JPS61216939A - Oil pressure switcher for operating machine of construction machine - Google Patents

Oil pressure switcher for operating machine of construction machine

Info

Publication number
JPS61216939A
JPS61216939A JP5667985A JP5667985A JPS61216939A JP S61216939 A JPS61216939 A JP S61216939A JP 5667985 A JP5667985 A JP 5667985A JP 5667985 A JP5667985 A JP 5667985A JP S61216939 A JPS61216939 A JP S61216939A
Authority
JP
Japan
Prior art keywords
machine
switching
oil
hydraulic
operating
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
Application number
JP5667985A
Other languages
Japanese (ja)
Inventor
Masami Kondo
正美 近藤
Takuzo Kawamura
卓蔵 河村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yanmar Co Ltd
Original Assignee
Yanmar Diesel Engine Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yanmar Diesel Engine Co Ltd filed Critical Yanmar Diesel Engine Co Ltd
Priority to JP5667985A priority Critical patent/JPS61216939A/en
Publication of JPS61216939A publication Critical patent/JPS61216939A/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2292—Systems with two or more pumps
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Operation Control Of Excavators (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

PURPOSE:To permit the body side operation and at-hand operation of the second operating machine as well as permit keeping the switching position of the second operating machine side by providing a switcher for oil-pressure switching valves of the first operating machine attached on the machine body side and the second operating machine to be used away from the first operating machine on the machine body side. CONSTITUTION:In a switching valve 29 for the first oil-pressure breaker to be used in the attached state to the machine body side and the second oil- pressure breaker with its oil pressure switcher to be used away from the machine body side, the first and second oil switching valves 26 and 27 for excavator, etc., are provided on the discharge side of the first and second oil-pressure pumps 23 and 24. A valve 29 is provided on the way of the confluence oil path 28 of the valves 26 and 27, and a neutral position 30 leading oil path 28 to a tank and switching positions 31 and 32 toward the first and second oil pressure breakers are each provided to the valve 29. Grooves 37, 37 are provided in the spool 34 of an operating pedal 33 set to the machine body to enable the positions 30 and 32 to be held.

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、建設機械の作業機用油圧切換え装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a hydraulic switching device for a working machine of construction machinery.

従来の技術 バックホー等の建設機械においては、機体に備え付けら
れた主作業機即ち掘削装置の他に、ブレーカ等の補助作
業機を油圧回路へ接続して使用できるようになっている
。この場合の補助作業機は、機体例えば主作業機へ固定
して使用する場合と、油圧配管のみ機体側へ接続し、作
業機本体を機体から離れた位置で使用する場合とがある
。BACKGROUND OF THE INVENTION In construction machines such as backhoes, in addition to the main working machine, ie, the excavating device, installed on the machine body, an auxiliary working machine such as a breaker can be connected to a hydraulic circuit for use. In this case, the auxiliary work machine may be used by being fixed to the machine body, for example, the main work machine, or may be used in a position where only the hydraulic piping is connected to the machine body side and the work machine main body is separated from the machine body.

発明が解決しようとする問題点 上記の如く補助作業機を接続使用する場合、該補助作業
機を機体側へ装着した場合には、該機体の運転席から操
作できなければならないし、他方、機体から離れて作業
を行なう場合には、補助作業機本体の操作具を用いて手
元操作を行なうことが望まれる。しかしながら、従来に
おいては、これら両者の使用！３様に応じて油圧を切換
えるようにしたものはなく、そのため、補助作業機を機
体側から操作するようにしたものでは手元操作ができず
、他方、手元操作をできるようにしたものでは機体から
の操作ができないといった不都合があった。Problems to be Solved by the Invention When an auxiliary work machine is connected and used as described above, when the auxiliary work machine is attached to the machine body, it must be possible to operate it from the driver's seat of the machine body. When working remotely, it is desirable to use the operating tool on the auxiliary work machine body to operate it at hand. However, in the past, both of these were used! There is no model that allows the hydraulic pressure to be changed depending on the type of operation, and therefore, models that allow auxiliary work equipment to be operated from the machine side cannot be operated at hand, while models that can be operated at hand do not have the ability to switch the hydraulic pressure from the machine body. There were some inconveniences such as not being able to operate the

即ち、この発明は、かかる欠点を解消して、補助作業機
を機体側に装着した場合には機体側で操作でき、他方、
機体から離れて使用する場合には補助作業機自体に備わ
っている操作具によって手元操作を行なうことのできる
建設機械の作業機用油圧切換え装置を提供することを目
的としている。That is, the present invention eliminates such drawbacks, and when the auxiliary working machine is attached to the machine body, it can be operated from the machine body, and on the other hand,
It is an object of the present invention to provide a hydraulic switching device for a working machine of a construction machine, which can be operated at hand using an operating tool provided on the auxiliary working machine itself when used away from the machine body.

