、例えば実開昭61-107182号公報に記
載されているように従来より公知である。2. Description of the Related Art A hydraulic pressure booster that controls a booster cylinder by a switching valve to discharge high-pressure oil is conventionally known as described in, for example, Japanese Utility Model Laid-Open No. 61-107182.
考案が解決しようとする問題点 しかし、従来の油圧増圧器は、任意の油圧工具を取付け
て使用するため等に油圧増圧器と油圧工具との間を急速
継手により着脱自在に取付けており、急速継手により油
圧増圧器と油圧工具とを着脱することによる油漏れ等に
より、ブースタシリンダの高圧吐出側油室の油が減少す
るという問題点があり、この問題を解決するために、ブ
ースタシリンダの高圧吐出側油室に油を補給するサブタ
ンクを設けても、サブタンクへの給油を定期的に行わな
くてはならず、また、油圧工具等によりサブタンク内の
油が汚れるので、サブタンク内の油を定期的に交換しな
くてはならないという問題があった。However, in the conventional hydraulic booster, a quick joint is detachably attached between the hydraulic booster and the hydraulic tool to attach and use an arbitrary hydraulic tool. There is a problem that oil in the high-pressure discharge side oil chamber of the booster cylinder decreases due to oil leakage etc. by attaching and detaching the hydraulic booster and hydraulic tool with a joint. Even if a sub-tank for replenishing the oil in the discharge side oil chamber is provided, it is necessary to supply oil to the sub-tank regularly.Because the oil in the sub-tank is contaminated by hydraulic tools, etc. There was a problem that they had to be replaced.
問題点を解決するための手段 本考案は、上記の問題点を解決するために、１次側シリ
ンダに１次側シリンダのシリンダロッドの伸縮により作
動する２次側シリンダを取付けたブースタシリンダを切
換弁により制御して、１次側シリンダを伸長させること
により２次側シリンダから高圧油を吐出する油圧増圧器
において、前記２次側シリンダの伸長側油室と縮小側油
室とをチェック弁を介して連通し、２次側シリンダの伸
長側油室にサブタンクを連結し、このサブタンクに油を
供給するとともにサブタンクの余剰油をリザーバに戻す
油圧循環回路を設けたものである。Means for Solving the Problems In order to solve the above problems, the present invention switches a booster cylinder in which a secondary side cylinder that operates by expansion and contraction of a cylinder rod of the primary side cylinder is attached to the primary side cylinder. In the hydraulic pressure booster that discharges high pressure oil from the secondary side cylinder by controlling the valve to extend the primary side cylinder, a check valve is provided for the extension side oil chamber and the contraction side oil chamber of the secondary side cylinder. A sub-tank is connected to the extension-side oil chamber of the secondary cylinder, and a hydraulic circulation circuit is provided to supply oil to the sub-tank and return excess oil from the sub-tank to the reservoir.
作用 上記の構成により、サブタンクには油圧循環回路により
油が供給されるとともに、サブタンク内の余剰油をリザ
ーバに戻すので、サブタンク内の油量が一定に保たれる
とともに、サブタンク内の油が循環して油の汚れを防止
する。Operation With the above configuration, oil is supplied to the sub tank by the hydraulic circulation circuit, and excess oil in the sub tank is returned to the reservoir, so that the oil amount in the sub tank is kept constant and the oil in the sub tank circulates. To prevent oil stains.
実施例 以下、図面により本考案の実施例について説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
（１）は油圧源、（２）は油圧増圧器であり、油圧源
（１）はリザーバ（３）、ポンプ（４）、ポンプ（４）
を駆動するモータ（５）を有し、ポンプ（４）からの吐
出管路（８）とリザーバ（３）への戻り管路（９）は切
換弁（６）を介して油圧増圧器（２）に設けた電磁切換
弁（７）に連通されている。電磁切換弁（７）は、１次
側シリンダ（11）に１次側シリンダ（11）のシリンダロ
ッドの伸縮により作動する２次側シリンダ（12）を取付
けたブースタシリンダ（10）の１次側シリンダ（11）の
伸長側及び縮小側油室（a,b）に管路（13,14）で連結さ
れ、高圧を吐出する２次側シリンダ（12）の縮小側油室
（ｄ）は急速継手（15）を介して油圧ホース（16）の一
端と連結され、この油圧ホース（16）の他端は急速継手
（17）を介して油圧工具のアクチュエータであるバネ付
単動シリンダ（18）に連結される。(1) is a hydraulic pressure source, (2) is a hydraulic pressure booster, and the hydraulic pressure source (1) is a reservoir (3), a pump (4), a pump (4).
