JPH09111810A - Compaction/breaker working machine - Google Patents

Compaction/breaker working machine

Info

Publication number
JPH09111810A
JPH09111810A JP7265320A JP26532095A JPH09111810A JP H09111810 A JPH09111810 A JP H09111810A JP 7265320 A JP7265320 A JP 7265320A JP 26532095 A JP26532095 A JP 26532095A JP H09111810 A JPH09111810 A JP H09111810A
Authority
JP
Japan
Prior art keywords
valve
floating
boom
pressure
signal
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
JP7265320A
Other languages
Japanese (ja)
Inventor
Shigeru Shinohara
茂 篠原
Takayuki Muto
隆之 武藤
Tadao Karakama
忠雄 唐鎌
Mitsuru Arai
満 新井
Koichi Morita
紘一 森田
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP7265320A priority Critical patent/JPH09111810A/en
Priority to KR1019960044637A priority patent/KR970021536A/en
Priority to PCT/JP1996/002958 priority patent/WO1997013925A1/en
Priority to EP96933627A priority patent/EP0855468A4/en
Publication of JPH09111810A publication Critical patent/JPH09111810A/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/12—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor
    • E01C23/122—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus
    • E01C23/124—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus moved rectilinearly, e.g. road-breaker apparatus with reciprocating tools, with drop-hammers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/32—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom working downwardly and towards the machine, e.g. with backhoes
    • E02F3/325—Backhoes of the miniature type
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/963—Arrangements on backhoes for alternate use of different tools
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/966—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of hammer-type tools
    • 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
    • E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
    • E02F9/2095—Control of electric, electro-mechanical or mechanical equipment not otherwise provided for, e.g. ventilators, electro-driven fans
    • 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
    • E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
    • E02F9/221—Arrangements for controlling the attitude of actuators, e.g. speed, floating function for generating actuator vibration
    • 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
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2267—Valves or distributors
    • 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
    • E02F9/2296—Systems with a variable displacement pump
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/32—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom working downwardly and towards the machine, e.g. with backhoes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Shovels (AREA)
  • Operation Control Of Excavators (AREA)
  • Crushing And Grinding (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a working machine which allows both a breaker operation and a compaction operation. SOLUTION: A vibration generating device 12 is mounted on the arm 8 of a power shovel, a breaker chisel 15 and a compaction tool 16 can be replaceably attached to the main body 13 of the vibration generating device 12, and a floating valve 29 which makes a boom cylinder 7 floating is provided. The floating valve 29 is switched to its floating position by a rolling signal from a selector switch 37 and by a signal which has switched a service valve 22 that supplies pressure oil to the vibration generating device 12, so that a breaker operation can be performed with the breaker chisel 15 attached, and so that a compaction operation can be performed with the compaction tool 16 attached to make the boom cylinder 7 floating.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、パワーショベル等
を用いて転圧作業とブレーカ作業を行なう転圧・ブレー
カ作業機械に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compaction / breaker working machine for performing compaction work and breaker work using a power shovel or the like.

【０００２】[0002]

【従来の技術】パワーショベルを用いた転圧作業機械と
しては、パワーショベルのバケットシリンダを微往復動
してバケットを振動することで転圧するものが知られて
いる。また、パワーショベルを用いたブレーカ作業機械
としてはパワーショベルのアームに振動発生装置を装着
し、この振動発生装置によってブレーカチゼルを打撃し
てブレーカ作業するものが知られている。2. Description of the Related Art As a compaction working machine using a power shovel, there is known a compacting machine that compactively reciprocates a bucket cylinder of a power shovel to oscillate the bucket to compact the compact. Further, as a breaker working machine using a power shovel, there is known a machine in which a vibration generating device is attached to an arm of the power shovel and a breaker chisel is hit by the vibration generating device to perform a breaker work.

【０００３】[0003]

【発明が解決しようとする課題】前述のように転圧作業
機械とブレーカ作業機械は専用の作業機械となり、転圧
作業とブレーカ作業を行なうには２台の作業機械が必要
となってしまう。As described above, the compaction work machine and the breaker work machine are dedicated work machines, and two work machines are required to perform the compaction work and the breaker work.

【０００４】そこで本発明は前述の課題を解決できるよ
うにした転圧・ブレーカ作業機械を提供することを目的
とする。Therefore, an object of the present invention is to provide a rolling / breaker working machine capable of solving the above-mentioned problems.

【０００５】[0005]

