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JPS6466321A - Vibration insulator for vehicular construction machine - Google Patents

Vibration insulator for vehicular construction machine

Info

Publication number
JPS6466321A
JPS6466321A JP22438087A JP22438087A JPS6466321A JP S6466321 A JPS6466321 A JP S6466321A JP 22438087 A JP22438087 A JP 22438087A JP 22438087 A JP22438087 A JP 22438087A JP S6466321 A JPS6466321 A JP S6466321A
Authority
JP
Japan
Prior art keywords
oil
accumulator
valve
mode
cylinder
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.)
Pending
Application number
JP22438087A
Other languages
Japanese (ja)
Inventor
Yoichi Kunieda
Satoru Torii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP22438087A priority Critical patent/JPS6466321A/en
Publication of JPS6466321A publication Critical patent/JPS6466321A/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
    • E02F9/2207—Arrangements for controlling the attitude of actuators, e.g. speed, floating function for reducing or compensating oscillations
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

PURPOSE:To improve riding comfort of a construction machine by a method in which an oil-pressure cylinder for operation is connected to an oil pressure source circuit and a tank in a switching manner and an accumulator for suppressing vibration and a mode switching valve are connected to the cylinder. CONSTITUTION:When the vehicle is in vibrated state by the undulation or road surface during the traveling period, a mode-switching valve 15 is switched to a connecting position, and oil in the head side oil chamber 8a of a boom cylinder 8 flows through a slow-return check valve 16 into an accumulator 17 or comes out of the accumulator 17 to suppress vibration. During excavating operation, a mode-switching valve 22 is switched to an excavation mode, and the valve 15 and a selection valve 21 are restored to the interrupting position. When excavation is started, oil does not flow into a tank 10 from the way of the pipe 14b on the head side and the extension or contraction of the cylinder 8 are properly controlled by a direction control valve 13. Furthermore, high- pressure oil directed into the oil chamber 8a on the head side does not flow into the accumulator 17 side, thereby preventing breakage of the accumulator 17.
JP22438087A 1987-09-08 1987-09-08 Vibration insulator for vehicular construction machine Pending JPS6466321A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22438087A JPS6466321A (en) 1987-09-08 1987-09-08 Vibration insulator for vehicular construction machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22438087A JPS6466321A (en) 1987-09-08 1987-09-08 Vibration insulator for vehicular construction machine

Publications (1)

Publication Number Publication Date
JPS6466321A true JPS6466321A (en) 1989-03-13

Family

ID=16812845

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22438087A Pending JPS6466321A (en) 1987-09-08 1987-09-08 Vibration insulator for vehicular construction machine

Country Status (1)

Country Link
JP (1) JPS6466321A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7089734B2 (en) 2000-05-25 2006-08-15 J.C. Bamford Excavators Limited Hydraulic system for wheeled loader

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7089734B2 (en) 2000-05-25 2006-08-15 J.C. Bamford Excavators Limited Hydraulic system for wheeled loader

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