JPH0612069Y2 - Alarm device for construction and cargo handling machines - Google Patents
Alarm device for construction and cargo handling machinesInfo
- Publication number
- JPH0612069Y2 JPH0612069Y2 JP5645389U JP5645389U JPH0612069Y2 JP H0612069 Y2 JPH0612069 Y2 JP H0612069Y2 JP 5645389 U JP5645389 U JP 5645389U JP 5645389 U JP5645389 U JP 5645389U JP H0612069 Y2 JPH0612069 Y2 JP H0612069Y2
- Authority
- JP
- Japan
- Prior art keywords
- turning
- alarm device
- oil passage
- swing
- construction
- 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
Description
【考案の詳細な説明】 ［産業上の利用分野］ この考案は、油圧ショベル等上部旋回体と下部走行体を
有する建設・荷役作業用機械において、上部旋回体が旋
回可能状態にあるとき周囲に警報を発し注意を喚起する
ことができる警報装置に関するものである。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a construction / cargo work machine having an upper revolving structure such as a hydraulic excavator and a lower traveling structure. The present invention relates to an alarm device capable of issuing an alarm and calling attention.
［従来の技術］ 油圧ショベル等上部旋回体と下部走行体を有する建設・
荷役作業用機械において、上部旋回体の旋回操作の際周
囲に注意警報を発するための警報装置としては、旋回駆
動系への入力指令を検出し該検出信号により電源回路を
閉路して警報装置を作動させるようしたものが公知であ
る。（特開昭６３−６６０９２公報参照） ［考案が解決しようとする課題］ 上記従来技術によれば、警報装置が作動するのは、旋回
駆動系へ入力指令を与えた時のみ、すなわち旋回操作レ
バーを操作した時のみである。[Prior Art] Construction having an upper revolving structure and a lower traveling structure such as a hydraulic excavator
In a cargo handling machine, as an alarm device for issuing a caution alarm to the surroundings during a swing operation of an upper swing body, an alarm device is provided by detecting an input command to a swing drive system and closing a power circuit by the detection signal. Those which are adapted to operate are known. (See Japanese Patent Laid-Open No. 63-66092) [Problems to be Solved by the Invention] According to the above conventional technique, the alarm device operates only when an input command is given to the swing drive system, that is, the swing operation lever. Only when you operate.
したがって、旋回駆動系に対し入力指令は発せられてい
ないが旋回ブレーキは解除されているという状態の時に
は、警報装置は作動しない。Therefore, the alarm device is not activated when the input command is not issued to the turning drive system but the turning brake is released.
ところが、旋回ブレーキは旋回駆動系以外の操作レバー
によって解除されることもあり、また、スイッチ等に連
動して自動的に又は意図的に解除される場合がある。However, the turning brake may be released by an operation lever other than the turning drive system, and may be released automatically or intentionally in conjunction with a switch or the like.
このような場合、上部旋回体は旋回可能でありながら警
報は発せられないことになる。そのため例えば、シリン
ダ操作レバーによって旋回ブレーキが解除された状態で
掘削作業を行った場合、掘削反力等により上部旋回体が
旋回させられると、該機械の近傍で作業する作業員が、
上部旋回体と障害物との間に挟まれるという不測の事故
を招く危険がある。In such a case, the upper revolving structure can rotate but the alarm is not issued. Therefore, for example, when excavation work is performed in a state where the swing brake is released by the cylinder operation lever, when the upper swing body is swung by the excavation reaction force or the like, a worker who works near the machine,
There is a risk of accidental accidents such as being caught between the upper swing structure and an obstacle.
この考案は、上記のような危険を回避し安全性を一層向
上させするため、旋回操作レバーを操作した時のみなら
ず、上部旋回体が旋回可能な状態となった時、直ちに旋
回警報を発することができるような警報装置を提供する
ことを課題とするものである。In order to avoid the above dangers and further improve safety, the present invention immediately issues a turning warning not only when the turning operation lever is operated but also when the upper turning body is turned. It is an object of the present invention to provide an alarm device that can do so.
