JPH034801Y2 - - Google Patents
Info
- Publication number
- JPH034801Y2 JPH034801Y2 JP9005684U JP9005684U JPH034801Y2 JP H034801 Y2 JPH034801 Y2 JP H034801Y2 JP 9005684 U JP9005684 U JP 9005684U JP 9005684 U JP9005684 U JP 9005684U JP H034801 Y2 JPH034801 Y2 JP H034801Y2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- oil passage
- oil
- cylinder
- pressure 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.)
- Expired
Links
- 230000008602 contraction Effects 0.000 claims description 21
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 151
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Landscapes
- Manufacturing Of Electrical Connectors (AREA)
- Shearing Machines (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Fluid-Pressure Circuits (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、配電工事における電線の圧着接続あ
るいは切断に用いられる挾圧工具の駆動用高圧油
を発生するための増圧器に関するものである。[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a pressure intensifier for generating high-pressure oil for driving a clamping tool used for crimp connection or disconnection of electric wires in power distribution work.
（従来の技術）
配電工事における電線の接続には、接続しよう
とする電線を銅あるいはアルミ製のスリーブ内で
互に突合せした上で、油圧駆動式の挾圧工具によ
り前記スリーブを外方から押し潰すことで両電線
を接続する方式がとられている。また、電線の切
断には、油圧駆動式の挾圧工具により当該電線を
挾圧接断する方式がとられている。前記挾圧工具
は、取扱いの容易化をはかるために小形軽量であ
ること、および充分な挾圧能力をもつていること
が要求される。このため、この挾圧工具は、通常
600〜700Kg／cm2の油圧により駆動されるようにな
つている。一方、配電作業に用いられる高所作業
車等に備わつている油圧発生装置は、百数拾Kg／
cm2の圧油発生能力しかなく、この発生油圧を増圧
器を介して600〜700Kg／cm2に増圧して前記挾圧工
具駆動用油圧として用いるようにしている。(Prior art) To connect electric wires in power distribution work, the electric wires to be connected are butted against each other in a copper or aluminum sleeve, and then the sleeve is pushed from the outside using a hydraulically driven clamping tool. A method is used to connect both wires by crushing them. Further, for cutting the electric wire, a method is adopted in which the electric wire is clamped and cut using a hydraulically driven clamping tool. The clamping tool is required to be small and lightweight for ease of handling, and to have sufficient clamping capacity. For this reason, this clamping tool is usually
It is designed to be driven by hydraulic pressure of 600 to 700 kg/cm 2 . On the other hand, the hydraulic pressure generators installed in aerial work vehicles used for power distribution work are
The hydraulic pressure generated is only 600 to 700 kg/cm 2 through a pressure intensifier, and is used as the hydraulic pressure for driving the clamping tool.
従来の増圧器を第３図に基づいて説明する。第
３図においてＡは増圧器であつて、この増圧器Ａ
は、低圧シリンダＢ、高圧シリンダＣ、および油
圧制御装置Ｄとから構成されている。前記低圧シ
リンダＡは、大径シリンダ１、この大径シリンダ
１内に油密摺動自在に嵌挿され大径シリンダ１内
を伸長動作側油室２と縮小動作側油室３に区画す
る大径ピストン４、およびその基端を大径ピスト
ン４に固着され前記縮小動作側圧油室３を通つて
大径シリンダ１外へ延出したピストンロツド５と
から構成されている。前記高圧シリンダＣは、前
記低圧シリンダＢのピストンロツド５先端部に形
成した小径ピストン６と、この小径ピストン６を
油密摺動自在に受容し小径ピストン６と共に増圧
室７を画定する小径シリンダ８とから構成されて
いる。前記油圧制御装置Ｄは、前記低圧シリンダ
Ｂの伸長動作側圧油室２に連なる油路９、縮小動
作側圧油室３に連なる油路１０、高所作業車等の
油圧発生装置１１に連なる高圧油路１２およびタ
ンク１３に連なるタンク油路１４との間に介装さ
れた四方向三位置センタバイパスabポートブロ
ツク形の油圧切換弁で構成されている。１５は、
高圧シリンダＣの増圧室７と挾圧工具１６の出力
シリンダ１７を接続する油路である。前記油圧制
御装置（四方向三位置センタバイパスabポート
ブロツク形の油圧切換弁）Ｄは、
低圧シリンダＢの伸長動作側圧油室２に連な
る油路９および縮小動作側圧油室３に連なる油
路１０を、高圧油路１２およびタンク油路１４
から遮断した状態、
高圧油路１２と低圧油圧シリンダＢの伸長動
作側圧油室２に連なる油路９を接続すると共
に、低圧シリンダＢの縮小動作側圧油室３に連
なる油路１０とタンク油路１４を接続した状
態、
高圧油路１２と低圧油圧シリンダＢの縮小動
作側圧油室３に連なる油路１０を接続すると共
に、低圧油圧シリンダＢの伸長動作側圧油室２
に連なる油路９とタンク油路１４を接続した状
態
との間で切換制御できるようになつている。１８
および１９は、油圧制御装置Ｄの制御スイツチで
ある。制御スイツチ１８は、これを接続操作する
ことによつて電路２０を介して油圧制御装置Ｄの
ソレノイド２１に通電し油圧制御装置Ｄを上記
の状態に切換制御するものである。制御スイツチ
１９は、これを接続操作することによつて電路２
２を介して油圧制御装置Ｄのソレノイド２３に通
電し油圧制御装置Ｄを上記の状態に切換制御す
るものである。制御スイツチ１８および１９の何
れをも接続操作しないときは、油圧制御装置Ｄ