問題点を解決するための手段 この発明によれば、まず、機体側へ装着した状態で使用
される第１の作業機（１８）と、機体より離れた位置で
使用され、かつ、それ自体に油圧の切換え操作具を備え
た第２の作業機（２１）とを選択的に接続使用するもの
において、第１の作業機（１Ｂ）へ油圧を供給する第１
の切換位置（３１）と第２の作業機（２１）へ圧油を供
給する第２の切換位置（３２）とを備えた切換弁（２９
）が提供される。Means for Solving the Problems According to the present invention, first, the first work machine (18) is used while attached to the machine body, and the first work machine (18) is used at a position remote from the machine body and is attached to the machine body. In a device that is selectively connected to a second working machine (21) equipped with a hydraulic pressure switching operation tool, the first working machine (1B) supplies hydraulic pressure to the first working machine (1B).
switching position (31) and a second switching position (32) for supplying pressure oil to the second working machine (21).
) is provided.

この切換弁（２９）は、機体側に装備される該切換弁（
２９）の操作具（３３）を前記第２の切換位置（３２）
に切換えると、この切換弁（２９）等に備わっている保
持機構（３７）によって、該第２の切換位置（３２）に
切換え保持できるようになっている。This switching valve (29) is equipped on the aircraft side.
29) to the second switching position (32).
When the switch is switched to the second switching position (32), the holding mechanism (37) provided in the switching valve (29) etc. can switch and hold the switch to the second switching position (32).

作　　用 即ち、切換弁（２９）を第２の切換位置（３２）へ切換
えると、機体より離れた位置で使用される補助作業機（
２１）側へ常に圧油が供給さる状態となり、従って、こ
の補助作業機（２１）に設けられた操作具によって手元
操作を行なうことができる。In other words, when the switching valve (29) is switched to the second switching position (32), the auxiliary work equipment (
Pressure oil is constantly supplied to the auxiliary working machine (21), so that it is possible to carry out manual operations using the operating tool provided on the auxiliary working machine (21).

他方、第１の切換位置（３１）においては、機体側に備
えられた該切換弁（２９）の操作具（３３）を操作する
ことよって、第１の補助作業機（２１）を機体側から操
作できる。On the other hand, in the first switching position (31), the first auxiliary working machine (21) is switched from the machine side by operating the operating tool (33) of the switching valve (29) provided on the machine body side. Can be operated.

実施例 以下、この発明の構成を図示の実施例に基づいて説明す
ると、第３図及び第４図において（１）は、クローラ走
行装置（２）を備えた下部走行体であり、この下部走行
体（１）上に、上部旋回体（３）が水平方向に旋回自在
として取付けられている。（４）が、その上部旋回体フ
レームであり、この上部旋回体フレーム（４）上にエン
ジンを囲むボンネット（５）が取付けられ、更に、該ボ
ンネット（５）上に座席（６）が取付けられている。ま
た、ボンネット（５）の前方にはレバー取付台（７）が
取付けられ、主作業機操作レバー（８）や走行レバー（
９）等がこの取付台（７）から突出している。同じく上
部旋回体フレーム（４）の前端には、ブラケット（１０
）を介して、主作業機である掘削装置（１１）が取付け
られている。この掘削装置（１１）は、前記ブラケッ）
　（１０）へ枢着されるブーム（１２）　、該ブーム（
１２）先端へ枢着されるアーム（１３）　、該アーム（
１３）先端へ枢着されるパケット（１４）等から°なる
。また、（１５）は、ブーム（１２）を回動させるブー
ムシリンダ、（１６）は、アーム（１３）を回動させる
アームシリンダ、（１７）はパケット（１４）を回動さ
せるパケットシリンダを示している。Embodiment Below, the configuration of the present invention will be explained based on the illustrated embodiment. In FIGS. 3 and 4, (1) is an undercarriage body equipped with a crawler traveling device (2), and this undercarriage An upper rotating body (3) is mounted on the body (1) so as to be freely pivotable in the horizontal direction. (4) is the upper revolving body frame, a bonnet (5) surrounding the engine is attached to the upper revolving body frame (4), and a seat (6) is further attached to the bonnet (5). ing. In addition, a lever mount (7) is attached to the front of the bonnet (5), and the main work equipment control lever (8) and travel lever (
9) etc. protrude from this mounting base (7). Similarly, a bracket (10
) is attached to the excavating device (11), which is the main working machine. This drilling device (11) is equipped with the above-mentioned bracket.
(10), a boom (12) pivoted to the boom (
12) An arm (13) pivotally attached to the tip, the arm (
13) Consists of a packet (14) etc. that is pivotally attached to the tip. Further, (15) indicates a boom cylinder that rotates the boom (12), (16) indicates an arm cylinder that rotates the arm (13), and (17) indicates a packet cylinder that rotates the packet (14). ing.

