JPH0647905Y2 - Boom drive control device release device for work vehicle - Google Patents
Boom drive control device release device for work vehicleInfo
- Publication number
- JPH0647905Y2 JPH0647905Y2 JP6306589U JP6306589U JPH0647905Y2 JP H0647905 Y2 JPH0647905 Y2 JP H0647905Y2 JP 6306589 U JP6306589 U JP 6306589U JP 6306589 U JP6306589 U JP 6306589U JP H0647905 Y2 JPH0647905 Y2 JP H0647905Y2
- Authority
- JP
- Japan
- Prior art keywords
- boom
- drive
- regulation
- boom drive
- system abnormality
- 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
Links
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- Jib Cranes (AREA)
- Forklifts And Lifting Vehicles (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、ブーム作動状態検出装置に於けるシステム上
の異常によりブーム駆動規制装置によるブーム駆動装置
の規制が行われた場合のみブーム駆動規制装置によるブ
ーム駆動装置の規制を解除するようにした作業車のブー
ム駆動規制装置の解除装置に関するものである。[Detailed Description of the Invention] [Industrial field of application] The present invention provides a boom drive regulation only when the boom drive regulation device regulates the boom drive device due to a system abnormality in the boom operating state detection device. The present invention relates to a release device for a boom drive restricting device of a work vehicle, which is configured to release the restriction of the boom drive device by the device.
今日の作業車、例えば高所作業車・クレーン等に代表さ
れる作業車には、転倒、過荷重防止のためにブームの作
業範囲が定格作業範囲を越えてなされる様な場合には、
ブームの起伏(起伏下げ)、伸縮(伸長)をはじめブー
ム旋回等の各装置の駆動がブーム駆動規制装置からの信
号によって規制、即ち危険側(転倒側)へ駆動されるこ
とを自動的に停止するためのブーム駆動規制装置を設け
ているのが実情である。In today's work vehicles, such as work vehicles represented by aerial work vehicles and cranes, when the work range of the boom exceeds the rated work range to prevent falls and overloads,
The drive of each device such as boom undulation (lowering), expansion and contraction (extension), and boom turning is regulated by a signal from the boom drive regulation device, that is, automatically stopped from being driven to the dangerous side (falling side). The reality is that a boom drive restricting device is provided for this purpose.
従来の高所作業車あるいはクレーン車等の作業車に装備
されているブーム駆動規制装置は、第2図にその概略を
示す如く、ブーム作動状態検出装置10とブーム定格作業
範囲演算装置11と前記ブーム作動状態検出装置10の各検
出器のシステム上の異常を判断するシステム異常判断装
置12とブーム駆動規制装置13とブーム駆動14で構成さ
れ、前記ブーム作動状態検出装置10に於けるブーム起伏
角度検出器・ブーム伸縮長検出器・ブーム旋回位置検出
器で検出した検出データがブーム定格作業範囲演算装置
11で定格作業範囲を逸脱する判断されると、ブーム駆動
規制装置13を作動させてブーム駆動装置14の規制を行う
と共に、前記ブーム作動状態検出装置10における上記の
各装置検出器のシステム上の故障がシステム異常判断装
置12によって異常であると判断された場合に於いても同
様にブーム駆動規制装置13が作動してブーム駆動装置14
を規制するように構成しているのが通常である。As shown in FIG. 2, a boom drive restricting device equipped in a conventional work vehicle such as an aerial work vehicle or a crane car has a boom operating state detecting device 10, a boom rated work range calculating device 11 and the above-mentioned device. The boom operating state detecting device 10 comprises a system abnormality judging device 12 for judging an abnormality in the system of each detector, a boom drive restricting device 13 and a boom drive 14, and the boom hoisting angle in the boom operating state detecting device 10 The detection data detected by the detector, boom extension length detector, and boom turning position detector is the boom rated work range calculator.
