JPS5819436B2 - Hydraulic breaker or hydraulic rock drill equipped with a two-stage piston mechanism and a control valve linked to it - Google Patents
Hydraulic breaker or hydraulic rock drill equipped with a two-stage piston mechanism and a control valve linked to itInfo
- Publication number
- JPS5819436B2 JPS5819436B2 JP8194677A JP8194677A JPS5819436B2 JP S5819436 B2 JPS5819436 B2 JP S5819436B2 JP 8194677 A JP8194677 A JP 8194677A JP 8194677 A JP8194677 A JP 8194677A JP S5819436 B2 JPS5819436 B2 JP S5819436B2
- Authority
- JP
- Japan
- Prior art keywords
- piston
- control valve
- pressure oil
- hydraulic
- stage piston
- 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
Landscapes
- Percussive Tools And Related Accessories (AREA)
Description
【発明の詳細な説明】
本発明は油圧ブレーカ−又は油圧さく岩槻に係り、特に
２段ピストン機構とそれに連動するコントロールバルブ
を内装する油圧ブレーカ−１又はさく岩槻に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hydraulic breaker or a hydraulic rock breaker, and more particularly to a hydraulic breaker 1 or a hydraulic rock breaker equipped with a two-stage piston mechanism and a control valve interlocked therewith.
油圧式のブレーカ−やさく岩槻は圧搾空気を用いるもの
に比べ約３倍の効率を示し、作業能率が著しく増進する
ものであるが、本発明は性能が優れた油圧ブレーカ−１
油圧さく岩槻における従来の構成を改め、殊に圧力油の
流通路を改良しシリンダー内の油の流れを合理的なもの
となし、全体の効率を一層向上させることを目的として
創案したものである。The hydraulic breaker Yasaku Iwatsuki is about three times more efficient than the one that uses compressed air, significantly improving work efficiency, but the present invention is a hydraulic breaker with excellent performance.
This system was created with the aim of improving the conventional configuration of the hydraulic pump Iwatsuki, and in particular improving the pressure oil flow path to streamline the oil flow within the cylinder and further improve overall efficiency. .
従来の油圧ブレーカ−は狭隘な同一シリンダー内にピス
トンとコントロールバルブを並列に装着し摺動向即ちピ
ストンの軸方向と直角に圧力油の供給口及び排油口を形
成し構造が狭隘のためコントロールバルブの排油口面積
を十分に取ることができず、従ってシリンダー内での圧
力油の流れも円滑さを欠き、機械の打撃効率が悪い欠点
があった。Conventional hydraulic breakers have a piston and a control valve installed in parallel in the same narrow cylinder, with the pressure oil supply port and oil drain port being perpendicular to the axial direction of the piston. The area of the oil drain port could not be taken up sufficiently, and therefore the flow of pressure oil within the cylinder lacked smoothness, resulting in poor impact efficiency of the machine.
本発明はシリンダー外にコントロールバルブを設けて従
来の油圧ブレーカ−又は油圧さく岩槻の欠陥を解消した
ものでその要旨とするところは次のとおりである。The present invention eliminates the deficiencies of conventional hydraulic breakers or hydraulic breakers by providing a control valve outside the cylinder, and the gist thereof is as follows.
即ち本発明は、本体シリンダー内のピストンに段部を設
けて上方を小ピストン、下方を大ピストンの２段形とな
し、かつ圧力油の供給及び排出口を前記２段ピストンの
軸方向と同方向に設け、又小ピストンの先に突設したロ
ンドの周りにコントロールバルブを装備し、該コントロ
ールバルフハ２段ピストンを押下げる圧力油の通路に中
介して、２段ピストンの下死点付近において圧力油によ
り作動し、２段ピストンへの圧力油の供給を遮断し、２
段ピストンの上昇によってコントロールバルブを解放す
ることを特徴とする２段ピストン機構とそれに連動する
コントロールバルブを内装する油圧ブレーカ−又は油圧
さく岩槻である。That is, in the present invention, the piston in the main body cylinder is provided with a step so that the upper part is a small piston and the lower part is a large piston, and the pressure oil supply and discharge ports are arranged in the same axial direction as the two-stage piston. A control valve is installed around the rond protruding from the tip of the small piston, and the control valve is inserted into the pressure oil passage that pushes down the second-stage piston, near the bottom dead center of the second-stage piston. It is operated by pressure oil at
This is a hydraulic breaker or hydraulic rock hammer equipped with a two-stage piston mechanism and a control valve linked thereto, which is characterized in that the control valve is released by the rise of the stage piston.
