JPS61159382A - Manual hydraulic tool - Google Patents
Manual hydraulic toolInfo
- Publication number
- JPS61159382A JPS61159382A JP28075284A JP28075284A JPS61159382A JP S61159382 A JPS61159382 A JP S61159382A JP 28075284 A JP28075284 A JP 28075284A JP 28075284 A JP28075284 A JP 28075284A JP S61159382 A JPS61159382 A JP S61159382A
- Authority
- JP
- Japan
- Prior art keywords
- oil chamber
- oil
- cylinder
- ram
- valve
- 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.)
- Pending
Links
Landscapes
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は携帯用手動油圧工具に関するもので、挟持した
物体を圧縮或は切断、するのに用いる。鉄塔上で行われ
る電線W!続作業等への利用に適する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a portable manual hydraulic tool used for compressing or cutting a clamped object. Electric wire W held on a steel tower! Suitable for use in continuous work, etc.
同目的の技術として特公昭58−28074号が公知で
あるが、ラムに早送りをさせるため油圧とスプリングと
を併用している。このためラムの速度を任意に調節する
ことができない。地上に定置された電線を正常位置にあ
るダイスで圧縮する場合はこの早送りでも有効であるが
、一般にこの種の工具は高所鉄塔上で極めて不自然な姿
勢で作業することが多い。このため電線をダイスにくわ
えるとき、電線位置を修正しながら仮圧縮する必要が起
こる。従ってスプリング併用の工具では不用意に切替ハ
ンドルを回した場合ラムが勢よくとび出し危険である上
、電線を正しい位置にセットすることが蝿かしい。また
スプリングの反力があるためラムを任意位置にとめてお
くことができず組立にも分解にも困難がある。Japanese Patent Publication No. 58-28074 is known as a technique for the same purpose, in which hydraulic pressure and a spring are used in combination to cause the ram to move rapidly. Therefore, the speed of the ram cannot be adjusted arbitrarily. Although this rapid traverse is effective when compressing electrical wires that are fixed on the ground using dies that are in the correct position, this type of tool is generally used in extremely unnatural postures when working on high-altitude steel towers. For this reason, when placing the wire in the die, it is necessary to temporarily compress the wire while correcting its position. Therefore, with a tool that uses a spring, if the switching handle is turned inadvertently, the ram will forcefully pop out, which is dangerous, and it is difficult to set the wire in the correct position. Furthermore, because of the reaction force of the spring, the ram cannot be held in a desired position, making assembly and disassembly difficult.
ラムの速度を任意に調節可能とする。早送りの必要ある
場合にも油による5圧装堰の使用により、スプリング不
要のものとする。The speed of the ram can be adjusted arbitrarily. Even when rapid feed is required, the use of an oil-based 5-pressure weir eliminates the need for springs.
図に示す如く本発明は本体1の一端に掛vjKとラム2
を、他端にカバ3と握り4を、さらに側方にプランジャ
ポンプ用レバ5を夫々備えたものである。As shown in the figure, the present invention has vjK and a ram 2 attached to one end of the main body 1.
, a cover 3 and a grip 4 are provided at the other end, and a plunger pump lever 5 is provided on the side.
