JPH0581394U - Control device of hydraulic rock drill - Google Patents
Control device of hydraulic rock drillInfo
- Publication number
- JPH0581394U JPH0581394U JP2114092U JP2114092U JPH0581394U JP H0581394 U JPH0581394 U JP H0581394U JP 2114092 U JP2114092 U JP 2114092U JP 2114092 U JP2114092 U JP 2114092U JP H0581394 U JPH0581394 U JP H0581394U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- hydraulic pump
- drilling
- variable displacement
- pressure
- 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.)
- Granted
Links
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- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Earth Drilling (AREA)
Abstract
(57)【要約】
【目的】 油圧さく岩機にさく孔作業の状態に適合する
量の圧油を供給するよう制御し、リリーフによるエネル
ギーの損失と、作動油の劣化を防止し、状態が変化する
岩盤で能率良く正確なさく孔を行う。
【構成】 油圧さく岩機１と駆動用の油圧ポンプとを備
えたさく孔装置において、油圧ポンプを可変容量形油圧
ポンプ１１とし、可変容量形油圧ポンプ１１のサーボ機
構２１に油圧さく岩機１の駆動管路２０から油圧信号管
路２２を接続し、油圧信号管路２２に可変容量形油圧ポ
ンプ１１の吐出量を無段階に制御する信号圧操作弁１３
を設けた。
(57) [Summary] [Purpose] The hydraulic rock drilling machine is controlled to supply the amount of pressure oil that is suitable for the drilling work condition, which prevents energy loss due to relief and deterioration of the hydraulic oil. Efficient and accurate drilling with changing bedrock. In a drilling device including a hydraulic rock drill 1 and a driving hydraulic pump, the hydraulic pump is a variable displacement hydraulic pump 11, and a servo mechanism 21 of the variable displacement hydraulic pump 11 includes a hydraulic drill 1 Of the variable pressure hydraulic pump 11 to the hydraulic signal line 22 by connecting the hydraulic signal line 22 from the drive line 20 of the signal pressure control valve 13 in stepless manner.
Was established.
Description
【０００１】[0001]
本考案は、トンネル掘進用のドリルジャンボや石灰石や採石の採掘用のクロー ラドリル等のさく孔装置に搭載され、さく孔作業を行う油圧さく岩機の制御装置 に関する。 The present invention relates to a control device for a hydraulic rock drilling machine, which is mounted on a drilling device such as a drill jumbo for tunneling or a crow stone drill for limestone or quarrying and performs drilling work.
【０００２】[0002]
一般に、油圧さく岩機を搭載したさく孔装置の油圧ポンプは、図４に示すよう に、固定容量形油圧ポンプ８が使用されていた。この固定容量形油圧ポンプ８は 、エンジンや電動モータ等の原動機Ｍによって駆動されて圧油を吐出する。吐出 された圧油は操作弁１０を介して油圧さく岩機１に送られ、油圧さく岩機１を作 動させると共に、操作弁１５を介してさく孔装置の他のアクチュエータ（図示略 ）にも送られるようになっている。しかし、固定容量形油圧ポンプ８は、油圧さ く岩機１が作動していなくても他のアクチュエータを作動させるには一定量の圧 油を吐出し続けねばならず無駄なエネルギーを消費する。 In general, a fixed displacement hydraulic pump 8 was used as shown in FIG. 4 as a hydraulic pump of a drilling device equipped with a hydraulic rock drill. The fixed displacement hydraulic pump 8 is driven by a prime mover M such as an engine or an electric motor to discharge pressure oil. The discharged pressure oil is sent to the hydraulic rock drill 1 via the operation valve 10 to operate the hydraulic rock drill 1, and to the other actuator (not shown) of the drilling device via the operation valve 15. Will also be sent. However, the fixed displacement hydraulic pump 8 consumes useless energy because it must continue to discharge a certain amount of hydraulic oil in order to operate other actuators even when the hydraulic rock drill 1 is not operating.
