JP4695340B2 - ブームシリンダのカバー装置 - Google Patents

ブームシリンダのカバー装置 Download PDF

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Publication number
JP4695340B2
JP4695340B2 JP2004067673A JP2004067673A JP4695340B2 JP 4695340 B2 JP4695340 B2 JP 4695340B2 JP 2004067673 A JP2004067673 A JP 2004067673A JP 2004067673 A JP2004067673 A JP 2004067673A JP 4695340 B2 JP4695340 B2 JP 4695340B2
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JP
Japan
Prior art keywords
cover member
boom cylinder
boom
cylinder
cover
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.)
Expired - Fee Related
Application number
JP2004067673A
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English (en)
Japanese (ja)
Other versions
JP2005256354A (ja
Inventor
芳明 石井
裕直 石川
新吾 岸本
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co 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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP2004067673A priority Critical patent/JP4695340B2/ja
Priority to KR1020050015177A priority patent/KR101061697B1/ko
Priority to CN2005100088901A priority patent/CN1667208B/zh
Publication of JP2005256354A publication Critical patent/JP2005256354A/ja
Application granted granted Critical
Publication of JP4695340B2 publication Critical patent/JP4695340B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3223—Modifications of amplifiers to reduce non-linear distortion using feed-forward
    • H03F1/3229—Modifications of amplifiers to reduce non-linear distortion using feed-forward using a loop for error extraction and another loop for error subtraction
    • H03F1/3235—Modifications of amplifiers to reduce non-linear distortion using feed-forward using a loop for error extraction and another loop for error subtraction using a pilot signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3221—Predistortion by overamplifying in a feedforward stage the distortion signal to have a combined main signal and "negative" distortion to form the predistorted signal for a further stage. so that after amplification in the further stage only the amplified main signal remains

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Actuator (AREA)
  • Component Parts Of Construction Machinery (AREA)
JP2004067673A 2004-03-10 2004-03-10 ブームシリンダのカバー装置 Expired - Fee Related JP4695340B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2004067673A JP4695340B2 (ja) 2004-03-10 2004-03-10 ブームシリンダのカバー装置
KR1020050015177A KR101061697B1 (ko) 2004-03-10 2005-02-24 유압 실린더의 커버 장치
CN2005100088901A CN1667208B (zh) 2004-03-10 2005-02-24 油压缸的罩装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004067673A JP4695340B2 (ja) 2004-03-10 2004-03-10 ブームシリンダのカバー装置

Publications (2)

Publication Number Publication Date
JP2005256354A JP2005256354A (ja) 2005-09-22
JP4695340B2 true JP4695340B2 (ja) 2011-06-08

Family

ID=35038475

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004067673A Expired - Fee Related JP4695340B2 (ja) 2004-03-10 2004-03-10 ブームシリンダのカバー装置

Country Status (3)

Country Link
JP (1) JP4695340B2 (ko)
KR (1) KR101061697B1 (ko)
CN (1) CN1667208B (ko)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4542019B2 (ja) * 2005-10-14 2010-09-08 日立建機株式会社 シリンダ装置
JP4584823B2 (ja) * 2005-12-20 2010-11-24 日立建機株式会社 シリンダ装置
JP5526106B2 (ja) * 2011-11-08 2014-06-18 日立建機株式会社 建設機械のシリンダカバー取り付け構造
KR102064113B1 (ko) * 2019-05-02 2020-01-08 지춘남 프레임과 탄성 고정되는 방화문용 실린더 보호커버
CN115354711B (zh) * 2022-08-29 2023-07-07 安徽铜冠（庐江）矿业有限公司 一种用于井下铲运机转向油缸的防护装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09296474A (ja) * 1996-05-07 1997-11-18 Kubota Corp 建設作業機におけるブーム揺動シリンダの保護装置
JP2001073404A (ja) * 1999-09-06 2001-03-21 Hitachi Constr Mach Co Ltd シリンダカバー装置
JP2001073405A (ja) * 1999-09-06 2001-03-21 Hitachi Constr Mach Co Ltd シリンダカバー装置
JP2002021812A (ja) * 2000-07-07 2002-01-23 Hitachi Constr Mach Co Ltd 油圧シリンダーの断面略コ字形の三面保護構造
JP2002317465A (ja) * 2001-04-19 2002-10-31 Komatsu Ltd 建設機械

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000212994A (ja) 1999-01-27 2000-08-02 Shin Caterpillar Mitsubishi Ltd 建設機械における油圧シリンダの保護装置
JP3718434B2 (ja) * 2001-01-23 2005-11-24 株式会社クボタ シリンダの保護装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09296474A (ja) * 1996-05-07 1997-11-18 Kubota Corp 建設作業機におけるブーム揺動シリンダの保護装置
JP2001073404A (ja) * 1999-09-06 2001-03-21 Hitachi Constr Mach Co Ltd シリンダカバー装置
JP2001073405A (ja) * 1999-09-06 2001-03-21 Hitachi Constr Mach Co Ltd シリンダカバー装置
JP2002021812A (ja) * 2000-07-07 2002-01-23 Hitachi Constr Mach Co Ltd 油圧シリンダーの断面略コ字形の三面保護構造
JP2002317465A (ja) * 2001-04-19 2002-10-31 Komatsu Ltd 建設機械

Also Published As

Publication number Publication date
KR101061697B1 (ko) 2011-09-01
CN1667208A (zh) 2005-09-14
CN1667208B (zh) 2012-03-21
KR20060043161A (ko) 2006-05-15
JP2005256354A (ja) 2005-09-22

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