When it is judged that the work range deviates from the rated work range in 11, the boom drive restricting device 13 is operated to restrict the boom drive device 14, and at the same time, the system of each of the above device detectors in the boom operation state detecting device 10 is controlled. Even when the malfunction is judged to be abnormal by the system malfunction judging device 12, the boom driving restricting device 13 operates similarly and the boom driving device 14
Is usually configured to regulate.
従って、安全性の確保の点に於いては非常に効果的なシ
ステムと言えるが、しかし、上記の構成による従来のブ
ーム駆動規制システムは、システム上に異常が発生した
場合に於いても本来の作業範囲逸脱による危険を防止す
るための規制と同様にブーム駆動装置14の規制を行って
いるために、ブーム作動状態検出装置10による検出では
十分に安全なブーム駆動を行うことが可能な場合に於い
ても一律に規制を行う構成であるために作業中、システ
ム故障により危険側への作動が停止した場合、高所作業
車等に於いては作業者はバケット内に置かれたまま地上
に降りることができなくなり、従来の高所作業車等では
サービスマンに緊急連絡を行ってバケットを地上に降ろ
すか或いは前述したブーム駆動規制装置13に直接当該ブ
ーム駆動規制装置13の規制状態を解除するための解除ス
イッチ13a等を取り付け、前述のような場合に解除スイ
ッチ13aを操作して当該ブーム駆動規制装置13によるブ
ーム駆動装置14の規制を解除している。Therefore, it can be said that it is a very effective system in terms of ensuring safety. However, the conventional boom drive regulation system with the above-mentioned configuration does not work even if an abnormality occurs in the system. Since the boom drive device 14 is regulated in the same manner as the regulation for preventing the danger due to deviation from the work range, it is possible to detect a sufficient safe boom drive by the boom operating state detection device 10. Even in such a case, when the work to the dangerous side is stopped due to a system failure during work because of the uniform regulation, the worker on the aerial work vehicle, etc. is left on the ground while being placed in the bucket. It becomes impossible to descend, and in the case of a conventional aerial work vehicle, etc., an emergency contact is made to a service person to drop the bucket to the ground, or the boom drive restricting device 13 is directly connected to the boom drive restricting device 13 described above. Attaching the release switch 13a or the like for canceling the restricted state, and release the restriction of the boom driving device 14 according to the boom driving restricting device 13 by operating the release switch 13a when as described above.
然し、上記の構成によるブーム駆動規制装置13の規制状
態の解除は解除スイッチ13aを単にON−OFFすることによ
り無条件にブーム駆動規制装置13の規制状態を解除(規
制を全く効かなく)するものであるために、本来的な作
業範囲の逸脱による規制であるかシステム異常による規
制なのかを判断することが不可能であり、作業範囲の逸
脱による規制の場合に於いても規制を解除してしまい作
業車を転倒させる危険性を有すると共に、作業者の誤操
作、作業者の故意による解除に於いて全く無防備であ
り、転倒、破損に到る危険性が非常に大きいものであっ
た。However, in order to release the restricted state of the boom drive restricting device 13 having the above-described configuration, the restricted state of the boom drive restricting device 13 is unconditionally released (the restriction is not effective at all) by simply turning ON / OFF the release switch 13a. Therefore, it is impossible to judge whether the regulation is due to deviation from the original work range or due to system abnormality. In addition to the risk of overturning the work vehicle, it is completely unprotected in case of an operator's mistaken operation or intentional release by the operator, and there is a great risk of falling or damage.