本体1は一端に開口シリンダ1aがあり、他端はカバ3
との間に油gaを構成している。ラム2はシリンダ1a
へ挿入され、底部に油室Cを形成可能である。またラム
2には底部側に円筒空胴2aを設けである。ピストン6
はシリンダ1aへ突出して本体1に固着され、@部に油
室すを備え、頂部に油室eを形成可能である。サブシリ
ンダ7はピストン6の外周に被挿され、そiの内端段付
小径部7aとピストン外端段付大径部6aとの間に環状
油室dを形成する。油室dはピストンを貫通する孔によ
り油室すと連通ずる。サブシリンダ7とラムの円筒空胴
2aとの間には適当な環状隙間があり、両者は結合金具
8によって係止されているが、油1icと油室eとはこ
の隙間によって連通ずる。本体1には吸入弁9と吐出弁
10 があり、両者を結ぶ通路中にプランジャポンプP
が!!!蔵する。ポンプPの作動により油室aから吸入
弁9に吸込まれた油は、吐出弁10 から油室すへ送入
される。本体には別に切替弁11 とレリーフ弁12
とが設けである。切替弁11 には夫々油室aと油室す
とに通ずる2つの弁座11 a、 11 b、及び油室
Cに通ずる通d511 cが開口しており、中に球13
が収納されている。本体1の油室ia側中央には雌ね
じが切ってあり、油室aと切替弁11 を貫通する油通
路17 が穿設しである。レリーフ弁12 は油室す
から油室aへの通路中に介在する。切替弁11には弁座
11g側から弁棒14 の先端が臨ませである。弁棒1
4 はカバ3を摺動可能に貫通し、先端部に雄ねじが切
ってあり、本体1の中央雌ねじと螺合させである。弁棒
14 にはキー15 が固着しである。握り4は端部に
弁棒14 のキー15 と係合して弁棒14 を進退
自在に回動伝達可能な長溝4aが切っである。即ち弁棒
14 は握り4の左右回動により進退する。弁s14
の進退機構はこれに限るものでなく、例えば第3図のよ
うに弁棒14を先端部i4aと基部14bとにわけ、先
端部14tだけが進退可能にしてもよい。もちろん図示
しないが、弁棒X4 と本体1との螺合部を取り除き、
握り4の軸線方向への移動操作のみにより、切替弁から
チューブ16 に通ずる通路が設けであるつ眉圧装慮と
しては他に、シリンダ内に設けたピストンをばねにより
、一方向へ付勢させ、そのときの圧油を利用するシリン
ダ構造にしてもよい。The main body 1 has an open cylinder 1a at one end, and a cover 3 at the other end.
The oil ga is formed between the two. Ram 2 is cylinder 1a
It is possible to form an oil chamber C at the bottom. The ram 2 is also provided with a cylindrical cavity 2a on the bottom side. piston 6
protrudes into the cylinder 1a and is fixed to the main body 1, is provided with an oil chamber at the @ part, and can form an oil chamber e at the top. The sub-cylinder 7 is fitted around the outer periphery of the piston 6, and forms an annular oil chamber d between the stepped small-diameter inner end portion 7a and the stepped large-diameter outer end portion 6a of the sub-cylinder 7. The oil chamber d communicates with the oil chamber d through a hole passing through the piston. There is a suitable annular gap between the sub-cylinder 7 and the cylindrical cavity 2a of the ram, and both are locked by a coupling fitting 8, and the oil 1ic and the oil chamber e communicate through this gap. The main body 1 has a suction valve 9 and a discharge valve 10, and a plunger pump P is installed in the passage connecting the two.
but! ! ! Store. Oil sucked into the suction valve 9 from the oil chamber a by the operation of the pump P is sent to the oil chamber from the discharge valve 10. The main body has a switching valve 11 and a relief valve 12 separately.
This is the provision. The switching valve 11 has two valve seats 11a and 11b that communicate with the oil chamber a and the oil chamber su, respectively, and a passage d511c that communicates with the oil chamber C, with a ball 13 inside.
is stored. A female thread is cut in the center of the main body 1 on the oil chamber ia side, and an oil passage 17 is bored through the oil chamber a and the switching valve 11. The relief valve 12 is interposed in the passage from the oil chamber A to the oil chamber a. The tip of the valve stem 14 faces the switching valve 11 from the valve seat 11g side. Valve stem 1
4 slidably passes through the cover 3, has a male thread cut at its tip, and is screwed into the central female thread of the main body 1. A key 15 is fixed to the valve stem 14. The grip 4 has a long groove 4a cut at its end, which engages with the key 15 of the valve stem 14 and transmits rotation so that the valve stem 14 can move forward and backward. That is, the valve stem 14 moves forward and backward by the left and right rotation of the grip 4. valve s14
The advancing/retracting mechanism is not limited to this, for example, as shown in FIG. 3, the valve stem 14 may be divided into a tip i4a and a base 14b so that only the tip 14t can move back and forth. Although not shown, the threaded part between the valve stem X4 and the main body 1 is removed,
As an eyebrow pressure device, a passage is established that connects the switching valve to the tube 16 only by moving the grip 4 in the axial direction. , a cylinder structure that utilizes the pressure oil at that time may be used.
