KR200389672Y1 - 휠로더의 붐상하반동방지장치 - Google Patents
휠로더의 붐상하반동방지장치 Download PDFInfo
- Publication number
- KR200389672Y1 KR200389672Y1 KR20-1999-0012338U KR19990012338U KR200389672Y1 KR 200389672 Y1 KR200389672 Y1 KR 200389672Y1 KR 19990012338 U KR19990012338 U KR 19990012338U KR 200389672 Y1 KR200389672 Y1 KR 200389672Y1
- Authority
- KR
- South Korea
- Prior art keywords
- boom
- valve
- side chamber
- bucket
- head side
- 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 - Lifetime
Links
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 16
- 230000002265 prevention Effects 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 18
- 239000006096 absorbing agent Substances 0.000 description 10
- 230000035939 shock Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000011094 buffer selection Methods 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
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
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
-
- 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
- E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
-
- 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
- E02F9/2278—Hydraulic circuits
- E02F9/2282—Systems using center bypass type changeover valves
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
- E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
- E02F3/431—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like
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)
Abstract
Description
Claims (2)
- 붐실린더(18)의 헤드측 체임버(18a)와 붐 완충용 어큐물레이터(21)를 연결하는 제1분기라인(19c)상에 차단밸브(23)가 연결설치되어 상기 차단밸브(23)의 절환작동에 의해 상기 제1분기라인(19c)를 통하여 상기 붐실린더 헤드측 체임버(18a)와 어큐물레이터(21)의 압유흐름을 허용하거나 차단하도록 된 휠로더의 붐상하반동방지장치에 있어서,상기 차단밸브(23)는 리모트콘트롤밸브(13)에서 발생되는 버켓덤프신호압(b)의 유무에 따라 상기 제1분기라인(19c)을 개방 또는 차단하게 된 것을 특징으로 하는 휠로더의 붐상하반동방지장치.
- 붐실린더(18)의 헤드측 체임버(18a)와 붐 완충용 어큐물레이터(21)를 상호 연결하는 제1분기라인(19c)상에 이 제1분기라인(19c)을 개폐하는 개폐밸브가 구비되어 상기 개폐밸브의 절환작동에 의해 상기 제1분기라인(19c)를 통하여 상기 붐실린더 헤드측 체임버(18a)와 어큐물레이터(21) 사이의 압유흐름을 허용하거나 차단하도록 된 휠로더의 붐상하반동방지장치에 있어서,상기 개폐밸브는 솔레노이드 선택밸브(22)로 구성되고, 상기 선택밸브(22)는 압력스위치(22)를 매개로 전원에 연결되며, 상기 압력스위치(22)는 리모트콘트롤밸브에서 발생되는 버켓덤프신호압(b)에 의해 상기 선택밸브(22)를 소자시켜 상기 제1분기라인(19c)을 차단하게 된 것을 특징으로 하는 휠로더의 붐상하반동방지장치.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20-1999-0012338U KR200389672Y1 (ko) | 1999-06-30 | 1999-06-30 | 휠로더의 붐상하반동방지장치 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20-1999-0012338U KR200389672Y1 (ko) | 1999-06-30 | 1999-06-30 | 휠로더의 붐상하반동방지장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20010001832U KR20010001832U (ko) | 2001-01-26 |
KR200389672Y1 true KR200389672Y1 (ko) | 2005-07-14 |
Family
ID=43690939
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR20-1999-0012338U Expired - Lifetime KR200389672Y1 (ko) | 1999-06-30 | 1999-06-30 | 휠로더의 붐상하반동방지장치 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR200389672Y1 (ko) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100714182B1 (ko) | 2006-02-16 | 2007-05-04 | 주식회사 자동기 | 제설기의 유압장치 |
EP4219838A4 (en) * | 2021-01-29 | 2024-04-03 | Shanghai Sany Heavy Machinery Limited | DAMPING SYSTEM FOR MOVABLE ARM OF A LOADING MACHINE AND OPERATING MACHINE |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100953809B1 (ko) * | 2002-12-27 | 2010-04-21 | 두산인프라코어 주식회사 | 휠로더의 붐완충장치 |
-
1999
- 1999-06-30 KR KR20-1999-0012338U patent/KR200389672Y1/ko not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100714182B1 (ko) | 2006-02-16 | 2007-05-04 | 주식회사 자동기 | 제설기의 유압장치 |
EP4219838A4 (en) * | 2021-01-29 | 2024-04-03 | Shanghai Sany Heavy Machinery Limited | DAMPING SYSTEM FOR MOVABLE ARM OF A LOADING MACHINE AND OPERATING MACHINE |
Also Published As
Publication number | Publication date |
---|---|
KR20010001832U (ko) | 2001-01-26 |
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Date | Code | Title | Description |
---|---|---|---|
UA0108 | Application for utility model registration |
Comment text: Application for Utility Model Registration Patent event code: UA01011R08D Patent event date: 19990630 |
|
N231 | Notification of change of applicant | ||
UN2301 | Change of applicant |
Comment text: Notification of Change of Applicant Patent event code: UN23011R01D Patent event date: 20001115 |
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UG1501 | Laying open of application | ||
A201 | Request for examination | ||
UA0201 | Request for examination |
Patent event date: 20020621 Patent event code: UA02012R01D Comment text: Request for Examination of Application Patent event date: 19990630 Patent event code: UA02011R01I Comment text: Application for Utility Model Registration |
|
E902 | Notification of reason for refusal | ||
UE0902 | Notice of grounds for rejection |
Comment text: Notification of reason for refusal Patent event code: UE09021S01D Patent event date: 20040917 |
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E701 | Decision to grant or registration of patent right | ||
UE0701 | Decision of registration |
Patent event date: 20050408 Comment text: Decision to Grant Registration Patent event code: UE07011S01D |
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Patent event date: 20050705 Patent event code: UR07011E01D Comment text: Registration of Establishment |
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UC1801 | Expiration of term |
Termination category: Expiration of duration Termination date: 20141231 |