JPS6144191B2 - - Google Patents
Info
- Publication number
- JPS6144191B2 JPS6144191B2 JP56059182A JP5918281A JPS6144191B2 JP S6144191 B2 JPS6144191 B2 JP S6144191B2 JP 56059182 A JP56059182 A JP 56059182A JP 5918281 A JP5918281 A JP 5918281A JP S6144191 B2 JPS6144191 B2 JP S6144191B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- water
- cylinder
- striking
- striking 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 239000011435 rock Substances 0.000 claims description 11
- 238000005553 drilling Methods 0.000 claims description 9
- 238000009412 basement excavation Methods 0.000 claims description 3
- 238000009527 percussion Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Description
【発明の詳細な説明】
最近油圧駆動の打撃式ボーリング機が多用され
るようになつたが、この油圧式の欠点は作動油を
回収する必要上、高、低圧の２回路を必要とする
ことである。本発明は駆動圧に水圧を用いること
により１回路にした先端打撃式水力ボーリング機
を提供するものである。以下図に従つて本発明を
説明する。[Detailed Description of the Invention] Recently, hydraulically driven percussion boring machines have come into widespread use, but the drawback of this hydraulic type is that it requires two high-pressure and low-pressure circuits to recover hydraulic oil. It is. The present invention provides a tip percussion type hydraulic boring machine that uses water pressure as the driving pressure and has a single circuit. The present invention will be explained below with reference to the drawings.
第１図においてクローラ１に油圧シリンダ２，
２′を介してリーダ３を設け、前記リーダにロツ
ドの回転装置５と推進装置６からなる掘進機７を
装架し、該掘進機７にさく岩ロツド４を接続する
とともに該さく岩ロツドの中空部にクローラ１に
搭載された水圧ポンプ８で発生した高圧水を送り
こむ回転接手装置９を前記掘進機７に備える。さ
らに前記さく岩ロツド４に接続された中継ロツド
１０の先端に打撃装置１１を設ける。 In Fig. 1, the crawler 1 has a hydraulic cylinder 2,
A leader 3 is installed through the rock drill 2', and an excavator 7 consisting of a rod rotation device 5 and a propulsion device 6 is mounted on the leader, and a rock drilling rod 4 is connected to the excavator 7. The excavator 7 is equipped with a rotary joint device 9 that feeds high-pressure water generated by a water pressure pump 8 mounted on the crawler 1 into the hollow part. Further, a striking device 11 is provided at the tip of the relay rod 10 connected to the rock drilling rod 4.
前記打撃装置１１は第２図に示すごとく、一端
を中継ロツド１０に接続されたシリンダ１２の他
端に該シリンダ１２より回転力および推力が伝達
され、摺動自在に臨ましめられ、かつ打撃ピスト
ン１３により打撃されるビツト２３を設け、前記
シリンダ１２と打撃ピストン１３とで構成された
水室１４、水室１５を設け、該水室１５に常時高
圧水を供給して打撃ピストン１３を上向きに押圧
すると共に、水室１５より大なる受圧面積を有す
る水室１４に高圧水を給排して打撃ピストン１３
を往復動せしめる方向切換弁１６をシリンダ１２
に設け、方向切換弁１６のスプール１７を作動せ
しめるパイロツト圧をシリンダ１２の摺動面に開
口したパイロツトポート１８および給圧ポート１
９とドレンポート２０により給排すべく打撃ピス
トン１３の中央部に環状溝２１を設ける。また中
継ロツド１０の中空部より供給された高圧水は方
向切換弁１６に導入すると共に方向切換弁１６よ
り排出される打撃ピストン１３の駆動に用い終え
た低圧水は、前記ビツト２３の水路２２に導びか
れ、ビツト２３の先端より噴出する。 As shown in FIG. 2, the striking device 11 has one end connected to a relay rod 10, and the other end of which transmits rotational force and thrust to the other end of the cylinder 12. A bit 23 is provided which is struck by the piston 13, a water chamber 14 and a water chamber 15 are provided, each of which is composed of the cylinder 12 and the striking piston 13, and high pressure water is constantly supplied to the water chamber 15 to direct the striking piston 13 upward. The striking piston 13
The directional switching valve 16 that reciprocates the cylinder 12
A pilot port 18 and a supply pressure port 1 are provided at the cylinder 12 and open on the sliding surface of the cylinder 12 to apply pilot pressure to operate the spool 17 of the directional control valve 16.
