JP2642455B2 - Anti-theft device for electronically controlled hydraulic machines - Google Patents
Anti-theft device for electronically controlled hydraulic machinesInfo
- Publication number
- JP2642455B2 JP2642455B2 JP28569188A JP28569188A JP2642455B2 JP 2642455 B2 JP2642455 B2 JP 2642455B2 JP 28569188 A JP28569188 A JP 28569188A JP 28569188 A JP28569188 A JP 28569188A JP 2642455 B2 JP2642455 B2 JP 2642455B2
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- control circuit
- engine key
- switch
- circuit device
- 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 - Lifetime
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Description
【発明の詳細な説明】 [産業上の利用分野] 本発明は、マイクロコンピユータよりなる制御回路系
によつてその作動部材の動作が制御される電子制御式の
例えば油圧シヨベル等の電子制御式油圧機械における盗
難防止装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electronically controlled hydraulic system such as a hydraulic shovel, in which the operation of its operating member is controlled by a control circuit system comprising a microcomputer. The present invention relates to an anti-theft device in a machine.
[従来の技術] 第6図は、この種従来の電子制御式油圧機械、例えば
電子制御式油圧シヨベルの構成を示すブロツク図であ
る。[Prior Art] FIG. 6 is a block diagram showing the configuration of a conventional electronically controlled hydraulic machine of this kind, for example, an electronically controlled hydraulic shovel.
同図において、1は操作量入力装置で、例えばレバ
ー、ペダル等の操作部材と、該操作部材の操作量に応じ
た電気信号を発生する操作量検出器群よりなる出力手段
とを具備している。この操作量入力手段1からの出力
は、必要に応じ増幅、A/D変換等の処理を施こされ、操
作信号として制御回路装置2へ送出される。制御回路装
置2はマイクロコンピユータを含む制御回路系で構成さ
れて油圧機械全体の制御を司どる。そして、該制御回路
装置2は、制御対象となる後記する当該油圧アクチユエ
ータを前記操作信号に対応した量だけ駆動するため、操
作信号と予め定められたプログラム、データとに基づく
演算処理を実行し、この演算結果による制御信号を、必
要に応じD/A変換器、ドライバ回路等を介して、制御対
象となる油圧アクチユエータを制御する油圧バルブ装置
4の電磁駆動部5へ送出する。In FIG. 1, reference numeral 1 denotes an operation amount input device, which includes an operation member such as a lever and a pedal, and an output unit including an operation amount detector group that generates an electric signal according to the operation amount of the operation member. I have. The output from the manipulated variable input means 1 is subjected to processing such as amplification and A / D conversion as necessary, and is sent to the control circuit device 2 as an operation signal. The control circuit device 2 is composed of a control circuit system including a micro computer, and controls the entire hydraulic machine. Then, the control circuit device 2 executes arithmetic processing based on the operation signal and a predetermined program and data in order to drive the hydraulic actuator, which will be described later, to be controlled by an amount corresponding to the operation signal, A control signal based on the calculation result is transmitted to the electromagnetic drive unit 5 of the hydraulic valve device 4 that controls the hydraulic actuator to be controlled, via a D / A converter, a driver circuit, and the like as necessary.
上記電磁駆動部5は、例えばソレノイドバルブ等より
構成され、制御回路装置2からの前記制御信号によつて
作動される。そして、この電磁駆動部5の作動によつて
油圧バルブ装置4が制御され、油圧バルブ装置4の制御
下にある、油圧シリンダ、油圧モータ等の油圧アクチユ
エータ6が、前記操作量入力装置1の操作部材の操作量
に対応した量だけ駆動される。上記油圧アクチユエータ
6は、例えば油圧シヨベルにおける、旋回台(本体)、
ブーム、アーム、パケツト等の作動部材を駆動するよう
にされており、油圧回路装置3中には、複数の油圧アク
チユエータ6と、電磁駆動部5付きの油圧バルブ装置4
とが設けられていて、各油圧アクチユエータ6は対応す
る油圧バルブ装置4を介して油圧ポンプ7からの圧油を
供給されるようになつている。The electromagnetic drive unit 5 is constituted by, for example, a solenoid valve or the like, and is operated by the control signal from the control circuit device 2. The hydraulic valve device 4 is controlled by the operation of the electromagnetic drive unit 5, and a hydraulic actuator 6 such as a hydraulic cylinder or a hydraulic motor under the control of the hydraulic valve device 4 operates the operation amount input device 1. The member is driven by an amount corresponding to the operation amount of the member. The hydraulic actuator 6 includes, for example, a swivel (main body) in a hydraulic shovel,
Actuating members such as a boom, an arm, and a packet are driven. A hydraulic circuit device 3 includes a plurality of hydraulic actuators 6 and a hydraulic valve device 4 having an electromagnetic drive unit 5.