このように主作業機たる掘削装置（１１）を備えた建設
機械において、アーム（１３）先端のパケット（１４）
を取外し、このパケット（１４）に代えて第１の作業機
である第１油圧ブレーカ（１８）を取付ける。また、こ
の第１油圧ブレーカ（１８）はバケッ１ヘシリンダ（１
７）に連結されて、該パケットシリンダ（１７）によっ
てアーム（１３）に対し回動できるようになっている。In this construction machine equipped with the excavator (11) as the main working machine, the packet (14) at the tip of the arm (13)
The packet (14) is replaced with a first hydraulic breaker (18), which is a first working machine. Moreover, this first hydraulic breaker (18) is connected to the bucket 1 and the cylinder (1
7) so that it can rotate relative to the arm (13) by means of the packet cylinder (17).

そして、該第１油圧ブレーカ（１８）の油圧配管（１９
）をブーム（１２）に沿って上部旋回体（３）側に延長
するとともに、該上部旋回体（３）に装備されている補
助作業機用配管接続部（２０）へ接続し、これによって
、上部旋回体（３）側から圧油を供給する。Then, the hydraulic piping (19) of the first hydraulic breaker (18)
) is extended along the boom (12) toward the upper revolving structure (3) and connected to the auxiliary work equipment piping connection part (20) installed on the upper revolving structure (3), thereby, Pressure oil is supplied from the upper revolving structure (3) side.

他方、このような第１油圧ブレーカ（１８）に代えて、
機体側即ち掘削装置（１１）側へ取付けないで機体から
離れた位置で作業を行なう場合には、第２油圧ブレーカ
（２１）の配管（２２）を前記配管接続部（２０）へ接
続して使用する。On the other hand, instead of such a first hydraulic breaker (18),
When working at a location away from the fuselage without attaching it to the fuselage side, that is, the excavation equipment (11) side, connect the pipe (22) of the second hydraulic breaker (21) to the pipe connection part (20). use.

次に、上記補助作業機部ち第１油圧ブレーカ（１８）及
び第２油圧ブレーカ（２１）へ圧油を供給するための回
路を説明する。第１図において、（２３）　　（２４）
は、エンジン（２５）によって駆動される第１・第２油
圧ポンプであり、この第１・第２油圧ポンプ（２３）　
　（２４）の吐出側には、各々走行装置（２）や掘削装
置（１１）の各油圧シリンダ等へ圧油を供給する第１・
第２油圧切換弁（２６）　　（２７）が設けられている
。更に、これら各油圧切換弁（２６）　　（２７）から
の圧油は合流油路（２８）側へ供給される。この合流油
路（２８）の途中には、補助作業機用油圧切換弁（２９
）が配置されている。！！補助作業機用油圧切換弁（２
９）は、合流油路（２８）を　□タンク側へ連通する中
立位置（３０）の他に、前記第１油圧ブレーカ（１８）
へ圧油を供給する第１の切換位置（３１）と、第２油圧
ブレーカ（２１）へ圧油を供給する第２の切換位置（３
２）とを有している。Next, a circuit for supplying pressure oil to the auxiliary working machine section, the first hydraulic breaker (18) and the second hydraulic breaker (21) will be explained. In Figure 1, (23) (24)
are the first and second hydraulic pumps driven by the engine (25), and the first and second hydraulic pumps (23)
On the discharge side of (24), there are first and second cylinders that supply pressure oil to each hydraulic cylinder of the traveling device (2) and the drilling device (11), respectively.
Second hydraulic switching valves (26) (27) are provided. Furthermore, the pressure oil from each of these hydraulic switching valves (26) (27) is supplied to the merging oil path (28) side. In the middle of this merging oil path (28), there is a hydraulic switching valve (29) for auxiliary work equipment.
) are placed. ! ! Hydraulic switching valve for auxiliary work equipment (2
9) is the neutral position (30) that communicates the merging oil passage (28) to the tank side, as well as the first hydraulic breaker (18).
A first switching position (31) that supplies pressure oil to the hydraulic breaker (21) and a second switching position (3
2).