本考案は上記の問題点に鑑みてなされたものであり、そ
の目的とするところは、ブーム作動状態検出装置に於け
るシステム上の異常によりブーム駆動規制装置によるブ
ーム駆動装置の規制が行われた場合のみブーム駆動規制
装置によるブーム駆動装置の規制を解除するようにした
作業車のブーム駆動規制装置の解除装置を提供すること
にあり、そのためにブーム作動状態検出装置と、該ブー
ム作動状態検出装置からの検出信号と定格データに基づ
いて当該ブームの定格作業範囲を演算するブーム定格作
業範囲演算装置と、前記ブーム作動状態検出装置のシス
テム上の異常を判断するシステム異常判断装置と、前記
ブーム定格作業範囲演算装置の演算信号乃至前記システ
ム異常判断装置の判断信号に基づいてブームの各駆動装
置を規制するブーム駆動規制装置と、該ブーム駆動規制
装置の信号に基づいてブームの各駆動装置を駆動するブ
ーム駆動装置とを備えた高所作業車に於いて、前記シス
テム異常判断装置の判断信号により、システムが異常と
判断された場合に、前記ブーム駆動規制装置によるブー
ム駆動装置の規制を解除することのできる規制解除装置
を設けるべく構成する。The present invention has been made in view of the above problems, and an object of the present invention is to restrict the boom drive device by the boom drive restriction device due to a system abnormality in the boom operating state detection device. The present invention is to provide a boom drive restricting device releasing device for a work vehicle, in which the boom drive restricting device does not restrict the boom drive device. Therefore, the boom operating condition detecting device and the boom operating condition detecting device are provided. A boom rating work range computing device that computes the rated work range of the boom based on the detection signal from the boom and the rating data, a system abnormality determination device that determines a system abnormality of the boom operation state detection device, and the boom rating. A boot for restricting each drive device of the boom based on the calculation signal of the work range calculation device or the judgment signal of the system abnormality judgment device. In an aerial work vehicle equipped with a drive control device and a boom drive device that drives each drive device of the boom based on a signal from the boom drive control device, a system is determined by a determination signal of the system abnormality determination device. A configuration is provided in which a regulation release device is provided that is capable of releasing the regulation of the boom drive device by the boom drive regulation device when it is determined to be abnormal.
上記のような構成を採用したので、ブームが駆動状態に
於いてブーム駆動規制装置が働きブーム駆動装置が規制
を受けた場合でも、当該規制がブーム作動状態検出装置
によって正常に検出した結果の本来的な定格作業範囲の
逸脱によるブーム駆動装置の規制なのか、システム異常
判断装置によるシステム異常の結果の規制なのかを規制
解除装置を操作することによって即時に判断することが
可能であるから、当該ブーム駆動装置の規制がブームが
危険な作業域に有ることによる本来的な定格作業範囲の
逸脱による規制である場合は、作業者の規制解除装置の
操作によるも当該ブーム駆動規制装置によるブーム駆動
装置の解除は成されず規制状態はそのまま継続されるの
で作業車の安全は十分に確保され、一方、当該ブーム駆
動装置の規制がシステム異常判断装置によるブーム作動
状態検出装置のシステム上の規制である場合は当該ブー
ム駆動装置の規制を作業者の任意な意思にて解除でき、
従ってブーム作動状態検出装置のシステム上の異常によ
る規制の場合はブームを目的とする位置まで駆動させて
作業者を安全に地上に降ろすことができ、従来の作業車
のブーム駆動規制装置の解除装置に比べて非常に安全性
が高く効率の良い高所作業が行える。Since the above configuration is adopted, even if the boom drive control device operates and the boom drive device is restricted while the boom is in the driving state, the original result of the normal detection by the boom operation state detection device is the restriction. By operating the deregulation device, it is possible to immediately determine whether the boom drive device is regulated due to deviation from the rated work range or whether the system abnormality determination device regulates the system abnormality result. If the regulation of the boom drive device is the regulation due to deviation from the original rated work range due to the boom being in a dangerous work area, the boom drive device by the boom drive regulation device may also be operated by the operator. Is not released and the regulated state continues, so the safety of the work vehicle is sufficiently secured, while the boom drive device is not regulated. If by Temu abnormality determination apparatus is restricted on the system of the boom operating state detecting device can be released at any intent worker regulations of the boom driving device,
Therefore, in the case of regulation due to an abnormality in the system of the boom operating state detection device, the boom can be driven to the target position and the operator can be safely lowered to the ground. Compared with, it can perform work in high places with high safety and efficiency.