Each hydraulic actuator 6 is supplied with hydraulic oil from a hydraulic pump 7 via a corresponding hydraulic valve device 4.
8は、例えば鉛蓄電池よりなるバツテリーで、その
(−)端子を車体(本体)9に接地され、その(+)端
子をエンジンキースイツチ10に接続されている。エンジ
ンキースイツチ10は、前記制御回路装置2に電源回線に
より接続されていると共に、前記油圧ポンプ7駆動用の
エンジン11のためのスターターモータ12にも接続されて
いて、エンジンキースイツチ10にエンジンキー13を挿し
込んでスイツチをオンさせることによつて、制御回路系
に電源電流を供給すると共に、スターターモータ12を始
動させるようになつている。Reference numeral 8 denotes a battery made of, for example, a lead-acid battery, and its (-) terminal is grounded to the vehicle body (body) 9 and its (+) terminal is connected to the engine key switch 10. The engine key switch 10 is connected to the control circuit device 2 by a power line and also to a starter motor 12 for an engine 11 for driving the hydraulic pump 7. By inserting the switch 13 and turning on the switch, a power supply current is supplied to the control circuit system and the starter motor 12 is started.
[発明が解決しようとする課題] 上述したように、従来構成においては総ての回路の起
動をエンジンキースイツチ10のみによつて行なうように
なつている。また、油圧シヨベルのような油圧機械にあ
つては、1メーカーから販売される全種類の油圧シヨベ
ルは、同一機種間、大型・小型等の異種機種間を問わ
ず、総て同一の(1種類の)エンジンキー13によつて起
動されるようになつているので、建設業界の慣習となつ
ている。このため、油圧シヨベル等を運転する作業者は
個々にエンジンキーを携帯していれば、同一メーカーの
油圧シヨベルであれば作業交代時にエンジンキーを交換
する必要がなく、甚だ使い勝手が良い。[Problems to be Solved by the Invention] As described above, in the conventional configuration, all the circuits are started only by the engine key switch 10. For hydraulic machines such as hydraulic shovels, all types of hydraulic shovels sold by one manufacturer are the same (one type) regardless of whether they are of the same model or of different types such as large and small. ) Is activated by an engine key 13, which is customary in the construction industry. For this reason, if the operator who drives the hydraulic shovel or the like carries the engine key individually, the hydraulic shovel of the same maker does not need to replace the engine key at the time of work change, which is extremely convenient.
しかしながら、従来の該種油圧シヨベル等の油圧機械
にあつては、その走行速度がきわめて低速で重量もあ
り、一般車と異なり特殊用途であること等によつて盗難
に対する配慮がなされていなかつた。このため、上述の
如く1つのエンジンキーの共用性が高いので、同一メー
カーのエンジンキーを所有しているものであれば、建設
現場に放置されている油圧シヨベル等の油圧機械を誰で
も運転できることになり、盗難の危険性が大きく、近時
夜間等に油圧機械をトレーナで搬送して盗み去られると
いう事態が時として報告されている。However, conventional hydraulic machines such as hydraulic shovels have a very low traveling speed and heavy weight, and have not been considered for theft due to being specially used unlike general vehicles. For this reason, since one engine key is highly versatile as described above, anyone who has an engine key of the same manufacturer can operate a hydraulic machine such as a hydraulic shovel that has been left at a construction site. It has been reported that the risk of theft is high, and that the hydraulic machine is transported by a trainer and is stolen recently at night or the like.