【課題を解決するための手段・作用・効果】第１の発明
は、車体にブーム６をブームシリンダ７で上下揺動自在
に取付け、このブーム６にアーム８をアームシリンダ９
で上下揺動自在に取付け、このアーム８に振動発生装置
１２を取付け、この振動発生装置１２を、本体１３に圧
油が供給されることで往復動するピストン１４を設け、
この本体１３にブレーカチゼル１５と転圧具１６をピス
トン１４と対向して交換可能に取付けできるものとし、
転圧作業時にブームシリンダ７を浮状態とする浮切換手
段を設けたことを特徴とする転圧・ブレーカ作業機械で
ある。第１の発明によれば、ブレーカヂゼル１５によっ
てブレーカ作業できるし、転圧具１６で転圧作業でき、
しかも転圧作業時にはブームシリンダ７が浮状態となる
から効率良く転圧作業できる。第２の発明は、浮切換手
段を、振動発生装置１２に圧油を供給するサービス弁２
２が圧油供給位置であることを検出する第１の検出手段
と、ブレーカ信号と転圧信号を出力するセレクタスイッ
チ３７と、ブーム弁１９とブームシリンダ７を接続する
回路に設けた浮バルブ２９と、この浮バルブ２９を浮位
置とする浮用切換弁３９と、前記第１の検出手段の検出
信号と転圧信号によって浮用切換弁３９を切換えて浮バ
ルブ２９を浮位置とする手段より構成した転圧・ブレー
カ作業機械である。第２の発明によれば、サービス弁２
２を切換えると共に、セレクタスイッチ３７を操作した
時でないとブームシリンダ７が浮状態とならないので、
ブレーカ作業時にブームシリンダ７が浮状態となること
がない。第３の発明は、第２の発明における第１の検出
手段をサービス弁２２を受圧部２２ａとサービス用油圧
パイロット弁３３を接続するサービス弁用パイロット回
路３５の圧力を検出する圧力スイッチ３６とし、この圧
力スイッチ３６からの信号とセレクタスイッチ３７から
の転圧信号が入力された後に作動するタイマリレー３８
を設け、このタイマリレー３８が作動すると浮用切換弁
３９のソレノイド４０に通電し、その浮用切換弁３９を
浮バルブ２９の受圧部３０に圧油を供給する位置とする
転圧・ブレーカ作業機械である。第３の発明によれば、
電気的に制御できるから動作が確実となる。第４の発明
は、ブーム弁１９を切換えるブーム弁用油圧パイロット
弁３２のレバー３２ａに設けたスイッチ８０と、このブ
ーム用油圧パイロット弁３２からの出力圧力を検出する
シャトル弁８１と、そのシャトル弁８１の出力側に設け
た圧力スイッチ８２と、セレクタスイッチ３７と、ブー
ムシリンダ７とブーム弁１９との接続回路に設けた浮バ
ルブ２９と、この浮バルブ２９を浮位置とする信号を出
力する浮用切換弁３９と、前記スイッチ８０からの信号
とセレクタスイッチ３７からの転圧信号が入力され、か
つ前記圧力スイッチ８２から信号が入力されない時にの
み浮用切換弁３９に切換信号を出力する手段より構成し
た転圧・ブレーカ作業機械である。第４の発明によれ
ば、転圧作業時にブーム弁用油圧パイロット弁３２を操
作すると浮バルブ２９が浮位置以外と切換るから、ブー
ムシリンダ７を伸縮してブーム６を上下揺動できる。第
５の発明は、浮切換手段を、ブームシリンダ７に圧油を
供給するブーム弁１９を浮位置を有するものとし、この
ブーム弁１９を切換えるブーム弁用油圧パイロット弁３
２をデテント機構を有するものとした転圧・ブレーカ作
業機械である。第５の発明によれば、ブーム弁用油圧パ
イロット弁３２を操作するのみでブームシリンダ７を浮
状態にできる。第６の発明は、前記振動発生装置１２の
本体１３に作業具挿入孔７２をシリンダ孔４３と連続し
て形成し、この作業具挿入孔７２にフック７５を備えた
キャップ７４を着脱自在とした転圧・ブレーカ作業機械
である。第６の発明によれば、ブレーカ作業、転圧作業
しない時にキャップ７４でシリンダ孔４３内に異物が侵
入することを防止できるしフック７５によって吊り作業
できる。[Means, Actions, and Effects for Solving the Problems] The first invention is to mount a boom 6 on a vehicle body so as to be vertically swingable by a boom cylinder 7, and attach an arm 8 to the boom 6 with an arm cylinder 9
And a vibration generator 12 is attached to the arm 8. The vibration generator 12 is provided with a piston 14 that reciprocates when pressure oil is supplied to the main body 13.
A breaker chisel 15 and a roller compactor 16 may be attached to the body 13 so as to be opposed to the piston 14 and replaceable.
The rolling / breaker working machine is characterized in that a floating switching means for keeping the boom cylinder 7 in a floating state during rolling is provided. According to the first aspect of the present invention, breaker work can be performed by the breaker diesels 15, and rolling work can be performed by the compaction tool 16.
Moreover, since the boom cylinder 7 is in a floating state during the rolling operation, the rolling operation can be efficiently performed. A second aspect of the present invention is a service valve 2 for supplying pressure oil to the vibration generating device 12 by using the float switching means.
2 is a pressure oil supply position, first detection means, a selector switch 37 for outputting a breaker signal and a rolling signal, and a floating valve 29 provided in a circuit connecting the boom valve 19 and the boom cylinder 7. A floating switching valve 39 for moving the floating valve 29 to a floating position, and a means for switching the floating switching valve 39 to a floating position by switching the floating switching valve 39 in accordance with the detection signal and the compaction signal of the first detecting means. It is a rolling compactor / breaker work machine configured. According to the second invention, the service valve 2
The boom cylinder 7 does not float unless the selector switch 37 is operated while switching 2
Boom cylinder 7 does not float during breaker work. In the third invention, the first detecting means in the second invention is a pressure switch 36 for detecting the pressure of a service valve 22 which connects the service valve 22 to the pressure receiving portion 22a and the service hydraulic pilot valve 33. A timer relay 38 that operates after the signal from the pressure switch 36 and the rolling signal from the selector switch 37 are input.
When the timer relay 38 is operated, the solenoid 40 of the floating switching valve 39 is energized, and the floating switching valve 39 is positioned to supply pressure oil to the pressure receiving portion 30 of the floating valve 29. It is a machine. According to the third invention,
The operation is reliable because it can be electrically controlled. 4th invention, switch 80 provided in lever 32a of hydraulic pilot valve 32 for boom valves which switches boom valve 19, shuttle valve 81 which detects the output pressure from this hydraulic pilot valve 32 for booms, and its shuttle valve. The pressure switch 82 provided on the output side of 81, the selector switch 37, the floating valve 29 provided in the connection circuit between the boom cylinder 7 and the boom valve 19, and the floating valve 29 that outputs a signal for setting the floating valve 29 to the floating position. Switching valve 39, and means for outputting the switching signal to the floating switching valve 39 only when the signal from the switch 80 and the compaction signal from the selector switch 37 are input and no signal is input from the pressure switch 82. It is a rolling compactor / breaker work machine configured. According to the fourth aspect, when the boom valve hydraulic pilot valve 32 is operated during the rolling operation, the floating valve 29 is switched to a position other than the floating position, so that the boom cylinder 7 can be expanded and contracted to swing the boom 6 up and down. In a fifth aspect of the present invention, the floating switching means is such that the boom valve 19 for supplying pressure oil to the boom cylinder 7 has a floating position, and the boom valve hydraulic pilot valve 3 for switching the boom valve 19 is used.
2 is a compaction / breaker working machine having a detent mechanism. According to the fifth aspect, the boom cylinder 7 can be floated only by operating the boom valve hydraulic pilot valve 32. In a sixth aspect of the invention, a work implement insertion hole 72 is formed continuously with the cylinder hole 43 in the main body 13 of the vibration generator 12, and a cap 74 having a hook 75 is detachably attached to the work implement insertion hole 72. It is a compaction / breaker work machine. According to the sixth aspect of the invention, foreign matter can be prevented from entering the cylinder hole 43 by the cap 74 when the breaker work or the rolling work is not performed, and the hook 75 can be used for the hanging work.