以下、第1図に基づいて本考案に係る作業車のブーム駆
動規制装置の解除装置の一実施例を詳細に説明する。Hereinafter, an embodiment of a release device for a boom drive restricting device for a work vehicle according to the present invention will be described in detail with reference to FIG.
図中、1はブーム起伏角度検出器・ブーム伸縮長検出器
・ブーム旋回位置検出器・アウトリガ張幅検出器・ブー
ム吊り荷重検出器等で構成されるブーム作動状態検出装
置であり、ブーム作動状態検出装置1の後段には該ブー
ム作動状態検出装置で検出したブームの現実の作動状態
のデータと、予め記憶している定格作業範囲データから
当該ブームの作業範囲を決定するブーム定格作業範囲演
算装置2が設けられると共に、前記ブーム作動状態検出
装置1のそれぞれの検出器のシステム上の異常及び前記
ブーム定格作業範囲演算装置2のシステム上の異常を判
断するシステム異常判断装置3が設けられる。In the figure, reference numeral 1 is a boom operation state detection device including a boom up / down angle detector, a boom extension / contraction length detector, a boom turning position detector, an outrigger tension width detector, and a boom suspension load detector. A boom rated work range calculation device for determining the work range of the boom from the actual work state data of the boom detected by the boom work state detection device and the rated work range data stored in advance in the subsequent stage of the detection device 1. 2 is provided, and a system abnormality determination device 3 that determines a system abnormality of each detector of the boom operation state detection device 1 and a system abnormality of the boom rated work range calculation device 2 is provided.
又、上記ブーム定格作業範囲演算装置2とシステム異常
判断装置3の後段には、これら両ブーム定格作業範囲演
算装置2とシステム異常判断装置3からのデータを受け
これら両装置2及び3からのデータが正常、つまりブー
ムの作業範囲が定格作業範囲であり、かつ各検出器にシ
ステム上の異常が存しない状態では後述するブーム駆動
装置5、即ちブーム起伏シリンダー・ブーム伸縮シリン
ダー及びターンテーブル旋回モータ等を正常に駆動さ
せ、上記両装置2及び3からのデータが定格作業範囲を
逸脱するデータであったり、システム上に異常有りとす
るデータである場合は次段のブーム駆動装置5の駆動を
規制(停止)するためのブーム駆動規制装置4が設けら
れる。Further, after the boom rated work range calculation device 2 and the system abnormality determination device 3, the data from the boom rated work range calculation device 2 and the system abnormality determination device 3 are received. Is normal, that is, the work range of the boom is the rated work range, and there is no system abnormality in each detector, the boom drive device 5 described later, that is, the boom hoisting cylinder / boom telescopic cylinder, turntable turning motor, etc. Is normally driven, and if the data from both the devices 2 and 3 deviates from the rated work range or data indicating that there is an abnormality in the system, the drive of the boom drive device 5 at the next stage is restricted. A boom drive restricting device 4 for (stopping) is provided.
4aは前記システム異常判断装置3での判断が異常である
と判断された場合にのみ前記ブーム駆動規制装置4によ
るブーム駆動装置5の規制を解除する規制解除装置(実
際にはアンド回路とON−OFFスイッチを採用して構成す
る)であって、該規制解除装置4aはシステム異常判断装
置3と前記ブーム駆動規制装置4との間に設けられる。The reference numeral 4a designates a restriction release device (actually an AND circuit and ON-ON) for releasing the restriction of the boom drive device 5 by the boom drive restriction device 4 only when the system abnormality judgment device 3 judges that the system is abnormal. The regulation release device 4a is provided between the system abnormality determination device 3 and the boom drive regulation device 4.