この点に対処するために、油圧機械の個々でそのエン
ジンキーを異なつたものにすることも考えられるが、市
場においてはエンジンキーは共用のものであるという認
識が定着しており、作業者が交代時にエンジンキーを交
換する慣習がないため、建設現場での混乱を招き、実状
にそぐわない。また、盗難防止用の警音発生装置を付設
することも考えられるが、山中等の建設現場に放置され
ることの多いこの種の油圧機械においては、警音の効果
をさほどに期待できないという問題があつた。To deal with this point, it is conceivable to use a different engine key for each hydraulic machine.However, in the market, the perception that the engine key is a common one has been established. Since there is no custom to change the engine key at the time of replacement, it causes confusion at the construction site and does not fit the actual situation. It is also conceivable to install a burglar alarm device to prevent theft, but this type of hydraulic machine, which is often left in construction sites such as in the mountains, cannot be expected to have a significant audible noise effect. There was.
本発明は上記の点に鑑みなされたもので、その目的と
するところは、エンジンキー共用という慣習を排するこ
となく、盗難防止対策が図れる電子制御式油圧機械を提
供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electronically controlled hydraulic machine capable of preventing theft without excluding customs of sharing an engine key.
[課題を解決するための手段] 本発明による電子制御式油圧機械の盗難防止装置は、
上記した目的を達成するため、レバー、ペダル等の操作
部材並びに該操作部材の操作量に応じた電気的な操作信
号を出力する出力手段を有する操作量入力装置と、油圧
アクチユエータを制御するための油圧バルブ装置と、前
記操作信号に基づき前記油圧バルブ装置の電磁駆動部を
作動させるための制御信号を送出する制御回路装置と、
バツテリーと油圧ポンプ駆動用エンジンのスターターモ
ータ及び前記制御回路装置との間に配設されたエンジン
キースイツチとを具備した電子制御式油圧機械におい
て、予め定められた組合せ符号によつてのみ導通状態と
なる組合せスイツチを、前記バツテリーと前記エンジン
キースイツチとの間の回線、または前記エンジンキース
イツチと前記制御回路装置との間の回線、または前記操
作量入力手段と前記制御回路装置との間の回線、または
前記制御回路装置と前記油圧制御弁の電磁駆動部との間
の回線のうちの少くとも1つに配設した、構成とされ
る。[Means for Solving the Problems] The anti-theft device for an electronically controlled hydraulic machine according to the present invention comprises:
In order to achieve the above object, an operation amount input device having an operation member such as a lever and a pedal and an output means for outputting an electric operation signal in accordance with an operation amount of the operation member, and an operation amount control device for controlling a hydraulic actuator A hydraulic valve device, a control circuit device that sends out a control signal for operating an electromagnetic drive unit of the hydraulic valve device based on the operation signal,
In an electronically controlled hydraulic machine including a battery, an engine key switch disposed between a starter motor of a hydraulic pump driving engine and the control circuit device, a conductive state is established only by a predetermined combination code. A line between the battery and the engine key switch, a line between the engine key switch and the control circuit device, or a line between the operation amount input means and the control circuit device. Alternatively, at least one of the lines between the control circuit device and the electromagnetic drive unit of the hydraulic control valve is disposed.
[作 用] 上述の如く、予め定められた組合せ符号によつてのみ
導通状態となる組合せスイツチを、油圧機械の電源回路
系や信号回路系に設けておき、作業期間中は組合せスイ
ツチを導通状態としておき、通常運用期間中の作業者の
交代、休憩などに伴うエンジンのスタート、ストツプ
は、これまでの慣習通り共通のキースイツチによりエン
ジンキースイツチを操作することによつて行なう。ま
た、一連の作業が終了し、建設現場に油圧シヨベル等の
油圧機械を残して作業者全員が現場を離れる時等には、
作業責任者等が前記組合せスイツチを操作して組合せ導
通状態を解除しておくようにされる。これによつて、エ
ンジンキーによつてエンジンキースイツチをオンさせて
もシステムが作動しない状態となつて、例え悪意の侵入
者がエンジンキースイツチをオンさせても油圧機械が運
転不能状態にあるので、盗難は可及的に防止される。ま
た、組合せスイツチを用いているので、場合によつては
導通状態となる組合せ符号の変更も可能となる。[Operation] As described above, a combination switch that is made conductive only by a predetermined combination code is provided in a power supply circuit system or a signal circuit system of a hydraulic machine, and the combination switch is made conductive during a work period. In the meantime, the start and stop of the engine due to the change of workers, breaks, etc. during the normal operation period are performed by operating the engine key switch with the common key switch as in the past custom. Also, when a series of work is completed and all workers leave the site leaving a hydraulic machine such as a hydraulic shovel at the construction site,
A work manager or the like operates the combination switch to release the combination conduction state. As a result, the system does not operate even if the engine key switch is turned on by the engine key, and the hydraulic machine is inoperable even if a malicious intruder turns on the engine key switch. , Theft is prevented as much as possible. Further, since the combination switch is used, it is possible to change the combination code which becomes conductive depending on the case.