［課題を解決するための手段］ この考案は、上記課題解決の手段を提供するものであっ
て、旋回警報装置１５作動用圧力スイッチ２０に対する
圧力取出油路１０を、旋回ブレーキ解除弁９の下流側油
路１６に接続したことを特徴とする建設・荷役作業用機
械の旋回警報装置を考案要旨とするものである。[Means for Solving the Problem] The present invention provides a means for solving the above problem, in which the pressure take-out oil passage 10 for the pressure switch 20 for operating the turning alarm device 15 is provided downstream of the turning brake release valve 9. A turning alarm device for a construction / cargo handling machine, which is characterized by being connected to a side oil passage 16, is a gist of the invention.
［実施例］ 以下本考案の実施例を図を用いて説明する。[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.
図中１はメインポンプ、２はパイロットポンプ、３は旋
回用切換弁、４はシリンダ用切換弁、５ａ，５ｂ，５ｃ
はシャトル弁、６は旋回用操作レバー、７はシリンダ用
操作レバーである。In the figure, 1 is a main pump, 2 is a pilot pump, 3 is a swing switching valve, 4 is a cylinder switching valve, 5a, 5b, 5c.
Is a shuttle valve, 6 is a turning operation lever, and 7 is a cylinder operation lever.
旋回用操作弁６を操作すると、パイロット油路２３，２
４，を介して旋回用切換弁３が左右に切り換えられ、旋
回モータ２２を駆動することができ、その際同時に、パ
イロット油路２５，１８，１９を介して旋回ブレーキ解
除弁９が作動し、その下流側油路１６に圧油が流れ旋回
ブレーキ２１が解除される。When the turning operation valve 6 is operated, the pilot oil passages 23, 2
The turning switching valve 3 is switched to the left or right via 4, so that the turning motor 22 can be driven, and at the same time, the turning brake release valve 9 operates via the pilot oil passages 25, 18, 19. Pressure oil flows in the downstream oil passage 16 and the swing brake 21 is released.
また、シリンダ用操作弁７を操作するとシリンダ用切換
弁４が切り換えられ、シリンダ８が伸縮し掘削等の作業
をすることができ、その際同時にパイロット油路２６，
１７，１９を介して旋回ブレーキ解除弁９が作動し、そ
の下流側油路１６に圧油が流れ旋回ブレーキ２１が解除
される。Further, when the cylinder operating valve 7 is operated, the cylinder switching valve 4 is switched, and the cylinder 8 is expanded and contracted so that work such as excavation can be performed. At the same time, the pilot oil passage 26,
The swing brake release valve 9 is actuated via 17 and 19, pressure oil flows through the oil passage 16 on the downstream side thereof, and the swing brake 21 is released.
１０は、旋回警報装置１５作動用の圧力スイッチ２０に
対する圧力取出油路であって、旋回ブレーキ解除弁９の
下流側油路１６と前記圧力スイッチ２０のパイロットポ
ート間を結んで接続されている。Reference numeral 10 denotes a pressure take-out oil passage for the pressure switch 20 for operating the turning alarm device 15, which is connected to connect a downstream oil passage 16 of the turning brake release valve 9 and a pilot port of the pressure switch 20.
警報装置１５は、回転灯１１，フラッシャランプ１２，
フラッシャユニット１３，ブザー１４等から成り、前記
圧力取出油路１０に圧油が流れ圧力スイッチ２０が閉路
したとき電源バッテリ２７から電流が流れ作動するよう
になっている。The alarm device 15 includes a revolving light 11, a flasher lamp 12,
It comprises a flasher unit 13, a buzzer 14, etc., and when the pressure oil flows into the pressure extraction oil passage 10 and the pressure switch 20 is closed, a current is supplied from the power supply battery 27 to operate.