は、上記の状態にある。 A conventional pressure booster will be explained based on FIG. In FIG. 3, A is a pressure intensifier, and this pressure intensifier A
is composed of a low pressure cylinder B, a high pressure cylinder C, and a hydraulic control device D. The low pressure cylinder A includes a large diameter cylinder 1, and a large diameter cylinder 1 that is slidably fitted in an oil-tight manner into the large diameter cylinder 1 and partitions the inside of the large diameter cylinder 1 into an oil chamber 2 on the extension operation side and an oil chamber 3 on the contraction operation side. It consists of a diameter piston 4, and a piston rod 5 whose base end is fixed to the large diameter piston 4 and extends out of the large diameter cylinder 1 through the reduction operation side pressure oil chamber 3. The high-pressure cylinder C includes a small-diameter piston 6 formed at the tip of the piston rod 5 of the low-pressure cylinder B, and a small-diameter cylinder 8 that receives the small-diameter piston 6 in an oil-tight and slidable manner and defines a pressure increasing chamber 7 together with the small-diameter piston 6. It is composed of. The hydraulic control device D includes an oil passage 9 connected to the extension operation side pressure oil chamber 2 of the low pressure cylinder B, an oil passage 10 connected to the contraction operation side pressure oil chamber 3, and a high pressure oil passage connected to the hydraulic pressure generator 11 of an aerial work vehicle or the like. It is comprised of a four-way, three-position center bypass ab port block type hydraulic switching valve interposed between the oil passage 12 and the tank oil passage 14 connected to the tank 13. 15 is
This is an oil passage that connects the pressure increase chamber 7 of the high pressure cylinder C and the output cylinder 17 of the clamping tool 16. The hydraulic control device (four-way three-position center bypass AB port block type hydraulic switching valve) D has an oil passage 9 connected to the extension operation side pressure oil chamber 2 of the low pressure cylinder B and an oil passage 10 connected to the contraction operation side pressure oil chamber 3. , high pressure oil line 12 and tank oil line 14
The high pressure oil passage 12 and the oil passage 9 connected to the extension operation side pressure oil chamber 2 of the low pressure hydraulic cylinder B are connected, and the oil passage 10 and the tank oil passage connected to the contraction operation side pressure oil chamber 3 of the low pressure cylinder B are connected. 14 is connected, the high pressure oil passage 12 is connected to the oil passage 10 which is connected to the contraction operation side pressure oil chamber 3 of the low pressure hydraulic cylinder B, and the extension operation side pressure oil chamber 2 of the low pressure hydraulic cylinder B is connected.
Switching control can be performed between a state in which the oil passage 9 connected to the tank oil passage 14 is connected to the tank oil passage 14. 18
and 19 are control switches of the hydraulic control device D. When the control switch 18 is connected, the solenoid 21 of the hydraulic control device D is energized via the electric line 20 to switch and control the hydraulic control device D to the above-mentioned state. By connecting the control switch 19, the electric circuit 2
2, the solenoid 23 of the hydraulic control device D is energized to switch and control the hydraulic control device D to the above state. When neither of the control switches 18 and 19 is connected, the hydraulic control device D
is in the above state.