【０００６】[0006]

【発明の実施の形態】図１に示すように、走行体１を備
えた下部車体２に上部車体３が旋回自在に設けられ、こ
の上部車体３には座席４と複数の操縦部材５が設けてあ
る。前記上部車体３にブーム６がブームシリンダ７で上
下揺動自在に取付けられ、このブーム６にアーム８がア
ームシリンダ９で上下揺動自在に取付けてあり、そのア
ーム８にバケット１０がバケットシリンダ１１で上下回
動自在に取付けられてパワーショベルを構成している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, an upper vehicle body 3 is rotatably provided on a lower vehicle body 2 having a traveling body 1, and a seat 4 and a plurality of control members 5 are provided on the upper vehicle body 3. There is. A boom 6 is attached to the upper vehicle body 3 so as to be vertically swingable by a boom cylinder 7, and an arm 8 is attached to the boom 6 so as to be vertically swingable, and a bucket 10 and a bucket cylinder 11 are attached to the arm 8. It is attached so that it can rotate up and down to form a power shovel.

【０００７】前記ブーム８内には振動発生装置１２が取
付けてあり、この振動発生装置１２は本体１３内にピス
トン１４を摺動自在に設け、圧油を供給することでピス
トン１４を往復動するようにし、その本体１３にブレー
カチゼル１５と転圧具１６を交換して装着できるように
してある。A vibration generator 12 is mounted in the boom 8, and the vibration generator 12 has a piston 14 slidably provided in a main body 13 and reciprocates the piston 14 by supplying pressure oil. Thus, the breaker chisel 15 and the roller compactor 16 can be exchangeably mounted on the main body 13.

【０００８】前記上部車体３に設けたエンジン１７で油
圧ポンプ１８を駆動し、この油圧ポンプ１８の吐出側は
ブーム弁１９、アーム弁２０、バケット弁２１、サービ
ス弁２２の入口ポートに接続し、ブーム弁１９の第１・
第２アクチュエータポート２３，２４は第１・第２回路
２５，２６でブームシリンダ７の伸び室７ａと縮み側７
ｂに接続している。前記サービス弁２２のアクチュエー
タポート２７は回路２８で振動発生装置１２に接続して
いる。The hydraulic pump 18 is driven by the engine 17 provided on the upper vehicle body 3, and the discharge side of the hydraulic pump 18 is connected to the inlet ports of the boom valve 19, the arm valve 20, the bucket valve 21 and the service valve 22, Boom valve 19 first
The second actuator ports 23 and 24 are connected to the first and second circuits 25 and 26 by the extension chamber 7a and the contraction side 7 of the boom cylinder 7.
b. The actuator port 27 of the service valve 22 is connected to the vibration generator 12 by a circuit 28.

【０００９】前記第１回路２５の途中と第２回路２６の
途中に浮バルブ２９が設けてあり、この浮バルブ２９は
スプリングで連通位置ａに保持され、受圧部３０に圧油
が供給されると浮位置ｂとなってブームシリンダ７の伸
び室７ａと縮み室７ｂをタンク３１に連通する。A floating valve 29 is provided in the middle of the first circuit 25 and in the middle of the second circuit 26. The floating valve 29 is held at a communication position a by a spring, and pressure oil is supplied to the pressure receiving portion 30. Then, the expansion chamber 7a and the contraction chamber 7b of the boom cylinder 7 communicate with the tank 31.

【００１０】前記上部車体３にはブーム弁用油圧パイロ
ット弁３２が設けてあり、このブーム弁用油圧パイロッ
ト弁３２のレバー３２ａを中立位置ｃから伸び位置ｄ、
縮み位置ｅに操作することでブーム弁１９の第１受圧部
１９ａと第２受圧部１９ｂに圧油を供給してブーム弁１
９を中立位置から伸び位置、縮み位置に切換える。The upper vehicle body 3 is provided with a boom valve hydraulic pilot valve 32. The lever 32a of the boom valve hydraulic pilot valve 32 is extended from the neutral position c to the extended position d.
By operating to the retracted position e, pressure oil is supplied to the first pressure receiving portion 19a and the second pressure receiving portion 19b of the boom valve 19 so that the boom valve 1
9 is switched from the neutral position to the extended position and the contracted position.

【００１１】前記上部車体３にはサービス弁用油圧パイ
ロット弁３３が設けられ、ペタル３４を踏むとサービス
弁用パイロット回路３５よりサービス弁２２の受圧部２
２ａに圧油が供給され、サービス弁２２はアクチュエー
タポート２７より圧油を出力する供給位置に切換えられ
る。前記サービス弁用パイロット回路３５には圧力スイ
ッチ３６が設けてある。The upper vehicle body 3 is provided with a service valve hydraulic pilot valve 33. When the petal 34 is stepped on, the service valve pilot circuit 35 causes a pressure receiving portion 2 of the service valve 22.
Pressure oil is supplied to 2a, and the service valve 22 is switched to a supply position where pressure oil is output from the actuator port 27. The service valve pilot circuit 35 is provided with a pressure switch 36.

【００１２】前記上部車体３、例えばブーム弁用油圧パ
イロット弁３２のレバー３２ａにはセレクタスイッチ３
７が設けられ、このセレクタスイッチ３７を転圧位置
ｆ、ブレーカ位置ｇに切換えることで転圧信号、ブレー
カ信号を出力する。The selector switch 3 is provided on the lever 32a of the upper vehicle body 3, for example, the boom pilot hydraulic pilot valve 32.
7, a selector switch 37 is switched between a rolling position f and a breaker position g to output a rolling signal and a breaker signal.

【００１３】前記圧力スイッチ３６からの圧力信号とセ
レクタスイッチ３７からの転圧信号はタイマリレー３８
に入力される。このタイマリレー３８は両方の信号が入
力されてから所定時間後に浮用切換弁３９のソレノイド
４０に通電する。A timer relay 38 outputs a pressure signal from the pressure switch 36 and a rolling signal from the selector switch 37.
Is input to The timer relay 38 energizes the solenoid 40 of the floating switching valve 39 after a predetermined time from the input of both signals.

【００１４】前記浮用切換弁３９は浮バルブ２９の受圧
部３０に接続した浮用パイロット回路４１に設けられ、
この浮用切換弁３９はスプリングでドレーン位置ｈに保
持してあり、ソレノイド４０に通電すると供給位置ｉに
切換える。The floating switching valve 39 is provided in a floating pilot circuit 41 connected to the pressure receiving portion 30 of the floating valve 29.
The floating switching valve 39 is held at the drain position h by a spring, and switches to the supply position i when the solenoid 40 is energized.