[実施例] 以下本発明を図示した実施例によつて説明する。第1
図〜第3図は本発明の1実施例に係り、第1図は電子制
御式油圧機械のブロツク図、第2図は組合せスイツチを
示す斜視図、第3図は第2図の組合せスイツチの導通状
態を示す説明図である。[Embodiment] The present invention will be described below with reference to an illustrated embodiment. First
FIGS. 1 to 3 relate to an embodiment of the present invention. FIG. 1 is a block diagram of an electronically controlled hydraulic machine, FIG. 2 is a perspective view showing a combination switch, and FIG. 3 is a view of the combination switch of FIG. It is explanatory drawing which shows a conduction state.
第1図において、1は操作量入力装置、2は制御回路
装置、3は油圧回路装置、4は油圧バルブ装置、5は電
磁駆動部、6は油圧アクチユエータ、7は油圧ポンプ、
8はバツテリー、9は車体(本体)、10はエンジンキー
スイツチ、11はエンジン、12はスターターモータ、13は
エンジンキーで、これらは総て前記した第6図の従来構
成と均等なものであるので、その説明は重複を避けるた
め省略する。図中、14は、予め定められた組合せ符号に
よつてのみ導通状態となる組合せスイツチで、該実施例
においては、前記エンジンキースイツチ10と前記制御回
路装置2との間の電源回線中に配設されている。In FIG. 1, 1 is an operation amount input device, 2 is a control circuit device, 3 is a hydraulic circuit device, 4 is a hydraulic valve device, 5 is an electromagnetic drive unit, 6 is a hydraulic actuator, 7 is a hydraulic pump,
Reference numeral 8 denotes a battery, 9 denotes a vehicle body (body), 10 denotes an engine key switch, 11 denotes an engine, 12 denotes a starter motor, and 13 denotes an engine key, all of which are equivalent to the above-described conventional configuration of FIG. Therefore, the description is omitted to avoid duplication. In the figure, reference numeral 14 denotes a combination switch which is made conductive only by a predetermined combination code. In this embodiment, the combination switch is disposed in a power supply line between the engine key switch 10 and the control circuit device 2. Has been established.
組合せスイツチ14の配置個所は上記以外にも、第1図
で2点鎖線で示したように、前記操作量入力装置1と前
記制御回路装置2との間の信号回線中、または制御回路
装置2と前記電磁駆動部5との間の信号回線中、または
前記バツテリー8と前記エンジンキースイツチ10との間
の電源回線中に配設しても良く、図示の4ケ所のうちの
少くとも1つに配設すれば良い。なお、組合せスイツチ
14は望ましくは、車体のエンジンルーム内やオペレータ
の運転席の下などその存在が容易に発見難い場所に設置
されるべきで、こうすることにより、部外者等が組合せ
スイツチ14を発見、操作する機会を少くでき、対盗難性
を高めることができる。In addition to the above, the location of the combination switch 14 is, as shown by a two-dot chain line in FIG. 1, in the signal line between the manipulated variable input device 1 and the control circuit device 2, or in the control circuit device 2. And the power supply line between the battery 8 and the engine key switch 10. At least one of the four positions shown in the figure may be provided in the power supply line between the battery 8 and the engine key switch 10. It is good to arrange in. The combination switch
Preferably, the combination switch 14 should be installed in a place where its existence is not easily found, such as in the engine room of the vehicle body or under the operator's driver's seat, so that an outsider etc. can find and operate the combination switch 14 The chances of theft and increase theft resistance.
