JPH0273214U - - Google Patents
Info
- Publication number
- JPH0273214U JPH0273214U JP15398388U JP15398388U JPH0273214U JP H0273214 U JPH0273214 U JP H0273214U JP 15398388 U JP15398388 U JP 15398388U JP 15398388 U JP15398388 U JP 15398388U JP H0273214 U JPH0273214 U JP H0273214U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- switch
- release switch
- mechatronic
- regulator
- 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
- 238000010276 construction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Flow Control (AREA)
- Control Of Fluid Pressure (AREA)
Description
第１図はこの考案にかかるレギユレータ制御用
電気回路をそなえた作業機用リリーフ回路図、第
２図は作業機を取付けた油圧シヨベルの側面図、
第３図は従来技術電気回路をそなえた作業機用リ
リーフ回路図である。
２……破砕機（作業機）、５……油圧アクチユ
エータ、６，４５……電気回路、７，４６……コ
ントローラ、８……圧力スイツチ、１３，１４…
…可変ポンプ、１５……パイロツトポンプ、１６
，１６′……レギユレータ、１７……電磁比例弁
、２９……メイン圧取出しバルブ、４７……解除
スイツチ、４８，４９……レジスタ、５０……リ
レー。
Fig. 1 is a relief circuit diagram for a working machine equipped with an electric circuit for controlling the regulator according to this invention, Fig. 2 is a side view of a hydraulic excavator with the working machine attached;
FIG. 3 is a relief circuit diagram for a working machine equipped with a conventional electric circuit. 2... Crusher (work machine), 5... Hydraulic actuator, 6, 45... Electric circuit, 7, 46... Controller, 8... Pressure switch, 13, 14...
...Variable pump, 15...Pilot pump, 16
, 16'...Regulator, 17...Solenoid proportional valve, 29...Main pressure take-off valve, 47...Release switch, 48, 49...Register, 50...Relay.
Claims (1)
機の方向切換弁と、メイン圧取出しバルブとを連
通する圧油供給油路に対して圧力スイツチを配設
し、その圧力スイツチの基接点と、可変ポンプ用
レギユレータの電磁比例弁とをコントローラを介
して接続し、上記作業機用油圧アクチユエータの
作動中にその油圧アクチユエータ用リリーフ弁が
リリーフする時点付近の圧油供給油路内油圧によ
り圧力スイツチを切換作動、かつその切換作動信
号にもとづいて上記コントローラから出力される
一定電流をレギユレータの電磁比例弁に通電し、
ポンプ吐出流量を減少せしめるようにしたリリー
フ回路において、上記コントローラと電磁比例弁
とを連通する電路にメカトロ用解除スイツチを介
設し、また上記圧力スイツチの基接点と解除スイ
ツチとを連通する電路にレジスタを並列に介設し
、かつそのレジスタのうち一方のレジスタと圧力
スイツチ基接点とを連通する電路にリレーを設け
、上記解除スイツチをメカトロ解除位置に切換操
作したときコントローラからの出力信号を遮断可
能に設定するとともに、上記リレー、レジスタ、
解除スイツチを通じてレギユレータの電磁比例弁
に対して、解除スイツチ切換操作前のメカトロ操
作作動時と同等の一定電流を流通可能に構成した
ことを特徴とするレギユレータ制御用電気回路。 A pressure switch is installed on the pressure oil supply line that communicates the directional control valve of the work equipment attached to the work attachment of the construction machine and the main pressure take-off valve, and the base point of the pressure switch and the variable pump Connecting the electromagnetic proportional valve of the regulator via a controller, and switching the pressure switch by the hydraulic pressure in the pressure oil supply oil path around the time when the relief valve for the hydraulic actuator relieves during the operation of the hydraulic actuator for the working machine, and energizing the electromagnetic proportional valve of the regulator with a constant current output from the controller based on the switching operation signal,
In the relief circuit designed to reduce the pump discharge flow rate, a mechatronic release switch is interposed in the electrical line communicating between the controller and the electromagnetic proportional valve, and a mechatronic release switch is provided in the electrical line communicating between the base contact of the pressure switch and the release switch. Resistors are interposed in parallel, and a relay is provided in the electrical path that communicates one of the registers with the pressure switch base point, and when the release switch is switched to the mechatronic release position, the output signal from the controller is cut off. In addition to setting the above relays, registers,
An electric circuit for controlling a regulator, characterized in that a constant current equivalent to that during mechatronic operation before switching the release switch can be passed through the electromagnetic proportional valve of the regulator through the release switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15398388U JPH0534018Y2 (en) | 1988-11-26 | 1988-11-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15398388U JPH0534018Y2 (en) | 1988-11-26 | 1988-11-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0273214U true JPH0273214U (en) | 1990-06-05 |
| JPH0534018Y2 JPH0534018Y2 (en) | 1993-08-30 |
Family
ID=31430306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15398388U Expired - Lifetime JPH0534018Y2 (en) | 1988-11-26 | 1988-11-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0534018Y2 (en) |
-
1988
- 1988-11-26 JP JP15398388U patent/JPH0534018Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0534018Y2 (en) | 1993-08-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0255642B2 (en) | ||
| JPH0273214U (en) | ||
| JPH01120562U (en) | ||
| JPH0619165B2 (en) | Work vehicle | |
| JPS62196258U (en) | ||
| JPH0245322Y2 (en) | ||
| JP2538713Y2 (en) | Hydraulic circuit of small excavator | |
| JP2503329Y2 (en) | Automatic boost circuit of hydraulic circuit | |
| JPS6441702U (en) | ||
| JPH0351201U (en) | ||
| JPH0329551U (en) | ||
| JPH0165903U (en) | ||
| JPH0369752U (en) | ||
| JPH032061U (en) | ||
| JPS61202552U (en) | ||
| JPH0187303U (en) | ||
| JPH0289050U (en) | ||
| JPH0582999U (en) | Work vehicle power saving device | |
| JPH0251704U (en) | ||
| JPH0218485U (en) | ||
| JPH0250457U (en) | ||
| JPH02283902A (en) | Hydraulic circuit | |
| JPH02120547U (en) | ||
| JPH02135779U (en) | ||
| JPS6336703U (en) |