【００１５】次に振動発生装置１２の具体構造を説明す
る。図２に示すように、本体１３に大径シリンダ孔４１
と小径シリンダ孔４２より成るシリンダ孔４３を形成
し、そのシリンダ孔４３にピストン１４を嵌挿し、その
ピストン１４は大径部４５、大径ロッド部４６、中間径
ロッド部４７、小径ロッド部４８を備え、受圧面積の小
さな第１室４９と受圧面積の大きな第２室５０と補助室
５１を有するシリンダ部５２としてある。Next, a specific structure of the vibration generator 12 will be described. As shown in FIG. 2, the main body 13 has a large-diameter cylinder hole 41.
And a small diameter cylinder hole 42, a cylinder hole 43 is formed, and the piston 14 is inserted into the cylinder hole 43. The piston 14 has a large diameter portion 45, a large diameter rod portion 46, an intermediate diameter rod portion 47, and a small diameter rod portion 48. And a second chamber 50 having a large pressure receiving area, a second chamber 50 having a large pressure receiving area, and an auxiliary chamber 51.

【００１６】サーボ弁５３はポンプポート５４、主ポー
ト５５、タンクポート５６、補助ポート５７を有し、ピ
ストン１４の移動によって中立位置Ａ、第１位置Ｂ、第
２位置Ｃに切換えられ、ポンプポート５４がシリンダ部
５２の第１室４９に連通している。The servo valve 53 has a pump port 54, a main port 55, a tank port 56 and an auxiliary port 57, and is switched to a neutral position A, a first position B and a second position C by the movement of the piston 14, and the pump port 54 communicates with the first chamber 49 of the cylinder portion 52.

【００１７】主切換弁５８は第１・第２・第３・第４ポ
ート５９，６０，６１，６２を有し、第１受圧部６３の
圧力で第１の位置Ｄ、第２受圧部６４の圧力で第２の位
置Ｅとなり、第１ポート５９が図１に示す回路２８に連
通し、第２ポート６０がサーボ弁５３の補助ポート５７
に連通し、第３ポート６１がタンク３１に連通し、第４
ポート６２がシリンダ部５２の第２室５０に連通し、第
１受圧部６３がサーボ弁５３の主ポート５５に連通し、
第２受圧部６４が前記回路２８に連通し、その回路２８
はシリンダ部５２の第１室４９とサーボ弁５３のポンプ
ポート５４に連通している。The main switching valve 58 has first, second, third and fourth ports 59, 60, 61 and 62, and the pressure of the first pressure receiving portion 63 causes the first position D and the second pressure receiving portion 64. The second position E is reached by the pressure of, and the first port 59 is in communication with the circuit 28 shown in FIG. 1, and the second port 60 is the auxiliary port 57 of the servo valve 53.
And the third port 61 communicates with the tank 31,
The port 62 communicates with the second chamber 50 of the cylinder portion 52, the first pressure receiving portion 63 communicates with the main port 55 of the servo valve 53,
The second pressure receiving portion 64 communicates with the circuit 28, and the circuit 28
Communicates with the first chamber 49 of the cylinder portion 52 and the pump port 54 of the servo valve 53.

【００１８】前記シリンダ部５２の補助室５１は切換弁
７０でタンク３１と第２室５０に連通制御され、この切
換弁７０はばね力でドレーン位置Ｆとなり、受圧部７１
の圧油で連通位置Ｇとなるパイロット切換式となり、そ
の受圧部３１に浮用パイロット回路４１が接続してあ
る。この切換弁７０はメカデテント付きの手動切換式と
しても良い。The auxiliary chamber 51 of the cylinder portion 52 is controlled by the switching valve 70 so as to communicate with the tank 31 and the second chamber 50. The switching valve 70 is brought to the drain position F by the spring force, and the pressure receiving portion 71.
With the pressure oil, the pilot switching type is used in which the communication position G is reached, and the floating pilot circuit 41 is connected to the pressure receiving portion 31. The switching valve 70 may be a manual switching type with a mechanical detent.

【００１９】次に振動発生装置の基本動作を説明する。
図示の状態はピストン１４が中間位置であり、サーボ弁
５３が中立位置Ａとなって第１受圧部６３と第２受圧部
６４にポンプ吐出圧が供給され、第１受圧部６３と第２
受圧部６４の受圧面積は第１受圧部６３の方が大きいの
で、主切換弁５８は第１位置Ｄとなり、第２室５０がタ
ンク３１に連通しているので、ピストン１４は第１室４
９内の圧油で右方に移動する。Next, the basic operation of the vibration generator will be described.
In the illustrated state, the piston 14 is at the intermediate position, the servo valve 53 is at the neutral position A, the pump discharge pressure is supplied to the first pressure receiving portion 63 and the second pressure receiving portion 64, and the first pressure receiving portion 63 and the second pressure receiving portion 63 are connected.
Since the pressure receiving area of the pressure receiving portion 64 is larger in the first pressure receiving portion 63, the main switching valve 58 is in the first position D, and the second chamber 50 communicates with the tank 31, so that the piston 14 is in the first chamber 4
Move to the right with the pressure oil inside 9.

【００２０】ピストン１４が右方ストロークエンドとな
るとサーボ弁５３が第２位置Ｃとなり、主ポート５５が
タンクポート５６に連通し、ポンプポート５４、補助ポ
ート５７は遮断するので主切換弁５８の第１受圧部６３
の圧油がタンク３１に流出するので、主切換弁５８が第
２受圧部６４の圧力で第２位置Ｅとなり、第１ポート５
９と第４ポート６２が連通し、第２ポート６０と第３ポ
ート６１が連通する。When the piston 14 reaches the right stroke end, the servo valve 53 reaches the second position C, the main port 55 communicates with the tank port 56, and the pump port 54 and the auxiliary port 57 are shut off. 1 pressure receiving part 63
Since the pressure oil of No. 2 flows out to the tank 31, the main switching valve 58 is set to the second position E by the pressure of the second pressure receiving portion 64, and the first port 5
9 and the 4th port 62 are open for free passage, and the 2nd port 60 and the 3rd port 61 are open for free passage.

【００２１】これにより、シリンダ部５２の第２室５０
に圧油が供給されて第１室４９と第２室５０の面積差に
よってピストン１４が左方に移動し、左方のストローク
エンドとなるとサーボ弁５３が第１位置Ｂとなってポン
プポート５４と主ポート５５が連通し、タンクポート５
６、補助ポート５７が遮断される。As a result, the second chamber 50 of the cylinder portion 52 is
When pressure oil is supplied to the piston 14, the piston 14 moves leftward due to the area difference between the first chamber 49 and the second chamber 50, and when the left stroke end is reached, the servo valve 53 becomes the first position B and the pump port 54. And the main port 55 communicate with each other, and the tank port 5
6. The auxiliary port 57 is shut off.

