JPH0781885A - Device for checking installation of outrigger in walking crane - Google Patents

Device for checking installation of outrigger in walking crane

Info

Publication number
JPH0781885A
JPH0781885A JP24852593A JP24852593A JPH0781885A JP H0781885 A JPH0781885 A JP H0781885A JP 24852593 A JP24852593 A JP 24852593A JP 24852593 A JP24852593 A JP 24852593A JP H0781885 A JPH0781885 A JP H0781885A
Authority
JP
Japan
Prior art keywords
outrigger
installation
work
detector
reaction force
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP24852593A
Other languages
Japanese (ja)
Other versions
JP3231512B2 (en
Inventor
Masamichi Ueda
雅通 上田
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
Komatsu MEC Corp
Original Assignee
Komatsu Ltd
Komatsu MEC Corp
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, Komatsu MEC Corp filed Critical Komatsu Ltd
Priority to JP24852593A priority Critical patent/JP3231512B2/en
Publication of JPH0781885A publication Critical patent/JPH0781885A/en
Application granted granted Critical
Publication of JP3231512B2 publication Critical patent/JP3231512B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE:To ensure that accidents such as tipping-over can be prevented during work by providing an arithmetic processing portion for determining whether or not all of outrigger reaction forces are above a specific value according to information from each detector and information inputted from an outrigger installation checking means. CONSTITUTION:Installation of an outrigger is started by the operation of an outrigger switch after a walking crane has been stopped at a predetermined place. During installation of the outrigger, the extended width of the outrigger is detected by an extended width detector 2 and displayed in a display unit 5 while the movement of the outrigger is checked. After the installation of the outrigger is complete, the operator controls an outrigger-installation checking input means 4 in order to check the installation, and then whether or not all of reaction forces inputted by a reaction force detector 3 are above a specific value is determined; when the forces are above the specific value, that is displayed in the display unit 5, while when they are less than the specific value, an alarm is issued from an alarm unit 6. Thus the installation of the outrigger is checked to prevent tipping-over during work.

Description

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

【0001】[0001]

【産業上の利用分野】この発明は過負荷防止装置を備
え、かつスライドおよびジャッキ可能なアウトリガを有
する移動式クレーンのアウトリガ設置確認装置に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outrigger installation confirmation device for a mobile crane equipped with an overload prevention device and having a slideable and jackable outrigger.

【0002】[0002]

【従来の技術】従来トラッククレーンのような移動式ク
レーンには、作業時車体の転倒を防止するアウトリガが
装備されている。このアウトリガは走行時は車幅内に格
納されていて、走行の支障とならないようになっている
が、作業時は運転室からのスイッチ操作により車体の側
方に張出され、かつアウトリガジャッキを伸長してフロ
ートを接地させることにより、車体の転倒を防止するよ
うに構成されている。
2. Description of the Related Art A conventional mobile crane such as a truck crane is equipped with an outrigger that prevents the vehicle body from tipping over during work. This outrigger is stored within the width of the vehicle when traveling, so that it does not interfere with traveling, but during work, it is extended to the side of the vehicle body by a switch operation from the cab and the outrigger jack is installed. By extending and grounding the float, the vehicle body is prevented from falling.

【0003】しかしアウトリガの張出し幅が不足した
り、フロートの接地が不完全な状態で作業を開始するこ
とがあり、その結果作業中車体が転倒するなどの事故が
しばしば発生している。かかる不具合を改善するため、
アウトリガの張出し量やフロートの接地状態を検出し
て、これらが不完全な場合運転者に警報するようにした
装置が、例えば実開昭62−110061号、実開平1
−115698号、実開平1−121067号、実開平
3−96260号公報などで提案されている。またアウ
トリガが垂直張出し操作したことを検出し、アウトリガ
が垂直されたときのみ確認スイッチの入力により、アウ
トリガの張出量検出信号に基づいたアウトリガ張出幅の
設定が行われるようにした装置が特開平5−10593
8号公報で提案されている。
However, the overrigger width of the outriggers may be insufficient, or the work may be started in a state where the ground contact of the float is incomplete, and as a result, accidents such as the overturning of the vehicle body often occur during the work. In order to improve such defects,
A device that detects the overhang amount of the outrigger and the ground contact state of the float and alerts the driver when these are incomplete is disclosed in, for example, Japanese Utility Model Publication No. 62-110061 and Japanese Utility Model Publication No.
No. 115698, No. 1-121067, No. 3-96260, and the like. In addition, a device that detects that the outrigger has extended vertically and sets the outrigger extension width based on the outrigger extension detection signal by inputting the confirmation switch only when the outrigger is vertically extended. Kaihei 5-10593
It is proposed in Japanese Patent No. 8.