本発明は以上のように構成される。弁棒を前進させ弁座
11bを閉じると、ポンプPによる送油は油gbから油
室dへ流れ、サブシリンダもろともラムをシリンダ1a
へ引込ませる。弁棒を完全後退させ、弁座11aを閉じ
ると、油室すの油は通路11c経出で油室Cに、さらに
は油室eにも通じてラムをシリンダから押出す。その際
油室dにも油は流入するが、それによりラムを引込ませ
る力は、ラムの押出力に較べ格段に小さいので、押出し
は支障なく行われる。The present invention is configured as described above. When the valve stem is advanced and the valve seat 11b is closed, the oil supplied by the pump P flows from the oil gb to the oil chamber d, and the ram along with the sub cylinder is moved to the cylinder 1a.
draw it into. When the valve stem is completely retracted and the valve seat 11a is closed, the oil in the oil chamber exits through the passage 11c to the oil chamber C and further to the oil chamber e, pushing the ram out of the cylinder. At this time, oil also flows into the oil chamber d, but the force that causes the ram to retract is much smaller than the extrusion force of the ram, so extrusion is carried out without any problem.
第2図はラムが早送りされ始めたときの状態を示す。弁
棒は若干後退して、弁!l! 11 m + 11 b
はともに開放されている。チューブ16 に充満しJf
勢された油は弁座11aから切替弁室へ噴出する。FIG. 2 shows the situation when the ram begins to be fast forwarded. The valve stem moves back slightly and the valve! l! 11 m + 11 b
Both are open. Tube 16 is filled with Jf
The forced oil is ejected from the valve seat 11a into the switching valve chamber.
ポンプPによる吐出油も弁座11bから同室へ流入する
。両者は合流して通路11cへ流れ、油室C及び油室C
を圧してラムを早送りする。身重にとの間の被加工物に
ラムが当接したら、弁棒を後退させて弁座11aを閉じ
、ポンプPの作動で圧縮送りを行う。圧縮完了後なおポ
ンプ作動を続けると、レリーフ弁12 が開き油は油室
aへ還流する。ここで、弁棒を前進させ弁座11bを閉
す。油は油室dへ流れてラムの押戻しに転じ、油室Cの
油は通路11C経由で油室aへ還流し、チューブ16
を膨張させる。以上で1サイクルが終る。チューブ16
は前記した如く早送りに貢献するが、特に早送りを要し
ない場合はチューブを廃してもよい。The oil discharged by the pump P also flows into the same chamber from the valve seat 11b. The two merge and flow to the passage 11c, and the oil chamber C and the oil chamber C
Press to fast forward the ram. When the ram comes into contact with the workpiece between the two, the valve stem is moved back to close the valve seat 11a, and the pump P is operated to perform compression feeding. If the pump continues to operate after completion of compression, the relief valve 12 opens and the oil flows back to the oil chamber a. Here, the valve stem is moved forward to close the valve seat 11b. The oil flows to the oil chamber d and is pushed back by the ram, and the oil in the oil chamber C flows back to the oil chamber a via the passage 11C, and the oil flows through the tube 16.
expand. This completes one cycle. tube 16
As described above, the tube contributes to rapid forwarding, but if rapid forwarding is not particularly required, the tube may be omitted.
ラムの速度を握りの回動により任意に調節できる。全作
動が油圧であるため、操作6組型も容易となる。The speed of the ram can be adjusted arbitrarily by rotating the grip. Since all operations are hydraulic, the 6-set type is also easy to operate.
第1図は油圧工具の正面図、第2図は要部の詳細正面図
、第3図は弁棒進退機構の他の実施例である。
1・・・・本体、2・・・・ラム、3・・・・カバ、4
・・・・握り、5・・・・レバ、6・・・・ピストン、
7・・・・サブシリンダ、8・・・・結合金具、9・・
・・吸入弁、10・・・・吐出弁、11 ・・・・切
替弁、11a、tlb・・・・弁座、1]、c・・・・
通路、12 ・・・・レリーフ弁、13 ・・・・球、
14 ・・・・弁棒、15 ・・・・キー、16 ・・
・・チューブ、17 ・・・・油通路、a、b、c、
d・・・・油室、P・・・・プランジャポンプ。
第3図
140 14bFIG. 1 is a front view of the hydraulic tool, FIG. 2 is a detailed front view of the main parts, and FIG. 3 is another embodiment of the valve stem advancing/retracting mechanism. 1... Body, 2... Ram, 3... Cover, 4
...Grip, 5...Lever, 6...Piston,
7...Sub cylinder, 8...Joining metal fittings, 9...