［作用］ 本考案は以上のような構成であって、旋回警報装置１５
作動用圧力スイッチ２０に対する圧力取出油路１０が、
旋回ブレーキ解除弁９の下流側油路１６に接続されてい
るから、旋回用操作レバー６を操作して旋回ブレーキ解
除弁９が作動したときは勿論、シリンダ用操作弁７の操
作に連動して旋回ブレーキ解除弁９が作動したとき、そ
の他図示されないスイッチ等によって旋回ブレーキ解除
弁９が作動し、その下流側油路１６に圧力が立ったと
き、換言すれば旋回ブレーキ２１が解除され上部旋回体
が旋回可能となったときには、圧力取出油路１０を介し
て圧力スイッチ２０がONし警報装置１５が作動する。[Operation] The present invention is configured as described above, and has a turning warning device 15
The pressure extraction oil passage 10 for the operation pressure switch 20 is
Since it is connected to the oil passage 16 on the downstream side of the swing brake release valve 9, when the swing brake release valve 9 is operated by operating the swing operation lever 6, it is of course interlocked with the operation of the cylinder operation valve 7. When the swing brake release valve 9 is activated, the swing brake release valve 9 is activated by a switch or the like (not shown), and pressure is applied to the downstream oil passage 16, in other words, the swing brake 21 is released and the upper swing body is rotated. When it becomes possible to turn, the pressure switch 20 is turned on via the pressure extraction oil passage 10 and the alarm device 15 is activated.
なお、圧力スイッチ２０がONしている間継続して警告
音，警告灯等を作動させる必要がない場合には、時限タ
イマコントローラ等により圧力スイッチ２０がONした後
一定時間のみ作動させ、以後停止させるようにすること
もできる。If it is not necessary to continuously operate the warning sound, the warning light, etc. while the pressure switch 20 is ON, the pressure switch 20 is operated by the timed timer controller etc. for a certain period of time after turning ON, and then stopped. You can choose to let them do it.
［効果］ 本考案によれば、旋回警報装置１５作動用圧力スイッチ
２０に対する圧力取出油路１０を、旋回ブレーキ解除弁
９の下流側油路１６に接続したことにより、旋回操作レ
バーを操作した時のみならず、上部旋回体が旋回可能な
状態となった時点で直ちに旋回警報を発することができ
るから、安全性向上のため極めて有用である。[Effect] According to the present invention, when the pressure take-out oil passage 10 for the pressure switch 20 for operating the turning alarm device 15 is connected to the oil passage 16 on the downstream side of the turning brake release valve 9, the turning operation lever is operated. Not only that, the turning warning can be issued immediately when the upper-part turning body is ready to turn, which is extremely useful for improving safety.
図面は本考案の回路図を示す。 ９……旋回ブレーキ解除弁 １０……圧力取出油路 １５……旋回警報装置 １６……旋回ブレーキ解除弁の下流側油路 ２０……圧力スイッチ The drawing shows the circuit diagram of the present invention. 9 ... Swing brake release valve 10 ... Pressure extraction oil passage 15 ... Swing alarm device 16 ... Oil passage downstream of swing brake release valve 20 ... Pressure switch
Claims (1)
圧力取出油路を、旋回ブレーキ解除弁の下流側油路に接
続したことを特徴とする建設・荷役作業用機械の旋回警
報装置。1. A turning warning device for a construction / cargo handling machine, wherein a pressure take-out oil passage for a turning alarm device operating pressure switch is connected to an oil passage downstream of a turning brake release valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5645389U JPH0612069Y2 (en) | 1989-05-18 | 1989-05-18 | Alarm device for construction and cargo handling machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5645389U JPH0612069Y2 (en) | 1989-05-18 | 1989-05-18 | Alarm device for construction and cargo handling machines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02148059U JPH02148059U (en) | 1990-12-17 |
| JPH0612069Y2 true JPH0612069Y2 (en) | 1994-03-30 |
Family
ID=31580289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5645389U Expired - Lifetime JPH0612069Y2 (en) | 1989-05-18 | 1989-05-18 | Alarm device for construction and cargo handling machines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0612069Y2 (en) |
-
1989
- 1989-05-18 JP JP5645389U patent/JPH0612069Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02148059U (en) | 1990-12-17 |
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