今、第３図の状態で制御スイツチ１８を接続操
作すると、油圧制御装置Ｄを介して高圧油路１２
から低圧シリンダＢの伸長動作側圧油室２へ圧油
が供給されると共に縮小動作側圧油室３の油がタ
ンク油路１４へ排出され低圧油圧シリンダＢが伸
長する。これに伴い高圧シリンダＣの増圧室７内
の作動油が押し出されこれが油路１５を経て挾圧
工具１６に到り挾圧工具１６を挾圧駆動する（こ
のとき増圧室７の油圧は、大径ピストン４に比し
小径ピストン６の面積が小さいので増圧され
る。）。挾圧工具１６による挾圧を解除する場合に
は、制御スイツチ１９を接続操作する。これによ
り低圧シリンダＢが縮小駆動され小径ピストン６
は図において右動し、挾圧工具１６はそのリター
ンスプリング２４により復帰する。 Now, when the control switch 18 is connected and operated in the state shown in FIG.
Pressure oil is supplied from the low-pressure cylinder B to the extension-side pressure oil chamber 2, and at the same time, oil in the contraction-side pressure oil chamber 3 is discharged to the tank oil passage 14, causing the low-pressure hydraulic cylinder B to extend. Along with this, the hydraulic oil in the pressure intensification chamber 7 of the high pressure cylinder C is pushed out, which reaches the clamping pressure tool 16 through the oil passage 15 and drives the clamping pressure tool 16 (at this time, the hydraulic pressure in the pressure intensification chamber 7 is , the pressure is increased because the area of the small diameter piston 6 is smaller than that of the large diameter piston 4). To release the clamping pressure by the clamping tool 16, the control switch 19 is connected. As a result, the low pressure cylinder B is driven to contract and the small diameter piston 6
moves to the right in the figure, and the clamping tool 16 is returned by its return spring 24.
尚、第３図において、４０は低圧シリンダＢの
最縮小状態において開放され、増圧室７を油槽４
１に連通するチエツク弁であつて、増圧式７内の
充填油の油量を調節するためのものである。 In addition, in FIG. 3, 40 is opened when the low pressure cylinder B is in the most contracted state, and the pressure increasing chamber 7 is connected to the oil tank 4.
This is a check valve that communicates with the pressure booster 7 and is used to adjust the amount of oil filled in the pressure booster 7.
このように構成した従来の増圧器Ａにあつて
は、その増圧室７に発生する油圧は600〜700Kg／
cm2の高圧と、ほゞ零Kg／cm2の低圧の何れかであつ
て、中間的な油圧力すなわち、挾圧工具１６が被
加工物を塑性変形を起さない程度の小さな力で把
持する程度の中間的な油圧力を発生することがで
きないものであつた。このため、従来の増圧器に
よつて駆動される挾圧工具を用いて被加工物を挾
着接続あるいは切断しようとするときは、挾圧工
具をおよその挾圧位置へ位置させた上で一気に被
加工物を挾圧接続あるいは切断せざるを得ず、圧
着または切断位置がずれ易いという欠点があつ
た。 In the conventional pressure intensifier A configured in this way, the hydraulic pressure generated in the pressure intensifier chamber 7 is 600 to 700 kg/
The clamping tool 16 grips the workpiece with a small force that does not cause plastic deformation. However, it was not possible to generate an intermediate hydraulic pressure of the same degree. For this reason, when attempting to connect or disconnect workpieces using a clamping tool driven by a conventional pressure intensifier, the clamping tool should be positioned at the approximate clamping position and then This method has the disadvantage that the workpiece must be connected or cut by clamping, and the crimping or cutting position is likely to shift.
（本考案が解決しようとする問題点）
本考案は、従来の増圧器のもつ上述の欠点すな
わち、増圧器の発生圧力が高圧とほゞ零気圧の二
様にしか選定できずそのため挾圧工具による被加
工物の仮保持ができないという欠点に鑑みてなし
たものであつて、挾圧工具が被加工物を仮保持で
きる程度の中間的な油圧力をも発生しうる新規な
増圧器を提供しようとするものである。(Problems to be Solved by the Present Invention) The present invention solves the above-mentioned drawbacks of conventional pressure intensifiers, namely, the pressure generated by the pressure intensifier can only be selected in two ways: high pressure and almost zero pressure. This was developed in view of the drawback that a clamping tool cannot temporarily hold a workpiece, and provides a new pressure intensifier that can generate intermediate hydraulic pressure to the extent that a clamping tool can temporarily hold a workpiece. This is what I am trying to do.
（問題点を解決するための手段）
本考案の増圧器は、上述の問題点を解決するた
め、上記既述の従来の増圧器Ａにおける油圧制御
装置Ｄに、低圧油圧シリンダＢの伸長動作側圧油
室２に連なる油路９、縮小動作側圧油室３に連な
る油路１０、高圧油路１２およびタンク油路１４
を互に接続した状態に切換制御できる機能を付加
したものであり、油圧制御装置Ｄが四つの接続状
態を備えているところに特徴がある。(Means for Solving the Problems) In order to solve the above-mentioned problems, the pressure intensifier of the present invention has an extension operation side pressure of the low-pressure hydraulic cylinder B added to the hydraulic control device D in the conventional pressure intensifier A described above. An oil passage 9 connected to the oil chamber 2, an oil passage 10 connected to the reduction operation side pressure oil chamber 3, a high pressure oil passage 12, and a tank oil passage 14.