以下、上記の構成に基づいて本考案に係る作業車のブー
ム駆動規制装置の解除装置の作用を説明する。Hereinafter, the operation of the release device for the boom drive restricting device of the work vehicle according to the present invention will be described based on the above configuration.
即ち、本考案に係る作業車のブーム駆動規制装置の解除
装置は、ブーム作動状態検出装置1と、該ブーム作動状
態検出装置1からの検出信号と定格データに基づいて当
該ブームの定格作業範囲を演算するブーム定格作業範囲
演算装置2と、前記ブーム作動状態検出装置1のシステ
ム上の異常を判断するシステム異常判断装置3と、前記
ブーム定格作業範囲演算装置2の演算信号乃至前記シス
テム異常判断装置3の判断信号に基づいてブームの各駆
動装置を規制するブーム駆動規制装置4と、該ブーム駆
動規制装置4の信号に基づいてブームの各駆動装置を駆
動するブーム駆動装置5とを備えた高所作業車に於い
て、前記システム異常判断装置3と前記ブーム駆動規制
装置4との間にシステム異常判断装置3での判断が異常
と判断された場合のみ前記ブーム駆動規制装置4による
ブーム駆動装置5の規制を解除する規制解除装置4aを設
けたので、ブームが駆動状態に於いてブーム駆動規制装
置4が働きブーム駆動装置5が規制を受けた場合でも、
当該規制がブーム作動状態検出装置3によって正常に検
出した結果の本来的な定格作業範囲の逸脱によるブーム
駆動装置5の規制なのか、システム異常判断装置3によ
るシステム上の異常の結果の規制なのかを規制解除装置
4aを操作することによって即時に判断することが可能で
あるから、当該ブーム駆動装置5の規制がブームが危険
な作業域に有ることによる本来的な定格作業範囲の逸脱
による規制である場合は、作業者の規制解除装置4aの操
作によるも当該ブーム駆動規制装置4によるブーム駆動
装置5の解除は成されず規制状態はそのまま継続される
ので作業車の安全は十分に確保され、一方、当該ブーム
駆動装置5の規制がシステム異常判断装置3によるブー
ム作動状態検出装置1のシステム上の規制である場合は
当該ブーム駆動装置5の規制を作業者の任意な意思にて
解除でき、従ってブーム作動状態検出装置1のシステム
上の異常による規制の場合はブームを目的とする位置ま
で駆動させて作業者を安全に地上に降ろすことができ、
従来の作業車のブーム駆動規制装置の解除装置に比べて
非常に安全性が高く効率の良い高所作業が行える。That is, the release device for the boom drive restricting device for a work vehicle according to the present invention sets the boom working state detection device 1 and the rated work range of the boom based on the detection signal and the rating data from the boom working state detection device 1. A boom rated work range calculation device 2 for calculating, a system abnormality determination device 3 for determining a system abnormality of the boom operation state detection device 1, a calculation signal of the boom rated work range calculation device 2 or the system abnormality determination device A boom drive restricting device 4 that restricts each drive device of the boom based on the determination signal of No. 3, and a boom drive device 5 that drives each drive device of the boom based on the signal of the boom drive restricting device 4. In the case of a local work vehicle, when the system abnormality determination device 3 determines that the abnormality is determined between the system abnormality determination device 3 and the boom drive restriction device 4. Since the regulation release device 4a for releasing the regulation of the boom drive device 5 by the boom drive regulation device 4 is provided, even when the boom drive regulation device 4 operates and the boom drive device 5 is regulated while the boom is in the driven state. ,
Whether the regulation is regulation of the boom drive device 5 due to deviation from the original rated work range as a result of normal detection by the boom operating state detection device 3, or regulation of the result of system abnormality by the system abnormality determination device 3. Deregulator
Since it is possible to make an immediate judgment by operating 4a, when the regulation of the boom drive device 5 is a regulation due to deviation from the original rated work range due to the boom being in a dangerous work area, Even when the operator operates the restriction release device 4a, the boom drive restricting device 4 does not release the boom drive device 5 and the restriction state continues, so that the safety of the work vehicle is sufficiently secured. When the regulation of the drive device 5 is the system regulation of the boom operation state detection device 1 by the system abnormality determination device 3, the regulation of the boom drive device 5 can be released by an operator's arbitrary intention, and accordingly, the boom operation state can be released. In the case of regulation due to an abnormality on the system of the detection device 1, it is possible to drive the boom to a target position and safely lower the operator to the ground.