【００２２】これにより、圧油が主切換弁５８の第１受
圧部６３に供給されて主切換弁５８が第１位置Ｄとな
り、前述のようにピストン１４が右方に移動する。As a result, the pressure oil is supplied to the first pressure receiving portion 63 of the main switching valve 58 to bring the main switching valve 58 to the first position D, and the piston 14 moves to the right as described above.

【００２３】以上の動作を繰り返してピストン１４が往
復移動する。The piston 14 reciprocates by repeating the above operation.

【００２４】次にピストン４の往復動速度と移動力を変
更する動作を説明する。切換弁７０をドレーン位置Ｆと
すれば、第２室５０と補助室５１が遮断し、補助室５１
がタンク３１に連通するので、ピストン１４を左方に移
動する室の受圧面積は第２室５０の受圧面積（Ａ1 −Ａ
2 ）となる。ただし、Ａ1 は大径部４５の断面積、Ａ2
は中間径ロッド部４７の断面積である。Next, the operation of changing the reciprocating speed and the moving force of the piston 4 will be described. When the switching valve 70 is set to the drain position F, the second chamber 50 and the auxiliary chamber 51 are shut off and the auxiliary chamber 51 is closed.
Is communicated with the tank 31, the pressure receiving area of the chamber that moves the piston 14 to the left is equal to the pressure receiving area of the second chamber 50 (A 1 -A
2 ) However, A 1 is the cross-sectional area of the large diameter portion 45, A 2
Is the cross-sectional area of the intermediate diameter rod portion 47.

【００２５】切換弁７０の受圧部７１に圧油を供給する
と切換弁７０は連通位置Ｇとなり、第２室５０と補助室
５１が連通するので、ピストン１４を左方に移動する室
の受圧面積は第２室５０の受圧面積（Ａ1 −Ａ2 ）＋補
助室５１の受圧面積（Ａ2 −Ａ3 ）となる。ただし、Ａ
3 は小径ロッド部８の断面積である。When pressure oil is supplied to the pressure receiving portion 71 of the switching valve 70, the switching valve 70 becomes the communication position G, and the second chamber 50 and the auxiliary chamber 51 communicate with each other, so that the pressure receiving area of the chamber for moving the piston 14 to the left. Is the pressure receiving area of the second chamber 50 (A 1 −A 2 ) + the pressure receiving area of the auxiliary chamber 51 (A 2 −A 3 ). However, A
3 is a cross-sectional area of the small diameter rod portion 8.

【００２６】このように、切換弁７０をドレーン位置Ｆ
とすればピストン１４を左方に移動する室の受圧面積が
小さくなり、ピストン４の往復動速度が速く、ブレーカ
として用いる場合に好適となる。In this way, the switching valve 70 is set to the drain position F.
If so, the pressure receiving area of the chamber that moves the piston 14 to the left becomes small, the reciprocating speed of the piston 4 is fast, and it is suitable for use as a breaker.

【００２７】また、切換弁７０を連通位置Ｇとすればピ
ストン１４を左方に移動する室の受圧面積が大きくな
り、ピストン１４の移動力が大きく、転圧機として用い
る場合に好適となる。Further, if the switching valve 70 is set to the communication position G, the pressure receiving area of the chamber for moving the piston 14 to the left becomes large, and the moving force of the piston 14 is large, which is suitable for use as a compactor.

【００２８】前記振動発生装置１２の本体１３には図３
に示すように作業具挿入孔７２がシリンダ孔４３と連続
して形成してあり、この作業具挿入孔７２にブレーカチ
ゼル、転圧具を挿入してピン７３で保持するようにして
ある。前記作業具挿入孔７３にはキャップ７４が着脱自
在に設けてあり、このキャップ７４は前記ピン７３で保
持されると共に、フック７５を有している。The body 13 of the vibration generator 12 is shown in FIG.
As shown in FIG. 3, a working tool insertion hole 72 is formed continuously with the cylinder hole 43, and a breaker chisel and a rolling member are inserted into the working tool insertion hole 72 and held by the pin 73. A cap 74 is detachably provided in the work implement insertion hole 73, and the cap 74 is held by the pin 73 and has a hook 75.

【００２９】このようであるから、ブレーカ作業、転圧
作業しない時にはキャップ７４を取付けてシリンダ孔４
３内に異物が侵入しないようにし、そのキャップ７４に
設けたフック７５で吊り作業できる。Because of this, when the breaker work or the rolling work is not performed, the cap 74 is attached and the cylinder hole 4
It is possible to prevent foreign matter from entering the inside of the housing 3 and to suspend it with the hook 75 provided on the cap 74.

【００３０】次に作動を説明する。 （ブレーカ作業）振動発生装置１２の本体１３にブレー
カチゼル１５を装着し、セレクタスイッチ３７をブレー
カ位置ｇとする。ペダル３４を踏んでサービス弁用油圧
パイロット弁３３を作動し、サービス弁用パイロット回
路３５に圧油を出力する。これによってサービス弁２２
の受圧部２２ａに圧油が供給されて供給位置となり、油
圧ポンプ１８の吐出圧油が振動発生装置１２の本体１３
内に供給されてピストン１４が往復動し、ブレーカチゼ
ル１５を打撃してブレーカ作業する。Next, the operation will be described. (Breaker work) The breaker chisel 15 is attached to the main body 13 of the vibration generator 12, and the selector switch 37 is set to the breaker position g. The pedal 34 is depressed to operate the service valve hydraulic pilot valve 33 to output pressure oil to the service valve pilot circuit 35. This allows the service valve 22
The pressure oil is supplied to the pressure receiving portion 22a of the vibration pump 12 to reach the supply position, and the pressure oil discharged from the hydraulic pump 18 is transferred to the main body 13 of the vibration generator 12.
The piston 14 reciprocates as it is supplied inside, and strikes the breaker chisel 15 to perform the breaker work.

【００３１】この時、圧力スイッチ３６が圧力信号を出
力するがセレクタスイッチ３７から転圧信号が入力され
ないので、タイマリレー３８は作動しない。これによっ
て浮用切換弁３９がドレーン位置ｈとなって浮用パイロ
ット回路４１に圧油が供給されないので、図２に示す切
換弁７０がドレーン位置Ｆとなり、前述のようにピスト
ン１４の往復動速度が速くなる。At this time, the pressure switch 36 outputs a pressure signal, but since the compaction signal is not input from the selector switch 37, the timer relay 38 does not operate. As a result, the floating switching valve 39 is in the drain position h, and pressure oil is not supplied to the floating pilot circuit 41. Therefore, the switching valve 70 shown in FIG. 2 is in the drain position F, and the reciprocating speed of the piston 14 as described above. Will be faster.