The hydraulic control device D is characterized in that it has four connection states.
（作用）
本考案の増圧器は、その油圧制御装置Ｄが、
低圧シリンダＢの伸長動作側圧油室２に連な
る油路９および縮小動作側圧油室３に連なる油
路１０を、高圧油路１２およびタンク油路１４
から遮断した状態、
高圧油路１２と低圧油圧シリンダＢの伸長動
作側圧油室２に連なる油路９を接続すると共
に、低圧シリンダＢの縮小動作側圧油室３に連
なる油路１０とタンク油路１４を接続した状
態、
高圧油路１２と低圧油圧シリンダＢの縮小動
作側圧油室３に連なる油路１０を接続すると共
に、低圧油圧シリンダＢの伸長動作側圧油室２
に連なる油路９とタンク油路１４を接続した状
態、
低圧シリンダＢの伸長動作側圧油室２に連な
る油路９、縮小動作側圧油室３に連なる油路１
０、高圧油路１２およびタンク油路１４を互に
接続した状態、
の四つの状態に切換制御できるようにしているの
で、上記〜の切換状態を選択することにより
従来の増圧器と同様に機能させることができるも
のであるが、油圧制御装置Ｄを上記の切換状態
とすることで増圧器の発生圧力を中間的な圧力
（増圧器の発生圧力により駆動される挾圧工具が
被加工物を仮保持できる程度の圧力）とすること
ができるものである。すなわち、油圧制御装置Ｄ
を上記の切換状態とすると、低圧シリンダＢの
伸長動作側圧油室２、縮小動作側圧油室３、高圧
油路１２およびタンク油路１４は互に接続され、
この状態において油圧発生装置１１の発生圧油は
高圧油路１２、油圧制御装置Ｄおよびタンク油路
１４を経てタンク１３に還流しているのである
が、タンク油路１４の前段の油圧は、当該タンク
油路１４のもつ管路抵抗によつて数Kg／cm2〜十数
Kg／cm2の圧力となつている。上記の接続状態で
は、この圧力が低圧シリンダＢの伸長動作側圧油
室２並びに縮小動作側圧油室３に同時に作用し、
その結果低圧シリンダＢは、伸長動作側圧油室２
と縮小動作側圧油室３の受圧面積の差に、この圧
力（数Kg／cm2〜十数Kg／cm2の圧力）を剰じた出力
で以つて伸長駆動される。そして、この伸長駆動
に伴つて増圧器の小径ピストン６が動き増圧室７
に圧油が発生する。この発生圧力は、低圧シリン
ダＢがタンク油路１４の管路抵抗に帰因して生ず
る低圧で伸長駆動されること、および低圧シリン
ダＢがいわゆる差動シリンダとして伸長駆動され
ることから、前記中間的な油圧力となることは容
易に理解できるであろう。(Function) In the pressure booster of the present invention, the hydraulic control device D connects the oil passage 9 connected to the extension operation side pressure oil chamber 2 and the oil passage 10 connected to the contraction operation side pressure oil chamber 3 of the low pressure cylinder B to the high pressure oil passage 12. and tank oil line 14
The high pressure oil passage 12 and the oil passage 9 connected to the extension operation side pressure oil chamber 2 of the low pressure hydraulic cylinder B are connected, and the oil passage 10 and the tank oil passage connected to the contraction operation side pressure oil chamber 3 of the low pressure cylinder B are connected. 14 is connected, the high pressure oil passage 12 is connected to the oil passage 10 which is connected to the contraction operation side pressure oil chamber 3 of the low pressure hydraulic cylinder B, and the extension operation side pressure oil chamber 2 of the low pressure hydraulic cylinder B is connected.
A state in which the oil passage 9 connected to the tank oil passage 14 is connected to the oil passage 9 connected to the extension operation side pressure oil chamber 2 of the low pressure cylinder B, and the oil passage 1 connected to the contraction operation side pressure oil chamber 3.