次に油圧ブレーカ−を例にとり本発明の具体的構成を図
面に従って説明する。Next, a specific configuration of the present invention will be explained with reference to the drawings, taking a hydraulic breaker as an example.
図において１はブレーカ一本体シリンダー、２は段部３
を上方に形影し大ピストン２ａと小ピストン２ｂに区画
した２段ピストンでチゼル４に打撃を与えるため上下運
動する。In the figure, 1 is the breaker main body cylinder, 2 is the stepped part 3
A two-stage piston shaped upwardly and divided into a large piston 2a and a small piston 2b moves up and down to strike the chisel 4.
しかして２段ピストン２は段部３の下方において頚部５
を設け、下方小径部２′とシリンダー内壁６との間にピ
ストン上昇のための圧力油侵入空隙７を形成し、ブレー
カ一本体シリンダー１の上方周側からピストンの軸方向
に沿って開設した圧力油供給通路８をピストン上昇用油
侵入空隙７に連絡させると共に、段部３の上方に形成さ
れたピストン下降用圧力油の侵入空隙９にも連絡する供
給通路１０を設けである。Therefore, the second stage piston 2 has a neck 5 below the stage 3.
A pressure oil inlet gap 7 for the piston to rise is formed between the lower small diameter portion 2' and the cylinder inner wall 6, and pressure is created from the upper circumferential side of the breaker main body cylinder 1 along the axial direction of the piston. A supply passage 10 is provided which communicates the oil supply passage 8 with the piston-raising oil entry gap 7 and also with the piston-lowering pressure oil entry gap 9 formed above the step portion 3.
そして上部段部３の面積９はピストン上外用油侵入空隙
７０面積より太き（しである。The area 9 of the upper step portion 3 is larger than the area 70 of the piston upper/external oil inlet gap 70.
２段ピストン２の上端にロッド１１を一体に突設してそ
の周りに筒状のコントロールバルブ１２を摺嵌する。A rod 11 is integrally protruded from the upper end of the two-stage piston 2, and a cylindrical control valve 12 is slidably fitted around the rod 11.
このコントロールバルブ１２は２段ピストン２０頚部５
と連絡する油路１３を上端に導入し油路１３に圧力油が
入るとその圧力で下降してピストンの圧力油供給口１４
を塞ぐようにしである。This control valve 12 has a two-stage piston 20 neck 5
An oil passage 13 that communicates with the oil passage 13 is introduced into the upper end, and when pressure oil enters the oil passage 13, it descends due to the pressure and flows to the pressure oil supply port 14 of the piston.
It's like blocking it.
又シリンダー内壁６の中間部位とコントロールバルブ１
２が位置する広い空隙１５なそれぞれ排油通路１６に連
絡させである。Also, the intermediate part of the cylinder inner wall 6 and the control valve 1
2 are located in a wide gap 15, each of which communicates with an oil drain passage 16.
尚図中１７は圧力油供給通路８の途中に形成したアキュ
ムレータで内部に窒素ガスを充填し、ダイヤフラム１８
を張設して窒素ガスと油とを遮断し所要油量の不足分を
補給する作用を行なう。In the figure, 17 is an accumulator formed in the middle of the pressure oil supply passage 8, the inside of which is filled with nitrogen gas, and the diaphragm 18
This acts to cut off the nitrogen gas and oil and replenish the required amount of oil.