前記組合せスイツチ14が、該実施例のように前記エン
ジンキースイツチ10と前記制御回路装置2との間の電源
回線中に配設されていると、該組合せスイツチ14が非導
通状態にある場合には、制御回路装置2は非給電状態に
あるのでシステムは作動しない。すなわち、エンジンキ
ー13によつてエンジンキースイツチ10をオンさせるとエ
ンジン11のみは始動可能であるが、油圧系を制御するた
めの制御信号が全く到来不能状態であるので、油圧系は
動作せず、従つて油圧駆動される車体(本体)の走行は
不能で、油圧シヨベル等の油圧機械のトレーナへの搭載
は、大型クレーンでも用いない限り不可能となる。これ
は、組合せスイツチ14を、操作量入力装置1と制御回路
装置2との間の信号回線中、もしくは、制御回路装置2
と電磁駆動部5との間の信号回線中に配設した場合でも
同様であり、また、組合せスイツチ14をバツテリー8と
エンジンキースイツチ10との間の電源回線中に配設した
場合は、制御回路系とエンジン11とが作動不能となる。When the combination switch 14 is disposed in a power supply line between the engine key switch 10 and the control circuit device 2 as in this embodiment, when the combination switch 14 is in a non-conductive state, The system does not operate because the control circuit device 2 is in a non-power supply state. That is, when the engine key switch 10 is turned on by the engine key 13, only the engine 11 can be started, but since the control signal for controlling the hydraulic system cannot be received at all, the hydraulic system does not operate. Therefore, the vehicle body (main body) which is hydraulically driven cannot travel, and mounting of a hydraulic machine such as a hydraulic shovel on a trainer becomes impossible unless a large crane is used. This means that the combination switch 14 is connected to a signal line between the manipulated variable input device 1 and the control circuit device 2 or to the control circuit device 2.
The same applies to the case where the combination switch 14 is provided in the power line between the battery 8 and the engine key switch 10. The circuit system and the engine 11 become inoperable.
前記組合せスイツチ14は、該実施例においては第2図
に示したように、複数個の小型の単位スライドスイツチ
15…を1つのケーシンング16に収納したものよりなつて
おり、また第3図に示したように、各単位スライドスイ
ツチ15の固定接点端子15a,15bのうちの何れか一方を、
択一的に隣接する単位スライドスイツチ15の可動接点端
子15cに接続した構成となつている。従つて、第3図に
示すような各単位スライドスイツチ15の可動接点15dの
切替え位置の組合せが選択された時のみ(所定の符号が
組合わされた時のみ)、組合せスイツチ14の入力端17と
出力端18とが導通状態となるようにされている。In this embodiment, as shown in FIG. 2, the combination switch 14 includes a plurality of small unit slide switches.
15 are housed in one casing 16, and as shown in FIG. 3, one of the fixed contact terminals 15a and 15b of each unit slide switch 15 is
Alternatively, it is configured to be connected to the movable contact terminal 15c of the adjacent unit slide switch 15. Therefore, only when the combination of the switching positions of the movable contacts 15d of each unit slide switch 15 as shown in FIG. 3 is selected (only when a predetermined code is combined), the input terminal 17 of the combination switch 14 is connected to the input terminal 17. The output terminal 18 is made conductive.
斯様な構成をとる該実施例にあつては、作業責任者等
が、組合せスイツチ14の存在と組合せスイツチ14を導通
状態する組合せ符号を認知しておき、一連の作業終了時
に組合せスイツチ14の導通状態を断ち(導通状態となる
符号の組合せを外し)、また、1日の作業開始時などに
作業責任者等が組合せスイツチ14を導通状態に戻すよう
になせば、 組合せスイツチ14を非導通状態にしておけば、エンジ
ンキー13のみではシステムが作動しないので、油圧シヨ
ベル等の油圧機械が動作せず、盗難を防止できる。In this embodiment having such a configuration, the person in charge of operation or the like recognizes the presence of the combination switch 14 and the combination code that makes the combination switch 14 conductive, and at the end of a series of operations, the operation of the combination switch 14 is completed. If the conduction state is cut off (removing the combination of codes that make the conduction state) and the person in charge of operation returns the combination switch 14 to the conduction state at the start of work, for example, the combination switch 14 is turned off. In this state, the system does not operate only with the engine key 13, so that a hydraulic machine such as a hydraulic shovel does not operate, thereby preventing theft.