0, a state in which the high pressure oil line 12 and tank oil line 14 are connected to each other, and the state in which the high pressure oil line 12 and tank oil line 14 are connected to each other. However, by setting the hydraulic control device D to the above-mentioned switching state, the pressure generated by the pressure intensifier can be changed to an intermediate pressure (the clamping tool driven by the pressure generated by the pressure intensifier presses the workpiece). (pressure that can be temporarily held). That is, the hydraulic control device D
When set to the above switching state, the extension operation side pressure oil chamber 2, the contraction operation side pressure oil chamber 3, the high pressure oil passage 12, and the tank oil passage 14 of the low pressure cylinder B are connected to each other,
In this state, the pressure oil generated by the oil pressure generator 11 is returned to the tank 13 via the high pressure oil path 12, the oil pressure control device D, and the tank oil path 14, but the oil pressure in the previous stage of the tank oil path 14 is Depending on the pipe resistance of the tank oil line 14, it may range from several kg/cm 2 to several dozen.
The pressure is Kg/ cm2 . In the above connected state, this pressure acts simultaneously on the extension operation side pressure oil chamber 2 and the contraction operation side pressure oil chamber 3 of the low pressure cylinder B,
As a result, the low pressure cylinder B has the extension operation side pressure oil chamber 2
The expansion drive is performed using an output obtained by adding this pressure (a pressure of several kg/cm 2 to several tens of kg/cm 2 ) to the difference between the pressure receiving area of the compression side pressure oil chamber 3 and the pressure receiving area of the contraction operation side pressure oil chamber 3 . Then, along with this extension drive, the small diameter piston 6 of the pressure intensifier moves and the pressure intensifier chamber 7
Pressure oil is generated. This generated pressure is caused by the fact that the low pressure cylinder B is driven to extend due to the low pressure caused by the pipe resistance of the tank oil line 14, and that the low pressure cylinder B is driven to extend as a so-called differential cylinder. It is easy to understand that this is a hydraulic pressure.
（実施例）
第１図に基づいて本考案の増圧器の実施例を説
明する。本考案の増圧器は、既述の如く従来の増
圧器に比して油圧制御装置Ｄが相違するのみであ
るので、従来技術として説明し第３図で示した符
号およびその構成は、油圧制御装置Ｄの構造説明
およびそれに用いた符号１８〜２３を除き、以下
の説明においてそのまゝ援用する。第１図におい
て、油圧制御装置Ｄは、高圧油路１２およびタン
ク油路１４に接続された四方向三位置センターバ
イパスabポートオープン型の三位置油圧切換弁
２５と、この三位置油圧切換弁のａ，ｂポート、
低圧シリンダＢの伸長動作側圧油室２に連なる油
路９および縮小動作側圧油室３に連なる油路１０
間に介装され常時は油路９および１０をブロツク
すると共に前記三位置油圧切換弁のabポートを
接続する位置にスプリングオフセツトされ操作
時（ソレノイド２６に通電したとき）にａポート
を油路９に、ｂポートを油路１０に夫々接続する
位置にもたらされる二位置油圧切換弁２７で構
成されている。前記三位置油圧切換弁２５は、そ
のソレノイド２８に通電することによつて高圧油
路１２をａポートに、タンク油路をｂポートに
夫々接続する位置に切り換えられ、そのソレノイ
ド２９に通電することによつて高圧油路１２をｂ
ポートに、タンク油路１４をａポートに夫々接続
する位置に切り換えられるようになつている。３
０，３１および３２は、油圧制御装置Ｄの制御ス
イツチである。制御スイツチ３０は、これを接続
操作することによつて電路３３を介して三位置油
圧切換弁２５のソレノイド２８へ通電すると共に
電路３４を介して二位置油圧切換弁２７のソレノ
イド２６に通電するよう結線されている。制御ス
イツチ３１は、これを接続操作することによつて
電路３５を介して三位置油圧切換弁２５のソレノ
イド２９へ通電すると共に電路３６を介して二位
置油圧切換弁２７のソレノイド２６へ通電するよ
う結線されている。制御スイツチ３２は、これを
接続操作することによつて、電路３７を介して二
位置油圧切換弁２７のソレノイド２６へ通電する
よう結線されている。３８および３９は、前記電
路３４および３６へ夫々装したダイオードであ
る。(Example) An example of the pressure intensifier of the present invention will be described based on FIG. As mentioned above, the pressure intensifier of the present invention is different from the conventional pressure intensifier only in the hydraulic control device D. Therefore, the symbols and configurations explained as the prior art and shown in FIG. Except for the structural description of device D and the reference numerals 18 to 23 used therein, the same will be used in the following description. In FIG. 1, the hydraulic control device D includes a four-way three-position center bypass AB port open type three-position hydraulic switching valve 25 connected to the high-pressure oil passage 12 and the tank oil passage 14; a, b port,
An oil passage 9 connected to the extension operation side pressure oil chamber 2 and an oil passage 10 connected to the contraction operation side pressure oil chamber 3 of the low pressure cylinder B.
