JPS60180294U - Swivel safety device for work equipment - Google Patents
Swivel safety device for work equipmentInfo
- Publication number
- JPS60180294U JPS60180294U JP6951184U JP6951184U JPS60180294U JP S60180294 U JPS60180294 U JP S60180294U JP 6951184 U JP6951184 U JP 6951184U JP 6951184 U JP6951184 U JP 6951184U JP S60180294 U JPS60180294 U JP S60180294U
- Authority
- JP
- Japan
- Prior art keywords
- switching
- swing motor
- swing
- signal
- switching valve
- 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
Links
Landscapes
- Jib Cranes (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の１実施例を示す回路図、第２図は、本
考案の１実施例を示す電気回路図である。
２；方向切換弁、１；旋回モータ、１８；安全限界装置
、１５；ソレノイド式切換弁、Ａ；切換位置検出回路、
Ｂ；記憶回路。FIG. 1 is a circuit diagram showing one embodiment of the present invention, and FIG. 2 is an electric circuit diagram showing one embodiment of the present invention. 2: Directional switching valve, 1: Swing motor, 18: Safety limit device, 15: Solenoid type switching valve, A: Switching position detection circuit,
B; Memory circuit.
Claims (1)
される旋回モー現を介して作業部を旋回自在に搭載する
と共に、前記作業部に作用する負荷が前記車体を転倒さ
せる限界に近づいたときに信号を出力する安全限界装置
を備えてなる作業機において、前記旋回モータを駆動す
るための駆動゛圧力を制御する油路にソレノイド式切換
弁を備えると共に、前記方向切換弁の切換位置を検出す
る切換位置検出回路と前記安全限界装置が信号を出力し
たときの前記旋回モータの旋回方向を記憶する記憶回路
を備え、前記ソレノイド式切換弁は、前記切換位置検出
回路及び前記記憶回路に関連して、前記方向切換弁が前
記安全限界装置が信号を出力したときの旋回モータの回
転方向と同方向に旋回モータを作動させる位置に位置す
るときには、前記駆動油圧力の発生を阻止し、前記方向
切換弁が前記安全限界装置が信号を出力したときの旋回
モータの回転方向と逆方向に旋回モータを作動させる位
置に位置するときには、前記駆動油圧力の発生を許容す
るように切換制御されるよう構成したことを特徴とする
作業機の旋回安全装置。A working part is mounted on the vehicle body so as to be able to swing freely through a swing mode whose rotation is controlled in the left and right directions by switching a directional control valve, and when the load acting on the working part approaches a limit that causes the vehicle body to overturn. In a work machine equipped with a safety limit device that outputs a signal to the directional control valve, a solenoid type switching valve is provided in an oil passage for controlling drive pressure for driving the swing motor, and a switching position of the directional switching valve is detected. The solenoid-type switching valve includes a switching position detection circuit for detecting a switching position and a storage circuit for storing a rotation direction of the swing motor when the safety limit device outputs a signal, and the solenoid-type switching valve is connected to the switching position detection circuit and the storage circuit. When the directional control valve is located at a position to operate the swing motor in the same direction as the rotation direction of the swing motor when the safety limit device outputs the signal, generation of the driving hydraulic pressure is prevented and the rotation direction is When the switching valve is located at a position where the swing motor is operated in a direction opposite to the rotational direction of the swing motor when the safety limit device outputs the signal, the switching is controlled to allow generation of the driving hydraulic pressure. A swing safety device for a work machine characterized by the following configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6951184U JPS60180294U (en) | 1984-05-11 | 1984-05-11 | Swivel safety device for work equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6951184U JPS60180294U (en) | 1984-05-11 | 1984-05-11 | Swivel safety device for work equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60180294U true JPS60180294U (en) | 1985-11-29 |
| JPH0415757Y2 JPH0415757Y2 (en) | 1992-04-08 |
Family
ID=30605252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6951184U Granted JPS60180294U (en) | 1984-05-11 | 1984-05-11 | Swivel safety device for work equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60180294U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51102857A (en) * | 1975-03-06 | 1976-09-10 | Tadano Tekkosho Kk | SENKAISEIGENSHINGOHATSUSEISOCHI |
| JPS58202292A (en) * | 1982-05-18 | 1983-11-25 | 株式会社タダノ | Preventive device for overload of construction machinery |
-
1984
- 1984-05-11 JP JP6951184U patent/JPS60180294U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51102857A (en) * | 1975-03-06 | 1976-09-10 | Tadano Tekkosho Kk | SENKAISEIGENSHINGOHATSUSEISOCHI |
| JPS58202292A (en) * | 1982-05-18 | 1983-11-25 | 株式会社タダノ | Preventive device for overload of construction machinery |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0415757Y2 (en) | 1992-04-08 |
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