【0004】[0004]

【発明が解決しようとする課題】しかし従来の検出装置
では、アウトリガの張出し幅やフロートの接地状態など
を個々に検出する構成のため、作業開始時確認作業が効
率よく行えないと共に、確認作業の途中でも作業が開始
できるため、確認作業の一部を忘れたり、省略したりし
て作業を開始することがあり、安全性が十分確保できな
いなどの不具合があった。
However, in the conventional detection device, since the overhanging width of the outrigger and the grounding state of the float are individually detected, the confirmation work at the start of work cannot be performed efficiently, and the confirmation work Since the work can be started even in the middle of the process, some of the confirmation work may be forgotten or omitted, and the work cannot be ensured sufficiently.

【0005】また接地の確認は接地検出器からの信号に
より自動検出しているため、運転者の意志が介在せず、
その結果接地検出器に故障などが発生しても、これに気
付かずに作業を開始して転倒事故を起こすなどの不具合
もあった。また特開平5−105938号公報の方法
は、アウトリガが本当に接地しているかどうかは検出で
きないため、アウトリガのフロートが接地されたかの確
認作業を行わないで、確認スイッチを操作した場合は作
業が開始できるため、安全性が十分確認されているとは
いい難い。この発明はかかる不具合を改善するためにな
されたもので、作業時の転倒事故などが確実に防止でき
るようにした移動式クレーンの過負荷防止装置を提供す
ることを目的とするものである。
Further, since the grounding confirmation is automatically detected by the signal from the grounding detector, the driver's will does not intervene.
As a result, even if the grounding detector failed, there was also a problem that the work started without noticing it and caused a fall accident. Further, since the method disclosed in Japanese Patent Laid-Open No. 5-105938 cannot detect whether the outrigger is actually grounded, the work can be started when the confirmation switch is operated without performing the confirmation work of whether the outrigger float is grounded. Therefore, it is hard to say that safety has been fully confirmed. The present invention has been made in order to improve such a problem, and an object of the present invention is to provide an overload prevention device for a mobile crane, which can surely prevent a fall accident during work.

【0006】[0006]

【課題を解決するための手段】この発明は上記目的を達
成するために、作業時車体の転倒を防止するアウトリガ
に、アウトリガ張出し幅検出器と、アウトリガ反力検出
器を設けた移動式クレーンにおいて、上記各検出器から
の情報を表示装置に表示し、かつ上記情報と、アウトリ
ガ設置確認手段より入力された情報よりアウトリガ反力
が全て規定値以上あるかを判定する演算処理部を設け、
かつアウトリガ反力が規定以上ある場合は、アウトリガ
設置完了と判定して、そのときのアウトリガ張出し幅に
基づいて過負荷防止制御のためのアウトリガ張出し幅設
定値を選択後、作業開始を可能にすると共に、アウトリ
ガ反力が規定値に達しない場合は、作業機の作動を制限
するようにしたものである。
In order to achieve the above object, the present invention provides a mobile crane having an outrigger overhang width detector and an outrigger reaction force detector provided on an outrigger for preventing the vehicle body from tipping over during work. , Displaying the information from each of the detectors on a display device, and providing an arithmetic processing unit for determining whether or not the outrigger reaction force is more than a specified value from the information input from the information and the outrigger installation confirmation means,
If the outrigger reaction force is more than the specified value, it is determined that the outrigger installation is complete, and after the outrigger extension width set value for overload prevention control is selected based on the outrigger extension width at that time, work can be started. At the same time, when the outrigger reaction force does not reach the specified value, the operation of the working machine is limited.

【0007】[0007]

【作用】上記構成によりアウトリガの設置を確認する操
作をしないとクレーン作業が開始できないため、アウト
リガの設置が不完全な状態で作業を開始したために生じ
る転倒事故などを未然に防止することができる。
With the above construction, the crane work cannot be started unless an operation for confirming the installation of the outrigger is started, so that a fall accident or the like caused by starting the work with the outrigger installed incompletely can be prevented.

【0008】[0008]

【実施例】この発明の一実施例を図1ないし図3に示す
図面を参照して詳述する。図1はアウトリガ過負荷防止
装置を有する移動式クレーンに実施されたアウトリガ設
置確認装置のブロック図で、この図で1は演算処理部を
示す。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings shown in FIGS. FIG. 1 is a block diagram of an outrigger installation confirmation device implemented in a mobile crane having an outrigger overload prevention device. In FIG. 1, reference numeral 1 denotes an arithmetic processing unit.