組合せスイツチ14を導通状態としておけば、これまで
の運転慣習と同様にエンジンキー13のみで始動・停止で
きるので、利便性が良く、通常の作業者交代、休憩時等
には組合せスイツチ14の存在を全く意識せず、油圧機械
の運用が図れる。このため、現場責任者等でない一般の
オペレータには組合せスイツチ14の存在すら秘密にして
おけるので、対盗難性が一層向上する。If the combination switch 14 is set to the conducting state, it can be started and stopped only by the engine key 13 as in the conventional driving practice, so that the convenience is good, and the presence of the combination switch 14 at the time of ordinary worker change, break, etc. The operation of the hydraulic machine can be achieved without any awareness of the problem. For this reason, even the presence of the combination switch 14 can be kept secret from a general operator who is not the site manager or the like, and the antitheft property is further improved.
一般の油圧シヨベル等の油圧機械に付加的に取付ける
ことができ、ハーネスの全交換等を必要としないので、
生産性が良く、また市場での取付けも容易である。Since it can be additionally attached to a hydraulic machine such as a general hydraulic shovel, and it is not necessary to completely replace the harness, etc.,
Good productivity and easy installation on the market.
組合せスイツチ14の各単位スライドスイツチ15間の結
線仕様を変更することによつて、組合せスイツチ14が導
通状態となる符号の組合せの変更を、ユーザー側で随時
・容易に行なうことができる。また、組合せスイツチ14
を作動させるための別個のキー手段等を必要としないの
で利便性が良い。By changing the connection specification between the unit slide switches 15 of the combination switch 14, the user can easily and easily change the combination of the codes that makes the combination switch 14 conductive. In addition, combination switch 14
This is convenient because no separate key means or the like is required for operating the.
等の利点がある。There are advantages such as.
なお、組合せスイツチは、第2,3図示の前記した構成
の組合せスイツチ14以外にも種々の変形が可能である。
例えば、第4図に示した組合せスイツチ20のように、バ
ネ21で偏倚習性を付与された複数本のスライド体22に導
体部23を取付け、機械式キー24の凹凸符号の組合せで、
各スライド体22の導体部23を1列に整合させて隣接導体
部23同志を導通させ、組合せスイツチ20の入力端17と出
力端18とが導通状態となるようにしても良い。Note that the combination switch can be variously modified in addition to the combination switch 14 having the above-described configuration shown in FIGS.
For example, as shown in a combination switch 20 shown in FIG. 4, a conductor portion 23 is attached to a plurality of slide bodies 22 imparted with a biasing behavior by a spring 21, and a combination of concave and convex codes of a mechanical key 24 is used.
The conductor portions 23 of each slide body 22 may be aligned in a row so that the adjacent conductor portions 23 are electrically connected to each other, and the input end 17 and the output end 18 of the combination switch 20 may be in a conductive state.
或いは第5図に示した組合せスイツチ30のように、複
数個のマイクロスイツチ31を直列に接続すると共に、各
マイクロスイツチ31の作動杆に磁石32を極性を選択的に
変えて取付け、磁気式キー33の磁化部34の磁気符号の組
合せで、対応する磁石32と磁化部34とによる反発力で総
べてのマイクロスツチ31をオンさせ、組合せスイツチ30
の入力端17と出力端18とが導通状態となるように構成し
ても良い。Alternatively, as shown in a combination switch 30 shown in FIG. 5, a plurality of microswitches 31 are connected in series, and a magnet 32 is attached to the operating rod of each microswitch 31 by selectively changing the polarity. 33, all micro switches 31 are turned on by the repulsive force of the corresponding magnets 32 and magnetized parts 34, and the combination switch 30
May be configured such that the input terminal 17 and the output terminal 18 are electrically connected.
以上本発明を図示した実施例によつて説明したが、当
業者には本発明の精神を逸脱しない範囲で種々の変形が
考えられるところである。Although the present invention has been described with reference to the illustrated embodiments, those skilled in the art can make various modifications without departing from the spirit of the present invention.
[発明の効果] 叙上のように本発明によれば、エンジンキー共用とい
う該種油圧シヨベル等の油圧機械の運転慣習を排するこ
となく、盗難防止対策が図れる電子制御式油圧機械を提
供でき、その価値は大きい。[Effects of the Invention] As described above, according to the present invention, it is possible to provide an electronically controlled hydraulic machine capable of preventing theft without excluding the operating custom of a hydraulic machine such as a hydraulic shovel that is commonly used for an engine key. , Its value is great.