Compared with the conventional boom drive control device release device for work vehicles, it is extremely safe and efficient, and can perform high-altitude work.
本考案は、以上詳細に説明した如く、ブーム作動状態検
出装置と、該ブーム作動状態検出装置からの検出信号と
定格データに基づいて当該ブームの定格作業範囲を演算
するブーム定格作業範囲演算装置と、前記ブーム作動状
態検出装置のシステム上の異常を判断するシステム異常
判断装置と、前記ブーム定格作業範囲演算装置の判断信
号乃至前記システム異常判断装置の判断信号に基づいて
ブームの各駆動装置を規制するブーム駆動規制装置と、
該ブーム駆動規制装置の信号に基づいてブームの各駆動
装置を駆動するブーム駆動装置とを備えた高所作業車に
於いて、前記システム異常判断装置の判断信号により、
システムが異常と判断された場合に、前記ブーム駆動規
制装置によるブーム駆動装置の規制を解除することので
きる規制解除装置を設けるべく構成したので、ブームが
駆動状態に於いてブーム駆動規制装置が働きブーム駆動
装置が規制を受けた場合でも、当該規制がブーム作動状
態検出装置によって正常に検出した結果の本来的な定格
作業範囲の逸脱によるブーム駆動装置の規制なのか、シ
ステム異常判断装置によるシステム異常の結果の規制な
のかを規制解除装置を操作することによって即時に判断
することが可能であるから、当該ブーム駆動装置の規制
がブームが危険な作業域に有ることによる本来的な定格
作業範囲の逸脱による規制である場合は、作業者の規制
解除装置の操作によるも当該ブーム駆動規制装置による
ブーム駆動装置の解除は成されず規制状態はそのまま継
続されるので作業車の安全は十分に確保され、一方、当
該ブーム駆動装置の規制がシステム異常判断装置による
ブーム作動状態検出装置のシステム上の規制である場合
は当該ブーム駆動装置の規制を作業者の任意な意思にて
解除でき、従ってブーム作動状態検出装置のシステム上
の異常による規制の場合はブームを目的とする位置まで
駆動させて作業者を安全に地上に降ろすことができ、従
来の作業車のブーム駆動規制装置の解除装置に比べて非
常に安全性が高く効率の良い高所作業が行える等種々の
優れた効果を有する。As described in detail above, the present invention provides a boom operating state detecting device, and a boom rated working range computing device for computing a rated working range of the boom based on a detection signal from the boom operating state detecting device and rating data. , A system abnormality judging device for judging a system abnormality of the boom operation state detecting device, and each boom drive device is regulated based on a judgment signal of the boom rated work range calculating device or a judgment signal of the system abnormality judging device. Boom drive restricting device,
In an aerial work vehicle equipped with a boom drive device that drives each drive device of the boom based on a signal from the boom drive control device, according to the determination signal of the system abnormality determination device,
When the system is judged to be abnormal, the boom drive restriction device is configured to be provided with a restriction release device that can release the restriction of the boom drive device. Even if the boom drive device is regulated, whether the boom drive device is regulated due to deviation from the original rated work range as a result of normal detection by the boom operating state detection device, or system abnormality by the system abnormality determination device It is possible to determine immediately whether the regulation is the result of the above by operating the deregulation device.Therefore, the regulation of the boom drive device is restricted to the original rated work range due to the boom being in a dangerous work area. If the regulation is due to deviation, the boom drive control device may not If the regulation of the boom drive device is the system regulation of the boom operation state detection device by the system abnormality determination device, the work vehicle safety is sufficiently ensured because the regulation condition is continued without being removed. Can release the regulation of the boom drive device at the will of the operator.Therefore, in the case of regulation due to an abnormality in the system of the boom operating state detection device, the boom can be driven to the target position to keep the operator safe. It has various excellent effects such as being capable of being lowered to the ground and being extremely safe and efficient in performing work in high places as compared with the conventional release device for the boom drive restricting device of a work vehicle.