【0009】上記演算処理部1の入力側には、図示しな
いアウトリガの張出し幅を検出する張出し幅検出器2
と、アウトリガジャッキに作用する反力を検出する反力
検出器3及びアウトリガが設置されたのを確認するため
のアウトリガ設置確認手段4が接続されていて、これら
検出器2ないし3及びアウトリガ設置確認手段4よりそ
れぞれ情報が入力されるようになっている。また演算制
御部1の出力側には、表示装置5と、警報器6及びクレ
ーンの動作を制御する作業機油圧システム7が接続され
ている。
On the input side of the arithmetic processing unit 1, an overhang width detector 2 for detecting the overhang width of an outrigger (not shown).
And a reaction force detector 3 for detecting a reaction force acting on the outrigger jack and an outrigger installation confirmation means 4 for confirming that the outrigger is installed, and these detectors 2 to 3 and outrigger installation confirmation Information is input from each of the means 4. Further, the output side of the arithmetic control unit 1 is connected with a display device 5, an alarm device 6 and a working machine hydraulic system 7 for controlling the operation of the crane.

【0010】上記表示装置5は図示しない運転室などに
設置されていて、図2に示すようにアウトリガの張出し
幅を表示する表示部5aと、アウトリガジャッキに作用
する反力が規定以上になったときに点灯する表示部5b
が設けられている。このとき検出したアウトリガ反力値
をあわせて表示するようにしてもよい。
The display device 5 is installed in a driver's cab (not shown) or the like, and as shown in FIG. 2, the display portion 5a for displaying the overhang width of the outrigger and the reaction force acting on the outrigger jack have exceeded the prescribed values. Display unit 5b that lights up when
Is provided. The outrigger reaction force value detected at this time may be displayed together.

【0011】次に図3に示すフローチャートにより作用
を説明する。移動式クレーンを所定の場所へ停止させた
ら、アウトリガを設置すべく図示しないアウトリガ設置
スイッチを操作すると、アウトリガの設置が開始され
る。アウトリガの設置中は、アウトリガの張出し幅が張
出し幅検出器2で検出されて表示装置5の表示部5aに
表示されると共に、図3に示すフローチャートのステッ
プ101でアウトリガの動作がチェックされ、ステップ
102へ進む。
Next, the operation will be described with reference to the flow chart shown in FIG. When the mobile crane is stopped at a predetermined location, the outrigger installation switch (not shown) is operated to install the outrigger, and the outrigger installation is started. During installation of the outrigger, the overhang width of the outrigger is detected by the overhang width detector 2 and displayed on the display unit 5a of the display device 5, and the operation of the outrigger is checked in step 101 of the flowchart shown in FIG. Proceed to 102.

【0012】アウトリガの設置が完了したら、運転者は
設置確認のためにアウトリガ設置確認入力手段4を操作
すると、ステップ103へ進んで、反力検出器103よ
り入力される反力が全て規定値以上かが判定され、規定
値以上であれば表示装置5の表示部5bに表示され、規
定値に達していない場合は、ステップ104へ進んで警
報器6より警報が発せられる。
After the installation of the outriggers is completed, the driver operates the outrigger installation confirmation input means 4 to confirm the installation, and the process proceeds to step 103, in which all the reaction forces input from the reaction force detector 103 are equal to or more than the specified values. It is determined whether or not the value is greater than or equal to the specified value, and the value is displayed on the display portion 5b of the display device 5. If the value has not reached the specified value, the process proceeds to step 104, and the alarm device 6 issues an alarm.

【0013】これによって運転者はアウトリガの設置が
不完全であることを認識することになる。もしこれに気
付かずに作業を開始しようとしても、ステップ107で
作業機油圧システム7に作業機作動制限信号が出力され
ているため、クレーン作業を開始することができない。
As a result, the driver recognizes that the outrigger is not completely installed. Even if the operator tries to start the work without noticing this, the crane work cannot be started because the work machine operation restriction signal is output to the work machine hydraulic system 7 in step 107.

【0014】またアウトリガの設置作業を再度実行し
て、アウトリガジャッキの反力が全て規定値以上になる
と、アウトリガの設置が完了してステップ105へ進
み、そのときのアウトリガが張出し幅をアウトリガ張出
し幅検出器2より取込んで、この値に基づいて過負荷防
止装置(図示せず)を制御するためのアウトリガ張出し
幅設定値が自動選択される。その後ステップ106へ進
んで作業状態設定信号の入力が可能となるため、クレー
ン作業を開始することができるようになる。以上のよう
にアウトリガが設置されたのを運転者が確認し、確認操
作をしないとクレーン作業が開始できないため、作業中
の転倒事故を確実に防止することができるようになる。
When the outrigger installation work is performed again and the reaction forces of the outrigger jacks are all above the specified values, the outrigger installation is completed and the routine proceeds to step 105, where the outrigger at that time changes the overhang width to the outrigger overhang width. An outrigger extension width set value for controlling the overload prevention device (not shown) is automatically selected based on this value, which is fetched from the detector 2. After that, the routine proceeds to step 106, where the work state setting signal can be input, so that the crane work can be started. As described above, if the driver confirms that the outriggers are installed and the confirmation operation is not performed, the crane work cannot be started, so that the fall accident during the work can be reliably prevented.