【００３２】また、前述のブレーカ作業時にブーム弁用
油圧パイロット弁３２のレバー３２ａを操作することで
ブームシリンダ７が伸び作動、縮み作動してブーム６が
上下揺動する。Further, by operating the lever 32a of the boom valve hydraulic pilot valve 32 during the above-mentioned breaker work, the boom cylinder 7 is extended and contracted to swing the boom 6 up and down.

【００３３】（転圧作業）振動発生装置１２の本体１３
に転圧具１６を装着し、セレクタスイッチ３７を転圧位
置ｆとする。この状態でペダル３４を踏むと前述と同様
にサービス弁２２が供給位置となって振動発生装置１２
のピストン１４が往復動して転圧具１６によって転圧作
業する。(Rolling work) Main body 13 of vibration generator 12
The compaction tool 16 is attached to the selector switch 37 and the selector switch 37 is set to the compaction position f. When the pedal 34 is depressed in this state, the service valve 22 is at the supply position as in the above, and the vibration generator 12
The piston 14 reciprocates to perform a rolling operation by the rolling tool 16.

【００３４】この時、圧力スイッチ３６からの圧力信号
とセレクタスイッチ３７からの転圧信号がタイマリレー
３８に入力され、所定時間後に浮用切換弁３９のソレノ
イド４０に通電されて供給位置ｉとなる。At this time, the pressure signal from the pressure switch 36 and the rolling signal from the selector switch 37 are input to the timer relay 38, and after a predetermined time, the solenoid 40 of the floating switching valve 39 is energized to the supply position i. .

【００３５】これによって、浮バルブ２９の受圧部３０
に圧油が供給されてドレーン位置ｂとなり、ブームシリ
ンダ７の伸び室７ａと縮み室７ｂがタンク３１に連通し
てブームシリンダ７は外力により自由に伸縮する状態、
つまり浮状態となる。As a result, the pressure receiving portion 30 of the floating valve 29 is
A state in which pressure oil is supplied to the drain position b, the extension chamber 7a and the contraction chamber 7b of the boom cylinder 7 communicate with the tank 31, and the boom cylinder 7 freely expands and contracts by an external force.
In other words, it is in a floating state.

【００３６】ブームシリンダ７が浮状態となるとブーム
６が外力によって上下揺動するから効率良く転圧作業で
きる。When the boom cylinder 7 is in a floating state, the boom 6 swings up and down by an external force, so that the compacting work can be efficiently performed.

【００３７】また、浮用パイロット回路４１に圧油が供
給されると図２の切換弁７０が供給位置Ｇとなるので、
ピストン１４の移動力が大きくなって転圧効果が大とな
る。When pressure oil is supplied to the floating pilot circuit 41, the switching valve 70 shown in FIG.
The moving force of the piston 14 is increased and the rolling effect is increased.

【００３８】次に第２実施例を説明する。図４に示すよ
うに、ブーム用油圧パイロット弁３２のレバー３２ａに
スイッチ８０を取付け、ブーム弁１９の第１，第２受圧
部１９ａ，１９ｂに作用する圧油を検出するシャトル弁
８１を設け、このシャトル弁８１の出力側に圧力スイッ
チ８２を設ける。Next, a second embodiment will be described. As shown in FIG. 4, a switch 80 is attached to the lever 32a of the boom hydraulic pilot valve 32, and a shuttle valve 81 for detecting pressure oil acting on the first and second pressure receiving portions 19a and 19b of the boom valve 19 is provided. A pressure switch 82 is provided on the output side of the shuttle valve 81.

【００３９】前記スイッチ８０のＯＮ信号、圧力スイッ
チ８２の圧力信号はタイマリレー３８に入力され、この
タイマリレー３８はスイッチ８０のＯＮ信号とセレクタ
スイッチ３７からの転圧信号が入力され、かつ圧力スイ
ッチ８２の圧力信号が入力されない時にのみ浮用切換弁
３９のソレノイド４０に通電する。The ON signal of the switch 80 and the pressure signal of the pressure switch 82 are input to the timer relay 38. The timer relay 38 receives the ON signal of the switch 80 and the rolling signal from the selector switch 37, and the pressure switch. The solenoid 40 of the floating switching valve 39 is energized only when the pressure signal 82 is not input.

【００４０】このように構成すれば、転圧作業時にブー
ム用油圧パイロット弁３２のレバー３２ａを操作してブ
ーム弁１９を作動すると、圧力スイッチ８２が圧力信号
を出力するのでタイマリレー３８がソレノイド４０に通
電しなくなり、浮用切換弁３９がドレーン位置ｈとなる
から浮バルブ２９が連通位置ａとなる。According to this structure, when the boom valve 19 is operated by operating the lever 32a of the boom hydraulic pilot valve 32 during the rolling operation, the pressure switch 82 outputs a pressure signal. Is not energized, and the floating switching valve 39 is at the drain position h, so the floating valve 29 is at the communication position a.

【００４１】したがって、ブームシリンダ７を浮状態と
して転圧作業している時にブームシリンダ７を伸縮すべ
くブーム用油圧パイロット弁３２を操作すると浮状態が
解除され、ブームシリンダ７を伸縮してブーム６を上下
に揺動できるし、そのブームシリンダ７を停止すると自
動的に浮状態に復帰する。Therefore, when the boom hydraulic pilot valve 32 is operated to expand / contract the boom cylinder 7 during the rolling operation with the boom cylinder 7 in the floating state, the floating state is released, and the boom cylinder 7 is expanded / contracted to extend the boom 6. Can be rocked up and down, and when the boom cylinder 7 is stopped, it automatically returns to the floating state.

【００４２】次に第３実施例を説明する。図５に示すよ
うに、ブーム弁１９を浮位置Ｘを有するものとし、ブー
ム用油圧パイロット弁３２をデテント機構を備えたもの
とする。Next, a third embodiment will be described. As shown in FIG. 5, the boom valve 19 has a floating position X, and the boom hydraulic pilot valve 32 has a detent mechanism.

【００４３】このようにすれば、ブーム用油圧パイロッ
ト弁３２のレバー３２ａをフルストローク操作してブー
ム弁１９の第２受圧部１９ｂに圧油を供給するとブーム
弁１９が浮位置Ｘとなり、レバー３２ａはフルストロー
ク操作した状態に保持されるので、ブームシリンダ７を
浮状態として転圧作業できる。With this configuration, when the lever 32a of the boom hydraulic pilot valve 32 is fully stroked to supply the pressure oil to the second pressure receiving portion 19b of the boom valve 19, the boom valve 19 is brought to the floating position X and the lever 32a. Is held in the state of full stroke operation, so that the boom cylinder 7 can be floated to perform the rolling operation.