（３３）が、この補助作業機用油圧切換弁（２９）を切
換える操作具としての操作ペダルであり、この操作ペダ
ル（３３）は、第４図で示すように、上部旋回体（３）
において、座席（６）前部側のオペレータの足元へ突出
しており、更に、この操作ペダル（３３）から、前記油
圧切換弁（２９）のスプール（３４）へリンク（３５）
を介して連結されている。即ち、この補助作業機用油圧
切換弁（２９）は、上部旋回体（３）に搭乗した状態で
、操作ペダル（３３）の操作によって各切換位置（３０
）　　（３１）　　（３２）へ切換え操作される。(33) is an operating pedal as an operating tool for switching the hydraulic switching valve (29) for this auxiliary working machine, and this operating pedal (33) is connected to the upper revolving structure (3) as shown in FIG.
, protrudes toward the operator's feet on the front side of the seat (6), and is further linked (35) from this operation pedal (33) to the spool (34) of the hydraulic switching valve (29).
are connected via. That is, the hydraulic switching valve (29) for auxiliary work equipment can be switched to each switching position (30) by operating the operating pedal (33) while riding on the upper revolving structure (3).
) (31) The switching operation is performed to (32).

この場合、該補助作業機用油圧切換弁（２９）は、操作
ペダル（３３）を踏み込むと第１の切換位置（３１）側
へ切換ねるようになっており、その際、該ペダル（３３
）を離すと、第１図のバネ（３６）によって中立位置へ
復帰するようになっている。他方、中立位置（３０）及
び第２の切換位置（３２）においては、スプール（３４
）の溝（３７）　　（３７）を利用した公知の保持機構
が設けられており、従って、操作ペダル（３３）を前記
と反対側即ち第２図の上方へ切換えると、この保持機構
によって第２の切換位置（３２）に保持される。In this case, the auxiliary work machine hydraulic switching valve (29) is configured to switch to the first switching position (31) when the operating pedal (33) is depressed;
) is released, the spring (36) shown in FIG. 1 returns it to the neutral position. On the other hand, in the neutral position (30) and the second switching position (32), the spool (34
) is provided with a known holding mechanism that utilizes the groove (37) (37). Therefore, when the operating pedal (33) is switched to the opposite side, that is, upward in FIG. is held at the switching position (32).

それ故、第２油圧ブレーカ（２１）を使用する場合には
、操作ペダル（３３）を押し上げれば、補助作業機用油
圧切換弁（２９）が第２の切換位置（３２）へ切換わっ
て、第２油圧ブレーカ（２１）側へ圧油を供給する状態
で復帰することなく保持されるから、これによって、該
第２油圧ブレーカ（２１）に備わっている操作具を用い
て手元操作を行なうことができる。なお、第２図におい
て、図のＡ位置が中立位置、Ｂ位置が第１の切換位置、
Ｃ位置が第２の切換位置を示している。また、保持機構
はペダル（３３）を直接保持するように設けてもよい。Therefore, when using the second hydraulic breaker (21), pushing up the operating pedal (33) will switch the auxiliary work equipment hydraulic switching valve (29) to the second switching position (32). , the second hydraulic breaker (21) is maintained in a state in which pressure oil is supplied to the side without returning, so that the second hydraulic breaker (21) can be operated at hand using the operating tool provided with the second hydraulic breaker (21). be able to. In addition, in FIG. 2, the A position in the figure is the neutral position, the B position is the first switching position,
Position C indicates the second switching position. Further, the holding mechanism may be provided to directly hold the pedal (33).