更に１９はコントロールバルブ１２の下降運動による切
替を円滑に行うために、その上方に複数本配装したロッ
ドで圧力油供給通路８と連絡する岐路２０内に収容して
圧力油でコントロールバルブの上面を押圧する。Furthermore, in order to smoothly perform switching by the downward movement of the control valve 12, a plurality of rods are disposed above the control valve 12 and are accommodated in a branch 20 communicating with the pressure oil supply passage 8. Press.
以上の構成から成る本発明に係る油圧ブレーカ−の作動
状態につ℃・て説明する。The operating state of the hydraulic breaker according to the present invention having the above configuration will be explained below.
第１図は２段ピストン２が上死点にある状態を示し、こ
ｋで圧力油Ｐは侵入空隙７に入っていてコントロールバ
ルブ１２は圧力油供給口１４を開放しており２段ピスト
ン２の小ピストン２ｂと本体１との間は細隙よりピスト
ン２の上方の侵入空隙９に圧力油Ｐが入り、侵入空隙７
との面積の差によって２段ピストンを下降させ第２図は
打撃位置の状態を示し、このとき段部３が油路１３を開
けるため圧力油は侵入空隙９からコントロールバルブ１
２の上方に流れ、該バルブ１２を下降させる。FIG. 1 shows a state in which the second stage piston 2 is at the top dead center, where the pressure oil P has entered the intrusion gap 7, the control valve 12 has opened the pressure oil supply port 14, and the second stage piston 2 Between the small piston 2b and the main body 1, pressure oil P enters the intrusion gap 9 above the piston 2 through a narrow gap, and the intrusion gap 7
The two-stage piston is lowered due to the difference in area between
2 and lowers the valve 12.
従って圧力油供給口１４はコントロールバルブ１２によ
り閉鎖されるので、（第３図参照）油は侵入空隙９と遮
断され、下方の侵入空隙７に入り侵入空隙９内の油は排
油通路１６より排出し、ピストン２は上昇する。Therefore, since the pressure oil supply port 14 is closed by the control valve 12 (see FIG. 3), the oil is cut off from the inlet gap 9, enters the inlet gap 7 below, and the oil in the inlet gap 9 is drained from the oil drain passage 16. The piston 2 rises.
この動作で油路１３は塞がり油路１３内の油も排出され
、又ピストンの上端でコントロールバルブを押上げるた
め（第４図参照）圧力油供給口１４は開き第１図の状態
に戻νる。With this operation, the oil passage 13 is closed and the oil in the oil passage 13 is also discharged, and since the upper end of the piston pushes up the control valve (see Figure 4), the pressure oil supply port 14 opens and returns to the state shown in Figure 1. Ru.
上記の動作を繰返し行ない、チゼルに打撃力を与えるの
であって、本発明によれば、圧力油はピストンの上下に
加わる。The above operations are repeated to apply striking force to the chisel, and according to the present invention, pressure oil is applied above and below the piston.
又ピストンに対して軸方向に供給し排出するのでシリン
ダー内の圧力油の；流れは円滑となり又２段ピストンと
連動するコントロールバルブの排油口面積は十分な広さ
に取り得るためコントロールバルブの効率が良好となり
極めて効率の良い、換言すれば至極打撃数が多く性能の
優れたブレーカ−又はさく岩槻を提供する）ことが可能
である。In addition, since the pressure oil in the cylinder is supplied and discharged in the axial direction to the piston, the flow of pressure oil in the cylinder is smooth, and the area of the oil drain port of the control valve that works with the two-stage piston can be made sufficiently wide, so that the control valve This makes it possible to provide a breaker or rock drill with extremely high efficiency (in other words, a breaker or rock drill with an extremely high number of strikes and excellent performance).
しかも作動は正確かつ円滑に行われる効果がある。Moreover, the effect is that the operation is performed accurately and smoothly.