It is interposed in between and normally blocks oil passages 9 and 10, and has a spring offset at the position where the ab port of the three-position hydraulic switching valve is connected, so that when operated (when the solenoid 26 is energized), the a port is connected to the oil passage. 9 is comprised of two-position hydraulic switching valves 27 brought to positions connecting the b ports to the oil passages 10, respectively. The three-position hydraulic switching valve 25 is switched to a position where the high pressure oil passage 12 is connected to the a port and the tank oil passage is connected to the b port by energizing the solenoid 28, and the solenoid 29 is energized. The high pressure oil passage 12 is
The port can be switched to a position where the tank oil passage 14 is connected to the a port, respectively. 3
0, 31 and 32 are control switches of the hydraulic control device D. When the control switch 30 is connected, the solenoid 28 of the three-position hydraulic switching valve 25 is energized via the electric line 33, and the solenoid 26 of the two-position hydraulic switching valve 27 is energized via the electric line 34. wired. When the control switch 31 is connected, the solenoid 29 of the three-position hydraulic switching valve 25 is energized via the electrical line 35, and the solenoid 26 of the two-position hydraulic switching valve 27 is energized via the electrical line 36. wired. The control switch 32 is wired so that when the control switch 32 is connected, the solenoid 26 of the two-position hydraulic switching valve 27 is energized via an electric line 37. 38 and 39 are diodes connected to the electric circuits 34 and 36, respectively.
制御スイツチ３０，３１および３２の何れをも
接続していない状態（第１図々示の状態）では、
制御装置Ｄは、低圧シリンダＢの伸長動作側圧油
室２に連なる油路９および縮小動作側圧油室３に
連なる油路１０を、高圧油路１２およびタンク油
路１４から遮断した状態にある。このため増圧器
Ａは増圧機能しない。 When none of the control switches 30, 31 and 32 are connected (the state shown in Figure 1),
The control device D is in a state where the oil passage 9 connected to the extension operation side pressure oil chamber 2 and the oil passage 10 connected to the contraction operation side pressure oil chamber 3 of the low pressure cylinder B are cut off from the high pressure oil passage 12 and the tank oil passage 14. Therefore, the pressure intensifier A does not have a pressure increasing function.
制御スイツチ３０を接続操作すると、油圧制御
装置Ｄは、高圧油路１２と油路９を接続すると共
に、油路１０とタンク油路１４を接続した状態と
なる。このため増圧器Ａは増圧機能する。 When the control switch 30 is connected, the hydraulic control device D connects the high pressure oil passage 12 and the oil passage 9, and also connects the oil passage 10 and the tank oil passage 14. Therefore, the pressure intensifier A functions to increase the pressure.
制御スイツチ３１を接続操作すると、油圧制御
装置Ｄは高圧油路１２と油路１０を接続すると共
に、油路９とタンク油路１４を接続した状態とな
る。このため、低圧シリンダＢが縮小し増圧器Ａ
は抜圧工程となる。 When the control switch 31 is operated to connect, the hydraulic control device D connects the high pressure oil passage 12 and the oil passage 10, and also connects the oil passage 9 and the tank oil passage 14. Therefore, the low pressure cylinder B shrinks and the pressure intensifier A
is the depressurization process.
制御スイツチ３２を接続操作すると、油圧制御
装置Ｄは、低圧油圧シリンダＢ１２の伸長動作側
圧油室２に連なる油路９、縮小動作側圧油室３に
連なる油路１０、高圧油路１２およびタンク油路
１４を互に接続した状態となる。この状態では、
油圧発生装置１１の発生圧油は、高圧油路１２、
油圧制御装置Ｄ、タンク油路１４を経てタンク１
３に還流しており、タンク油路１４の管路抵抗の
ためにタンク油路１４の前段に数Kg／cm2〜十数
Kg／cm2の油圧が生じている。この油圧が低圧シリ
ンダＢの伸長動作側圧油室２および縮小動作側圧
油室３に同時に作用するので、低圧シリンダＢは
いわゆる差動シリンダとして伸長駆動され、増圧
器Ａは、中間的な油圧を発生する。そして、この
発生油圧により挾圧工具１６は、被加工物を仮保
持するのである。 When the control switch 32 is connected and operated, the hydraulic control device D controls the oil passage 9 connected to the extension operation side pressure oil chamber 2 of the low pressure hydraulic cylinder B12, the oil passage 10 connected to the contraction operation side pressure oil chamber 3, the high pressure oil passage 12, and the tank oil. The lines 14 are now connected to each other. In this state,
The pressure oil generated by the hydraulic pressure generator 11 is transmitted through a high pressure oil path 12,
Hydraulic control device D, tank 1 via tank oil path 14
3, and due to the pipe resistance of the tank oil line 14, a few kg/cm 2 to several dozen
A hydraulic pressure of Kg/ cm2 is generated. This oil pressure acts simultaneously on the extension side pressure oil chamber 2 and the contraction side pressure oil chamber 3 of the low pressure cylinder B, so the low pressure cylinder B is driven to extend as a so-called differential cylinder, and the pressure booster A generates an intermediate oil pressure. do. The clamping tool 16 temporarily holds the workpiece by this generated hydraulic pressure.
