JPH0473058U - - Google Patents

Info

Publication number
JPH0473058U
JPH0473058U JP11454990U JP11454990U JPH0473058U JP H0473058 U JPH0473058 U JP H0473058U JP 11454990 U JP11454990 U JP 11454990U JP 11454990 U JP11454990 U JP 11454990U JP H0473058 U JPH0473058 U JP H0473058U
Authority
JP
Japan
Prior art keywords
oil chamber
valve
vehicle
pressure
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
JP11454990U
Other languages
Japanese (ja)
Other versions
JP2523909Y2 (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 JP1990114549U priority Critical patent/JP2523909Y2/en
Publication of JPH0473058U publication Critical patent/JPH0473058U/ja
Application granted granted Critical
Publication of JP2523909Y2 publication Critical patent/JP2523909Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Operation Control Of Excavators (AREA)
  • Vibration Prevention Devices (AREA)

Description

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

図面は本考案の一実施例を示すもので、第１図
はブームシリンダの油圧回路図、第２図はホイー
ルローダの側面図である。 １……車両本体、２……作業装置、１１……ブ
ーム、１２……ブームシリンダ（昇降シリンダ）
、１３……バケツト（作業部）、１７……制御弁
、１９……ロツド側油室（負荷側油室）、２１…
…ヘツド側油室（負荷保持側油室）、２７……開
閉弁、２８……アキユムレータ、３０……過負荷
防止用リリーフ弁、３２……圧力検出器、３３…
…高さ検出器。 The drawings show one embodiment of the present invention, and FIG. 1 is a hydraulic circuit diagram of a boom cylinder, and FIG. 2 is a side view of a wheel loader. 1...Vehicle main body, 2...Work device, 11...Boom, 12...Boom cylinder (lifting cylinder)
, 13... Bucket (working part), 17... Control valve, 19... Rod side oil chamber (load side oil chamber), 21...
...Head side oil chamber (load holding side oil chamber), 27...Opening/closing valve, 28...Accumulator, 30...Overload prevention relief valve, 32...Pressure detector, 33...
...Height detector.

Claims (1)

【実用新案登録請求の範囲】 (1) 車両本体に、作業部が昇降シリンダを介し
て昇降可能に備えられた車両において、 昇降シリンダの負荷側油室に油タンクが接続さ
れ、 昇降シリンダの負荷保持側油室にアキユムレー
タが開閉弁を介して接続され、 負荷保持側油室内の作動油圧力が、下限設定圧
力以下又は上限設定圧力以上になつたことを検出
して、開閉弁を閉鎖体勢とする圧力検出器が備え
られた ことを特徴とする車両のダイナミツクダンパー。 (2) 車両本体に、作業部が昇降シリンダを介し
て昇降可能に備えられた車両において、 昇降シリンダの負荷側油室に油タンクが開閉弁
を介して接続され、 昇降シリンダの負荷保持側油室にアキユムレー
タが開閉弁を介して接続され、 ａ 負荷保持側油室内の作動油圧力が下限設定
圧力以下又は上限設定圧力以上になつたことを検
出して、両開閉弁を閉鎖体勢とする圧力検出器と
、 ｂ 作業部の高さが設定高さ以下になつたこと
を検出して、両開閉弁を閉鎖体勢とする高さ検出
器 が備えられた ことを特徴とする車両のダイナミツクダンパー。 (3) 昇降シリンダの負荷保持側油室とアキユム
レータ間の油路に、アキユムレータの過負荷防止
用リリーフ弁が接続されたことを特徴とする請求
項１又は２記載の車両のダイナミツクダンパー。 (4) 開閉弁を常時開放体勢とするスイツチが備
えられたことを特徴とする請求項１乃至３の何れ
かに記載の車両のダイナミツクダンパー。[Scope of Claim for Utility Model Registration] (1) In a vehicle in which a working part is provided in the vehicle body so that it can be raised and lowered via a lift cylinder, an oil tank is connected to the load-side oil chamber of the lift cylinder, and the load side of the lift cylinder is An accumulator is connected to the oil chamber on the holding side via an on-off valve, and when it detects that the hydraulic oil pressure in the oil chamber on the load holding side is below the lower limit set pressure or above the upper limit set pressure, the on-off valve is set to the closing position. A dynamic damper for a vehicle, characterized in that it is equipped with a pressure detector. (2) In a vehicle in which the working part is installed in the vehicle body so that it can be raised and lowered via a lifting cylinder, an oil tank is connected to the load side oil chamber of the lifting cylinder via an on-off valve, and the oil tank is connected to the load side oil chamber of the lifting cylinder. An accumulator is connected to the chamber via an on-off valve, and a pressure is set to close both on-off valves when it is detected that the hydraulic oil pressure in the oil chamber on the load holding side has become below the lower limit set pressure or above the upper limit set pressure. A dynamic damper for a vehicle, comprising: a detector; and (b) a height detector that detects that the height of the working part has fallen below a set height and sets both open/close valves to a closed position. . (3) The dynamic damper for a vehicle according to claim 1 or 2, characterized in that a relief valve for preventing overload of the accumulator is connected to the oil passage between the load holding side oil chamber of the lifting cylinder and the accumulator. (4) The dynamic damper for a vehicle according to any one of claims 1 to 3, further comprising a switch that keeps the on-off valve in an open position at all times.
JP1990114549U 1990-10-30 1990-10-30 Vehicle dynamic damper Expired - Fee Related JP2523909Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990114549U JP2523909Y2 (en) 1990-10-30 1990-10-30 Vehicle dynamic damper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990114549U JP2523909Y2 (en) 1990-10-30 1990-10-30 Vehicle dynamic damper