【０００３】 そこで、図５に示すように、可変容量形油圧ポンプ１１を使用し、油圧さく岩 機１の駆動管路２０から減圧弁１２を介して可変容量形油圧ポンプ１１のサーボ 機構２１に油圧信号管路２２を接続して、油圧さく岩機１が作動しているときに は可変容量形油圧ポンプ１１の吐出量を大とし、油圧さく岩機１が作動していな いときには可変容量形油圧ポンプ１１の吐出量を小とするよう吐出量を２段階に 制御する制御機構も採用されている。Therefore, as shown in FIG. 5, a variable displacement hydraulic pump 11 is used, and a servo mechanism 21 of the variable displacement hydraulic pump 11 is connected from a drive line 20 of the hydraulic rock drill 1 via a pressure reducing valve 12. The hydraulic signal line 22 is connected to increase the discharge amount of the variable displacement hydraulic pump 11 when the hydraulic rock drill 1 is operating, and to change the variable displacement when the hydraulic rock drill 1 is not operating. A control mechanism that controls the discharge amount in two stages so that the discharge amount of the hydraulic pump 11 is small is also adopted.
【０００４】 このような油圧さく岩機によって岩盤にさく孔する場合、さく孔開始時の座繰 り作業や岩盤が亀裂や空洞で荒れている箇所でのさく孔作業では、油圧さく岩機 の力を落とし弱い力でさく孔する必要があり、従来は油圧さく岩機１の駆動管路 ２０に接続したリリーフ弁９の設定圧を段階的に変更して供給する圧油の圧力を 低下させるように制御していた。When drilling into rock mass with such a hydraulic rock drilling machine, when performing counter boring work at the start of drilling or drilling work where rock mass is roughened by cracks or cavities, the hydraulic rock drilling machine is used. It is necessary to reduce the force and punch with a weak force. Conventionally, the set pressure of the relief valve 9 connected to the drive line 20 of the hydraulic rock drill 1 is gradually changed to reduce the pressure of the supplied pressure oil. Was controlled.
【０００５】[0005]
しかしながら、さく孔開始時の座繰り作業や岩盤が亀裂や空洞で荒れている箇 所でのさく孔作業において、油圧さく岩機１の駆動管路２０に接続したリリーフ 弁９の設定圧を変更して供給する圧油の圧力を低下させるような圧力制御では、 可変容量形油圧ポンプ１１から吐出された圧油の一部がリリーフ弁９からタンク １４に戻されるとき圧油のエネルギーが熱に変換されて無駄に消費されるばかり でなく、作動油が劣化し、発熱した作動油の冷却が必要となり好ましくない。ま た、時々刻々状態が変化する岩盤でさく孔する場合、段階的な制御では能率良く 正確なさく孔が困難である。 However, the setting pressure of the relief valve 9 connected to the drive line 20 of the hydraulic rock drilling machine 1 is changed during the counter boring work at the start of drilling and the drilling work at the place where the rock is rough due to cracks and cavities. In pressure control such that the pressure of the pressure oil to be supplied is reduced, the energy of the pressure oil is converted into heat when part of the pressure oil discharged from the variable displacement hydraulic pump 11 is returned from the relief valve 9 to the tank 14. Not only is it converted and wastefully consumed, but the working oil deteriorates, and it is necessary to cool the heated working oil, which is not desirable. In addition, when drilling in rock that changes from moment to moment, it is difficult to drill efficiently and accurately with stepwise control.
【０００６】 本考案は、油圧ポンプの吐出量を無段階に制御して、油圧さく岩機にさく孔作 業の状態に適合する量の圧油を供給することができ、リリーフによるエネルギー の損失と、作動油の劣化を防止することができ、状態が変化する岩盤で連続的に 制御可能で能率良く正確なさく孔を行うことができる油圧さく岩機の制御装置を 提供することを目的とする。The present invention can control the discharge amount of the hydraulic pump in a stepless manner to supply the hydraulic rock drilling machine with an amount of pressure oil suitable for the condition of the drilling operation, resulting in energy loss due to relief. It is also an object of the present invention to provide a control device for a hydraulic rock drill that can prevent deterioration of hydraulic oil and can perform continuous and efficient drilling on a rock that changes in state, enabling efficient and accurate drilling. To do.