An annular groove 21 is provided in the center of the striking piston 13 for supply and discharge through a drain port 20 and a drain port 20. Further, the high pressure water supplied from the hollow part of the relay rod 10 is introduced into the directional switching valve 16, and the low pressure water discharged from the directional switching valve 16, which has been used to drive the striking piston 13, is sent to the water channel 22 of the bit 23. It is guided and ejects from the tip of the bit 23.
かかる構成を有する本発明の水力ボーリング機
において、クローラ１に搭載された水圧ポンプ８
より吐出される高圧水を回転接手装置９、さく岩
ロツド４および中継ロツド１０の中空部を介して
打撃装置１１に導入することにより、水室１５が
高圧となり打撃ピストン１３は上昇し、パイロツ
トポート１８と給圧ポート１９とが環状溝２１を
介して連通すると、パイロツト圧が立上つてスプ
ール１７は摺動し、水室１４に高圧水が導入され
る。水室１４は水室１５より受圧面積が大なるた
め打撃ピストン１３は下降し、ビツト２３を打撃
する。 In the hydraulic boring machine of the present invention having such a configuration, the hydraulic pump 8 mounted on the crawler 1
By introducing high-pressure water discharged from the rotary joint device 9, the rock drilling rod 4, and the hollow part of the relay rod 10 into the striking device 11, the water chamber 15 becomes high pressure, and the striking piston 13 rises, and the pilot port 18 and the supply pressure port 19 communicate through the annular groove 21, pilot pressure rises, the spool 17 slides, and high pressure water is introduced into the water chamber 14. Since the water chamber 14 has a larger pressure receiving area than the water chamber 15, the striking piston 13 descends and strikes the bit 23.
同時にパイロツトポート１８とドレンポート２
０とが環状溝２１を介して連通し、パイロツト圧
が消失し、常時バネ力等で押圧されているスプー
ル１７がバネ力で反転し、水室１４の水圧が消失
し、打撃ピストン１３は再び水室１５の水圧力で
上昇する。かくして高圧水を導入することにより
打撃ピストン１３と方向切換弁１６の相互作用に
より打撃ピストン１３は振動し、ビツト２３を打
撃する。また掘進機７の回転装置５および推進装
置６により与えられる回転力と推力はさく岩ロツ
ド４、中継ロツド１０およびシリンダ１２を介し
てビツト２３に伝達され、ビツト１４の前面の岩
石類を破砕し、ビツト２３に設けた水路２２に導
入された低圧水により破砕ずりは排出される。 Pilot port 18 and drain port 2 at the same time
0 through the annular groove 21, the pilot pressure disappears, the spool 17, which is always pressed by spring force, etc. is reversed by the spring force, the water pressure in the water chamber 14 disappears, and the striking piston 13 is moved again. It rises due to the water pressure in the water chamber 15. Thus, by introducing high-pressure water, the striking piston 13 vibrates due to the interaction between the striking piston 13 and the directional control valve 16, and strikes the bit 23. Further, the rotational force and thrust given by the rotation device 5 and propulsion device 6 of the excavator 7 are transmitted to the bit 23 via the rock drilling rod 4, relay rod 10 and cylinder 12, and crush the rocks in front of the bit 14. The crushed shear is discharged by low pressure water introduced into the water channel 22 provided in the bit 23.
以上述べたように従来の油圧駆動のものは油の
２回路にずり出しの水回路が必要で、構造は複雑
となるが、本考案の水力ボーリング機は駆動圧に
水圧を用いた１回路の先端打撃式で、構造は簡単
で、安価である。 As mentioned above, conventional hydraulically driven machines require two oil circuits and an offset water circuit, making the structure complicated, but the hydraulic boring machine of the present invention uses water pressure as the drive pressure and has a single circuit. The tip is a striking type, and the structure is simple and inexpensive.