第1図は本考案に係る作業車のブーム駆動規制装置の解
除装置の概要を示すブロック図、第2図は従来の作業車
のブーム駆動規制装置の解除装置の概要を示すブロック
図である。 1……ブーム作動状態検出装置、2……ブーム定格作業
範囲演算装置、3……システム異常判断装置、4……ブ
ーム駆動規制装置、4a……規制解除装置、5……ブーム
駆動装置。FIG. 1 is a block diagram showing an outline of a release device of a boom drive restricting device for a work vehicle according to the present invention, and FIG. 2 is a block diagram showing an outline of a release device for a boom drive restricting device of a conventional work vehicle. 1 ... Boom operating state detection device, 2 ... Boom rated work range calculation device, 3 ... System abnormality determination device, 4 ... Boom drive restriction device, 4a ... Restriction release device, 5 ... Boom drive device.
Claims (1)
状態検出装置からの検出信号と定格データに基づいて当
該ブームの定格作業範囲を演算するブーム定格作業範囲
演算装置と、前記ブーム作動状態検出装置のシステム上
の異常を判断するシステム異常判断装置と、前記ブーム
定格作業範囲演算装置の演算信号乃至前記システム異常
判断装置の判断信号に基づいてブームの各駆動装置を規
制するブーム駆動規制装置と、該ブーム駆動規制装置の
信号に基づいてブームの各駆動装置を駆動するブーム駆
動装置とを備えた高所作業車に於いて、前記システム異
常判断装置の判断信号により、システムが異常と判断さ
れた場合に、前記ブーム駆動規制装置によるブーム駆動
装置の規制を解除することのできる規制解除装置を設け
たことを特徴とする作業車のブーム駆動規制装置の解除
装置。1. A boom operation state detection device, a boom rated work range calculation device for calculating a rated work range of the boom based on a detection signal from the boom operation state detection device and rating data, and the boom operation state detection device. A system abnormality judging device for judging an abnormality in the system of the device; and a boom drive restricting device for restricting each drive device of the boom based on a calculation signal of the boom rated work range calculating device or a judgment signal of the system abnormality judging device. In an aerial work vehicle equipped with a boom drive device that drives each drive device of the boom based on a signal from the boom drive control device, it is determined that the system is abnormal by the determination signal of the system abnormality determination device. In this case, a regulation release device for releasing the regulation of the boom drive device by the boom drive regulation device is provided. Releasing device of a work vehicle of the boom drive restricting device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6306589U JPH0647905Y2 (en) | 1989-05-31 | 1989-05-31 | Boom drive control device release device for work vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6306589U JPH0647905Y2 (en) | 1989-05-31 | 1989-05-31 | Boom drive control device release device for work vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH034198U JPH034198U (en) | 1991-01-16 |
JPH0647905Y2 true JPH0647905Y2 (en) | 1994-12-07 |
Family
ID=31592786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6306589U Expired - Lifetime JPH0647905Y2 (en) | 1989-05-31 | 1989-05-31 | Boom drive control device release device for work vehicle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0647905Y2 (en) |
-
1989
- 1989-05-31 JP JP6306589U patent/JPH0647905Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH034198U (en) | 1991-01-16 |
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