【０００７】[0007]
本考案は、上記課題を解決するため、油圧さく岩機と駆動用の油圧ポンプとを 備えたさく孔装置において、油圧ポンプを可変容量形油圧ポンプとし、可変容量 形油圧ポンプのサーボ機構に油圧さく岩機の駆動管路から分岐して油圧信号管路 を接続し、この油圧信号管路に可変容量形油圧ポンプの吐出量を無段階に制御す る信号圧操作弁を設けている。 In order to solve the above problems, the present invention provides a drilling device equipped with a hydraulic rock drilling machine and a driving hydraulic pump, in which the hydraulic pump is a variable displacement hydraulic pump, and the servo mechanism of the variable displacement hydraulic pump is hydraulically operated. A hydraulic signal conduit is branched from the drive line of the rock drill, and a signal pressure control valve that controls the discharge rate of the variable displacement hydraulic pump steplessly is installed in this hydraulic signal conduit.
【０００８】[0008]
可変容量形油圧ポンプのサーボ機構は、信号圧によって可変容量形油圧ポンプ の吐出量を変化させる。吐出量の変化開始圧と変化終了圧との間では、吐出量が 信号圧に比例して変化するため、信号圧操作弁を操作して信号圧を無段階に変更 制御することにより、油圧さく岩機にはさく孔作業の状態に適合する量の圧油が 供給される。従って、余剰の圧油をリリーフする必要がなくエネルギーの損失と 、作動油の劣化が防止される。 The servo mechanism of the variable displacement hydraulic pump changes the discharge amount of the variable displacement hydraulic pump according to the signal pressure. Since the discharge amount changes in proportion to the signal pressure between the change start pressure and the change end pressure of the discharge amount, the signal pressure control valve is operated to change the signal pressure steplessly to control the hydraulic pressure. The rock machine is supplied with an amount of pressure oil suitable for the drilling condition. Therefore, it is not necessary to relieve excess pressure oil, and energy loss and deterioration of hydraulic oil are prevented.
【０００９】[0009]
図１は、本考案の実施例である油圧さく岩機の制御装置を備えたトンネル掘進 用のドリルジャンボの全体構成の説明図である。ここで、ドリルジャンボＪは、 台車４前部にさく孔用ブーム３を枢支し、このさく孔用ブーム３で油圧さく岩機 １を搭載したガイドシェル２を支持している。台車４上には、操作部５と油圧パ ック６が設けられている。 FIG. 1 is an explanatory diagram of the overall configuration of a drill jumbo for tunnel excavation equipped with a control device for a hydraulic rock drilling machine according to an embodiment of the present invention. Here, the drill jumbo J pivotally supports a boom 3 for drilling in the front part of the bogie 4, and the boom 3 for drilling supports the guide shell 2 carrying the hydraulic rock drill 1. An operation unit 5 and a hydraulic pack 6 are provided on the carriage 4.
【００１０】 図２は、本考案の実施例の油圧回路の説明図である。ここで、可変容量形油圧 ポンプ１１の吐出管路１８は、操作弁１０を介して油圧さく岩機１の駆動管路２ ０に接続されると共に、操作弁１５を介してさく孔装置の他のアクチュエータ（ 図示略）にも接続されている。可変容量形油圧ポンプ１１のサーボ機構２１には 、油圧さく岩機１の駆動管路２０から分岐して油圧信号管路２２が接続されてい る。この油圧信号管路２２には、減圧弁１２と信号圧操作弁１３とが設けられて おり、減圧弁１２は油圧信号管路２２の最高圧力を規制する。信号圧操作弁１３ は手動操作の可変減圧弁であり、手動ハンドルの操作量によって油圧信号管路２ ２の信号圧を無段階に変化させ、図３に示すように、吐出量の変化開始圧Ｐ1 か ら変化終了圧Ｐ2 との間で、可変容量形油圧ポンプ１１の吐出量を最小吐出量Ｑ 1 から最大吐出量Ｑ2 まで無段階に制御することができる。FIG. 2 is an explanatory diagram of a hydraulic circuit according to the embodiment of the present invention. Here, the discharge pipe line 18 of the variable displacement hydraulic pump 11 is connected to the drive pipe line 20 of the hydraulic rock drill 1 via the operation valve 10 and the drilling device other than the drilling device via the operation valve 15. Is also connected to the actuator (not shown). The servo mechanism 21 of the variable displacement hydraulic pump 11 is connected to a hydraulic signal line 22 branching from the drive line 20 of the hydraulic rock drill 1. The hydraulic signal line 22 is provided with a pressure reducing valve 12 and a signal pressure control valve 13, and the pressure reducing valve 12 regulates the maximum pressure of the hydraulic signal line 22. The signal pressure operation valve 13 is a manually operated variable pressure reducing valve, which continuously changes the signal pressure of the hydraulic signal line 22 according to the operation amount of the manual handle, and as shown in FIG. P1Change end pressure P2Between the discharge amount of the variable displacement hydraulic pump 11 and the minimum discharge amount Q 1 To the maximum discharge amount Q2Can be controlled steplessly.