【0015】一方図4ないし図6は、アウトリガの張出
し幅及び反力情報の他に、車体フレームの傾斜を傾斜検
出器9により検出して演算処理部1へ取込むようにした
別の実施例を示すもので、次にこれを説明する。なお車
体フレームの傾斜検出以外は上記第1実施例と同様のた
め、その説明は省略する。
On the other hand, FIGS. 4 to 6 show another embodiment in which, in addition to the overhanging width of the outrigger and the reaction force information, the inclination of the vehicle body frame is detected by the inclination detector 9 and taken into the arithmetic processing unit 1. Which will be described next. The description is omitted because it is the same as the first embodiment except for detecting the inclination of the vehicle body frame.

【0016】図6のフローチャートのステップ103で
アウトリガ設置反力が全て規定値以上と判定されると、
ステップ103′へ進んで車体フレームの傾斜角は規定
範囲内かが判定され、同時に表示装置5にその角度が表
示される。表示装置5には、ブームの方向を示す表示部
5cと、車体フレームの前後方向の傾斜を示す表示部5
d及び左右方向の傾斜を示す表示部5eが設けられてい
て、車体フレームの前後及び左右方向の傾斜が表示でき
るようになっている。
When it is determined in step 103 of the flowchart of FIG. 6 that the outrigger installation reaction forces are all equal to or greater than the specified values,
In step 103 ', it is determined whether the inclination angle of the vehicle body frame is within the specified range, and the angle is displayed on the display device 5 at the same time. The display device 5 includes a display unit 5c indicating the direction of the boom and a display unit 5 indicating the inclination of the vehicle body frame in the front-rear direction.
A display portion 5e indicating the inclination in the d direction and the left-right direction is provided so that the inclination in the front-rear direction and the left-right direction of the body frame can be displayed.

【0017】もしステップ103′で車体フレームの傾
斜角が規定範囲外と判定されると、ステップ104′へ
進んで警報器6より警報が発生されるので、車体フレー
ムの傾斜が規定範囲となるようにアウトリガを再設置す
る。そして車体フレームの傾斜が規定範囲内と判定され
たところでステップ105へ進み、以下第1実施例と同
様な処理となる。
If it is determined in step 103 'that the inclination angle of the vehicle body frame is out of the specified range, the process proceeds to step 104' and an alarm is issued from the alarm device 6, so that the inclination of the vehicle body frame falls within the specified range. Reinstall the outrigger on. Then, when it is determined that the inclination of the vehicle body frame is within the specified range, the routine proceeds to step 105, where the same processing as in the first embodiment is performed.

【0018】[0018]

【発明の効果】この発明は以上詳述したように、アウト
リガ設置後運転者が設置確認操作を行うと、アウトリガ
ジャッキに作用する反力が全て規定値以上になっている
かが判定され、規定値に達していない場合、表示と警報
により運転者に知らせるようにしたことから、アウトリ
ガの設置状態が容易に確認できる。
As described above in detail, according to the present invention, when the driver performs the installation confirmation operation after the outrigger installation, it is determined whether or not the reaction forces acting on the outrigger jacks are all over the specified values. If not, the driver is informed by the display and the alarm, so that the installation state of the outrigger can be easily confirmed.

【0019】またアウトリガの設置確認作業に運転者が
介在するため、信頼性が向上すると共に、アウトリガが
完全に設置されないとクレーン作業が開始できないた
め、アウトリガの設置が不完全なために発生する転倒事
故などを確実に防止することができる。
Further, since the operator intervenes in the installation confirmation work of the outriggers, the reliability is improved and the crane work cannot be started unless the outriggers are completely installed. Accidents can be reliably prevented.

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

【図1】この発明の第1実施例になる移動式クレーンの
アウトリガ設置確認装置のブロック図である。
FIG. 1 is a block diagram of an outrigger installation confirmation device for a mobile crane according to a first embodiment of the present invention.

【図2】この発明の第1実施例になる移動式クレーンの
アウトリガ設置確認装置に設けられた表示装置の正面図
である。
FIG. 2 is a front view of a display device provided in the outrigger installation confirmation device of the mobile crane according to the first embodiment of the present invention.

