JPS6424197U - - Google Patents

Info

Publication number
JPS6424197U
JPS6424197U JP11958287U JP11958287U JPS6424197U JP S6424197 U JPS6424197 U JP S6424197U JP 11958287 U JP11958287 U JP 11958287U JP 11958287 U JP11958287 U JP 11958287U JP S6424197 U JPS6424197 U JP S6424197U
Authority
JP
Japan
Prior art keywords
solenoid valve
excavator
voltage
electric motor
load
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
JP11958287U
Other languages
Japanese (ja)
Other versions
JPH053596Y2 (en
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 filed Critical
Priority to JP1987119582U priority Critical patent/JPH053596Y2/ja
Publication of JPS6424197U publication Critical patent/JPS6424197U/ja
Application granted granted Critical
Publication of JPH053596Y2 publication Critical patent/JPH053596Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案に係る掘削機の負荷制御装置の
一実施例を示す構成図、第２図は本実施例による
負荷制御手段を示すブロツク図、第３図は本考案
の他の実施例を示す構成図である。 １，２，３……油圧シリンダ、１１，２３……
油圧ポンプ、１２，２４……電磁弁、１７……電
動機、１９……検流器、２０……電流電圧変換器
、２１……比較回路、２２……電磁弁制御回路。 Fig. 1 is a block diagram showing one embodiment of the load control device for an excavator according to the present invention, Fig. 2 is a block diagram showing the load control means according to the present embodiment, and Fig. 3 is another embodiment of the present invention. FIG. 1, 2, 3... Hydraulic cylinder, 11, 23...
Hydraulic pump, 12, 24... Solenoid valve, 17... Electric motor, 19... Current voltage converter, 21... Comparison circuit, 22... Solenoid valve control circuit.

Claims (1)

【実用新案登録請求の範囲】 (1) 複数個のピツクが配設された回転ドラムを
減速機を介して回転駆動する電動機と、前記回転
ドラムをそれぞれ旋回及び俯仰させる油圧シリン
ダと、該油圧シリンダに圧油を供給する油圧ポン
プとを具備した掘削機の電動機にかかる負荷を制
御する負荷制御装置において、前記電動機の負荷
電流を検出する検流器と、該負荷電流を電圧に変
換する電流電圧変換器と、検出された電圧と設定
された電圧とを比較する比較回路と、該比較回路
による検出値により前記油圧シリンダへの圧油を
供給する電磁弁の制御を行なう電磁弁制御回路と
を設けたことを特徴とする掘削機の負荷制御装置
。 (2) 油圧ポンプは可変ポンプであり、電磁弁は
該可変ポンプの吐出量を増減させる電磁比例弁で
あることを特徴とする実用新案登録請求の範囲第
１項記載の掘削機の負荷制御装置。[Claims for Utility Model Registration] (1) An electric motor that rotationally drives a rotating drum on which a plurality of picks are arranged via a reduction gear, a hydraulic cylinder that rotates and raises the rotating drum, and the hydraulic cylinder. A load control device for controlling a load applied to an electric motor of an excavator, which is equipped with a hydraulic pump for supplying pressure oil to an excavator, comprising: a galvanometer for detecting a load current of the electric motor; and a current voltage for converting the load current into a voltage. A converter, a comparison circuit that compares the detected voltage and a set voltage, and a solenoid valve control circuit that controls a solenoid valve that supplies pressure oil to the hydraulic cylinder based on the detected value by the comparison circuit. A load control device for an excavator, characterized in that: (2) The load control device for an excavator according to claim 1, wherein the hydraulic pump is a variable pump, and the solenoid valve is a proportional solenoid valve that increases or decreases the discharge amount of the variable pump. .
JP1987119582U 1987-08-04 1987-08-04 Expired - Lifetime JPH053596Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987119582U JPH053596Y2 (en) 1987-08-04 1987-08-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987119582U JPH053596Y2 (en) 1987-08-04 1987-08-04

Publications (2)

Publication Number Publication Date
JPS6424197U true JPS6424197U (en) 1989-02-09
JPH053596Y2 JPH053596Y2 (en) 1993-01-28

Family

ID=31364936

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987119582U Expired - Lifetime JPH053596Y2 (en) 1987-08-04 1987-08-04

Country Status (1)

Country Link
JP (1) JPH053596Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5869927A (en) * 1981-10-21 1983-04-26 Nippon Sharyo Seizo Kaisha Ltd Method and device for housing leader of pile driver

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5344842U (en) * 1976-09-20 1978-04-17
JPS5585190U (en) * 1978-12-06 1980-06-12

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5344842U (en) * 1976-09-20 1978-04-17
JPS5585190U (en) * 1978-12-06 1980-06-12

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5869927A (en) * 1981-10-21 1983-04-26 Nippon Sharyo Seizo Kaisha Ltd Method and device for housing leader of pile driver
JPH0216411B2 (en) * 1981-10-21 1990-04-17 Nippon Sharyo Seizo Kk

Also Published As

Publication number Publication date
JPH053596Y2 (en) 1993-01-28

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