【００１１】 さく孔作業の際には、まず操作部５の操作弁１５を操作してドリルジャンボＪ のさく孔用ブーム３を作動させ、ガイドシェル２をさく孔位置に合わせる。この とき油圧さく岩機１はまだ作動していないため、油圧信号管路２２の信号圧は０ であり、可変容量形油圧ポンプ１１の圧油の吐出量は、図３に示す最小吐出量Ｑ 1 となっている。次に操作弁１０を操作して可変容量形油圧ポンプ１１の吐出管 路１８を油圧さく岩機１の駆動管路２０に連通させさく孔を開始する。座繰り作 業時には、信号圧操作弁１３の手動ハンドルの操作量を小さくとることにより可 変容量形油圧ポンプ１１の吐出量の増加は少なくなり、油圧さく岩機１には座繰 りに適当な弱い打撃力を与える少量の圧油が供給される。座繰り作業がすむと信 号圧操作弁１３の手動ハンドルの操作量を大きくとり、可変容量形油圧ポンプ１ １の吐出量を増加させて、油圧さく岩機１にさく孔に必要な打撃力を与える大量 の圧油を供給する。岩盤が亀裂や空洞で荒れている箇所では信号圧操作弁１３の 手動ハンドルの操作量を小さくとることにより可変容量形油圧ポンプ１１の吐出 量を減少させ、油圧さく岩機１には岩盤の状態に適合する弱い打撃力を与えるよ うにする。At the time of drilling work, first, the operating valve 15 of the operating portion 5 is operated to operate the drilling boom 3 of the drill jumbo J, and the guide shell 2 is aligned with the drilling position. At this time, since the hydraulic rock drill 1 has not been operated yet, the signal pressure of the hydraulic signal line 22 is 0, and the discharge amount of the pressure oil of the variable displacement hydraulic pump 11 is the minimum discharge amount Q shown in FIG. 1 Has become. Next, the operation valve 10 is operated to connect the discharge line 18 of the variable displacement hydraulic pump 11 to the drive line 20 of the hydraulic rock drilling machine 1 to start the drilling. At the time of counter boring operation, the amount of operation of the manual handle of the signal pressure control valve 13 is made small so that the increase in the discharge amount of the variable displacement hydraulic pump 11 is small, and the hydraulic rock drill 1 is suitable for counter boring. A small amount of pressure oil that gives a very weak impact force is supplied. When the counter boring work is completed, the operation amount of the manual handle of the signal pressure operation valve 13 is increased to increase the discharge amount of the variable displacement hydraulic pump 11 to increase the impact force required for the drilling hole of the hydraulic rock drill 1. Supply a large amount of pressure oil. When the bedrock is rough with cracks or cavities, the amount of operation of the manual handle of the signal pressure control valve 13 is reduced to reduce the discharge rate of the variable displacement hydraulic pump 11, and the hydraulic rock drill 1 is in the condition of the bedrock. Try to give a weak striking force that conforms to.
【００１２】[0012]
以上説明したように、本考案の油圧さく岩機の制御装置によれば、油圧ポンプ の吐出量を無段階に制御して、油圧さく岩機にさく孔作業の状態に適合する量の 圧油を供給することができ、リリーフによるエネルギーの損失と、作動油の劣化 を防止することができる。また、状態が変化する岩盤において、打撃力を無段階 に制御可能で能率良く正確なさく孔を行うことができる。 As described above, according to the control device for a hydraulic rock drilling machine of the present invention, the discharge amount of the hydraulic pump is controlled steplessly, and the amount of pressure oil suitable for the drilling work condition of the hydraulic rock drilling machine is set. Can be supplied, and energy loss due to relief and deterioration of hydraulic oil can be prevented. In addition, in rocks where the condition changes, the impact force can be controlled steplessly and efficient and accurate drilling can be performed.