尚、上記実施例において、タンク油路１４に、
可変抵抗弁（図示せず）を介装するようにし、こ
の可変抵抗弁を調節することで、増圧器の中間的
な油圧を増減調節しても良いこと勿論である。ま
た、上記実施例においては、油圧制御装置Ｄを、
電磁操作式の三位置油圧切換弁２５と二位置油圧
切換弁２７で構成したが、この油圧制御装置Ｄ
は、油路９、油路１０、高圧油路１２およびタン
ク油路１４間の接続状態を、上記四つの接続状態
の間で切換制御できるものであれば良く、例え
ば、第２図に示す如き手動作操作式の四位置油圧
切換弁で代替しうること勿論である。 In addition, in the above embodiment, in the tank oil passage 14,
Of course, by interposing a variable resistance valve (not shown) and adjusting the variable resistance valve, the intermediate oil pressure of the pressure intensifier may be increased or decreased. Further, in the above embodiment, the hydraulic control device D is
This hydraulic control device D is composed of an electromagnetically operated three-position hydraulic switching valve 25 and a two-position hydraulic switching valve 27.
The connection state between the oil passage 9, the oil passage 10, the high pressure oil passage 12, and the tank oil passage 14 may be controlled to be switched between the above four connection states, for example, as shown in FIG. Of course, a manually operated four-position hydraulic switching valve can be used instead.
（本考案の効果）
以上の如く構成し作用する本考案の増圧器は、
従来の増圧器における油圧制御装置Ｄに、低圧油
圧シリンダＢの伸長動作側圧油室に連なる油路
９、縮小動作側圧油室に連なる油路１０、高圧油
路１２およびタンク油路１４を互に接続する切換
状態を付加するのみで、増圧器に中間的な油圧を
発生させることができこの増圧器により駆動され
る挾圧工具等により被加工物を仮保持できるとい
う効果を有するものである。(Effects of the present invention) The pressure booster of the present invention configured and operated as described above has the following features:
In the hydraulic control device D of the conventional pressure intensifier, the oil passage 9 connected to the extension operation side pressure oil chamber of the low pressure hydraulic cylinder B, the oil passage 10 connected to the contraction operation side pressure oil chamber, the high pressure oil passage 12, and the tank oil passage 14 are connected to each other. By simply adding a switching state to connect, an intermediate hydraulic pressure can be generated in the pressure intensifier, and the workpiece can be temporarily held by a clamping tool or the like driven by the pressure intensifier.
第１図は、本考案の増圧器の一実施例の説明
図、第２図は同他の実施例の要部説明図、第３図
は従来の増圧器の説明図である。
Ａ：増圧器、Ｂ；低圧シリンダ、Ｃ：高圧シリ
ンダ、Ｄ；油圧制御装置、１；大径シリンダ、
４；大径ピストン、２；伸長動作側圧油室、３：
縮小動作側圧油室、５；ピストンロツド、６；ピ
ストン、８；小径シリンダ、９；低圧シリンダの
伸長動作側圧油室に連なる油路、１０；縮小動作
側圧油室に連なる油路、１２；高圧油路、１４；
タンク油路。
FIG. 1 is an explanatory diagram of one embodiment of the pressure intensifier of the present invention, FIG. 2 is an explanatory diagram of the main part of another embodiment, and FIG. 3 is an explanatory diagram of a conventional pressure intensifier. A: Pressure booster, B: Low pressure cylinder, C: High pressure cylinder, D: Hydraulic control device, 1: Large diameter cylinder,
4: Large diameter piston, 2: Extension operation side pressure oil chamber, 3:
Reduction operation side pressure oil chamber, 5: Piston rod, 6: Piston, 8: Small diameter cylinder, 9: Oil passage connected to the extension operation side pressure oil chamber of the low pressure cylinder, 10; Oil passage connected to the reduction operation side pressure oil chamber, 12: High pressure oil Road, 14;
Tank oil line.