...Suction valve, 10...Discharge valve, 11...Switching valve, 11a, tlb...Valve seat, 1], c...
Passage, 12... Relief valve, 13... Ball,
14... Valve stem, 15... Key, 16...
...Tube, 17 ...Oil passage, a, b, c,
d...Oil chamber, P...Plunger pump. Fig. 3 140 14b
Claims (1)
成する本体と、上記シリンダへ摺動自在に挿入され底部
に油室cを形成しかつ底部側に円筒空胴を設けたラムと
、上記シリンダ中央へ突出して本体に固着され底部に油
室bを備え頂部に油室eを形成するピストンと、油室b
と連通可能な環状油室dを形成するようピストン外周に
嵌挿され両油室c、eを連通可能にラムの円筒空胴に係
止されたサブシリンダと、油室bへ圧油を送入するプラ
ンジャポンプと、油室bからレリーフ弁を介し油室aへ
連通する通路と、本体カバへ進退可能に支持された弁棒
と、同じくカバへ支持さ れ弁棒の進退制御可能な筒状握りと、 上記弁棒の進退により油室bからの送入油を遮断或は油
室a、cへ夫々切替送出可能な切替弁と、前記握り内へ
収納され油室aと連通する高圧装置から成り、握りの操
作でラムを進退させるようにした手動油圧工具。[Scope of Claims] A main body having an open cylinder at one end and a cover forming an oil chamber a at the other end; A ram provided with a body, a piston that protrudes toward the center of the cylinder and is fixed to the main body and has an oil chamber b at the bottom and an oil chamber e at the top, and an oil chamber b.
A sub-cylinder is fitted onto the outer periphery of the piston to form an annular oil chamber d that can communicate with the sub-cylinder and is secured to the cylindrical cavity of the ram so that both oil chambers c and e can communicate with each other, and a sub-cylinder that sends pressurized oil to the oil chamber b. A plunger pump to be inserted into the oil chamber, a passage communicating from oil chamber b to oil chamber a via a relief valve, a valve stem supported on the main body cover so as to be able to move forward and backward, and a cylindrical structure that is also supported on the cover and that can control the movement of the valve stem back and forth. a grip, a switching valve capable of shutting off oil sent from oil chamber b or switching oil to oil chambers a and c, respectively, by advancing and retreating the valve stem, and a high-pressure device housed in the grip and communicating with oil chamber a. A manual hydraulic tool that moves the ram forward and backward by operating the grip.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28075284A JPS61159382A (en) | 1984-12-28 | 1984-12-28 | Manual hydraulic tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28075284A JPS61159382A (en) | 1984-12-28 | 1984-12-28 | Manual hydraulic tool |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61159382A true JPS61159382A (en) | 1986-07-19 |
Family
ID=17629456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP28075284A Pending JPS61159382A (en) | 1984-12-28 | 1984-12-28 | Manual hydraulic tool |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61159382A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0265022U (en) * | 1988-10-28 | 1990-05-16 | ||
JPH0473471U (en) * | 1990-10-31 | 1992-06-26 | ||
JPH0646876U (en) * | 1992-12-10 | 1994-06-28 | 株式会社泉精器製作所 | Piston rapid feed mechanism for manual hydraulic tools |
-
1984
- 1984-12-28 JP JP28075284A patent/JPS61159382A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0265022U (en) * | 1988-10-28 | 1990-05-16 | ||
JPH0473471U (en) * | 1990-10-31 | 1992-06-26 | ||
JPH0646876U (en) * | 1992-12-10 | 1994-06-28 | 株式会社泉精器製作所 | Piston rapid feed mechanism for manual hydraulic tools |
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