JPS59160669U - Construction machinery safety equipment - Google Patents

Construction machinery safety equipment

Info

Publication number
JPS59160669U
JPS59160669U JP5593783U JP5593783U JPS59160669U JP S59160669 U JPS59160669 U JP S59160669U JP 5593783 U JP5593783 U JP 5593783U JP 5593783 U JP5593783 U JP 5593783U JP S59160669 U JPS59160669 U JP S59160669U
Authority
JP
Japan
Prior art keywords
switched
valve
pilot
switching valve
driver
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
JP5593783U
Other languages
Japanese (ja)
Other versions
JPH0324690Y2 (en
Inventor
孝則 中谷
Original Assignee
油谷重工株式会社
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 油谷重工株式会社 filed Critical 油谷重工株式会社
Priority to JP5593783U priority Critical patent/JPS59160669U/en
Publication of JPS59160669U publication Critical patent/JPS59160669U/en
Application granted granted Critical
Publication of JPH0324690Y2 publication Critical patent/JPH0324690Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Component Parts Of Construction Machinery (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

図は本考案の実施例を示す油圧回路図である。 １・・・パイロットポンプ、２・・・第１切換弁、３・
・・第２切換弁、４・・・パイロット弁、５・・・ＩＪ
　ＩＪ−フ弁、６・・・・・・タンク、７・・・運転席
、８・・・ペダル。The figure is a hydraulic circuit diagram showing an embodiment of the present invention. 1... Pilot pump, 2... First switching valve, 3...
...Second switching valve, 4...Pilot valve, 5...IJ
IJ-F valve, 6...tank, 7...driver's seat, 8...pedal.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 建設機械のアクチュエータを開胸するパイロット式制御
弁にパイロット圧を供給するパイロット弁の一次側と、
該パイロット弁に一次圧を供給する圧油源とを接続する
管路途中に、パイロット弁に一次圧を供給する操作可能
位置と、パイロット弁の一次圧をタンクにバイパスさせ
る操作不能位置とに切換自在の切換弁を設けると共に、
該切換弁を負荷の有無によって昇降する運転席に連動さ
せ、運転席が負荷によって下降したときに切換弁が操作
可能位置に切換えられ、運転席が無負荷のときに切換弁
が操作不能位置に切換・えられるように構成したことを
特徴とする建設機械の安全装置。the primary side of a pilot valve that supplies pilot pressure to a pilot control valve that opens the actuator of the construction machine;
In the middle of the pipe connecting the pressure oil source that supplies primary pressure to the pilot valve, it is switched between an operable position that supplies primary pressure to the pilot valve and an inoperable position that bypasses the pilot valve's primary pressure to the tank. In addition to providing a flexible switching valve,
The switching valve is linked to the driver's seat, which moves up and down depending on the presence or absence of a load, so that when the driver's seat is lowered by the load, the switching valve is switched to the operable position, and when the driver's seat is under no load, the switching valve is switched to the inoperable position. A safety device for construction machinery characterized by being configured so that it can be switched and switched.
JP5593783U 1983-04-13 1983-04-13 Construction machinery safety equipment Granted JPS59160669U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5593783U JPS59160669U (en) 1983-04-13 1983-04-13 Construction machinery safety equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5593783U JPS59160669U (en) 1983-04-13 1983-04-13 Construction machinery safety equipment

Publications (2)

Publication Number Publication Date
JPS59160669U true JPS59160669U (en) 1984-10-27
JPH0324690Y2 JPH0324690Y2 (en) 1991-05-29

Family

ID=30186262

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5593783U Granted JPS59160669U (en) 1983-04-13 1983-04-13 Construction machinery safety equipment

Country Status (1)

Country Link
JP (1) JPS59160669U (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100375791B1 (en) * 1998-09-09 2003-03-15 히다치 겡키 가부시키 가이샤 Road roller

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5372302A (en) * 1976-12-09 1978-06-27 Kubota Ltd Shoveling vehicle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5372302A (en) * 1976-12-09 1978-06-27 Kubota Ltd Shoveling vehicle

Also Published As

Publication number Publication date
JPH0324690Y2 (en) 1991-05-29

Similar Documents

Publication Publication Date Title
JPS5876463U (en) Hydraulic motor brake release device
JPS59160669U (en) Construction machinery safety equipment
JPS58176714U (en) Work vehicle operating device
JPS6368528U (en)
JPS58102832U (en) Hydraulic clutch actuation control device
JPS60135364U (en) Hydraulic excavator hydraulic circuit
JPS61155407U (en)
JPS59160668U (en) Construction machinery safety equipment
JPH0341211U (en)
JPS63180470U (en)
JPS58109605U (en) Work equipment hydraulic circuit
JPH0215648U (en)
JPS607228U (en) Vehicle bodywork side power take-off device
JPS6032200U (en) Marine hydraulic clutch control device
JPS58123896U (en) Load stabilizer hydraulic circuit
JPS60159799U (en) Special vehicle control device
JPH02120547U (en)
JPS616557U (en) Hydraulic circuit of hydraulic wheel shovel
JPS58156137U (en) Engine control device for hydraulically driven vehicles
JPH02145307U (en)
JPS59116465U (en) Blade work/scraper work switching device for construction vehicles
JPS6186397U (en)
JPS5850166U (en) Flow rate control device in actuator oil supply system
JPS60102178U (en) cab lifting device
JPS6087258U (en) Hydraulic path switching device for work vehicles