【図１】本考案の実施例である油圧さく岩機の制御装置
を備えたトンネル掘進用のドリルジャンボの全体構成の
説明図である。FIG. 1 is an explanatory view of the overall configuration of a drill jumbo for tunnel excavation including a control device for a hydraulic rock drilling machine according to an embodiment of the present invention.
【図２】本考案の実施例の油圧回路の説明図である。FIG. 2 is an explanatory diagram of a hydraulic circuit according to an embodiment of the present invention.
【図３】信号圧と可変容量形油圧ポンプの吐出量との関
係を示す性能線図である。FIG. 3 is a performance diagram showing a relationship between a signal pressure and a discharge amount of a variable displacement hydraulic pump.
【図４】従来の油圧さく岩機の制御装置の油圧回路の説
明図である。FIG. 4 is an explanatory diagram of a hydraulic circuit of a conventional control device for a hydraulic rock drill.
【図５】従来の油圧さく岩機の制御装置の油圧回路の説
明図である。FIG. 5 is an explanatory diagram of a hydraulic circuit of a conventional control device for a hydraulic rock drill.
１ 油圧さく岩機 ２ ガイドシェル ３ ブーム ４ 台車 ５ 操作部 ６ 油圧パック １０ 操作弁 １１ 可変容量形油圧ポンプ １２ 減圧弁 １３ 信号圧操作弁 １８ 吐出管路 ２０ 駆動管路 ２１ サーボ機構 ２２ 油圧信号管路 1 hydraulic rock drill 2 guide shell 3 boom 4 trolley 5 operating part 6 hydraulic pack 10 operating valve 11 variable displacement hydraulic pump 12 pressure reducing valve 13 signal pressure operating valve 18 discharge pipe 20 drive pipe 21 servo mechanism 22 hydraulic signal pipe Road
Claims (1)
備えたさく孔装置において、前記油圧ポンプを可変容量
形油圧ポンプとし、該可変容量形油圧ポンプのサーボ機
構に前記油圧さく岩機の駆動管路から分岐して油圧信号
管路を接続し、該油圧信号管路に可変容量形油圧ポンプ
の吐出量を無段階に制御する信号圧操作弁を設けたこと
を特徴とする油圧さく岩機の制御装置。1. A drilling device comprising a hydraulic rock drill and a driving hydraulic pump, wherein the hydraulic pump is a variable displacement hydraulic pump, and the hydraulic rock drill is used as a servo mechanism of the variable displacement hydraulic pump. A hydraulic punch comprising a hydraulic pressure signal line connected to the hydraulic pressure signal line and a signal pressure control valve for steplessly controlling the discharge amount of the variable displacement hydraulic pump. Rock machine control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992021140U JP2573778Y2 (en) | 1992-04-07 | 1992-04-07 | Hydraulic rock drill control equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992021140U JP2573778Y2 (en) | 1992-04-07 | 1992-04-07 | Hydraulic rock drill control equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0581394U true JPH0581394U (en) | 1993-11-05 |
| JP2573778Y2 JP2573778Y2 (en) | 1998-06-04 |
Family
ID=12046597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992021140U Expired - Fee Related JP2573778Y2 (en) | 1992-04-07 | 1992-04-07 | Hydraulic rock drill control equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2573778Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727818A (en) * | 2020-12-25 | 2021-04-30 | 中铁工程装备集团隧道设备制造有限公司 | Hydraulic control system of rock drill |
-
1992
- 1992-04-07 JP JP1992021140U patent/JP2573778Y2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727818A (en) * | 2020-12-25 | 2021-04-30 | 中铁工程装备集团隧道设备制造有限公司 | Hydraulic control system of rock drill |
| CN112727818B (en) * | 2020-12-25 | 2023-03-21 | 中铁工程装备集团隧道设备制造有限公司 | Hydraulic control system of rock drill |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2573778Y2 (en) | 1998-06-04 |
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