A discharge line (8) from the pump (4) and a return line (9) to the reservoir (3) have a motor (5) for driving the hydraulic pressure booster (2) via a switching valve (6). ) Is connected to the electromagnetic switching valve (7). The electromagnetic switching valve (7) is a primary side of a booster cylinder (10) in which a secondary side cylinder (12) that operates by expansion and contraction of the cylinder rod of the primary side cylinder (11) is attached to the primary side cylinder (11). The compression side oil chamber (d) of the secondary side cylinder (12), which is connected to the expansion side and contraction side oil chambers (a, b) of the cylinder (11) by pipe lines (13, 14) and discharges high pressure, is rapidly One end of a hydraulic hose (16) is connected through a joint (15), and the other end of the hydraulic hose (16) is connected through a quick joint (17) to a spring-loaded single-acting cylinder (18) that is an actuator of a hydraulic tool. Connected to.
ブースタシリンダ（10）の２次側シリンダ（12）の伸長
側油室（ｃ）と縮小側油室（ｄ）はチェック弁（19）を
介して連通され、２次側シリンダ（12）の伸長側油室
（ｃ）には伸長側油室（ｃ）に油を供給するサブタンク
（20）が連結され、このサブタンク（20）は電磁切換弁
（７）の戻り管路（９）と管路（21）により絞り弁（2
2）を介して連結されるとともに、ドレーン管路（23）
によりリザーバ（３）に連結され、管路（21）とドレー
ン管路（23）とにより油圧循環回路が構成される。な
お、戻り管路（９）は管路（21）と比較して長いもので
あり、戻り管路（９）を流れる油は戻り管路（９）の管
路抵抗により背圧が高くなるため、戻り管路（９）を流
れる油の一部が管路（９）及び絞り弁（22）を介してサ
ブタンク（９）に供給される。The expansion side oil chamber (c) and the contraction side oil chamber (d) of the secondary side cylinder (12) of the booster cylinder (10) are communicated with each other through a check valve (19) and the secondary side cylinder (12) extends. A sub tank (20) for supplying oil to the extension side oil chamber (c) is connected to the side oil chamber (c), and this sub tank (20) is connected to the return pipe line (9) and the pipe line of the electromagnetic switching valve (7). (21) allows throttle valve (2
2) Connected via the drain pipe line (23)
Is connected to the reservoir (3), and a hydraulic circulation circuit is constituted by the pipeline (21) and the drain pipeline (23). The return pipe line (9) is longer than the pipe line (21), and the oil flowing through the return pipe line (9) has a high back pressure due to the pipe line resistance of the return pipe line (9). Part of the oil flowing through the return pipe (9) is supplied to the sub tank (9) via the pipe (9) and the throttle valve (22).
上記の構成により、切換弁（６）を切換えてポンプ
（４）より吐出された圧油を電磁切換弁（７）に供給す
ると、電磁切換弁（７）からリザーバ（３）へ戻る油の
一部が管路（21）及び絞り弁（22）を介してサブタンク
（20）に供給され、サブタンク（20）内の余剰油はドレ
ーン管路（23）を介してリザーバ（３）に戻されて、サ
ブタンク（20）内の油量を常に一定に保つとともに、サ
ブタンク（20）内の油を循環させて、サブタンク（20）
内の油の汚れを防止する。また、油圧工具の取換えや、
油圧ホース（16）の取換え等のために急速継手（15,1
7）を着脱することにより油が洩れて、ブースタシリン
ダ（10）の２次側シリンダ（12）の縮小側油室（ｄ）の
油量が減っても、サブタンク（20）の油が２次側シリン
ダ（12）の伸長側油室（ｃ）よりチェック弁（19）を介
して縮小側油室（ｄ）に供給されるので、２次側シリン
ダ（12）の縮小側油室（ｄ）の油量は、２次側シリンダ
（12）の縮小状態で一定に保たれる。With the above configuration, when the switching valve (6) is switched and the pressure oil discharged from the pump (4) is supplied to the electromagnetic switching valve (7), one of the oil returned from the electromagnetic switching valve (7) to the reservoir (3). Part is supplied to the sub-tank (20) via the pipe line (21) and the throttle valve (22), and excess oil in the sub-tank (20) is returned to the reservoir (3) via the drain pipe line (23). , The amount of oil in the sub-tank (20) is always kept constant, and the oil in the sub-tank (20) is circulated to make the sub-tank (20)
Prevent the oil inside from getting dirty. Also, changing hydraulic tools,
For quick replacement of hydraulic hose (16), etc.