Claims (1)
自在に嵌挿された大径シリンダ内を伸長動作側圧
油室と縮小動作側圧油室に区画する大径ピストン
およびその基端を前記大径ピストンに固着され前
記縮小動作側圧油室を通つてその先端を大径シリ
ンダ外へ延出したピストンロツドとからなる低圧
シリンダ、前記低圧シリンダのピストンロツド先
端部に形成したピストンとこのピストンを油密摺
動自在に受容する小径シリンダとからなる高圧シ
リンダ、および、前記低圧シリンダの伸長動作側
圧油室に連なる油路、前記低圧油圧シリンダの縮
小動作側圧油室に連なる油路、油圧発生装置に連
なる高圧油路およびタンクに連なるタンク油路の
間に介装された油圧制御装置を備えてなる増圧器
であつて、前記油圧制御装置は少なくとも、 低圧シリンダの伸長動作側圧油室に連なる油
路および縮小動作側圧油室に連なる油路を、高
圧油路およびタンク油路から遮断した状態、 高圧油路と低圧油圧シリンダの伸長動作側圧
油室に連なる油路を接続すると共に、低圧シリ
ンダの縮小動作側圧油室に連なる油路とタンク
油路を接続した状態、 高圧油路と低圧油圧シリンダの縮小動作側圧
油室に連なる油路を接続すると共に、低圧油圧
シリンダの伸長動作側圧油室に連なる油路とタ
ンク路を接続した状態、 低圧油圧シリンダの伸長動作側圧油室に連な
る油路、縮小動作側圧油室に連なる油路、高圧
油路およびタンク油路を互いに接続した状態の
四つの状態に切換制御できるよう構成してある
ことを特徴とする増圧器。[Scope of Claim for Utility Model Registration] A large-diameter cylinder, a large-diameter piston that is slidably fitted in the large-diameter cylinder in an oil-tight manner and divides the inside of the large-diameter cylinder into an extension-side pressure oil chamber and a contraction-side pressure oil chamber. and a piston rod whose base end is fixed to the large-diameter piston and whose tip extends outside the large-diameter cylinder through the reduction operation side pressure oil chamber, a piston formed at the tip of the piston rod of the low-pressure cylinder. and a small-diameter cylinder that receives the piston in an oil-tight and slidable manner, an oil passage connected to an extension operation side pressure oil chamber of the low pressure cylinder, and an oil passage connected to a contraction operation side pressure oil chamber of the low pressure hydraulic cylinder. , a pressure intensifier comprising a hydraulic control device interposed between a high-pressure oil path connected to a hydraulic pressure generating device and a tank oil path connected to a tank, the hydraulic control device at least controlling pressure oil on the extension operation side of a low-pressure cylinder. The oil passage leading to the chamber and the oil passage leading to the contraction side pressure oil chamber are cut off from the high pressure oil passage and the tank oil passage, and the high pressure oil passage and the oil passage leading to the extension side pressure oil chamber of the low pressure hydraulic cylinder are connected. , the state in which the oil passage leading to the compression side pressure oil chamber of the low pressure cylinder is connected to the tank oil passage, the state in which the high pressure oil passage and the oil passage leading to the contraction side pressure oil chamber of the low pressure hydraulic cylinder are connected, and the extension operation of the low pressure hydraulic cylinder The oil passage connected to the side pressure oil chamber and the tank passage are connected, the oil passage connected to the extension side pressure oil chamber of the low pressure hydraulic cylinder, the oil passage connected to the contraction side pressure oil chamber, the high pressure oil passage and the tank oil passage are connected to each other. 1. A pressure intensifier characterized by being configured to be able to control switching between four states.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9005684U JPS616003U (en) | 1984-06-15 | 1984-06-15 | pressure booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9005684U JPS616003U (en) | 1984-06-15 | 1984-06-15 | pressure booster |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS616003U JPS616003U (en) | 1986-01-14 |
| JPH034801Y2 true JPH034801Y2 (en) | 1991-02-07 |
Family
ID=30644703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9005684U Granted JPS616003U (en) | 1984-06-15 | 1984-06-15 | pressure booster |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS616003U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0636322Y2 (en) * | 1987-09-22 | 1994-09-21 | 株式会社アイチコーポレーション | Hydraulic booster |
| KR100515965B1 (en) * | 1997-12-26 | 2006-03-09 | 삼성테크윈 주식회사 | Hydraulic system of airplane |
| JP6338629B2 (en) * | 2016-09-09 | 2018-06-06 | 株式会社ムラタ溶研 | Butt joining device for strip metal sheet |
-
1984
- 1984-06-15 JP JP9005684U patent/JPS616003U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS616003U (en) | 1986-01-14 |
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