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

【図１】本発明の第１実施例を示す構成説明図である。FIG. 1 is a configuration explanatory view showing a first embodiment of the present invention.

【図２】振動発生装置の具体構造の説明図である。FIG. 2 is an explanatory diagram of a specific structure of a vibration generator.

【図３】振動発生装置の本体一部分の拡大断面図であ
る。FIG. 3 is an enlarged cross-sectional view of a part of the main body of the vibration generator.

【図４】本発明の第２実施例を示す構成説明図である。FIG. 4 is a structural explanatory view showing a second embodiment of the present invention.

【図５】本発明の第３実施例を示す構成説明図である。FIG. 5 is a structural explanatory view showing a third embodiment of the present invention.

【符号の説明】[Explanation of symbols]

３…上部車体 ６…ブーム ７…ブームシリンダ ８…アーム ９…アームシリンダ １０…バケット １１…バケットシリンダ １２…振動発生装置 １３…本体 １４…ピストン １５…ブレーカチゼル １６…転圧具 １８…油圧ポンプ １９…ブーム弁 １９ａ…第１受圧部 １９ｂ…第２受圧部 ２２…サービス弁 ２９…浮バルブ ３０…受圧部 ３２…ブーム弁用油圧パイロット弁 ３２ａ…レバー ３３…サービス弁用油圧パイロット弁 ３４…ペダル ３６…圧力スイッチ ３７…セレクタスイッチ ３８…タイマリレー ３９…浮用切換弁 ４０…ソレノイド ４９…第１室 ５０…第２室 ５１…補助室 ５３…サーボ弁 ５８…主切換弁 ７０…切換弁 ７１…受圧部 ８０…スイッチ ８１…シャトル弁 ８２…圧力スイッチ。 3 ... Upper vehicle body 6 ... Boom 7 ... Boom cylinder 8 ... Arm 9 ... Arm cylinder 10 ... Bucket 11 ... Bucket cylinder 12 ... Vibration generator 13 ... Main body 14 ... Piston 15 ... Breaker chisel 16 ... Rolling tool 18 ... Hydraulic pump 19 ... Boom valve 19a ... First pressure receiving portion 19b ... Second pressure receiving portion 22 ... Service valve 29 ... Floating valve 30 ... Pressure receiving portion 32 ... Boom valve hydraulic pilot valve 32a ... Lever 33 ... Service valve hydraulic pilot valve 34 ... Pedal 36 ... Pressure switch 37 ... Selector switch 38 ... Timer relay 39 ... Floating switching valve 40 ... Solenoid 49 ... First chamber 50 ... Second chamber 51 ... Auxiliary chamber 53 ... Servo valve 58 ... Main switching valve 70 ... Switching valve 71 ... Pressure receiving Part 80 ... Switch 81 ... Shuttle valve 82 ... Pressure switch.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 新井 満 栃木県小山市横倉新田400 株式会社小松 製作所小山工場内 (72)発明者 森田 紘一 栃木県小山市横倉新田400 株式会社小松 製作所小山工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Mitsuru Arai 400 Yokokura Nitta 400, Oyama City, Tochigi Prefecture Komatsu Plant Oyama Plant (72) Inventor Koichi Morita Yokokura Nitta 400, Oyama City, Tochigi Prefecture Komatsu Plant Oyama Plant Co., Ltd. Within

Claims (6)