Even if the oil volume in the reduction side oil chamber (d) of the secondary side cylinder (12) of the booster cylinder (10) is reduced due to oil leakage when the 7) is attached or detached, the oil in the sub tank (20) becomes secondary. The expansion side oil chamber (c) of the side cylinder (12) is supplied to the reduction side oil chamber (d) through the check valve (19), so that the reduction side oil chamber (d) of the secondary side cylinder (12) is supplied. The amount of oil is kept constant when the secondary cylinder (12) is contracted.
考案の効果 以上のように、本考案によれば、油圧循環回路によりブ
ースタシリンダの高圧油を吐出する２次側シリンダの縮
小側油室の油を一定油量に保つサブタンクに油を供給す
るとともに、余剰油をリザーバに戻すようにしたので、
サブタンクへの油の補給及びサブタンク内の油の交換を
する必要のない油圧増圧器が提供される。Effect of the Invention As described above, according to the present invention, the oil is supplied to the sub-tank that keeps the oil in the reduction side oil chamber of the secondary side cylinder that discharges the high pressure oil of the booster cylinder by the hydraulic circulation circuit to a constant oil amount. Since I tried to return the excess oil to the reservoir,
Provided is a hydraulic pressure booster which does not require oil supply to the sub tank and oil exchange in the sub tank.
図面は本考案の実施例を示し、第１図は油圧増圧器の回
路図である。 ２……油圧増圧器、７……電磁切換弁、10……ブースタ
シリンダ、11……１次側シリンダ、12……２次側シリン
ダ、19……チェック弁、20……サブタンク、21……管
路、23……ドレーン管路。The drawings show an embodiment of the present invention, and FIG. 1 is a circuit diagram of a hydraulic booster. 2 …… Hydraulic pressure booster, 7 …… Electromagnetic switching valve, 10 …… Booster cylinder, 11 …… Primary side cylinder, 12 …… Secondary side cylinder, 19 …… Check valve, 20 …… Sub tank, 21 …… Pipe line, 23 ... Drain line.
Claims (1)
ダロッドの伸縮により作動する２次側シリンダを取付け
たブースタシリンダを切換弁により制御して、１次側シ
リンダを伸長させることにより２次側シリンダから高圧
油を吐出する油圧増圧器において、前記２次側シリンダ
の伸長側油室と縮小側油室とをチェック弁を介して連通
し、２次側シリンダの伸長側油室にサブタンクを連結
し、このサブタンクに油を供給するとともにサブタンク
の余剰油をリザーバに戻す油圧循環回路を設けたことを
特徴とする油圧増圧器。1. A secondary cylinder by extending a primary cylinder by controlling a booster cylinder equipped with a secondary cylinder that operates by expansion and contraction of a cylinder rod of the primary cylinder on a primary cylinder by a switching valve. In the hydraulic pressure booster that discharges high pressure oil from the side cylinder, the extension side oil chamber and the contraction side oil chamber of the secondary side cylinder are communicated via a check valve, and a sub tank is connected to the extension side oil chamber of the secondary side cylinder. A hydraulic pressure booster comprising a hydraulic circulation circuit that is connected to supply oil to the sub tank and returns excess oil from the sub tank to the reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987145752U JPH0636322Y2 (en) | 1987-09-22 | 1987-09-22 | Hydraulic booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987145752U JPH0636322Y2 (en) | 1987-09-22 | 1987-09-22 | Hydraulic booster |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6449702U JPS6449702U (en) | 1989-03-28 |
| JPH0636322Y2 true JPH0636322Y2 (en) | 1994-09-21 |
Family
ID=31414617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987145752U Expired - Lifetime JPH0636322Y2 (en) | 1987-09-22 | 1987-09-22 | Hydraulic booster |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0636322Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS616003U (en) * | 1984-06-15 | 1986-01-14 | 株式会社タダノ | pressure booster |
-
1987
- 1987-09-22 JP JP1987145752U patent/JPH0636322Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6449702U (en) | 1989-03-28 |
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