発明の効果 従って、この発明によれば、補助作業機を機体側に装着
した場合には、同じく機体側に備わっている操作具によ
って該補助作業機への圧油を切換え操作でき、他方、機
体から離れて補助作業機を使用する場合には、前記機体
側の操作具を第２の切換位置側へ切換えれば、補助作業
機用油圧切換弁はその第２の切換位置に切換ねった状態
に保持されるため、機体側から操作することなく補助作
業機の手元で操作でき、能率良く作業を行なうことがで
きるという効果がある。Effects of the Invention Therefore, according to the present invention, when the auxiliary work machine is mounted on the machine body, the pressure oil to the auxiliary work machine can be switched and operated by the operating tool also provided on the machine body, and on the other hand, When using the auxiliary work equipment away from the machine, by switching the operating tool on the machine body side to the second switching position, the hydraulic switching valve for the auxiliary work equipment remains in the state where it is not switched to the second switching position. Since it is held in place, it can be operated from the auxiliary work machine's hand without having to operate it from the machine body, and the work can be carried out efficiently.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明実施例を示す補助作業機への油圧回路図
、第２図は補助作業機用油圧切換弁と操作ペダルとの連
結構造を示す概略側面図、第３図は掘削機の全体側面図
、第４図は同じく正面図を示しているが、この第４図で
は掘削装置を省略している。 （３）・・・上部旋回体、（１８）・・・第１の作業機
、（２１）・・・第２の作業機、（２９）・・・補助作
業機用油圧切換弁、（３１）・・・第１の切換え位置、
（３２）・・・第２の切換位置、（３３）・・・操作ペ
ダル、（３７）・・・保持機構用の溝。 特許　出願人　ヤンマーディーゼル株式会社代理人弁理
士　樽　　　本　　　久　　　幸第４図Fig. 1 is a hydraulic circuit diagram for an auxiliary working machine showing an embodiment of the present invention, Fig. 2 is a schematic side view showing the connection structure between the hydraulic switching valve for the auxiliary working machine and the operation pedal, and Fig. 3 is a diagram of an excavator. The overall side view, FIG. 4, also shows a front view, but the excavation equipment is omitted in this FIG. (3) Upper revolving structure, (18) First working machine, (21) Second working machine, (29) Hydraulic switching valve for auxiliary working machine, (31 )...first switching position,
(32)...Second switching position, (33)...Operation pedal, (37)...Groove for holding mechanism. Patent Applicant: Yanmar Diesel Co., Ltd. Representative Patent Attorney Hisashi Tarumoto Figure 4

Claims (1)

【特許請求の範囲】[Claims] 機体側へ装着した状態で使用される第１の作業機と、機
体側より離れた位置で使用され、かつ、それ自体油圧の
切換え操作具を備えた第２の作業機とを選択的に接続使
用される油圧装置において、前記第１の作業機へ圧油を
供給する第１の切換え位置と、第２の作業機へ圧油を供
給する第２の切換え位置を備えた切換弁を設け、かつ、
この切換弁の切換え操作具が機体側に装備されていると
ともに、該切換弁を前記第２の切換位置に切換えた状態
で保持する保持機構を、該切換弁若しくは前記操作具に
設けられていることを特徴とする建設機械の作業機用油
圧切換え装置。Selectively connects a first working machine that is used while attached to the machine body and a second working machine that is used at a position remote from the machine body and is itself equipped with a hydraulic switching operation tool. The hydraulic system used includes a switching valve having a first switching position for supplying pressure oil to the first working machine and a second switching position for supplying pressure oil to the second working machine, and,
A switching tool for the switching valve is installed on the aircraft body, and a holding mechanism for holding the switching valve in the second switching position is provided on the switching valve or the operating tool. A hydraulic switching device for a working machine of a construction machine, characterized by:
JP5667985A 1985-03-20 1985-03-20 Oil pressure switcher for operating machine of construction machine Pending JPS61216939A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5667985A JPS61216939A (en) 1985-03-20 1985-03-20 Oil pressure switcher for operating machine of construction machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5667985A JPS61216939A (en) 1985-03-20 1985-03-20 Oil pressure switcher for operating machine of construction machine

Publications (1)

Publication Number Publication Date
JPS61216939A true JPS61216939A (en) 1986-09-26

Family

ID=13034111

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5667985A Pending JPS61216939A (en) 1985-03-20 1985-03-20 Oil pressure switcher for operating machine of construction machine

Country Status (1)

Country Link
JP (1) JPS61216939A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015045161A1 (en) * 2013-09-30 2015-04-02 株式会社泉精器製作所 Power unit and electric tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015045161A1 (en) * 2013-09-30 2015-04-02 株式会社泉精器製作所 Power unit and electric tool

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