【特許請求の範囲】[Claims] 【請求項１】 車体にブーム６をブームシリンダ７で上
下揺動自在に取付け、このブーム６にアーム８をアーム
シリンダ９で上下揺動自在に取付け、このアーム８に振
動発生装置１２を取付け、 この振動発生装置１２を、本体１３に圧油が供給される
ことで往復動するピストン１４を設け、この本体１３に
ブレーカチゼル１５と転圧具１６をピストン１４と対向
して交換可能に取付けできるものとし、 転圧作業時にブームシリンダ７を浮状態とする浮切換手
段を設けたことを特徴とする転圧・ブレーカ作業機械。1. A boom 6 is swingably mounted on a vehicle body by a boom cylinder 7, an arm 8 is swingably mounted on the boom 6 by an arm cylinder 9, and a vibration generator 12 is mounted on the arm 8. The vibration generator 12 is provided with a piston 14 that reciprocates when pressure oil is supplied to a main body 13, and a breaker chisel 15 and a pressure roller 16 can be attached to the main body 13 so as to be opposed to the piston 14 and can be exchanged. The rolling / breaker working machine is characterized in that it is provided with a floating switching means for keeping the boom cylinder 7 in a floating state during rolling work. 【請求項２】 前記浮切換手段を、振動発生装置１２に
圧油を供給するサービス弁２２が圧油供給位置であるこ
とを検出する第１の検出手段と、ブレーカ信号と転圧信
号を出力するセレクタスイッチ３７と、ブーム弁１９と
ブームシリンダ７を接続する回路に設けた浮バルブ２９
と、この浮バルブ２９を浮位置とする浮用切換弁３９
と、前記第１の検出手段の検出信号と転圧信号によって
浮用切換弁３９を切換えて浮バルブ２９を浮位置とする
手段より構成した請求項１記載の転圧・ブレーカ作業機
械。2. The floating switching means outputs a breaker signal and a compaction signal, a first detecting means for detecting that a service valve 22 for supplying pressure oil to the vibration generator 12 is at a pressure oil supply position. Selector switch 37, and a floating valve 29 provided in a circuit connecting the boom valve 19 and the boom cylinder 7.
And a floating switching valve 39 that sets the floating valve 29 to a floating position.
2. The rolling / breaker working machine according to claim 1, further comprising means for switching the floating switching valve 39 in accordance with the detection signal of the first detecting means and the rolling signal to bring the floating valve 29 to the floating position. 【請求項３】 前記第１の検出手段を、サービス弁２２
の受圧部２２ａとサービス弁用油圧パイロット弁３３を
接続するサービス弁用パイロット回路３５の圧力を検出
する圧力スイッチ３６とし、 この圧力スイッチ３６からの信号とセレクタスイッチ３
７からの転圧信号が入力された後に作動するタイマリレ
ー３８を設け、このタイマリレー３８が作動すると浮用
切換弁３９のソレノイド４０に通電し、その浮用切換弁
３９を浮バルブ２９の受圧部３０に圧油を供給する位置
とする請求項２記載の転圧・ブレーカ作業機械。3. The service valve 22 includes the first detecting means.
The pressure switch 36 for detecting the pressure of the service valve pilot circuit 35 that connects the pressure receiving portion 22a of the above and the service valve hydraulic pilot valve 33 is used as a signal from the pressure switch 36 and the selector switch 3
7 is provided with a timer relay 38 that operates after the pressure-rolling signal from 7 is input. When the timer relay 38 operates, the solenoid 40 of the floating switching valve 39 is energized, and the floating switching valve 39 receives the pressure of the floating valve 29. The rolling / breaker working machine according to claim 2, wherein the position 30 supplies pressure oil to the portion 30. 【請求項４】 前記浮切換手段を、ブーム弁１９を切換
えるブーム弁用油圧パイロット弁３２のレバー３２ａに
設けたスイッチ８０と、このブーム用油圧パイロット弁
３２からの出力圧力を検出するシャトル弁８１と、その
シャトル弁８１の出力側に設けた圧力スイッチ８２と、
セレクタスイッチ３７と、ブームシリンダ７とブーム弁
１９との接続回路に設けた浮バルブ２９と、この浮バル
ブ２９を浮位置とする信号を出力する浮用切換弁３９
と、前記スイッチ８０からの信号とセレクタスイッチ３
７からの転圧信号が入力され、かつ前記圧力スイッチ８
２から信号が入力されない時にのみ浮用切換弁３９に切
換信号を出力する手段より構成した請求項１記載の転圧
・ブレーカ作業機械。4. A switch 80 provided on the lever 32a of the boom valve hydraulic pilot valve 32 for switching the boom valve 19, and a shuttle valve 81 for detecting the output pressure from the boom hydraulic pilot valve 32. And a pressure switch 82 provided on the output side of the shuttle valve 81,
A selector switch 37, a floating valve 29 provided in a connection circuit between the boom cylinder 7 and the boom valve 19, and a floating switching valve 39 that outputs a signal for setting the floating valve 29 to a floating position.
And the signal from the switch 80 and the selector switch 3
7 receives the rolling pressure signal from the pressure switch 8 and
2. The rolling / breaker working machine according to claim 1, comprising means for outputting a switching signal to the floating switching valve 39 only when a signal is not input from 2. 【請求項５】 前記浮切換手段を、ブームシリンダ７に
圧油を供給するブーム弁１９を浮位置を有するものと
し、このブーム弁１９を切換えるブーム弁用油圧パイロ
ット弁３２をデテント機構を有するものとした請求項１
記載の転圧・ブレーカ作業機械。5. The floating switching means comprises a boom valve 19 for supplying pressure oil to the boom cylinder 7 in a floating position, and a boom valve hydraulic pilot valve 32 for switching the boom valve 19 having a detent mechanism. And claim 1
Rolling compaction / breaker work machine described. 【請求項６】 前記振動発生装置１２の本体１３に作業
具挿入孔７２をシリンダ孔４３と連続して形成し、この
作業具挿入孔７２にフック７５を備えたキャップ７４を
着脱自在とした請求項１又は２又は３又は４は５記載の
転圧・ブレーカ作業機械。6. A work tool insertion hole 72 is formed continuously with the cylinder hole 43 in the main body 13 of the vibration generator 12, and a cap 74 having a hook 75 is detachably attached to the work tool insertion hole 72. Item 1 or 2 or 3 or 4 is a compaction / breaker working machine according to item 5.
JP7265320A 1995-10-13 1995-10-13 Compaction/breaker working machine Pending JPH09111810A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP7265320A JPH09111810A (en) 1995-10-13 1995-10-13 Compaction/breaker working machine
KR1019960044637A KR970021536A (en) 1995-10-13 1996-10-08 Voltage, sub-raker work machine
PCT/JP1996/002958 WO1997013925A1 (en) 1995-10-13 1996-10-11 Roller-crusher
EP96933627A EP0855468A4 (en) 1995-10-13 1996-10-11 Roller-crusher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7265320A JPH09111810A (en) 1995-10-13 1995-10-13 Compaction/breaker working machine

Publications (1)

Publication Number Publication Date
JPH09111810A true JPH09111810A (en) 1997-04-28

Family

ID=17415561

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7265320A Pending JPH09111810A (en) 1995-10-13 1995-10-13 Compaction/breaker working machine

Country Status (4)

Country Link
EP (1) EP0855468A4 (en)
JP (1) JPH09111810A (en)
KR (1) KR970021536A (en)
WO (1) WO1997013925A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003027519A (en) * 2001-07-17 2003-01-29 Furukawa Co Ltd Hydraulic breaker
CN104005329A (en) * 2014-06-10 2014-08-27 中铁科工集团有限公司 Constant pressure compensation system and method for vibration source
CN111764246A (en) * 2020-07-08 2020-10-13 山东公路机械厂有限公司 Crushing and tamping device and crushing and tamping all-in-one machine comprising same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2337548B (en) * 1998-05-16 2002-02-20 Simon James Oliver Self-contained pavement crusher
NL1023208C2 (en) 2003-04-17 2004-11-09 Jozeph Maria Vermeulen Method and device for loosening bulk material in ships.
CN109382159B (en) * 2018-12-18 2024-03-12 广西华银铝业有限公司 Novel cone crusher arm support cap

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5169309U (en) * 1974-11-11 1976-06-01
JPS6314653U (en) * 1986-07-10 1988-01-30
JP3282895B2 (en) * 1993-08-30 2002-05-20 株式会社小松製作所 Hydraulic excavator with arm with built-in breaker

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003027519A (en) * 2001-07-17 2003-01-29 Furukawa Co Ltd Hydraulic breaker
JP4531303B2 (en) * 2001-07-17 2010-08-25 古河機械金属株式会社 Hydraulic breaker
CN104005329A (en) * 2014-06-10 2014-08-27 中铁科工集团有限公司 Constant pressure compensation system and method for vibration source
CN104005329B (en) * 2014-06-10 2016-01-20 中铁工程机械研究设计院有限公司 A kind of vibration source constant-pressure compensation system
CN111764246A (en) * 2020-07-08 2020-10-13 山东公路机械厂有限公司 Crushing and tamping device and crushing and tamping all-in-one machine comprising same

Also Published As

Publication number Publication date
EP0855468A4 (en) 2000-01-26
EP0855468A1 (en) 1998-07-29
KR970021536A (en) 1997-05-28
WO1997013925A1 (en) 1997-04-17

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