図面は本発明に係る２段ピストン機構とそれに連動する
コントロールバルブを内装する油圧ブレ・−カー又はさ
く岩槻の一実施例を示したもので、第１図はピストンが
下降する直前即ち上死点の縦断正面図、第２図はピスト
ンが下死点即ち打撃時の状態を示す縦断正面図、第３図
はピストンが下死点より上昇する状態を示す縦断正面図
、第４図ンはピストン上昇し小ヒストンでコントロール
バルブを押上げはじめた状態を示す縦断正面図である。
１・・・・・°ブレーカ一本体シリンダー、２・・・・
・・２段ピストン、２ａ・・・・・・大ピストン、２ｂ
・・・・・・小ピストン、３・・・・・・段部、４・・
・・・・チゼル、６・・・・・・内壁、７・・・・・・
ピストン上昇用圧力油侵入空隙、８・・・・・・圧力油
供給通路、９・・・・・・ピストン下降用圧力油侵入空
隙、１０・・・・・・油供給通路、１２・・・・・・コ
ントロールバルブ、１３・・・・・・油路、１４・・・
・・・圧力油供給口。The drawings show an embodiment of a hydraulic breaker or breaker equipped with a two-stage piston mechanism and a control valve linked thereto according to the present invention. Fig. 2 is a longitudinal sectional front view showing the piston in its bottom dead center, that is, the state at the time of impact, Fig. 3 is a longitudinal sectional front view showing the piston rising from the bottom dead center, and Fig. 4 shows the piston. FIG. 6 is a longitudinal sectional front view showing a state in which the control valve is started to be pushed up by the small histone. 1...°Breaker - body cylinder, 2...
...Two-stage piston, 2a...Large piston, 2b
...Small piston, 3...Stepped part, 4...
...Chisel, 6...Inner wall, 7...
Pressure oil entry gap for piston elevation, 8...Pressure oil supply passage, 9...Pressure oil entry gap for piston descent, 10...Oil supply passage, 12... ...Control valve, 13...Oil passage, 14...
...Pressure oil supply port.
Claims (1)
小ピストン、下方を大ピストンの２段形となし、かつ圧
力油の供給及び排出口を前記２段ピストンの軸方向と同
方向に設け、又小ピストンの先に突設したロンドの周り
にコントロールバルブヲ装備し、該コントロールバルブ
は２段ピストンを押下げる圧力油の通路に中介して、２
段ピストンの下死点付近において圧力油により作動し、
２段ピストンへの圧力油の供給を遮断し、２段ピストン
の上昇によってコントロールバルブを解放することを特
徴とする２段ピストン機構とそれに連動スるコントロー
ルバルブを内装する油圧ブレーカ−又は油圧さく岩槻。1. A piston in the main body cylinder is provided with a stepped part to form a two-stage structure with a small piston at the top and a large piston at the bottom, and pressure oil supply and discharge ports are provided in the same direction as the axial direction of the two-stage piston, In addition, a control valve is installed around the rond protruding from the tip of the small piston, and the control valve is inserted into the pressure oil passage that presses down the second-stage piston.
Operated by pressure oil near the bottom dead center of the stage piston,
A hydraulic breaker or hydraulic brake Iwatsuki is equipped with a two-stage piston mechanism and a control valve linked thereto, which is characterized by cutting off the supply of pressure oil to the second-stage piston and releasing the control valve when the second-stage piston rises. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8194677A JPS5819436B2 (en) | 1977-07-11 | 1977-07-11 | Hydraulic breaker or hydraulic rock drill equipped with a two-stage piston mechanism and a control valve linked to it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8194677A JPS5819436B2 (en) | 1977-07-11 | 1977-07-11 | Hydraulic breaker or hydraulic rock drill equipped with a two-stage piston mechanism and a control valve linked to it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5417305A JPS5417305A (en) | 1979-02-08 |
| JPS5819436B2 true JPS5819436B2 (en) | 1983-04-18 |
Family
ID=13760659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8194677A Expired JPS5819436B2 (en) | 1977-07-11 | 1977-07-11 | Hydraulic breaker or hydraulic rock drill equipped with a two-stage piston mechanism and a control valve linked to it |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5819436B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ516798A (en) * | 2002-07-24 | 2004-07-30 | Bantry Ltd | Sonic drilling |
-
1977
- 1977-07-11 JP JP8194677A patent/JPS5819436B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5417305A (en) | 1979-02-08 |
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