第１図は本発明による水力ボーリング機の側面
図、第２図は、本機の打撃装置の断面図である。
１……クローラ、２……油圧シリンダ、３……
リーダ、４……さく岩ロツド、５……回転装置、
６……推進装置、７……掘進機、８……水圧ポン
プ、９……回転接手装置、１０……中継ロツド、
１１……打撃装置、１２……シリンダ、１３……
打撃ピストン、１４，１５……水室、１６……方
向切換弁、１７……スプール、１８……パイロツ
トポート、１９……給圧ポート、２０……ドレン
ポート、２１……環状溝、２２……水路、２３…
…ビツト。
FIG. 1 is a side view of a hydraulic boring machine according to the present invention, and FIG. 2 is a sectional view of the striking device of the machine. 1...Crawler, 2...Hydraulic cylinder, 3...
Leader, 4...rock drilling rod, 5...rotating device,
6... Propulsion device, 7... Excavation machine, 8... Water pressure pump, 9... Rotating joint device, 10... Relay rod,
11...Blow device, 12...Cylinder, 13...
Impact piston, 14, 15... Water chamber, 16... Directional switching valve, 17... Spool, 18... Pilot port, 19... Pressure supply port, 20... Drain port, 21... Annular groove, 22... ...Waterway, 23...
…Bits.
Claims (1)
け、該リーダにロツドの回転装置と推進装置から
なる掘進機を装架し、該掘進機にさく岩ロツドを
接続するとともに該さく岩ロツドの中空部に、前
記クローラに搭載された水圧ポンプを介して発生
した高圧水を送り込む回転接手装置を設け、さら
に前記さく岩ロツドの先端に中継ロツドを介して
打撃装置を設けた水力ボーリング機において、前
記打撃装置をスプールで構成される方向切換弁
と、シリンダに摺動自在に嵌合した打撃ピストン
と、該打撃ピストンに振動を与えるため、前記シ
リンダと打撃ピストンで形成される受圧面積の異
なる二つの水室、および受圧面積の小なる水室に
常時高圧水を負荷せしめて打撃ピストンを上向き
に押圧すると共に、受圧面積の大なる水室に高圧
水を給排する前記方向切換弁を作動せしめるパイ
ロツト圧をシリンダの摺動面に開口したパイロツ
トポート、給圧ポート、ドレンポートにより給排
する前記打撃ピストンに設けた環状溝からなる高
圧水路系で構成するとともに、前記シリンダに摺
動自在に嵌合し、かつ回転力および推力が伝達さ
れるビツトに前記方向切換弁から排出される低圧
水を導びく水路を構成したことを特徴とする水力
ボーリング機。1. A leader is provided on the crawler via a hydraulic cylinder, an excavation machine consisting of a rod rotating device and a propulsion device is mounted on the leader, a rock drilling rod is connected to the excavation machine, and a rock drilling rod is connected to the hollow part of the rock drilling rod. , a hydraulic boring machine provided with a rotary joint device for feeding high-pressure water generated via a water pressure pump mounted on the crawler, and further provided with a striking device at the tip of the rock drilling rod via a relay rod, the striking device a directional control valve consisting of a spool, a striking piston slidably fitted into a cylinder, and two water chambers with different pressure-receiving areas formed by the cylinder and the striking piston in order to give vibration to the striking piston. , and pilot pressure that constantly loads high-pressure water into the water chamber with a small pressure-receiving area to press the striking piston upward, and operates the directional switching valve that supplies and discharges high-pressure water to the water chamber with a large pressure-receiving area. Consisting of a high-pressure waterway system consisting of an annular groove provided in the striking piston, which is supplied and discharged through a pilot port, a pressure supply port, and a drain port that open on the sliding surface of the cylinder, and is slidably fitted into the cylinder, A hydraulic boring machine, further comprising a water channel that guides low-pressure water discharged from the directional control valve to a bit to which rotational force and thrust are transmitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5918281A JPS57174590A (en) | 1981-04-21 | 1981-04-21 | Water powered boring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5918281A JPS57174590A (en) | 1981-04-21 | 1981-04-21 | Water powered boring machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57174590A JPS57174590A (en) | 1982-10-27 |
| JPS6144191B2 true JPS6144191B2 (en) | 1986-10-01 |
Family
ID=13106002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5918281A Granted JPS57174590A (en) | 1981-04-21 | 1981-04-21 | Water powered boring machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57174590A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS501323A (en) * | 1973-05-11 | 1975-01-08 |
-
1981
- 1981-04-21 JP JP5918281A patent/JPS57174590A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS501323A (en) * | 1973-05-11 | 1975-01-08 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57174590A (en) | 1982-10-27 |
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