Publications (2)

Publication Number Publication Date
JPH0473058U true JPH0473058U (en) 1992-06-26
JP2523909Y2 JP2523909Y2 (en) 1997-01-29

Family

ID=31862245

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990114549U Expired - Fee Related JP2523909Y2 (en) 1990-10-30 1990-10-30 Vehicle dynamic damper

Country Status (1)

Country Link
JP (1) JP2523909Y2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008088044A1 (en) * 2007-01-18 2008-07-24 Hitachi Construction Machinery Co., Ltd. Vibration suppression device for hydraulic working machine and hydraulic working machine
JP4707829B2 (en) * 1999-12-16 2011-06-22 キャタピラー インコーポレイテッド Hydraulic ride comfort control system
US8204655B2 (en) 2006-10-19 2012-06-19 Hitachi Construction Machinery Co., Ltd. Construction machine
WO2012086774A1 (en) * 2010-12-24 2012-06-28 株式会社小松製作所 Driving damper control device for wheel loader
JP2012225455A (en) * 2011-04-21 2012-11-15 Hitachi Constr Mach Co Ltd Hydraulic circuit of working machine
JP2017131179A (en) * 2016-01-29 2017-08-03 Ｋｙｂ株式会社 Boom displacement device and boom sprayer
JP2017184695A (en) * 2016-04-08 2017-10-12 Ｋｙｂ株式会社 Boom damping device, and boom sprayer
US10774852B2 (en) 2016-12-28 2020-09-15 Kubota Corporation Hydraulic system for working machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58131087A (en) * 1982-01-29 1983-08-04 Toshiba Corp Printer
JPS62137298A (en) * 1985-12-09 1987-06-20 菊池　直美 Vertical injection jet airplane
JPS62140735A (en) * 1985-12-13 1987-06-24 Otani Reiji Automatic wafer mount/takeout device interlocked with carrier loader with revolving table and partitioning rack

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58131087A (en) * 1982-01-29 1983-08-04 Toshiba Corp Printer
JPS62137298A (en) * 1985-12-09 1987-06-20 菊池　直美 Vertical injection jet airplane
JPS62140735A (en) * 1985-12-13 1987-06-24 Otani Reiji Automatic wafer mount/takeout device interlocked with carrier loader with revolving table and partitioning rack

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4707829B2 (en) * 1999-12-16 2011-06-22 キャタピラー インコーポレイテッド Hydraulic ride comfort control system
US8204655B2 (en) 2006-10-19 2012-06-19 Hitachi Construction Machinery Co., Ltd. Construction machine
WO2008088044A1 (en) * 2007-01-18 2008-07-24 Hitachi Construction Machinery Co., Ltd. Vibration suppression device for hydraulic working machine and hydraulic working machine
DE112008000200B4 (en) 2007-01-18 2021-08-26 Hitachi Construction Machinery Co., Ltd. Vibration suppressing device for hydraulic working machine and hydraulic working machine
WO2012086774A1 (en) * 2010-12-24 2012-06-28 株式会社小松製作所 Driving damper control device for wheel loader
JP5054855B2 (en) * 2010-12-24 2012-10-24 株式会社小松製作所 Wheel damper control device for wheel loader
US8538640B2 (en) 2010-12-24 2013-09-17 Komatsu Ltd. Travel damper control device for wheel loader
JP2012225455A (en) * 2011-04-21 2012-11-15 Hitachi Constr Mach Co Ltd Hydraulic circuit of working machine
JP2017131179A (en) * 2016-01-29 2017-08-03 Ｋｙｂ株式会社 Boom displacement device and boom sprayer
JP2017184695A (en) * 2016-04-08 2017-10-12 Ｋｙｂ株式会社 Boom damping device, and boom sprayer
US10774852B2 (en) 2016-12-28 2020-09-15 Kubota Corporation Hydraulic system for working machine
US11306746B2 (en) 2016-12-28 2022-04-19 Kubota Corporation Hydraulic system for working machine

Also Published As

Publication number Publication date
JP2523909Y2 (en) 1997-01-29

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Legal Events

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LAPS Cancellation because of no payment of annual fees