【図3】この発明の第1実施例になる移動式クレーンの
アウトリガ設置確認装置の作用を示すフローチャートで
ある。
FIG. 3 is a flowchart showing the operation of the outrigger installation confirmation device for the mobile crane according to the first embodiment of the present invention.

【図4】この発明の第2実施例になる移動式クレーンの
アウトリガ設置確認装置のブロック図である。
FIG. 4 is a block diagram of an outrigger installation confirmation device for a mobile crane according to a second embodiment of the present invention.

【図5】この発明の第2実施例になる移動式クレーンの
アウトリガ設置確認装置に設けられた表示装置の正面図
である。
FIG. 5 is a front view of a display device provided in the outrigger installation confirmation device of the mobile crane according to the second embodiment of the present invention.

【図6】この発明の第2実施例になる移動式クレーンの
アウトリガ設置確認装置の作用を示すフローチャートで
ある。
FIG. 6 is a flowchart showing the operation of the outrigger installation confirmation device for a mobile crane according to the second embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 演算処理部 2 アウトリガ張出し幅検出器 3 アウトリガ反力検出器 4 アウトリガ設置確認入力手段 5 表示装置 1 Arithmetic processing unit 2 Outrigger overhang width detector 3 Outrigger reaction force detector 4 Outrigger installation confirmation input means 5 Display device

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 作業時車体の転倒を防止するアウトリガ
に、アウトリガ張出し幅検出器2と、アウトリガ反力検
出器3を設けた移動式クレーンにおいて、上記各検出器
2、3からの情報を表示装置5に表示し、かつ上記情報
と、アウトリガ設置確認手段4より入力された情報より
アウトリガ反力が全て規定値以上あるかを判定する演算
処理部1を設け、かつアウトリガ反力が規定以上ある場
合は、アウトリガ設置完了と判定して、そのときのアウ
トリガ張出し幅に基づいて過負荷防止制御のためのアウ
トリガ張出し幅設定値を選択後、作業開始を可能にする
と共に、アウトリガ反力が規定値に達しない場合は、作
業機の作動を制限してなる移動式クレーンのアウトリガ
設置確認装置。
1. A mobile crane in which an outrigger overhang width detector 2 and an outrigger reaction force detector 3 are provided on an outrigger that prevents the vehicle body from falling during work, and information from the above detectors 2 and 3 is displayed on the mobile crane. An arithmetic processing unit 1 is provided which is displayed on the device 5 and determines whether all outrigger reaction forces are equal to or more than a specified value based on the above information and the information input from the outrigger installation confirmation means 4, and the outrigger reaction force is equal to or more than the specified value. In this case, it is determined that the outrigger installation is completed, and after selecting the outrigger extension width set value for overload prevention control based on the outrigger extension width at that time, work can be started and the outrigger reaction force is set to the specified value. If not, the outrigger installation confirmation device for mobile cranes that limits the operation of the work equipment.
JP24852593A 1993-09-10 1993-09-10 Outrigger installation confirmation device for mobile cranes Expired - Fee Related JP3231512B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24852593A JP3231512B2 (en) 1993-09-10 1993-09-10 Outrigger installation confirmation device for mobile cranes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24852593A JP3231512B2 (en) 1993-09-10 1993-09-10 Outrigger installation confirmation device for mobile cranes

Publications (2)

Publication Number Publication Date
JPH0781885A true JPH0781885A (en) 1995-03-28
JP3231512B2 JP3231512B2 (en) 2001-11-26

Family

ID=17179486

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24852593A Expired - Fee Related JP3231512B2 (en) 1993-09-10 1993-09-10 Outrigger installation confirmation device for mobile cranes

Country Status (1)

Country Link
JP (1) JP3231512B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006282301A (en) * 2005-03-31 2006-10-19 Aichi Corp Safety device for outrigger
JP2010159148A (en) * 2009-01-09 2010-07-22 Tadano Ltd Jack reaction display device of work vehicle and work vehicle
JP2020023374A (en) * 2018-08-06 2020-02-13 株式会社タダノ Outrigger device and working vehicle with outrigger device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006282301A (en) * 2005-03-31 2006-10-19 Aichi Corp Safety device for outrigger
JP2010159148A (en) * 2009-01-09 2010-07-22 Tadano Ltd Jack reaction display device of work vehicle and work vehicle
JP2020023374A (en) * 2018-08-06 2020-02-13 株式会社タダノ Outrigger device and working vehicle with outrigger device

Also Published As

Publication number Publication date
JP3231512B2 (en) 2001-11-26

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