第1図〜第3図は本発明の1実施例に係り、第1図は電
子制御式油圧機械を示すブロツク図、第2図は組合せス
イツチの斜視図、第3図は組合せスイツチの導通状態時
の各可動接点の切替え位置を示す説明図、第4図及び第
5図は本発明のそれぞれ他の実施例に係る組合せスイツ
チを示す説明図、第6図は従来の電子制御式油圧機械を
示すブロツク図である。 1……操作量入力装置、2……制御回路装置、4……油
圧バルブ装置、5……電磁駆動部、6……油圧アクチユ
エータ、7……油圧ポンプ、8……バツテリー、10……
エンジンキースイツチ、11……エンジン、12……エンジ
ンキースイツチ、13……エンジンキー、14,20,30……組
合せスイツチ。1 to 3 relate to an embodiment of the present invention, FIG. 1 is a block diagram showing an electronically controlled hydraulic machine, FIG. 2 is a perspective view of a combination switch, and FIG. 3 is a conduction state of the combination switch. FIGS. 4 and 5 are explanatory diagrams showing a combination switch according to another embodiment of the present invention, and FIG. 6 is a diagram showing a conventional electronically controlled hydraulic machine. It is a block diagram shown. DESCRIPTION OF SYMBOLS 1 ... Operation input device, 2 ... Control circuit device, 4 ... Hydraulic valve device, 5 ... Electromagnetic drive unit, 6 ... Hydraulic actuator, 7 ... Hydraulic pump, 8 ... Battery, 10 ...
Engine key switch, 11… Engine, 12… Engine key switch, 13… Engine key, 14,20,30 …… Combined switch.
Claims (1)
部材の操作量に応じた電気的な操作信号を出力する出力
手段を有する操作量入力装置と、油圧アクチユエータを
制御するための油圧バルブ装置と、前記操作信号に基づ
き前記油圧バルブ装置の電磁駆動部を作動させるための
制御信号を送出する制御回路装置と、バツテリーと油圧
ポンプ駆動用エンジンのスターターモータ及び前記制御
回路装置との間に配設されたエンジンキースイツチとを
具備した電子制御式油圧機械において、 予め定められた組合せ符号によつてのみ導通状態となる
組合せスイツチを、前記バツテリーと前記エンジンキー
スイツチとの間の回線、または前記エンジンキースイツ
チと前記制御回路装置との間の回線、または前記操作量
入力手段と前記制御回路装置との間の回線、または前記
制御回路装置と前記油圧制御弁の電磁駆動部との間の回
線のうちの少くとも1つに配設したことを特徴とする電
子制御式油圧機械の盗難防止装置。An operation amount input device having an operation member such as a lever and a pedal and an output means for outputting an electric operation signal according to an operation amount of the operation member, and a hydraulic valve device for controlling a hydraulic actuator. A control circuit device for transmitting a control signal for operating the electromagnetic drive unit of the hydraulic valve device based on the operation signal; and a starter motor of a battery and a hydraulic pump driving engine and the control circuit device. An electronically controlled hydraulic machine having an engine key switch provided therein, wherein a combination switch that becomes conductive only by a predetermined combination code is connected to the line between the battery and the engine key switch, or A line between an engine key switch and the control circuit device, or a line between the operation amount input means and the control circuit device; An anti-theft device for an electronically controlled hydraulic machine, wherein the anti-theft device is provided in at least one of a line between the control circuit device and an electromagnetic drive unit of the hydraulic control valve.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28569188A JP2642455B2 (en) | 1988-11-14 | 1988-11-14 | Anti-theft device for electronically controlled hydraulic machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28569188A JP2642455B2 (en) | 1988-11-14 | 1988-11-14 | Anti-theft device for electronically controlled hydraulic machines |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02132233A JPH02132233A (en) | 1990-05-21 |
JP2642455B2 true JP2642455B2 (en) | 1997-08-20 |
Family
ID=17694793
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP28569188A Expired - Lifetime JP2642455B2 (en) | 1988-11-14 | 1988-11-14 | Anti-theft device for electronically controlled hydraulic machines |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2642455B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1386797B1 (en) * | 1994-04-14 | 2007-05-30 | Fujitsu Ten, Ltd. | Anti-theft device for a vehicle |
US5632190A (en) * | 1995-05-26 | 1997-05-27 | Hitachi Construction Machinery Co., Ltd. | Burglarproof device for hydraulic machine |
-
1988
- 1988-11-14 JP JP28569188A patent/JP2642455B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH02132233A (en) | 1990-05-21 |
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