KR20150063766A - 지게차 - Google Patents
지게차 Download PDFInfo
- Publication number
- KR20150063766A KR20150063766A KR1020130148530A KR20130148530A KR20150063766A KR 20150063766 A KR20150063766 A KR 20150063766A KR 1020130148530 A KR1020130148530 A KR 1020130148530A KR 20130148530 A KR20130148530 A KR 20130148530A KR 20150063766 A KR20150063766 A KR 20150063766A
- Authority
- KR
- South Korea
- Prior art keywords
- speed
- forklift
- valve
- running speed
- steering
- 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.)
- Ceased
Links
- 230000005540 biological transmission Effects 0.000 claims description 16
- 239000003921 oil Substances 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/341—Systems characterised by their valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/08—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of steering valve used
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
- B62D6/02—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to vehicle speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/07568—Steering arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
본 발명에 따른 지게차는 주행속도가 설정된 주행속도에 도달되거나 높을 때에 조향 유닛에 제공되는 작동유의 압력이 감소되도록 제어된다. 이로써 소망하는 방향전환을 구현하기 위해서는 저속 주행일 때보다 상대적으로 스티어링 휠의 회전조작이 더 많이 수행해야 된다. 즉, 스티어링 휠의 조작에 대한 지게차 방향전환의 민감도를 낮추어 직진 주행성능을 개선할 수 있다.
Description
도 2는 본 발명의 일 실시예에 따른 지게차를 설명하기 위한 도면이다.
12: 주행우선 밸브 13: 메인컨트롤 밸브
14: 리프트 액추에이터 15: 안전밸브
16: 제어밸브 17: 틸티 액추에이터
20: 조향 유닛 21: 스티어링 휠
30: 조향 액추에이터 31: 후륜 타이어
40: 마스터 액추에이터 41: 페달
50: 브레이크 유닛 51: 전륜 타이어
100: 제어기 200: 제어밸브
Claims (5)
상기 동력에 의해 작동되어 압력이 형성된 작동유가 토출되는 펌프(10);
제어부에서 주행모드가 선택되면 상기 작동유가 주행모터에 우선적으로 제공되게 제어되는 주행우선 밸브(12);
상기 주행우선 밸브(12)로부터 작동유를 제공받고 스티어링 휠(21)이 회전조작 되어 방향전환을 위한 작동유가 배출되는 조향 유닛(20); 및
상기 방향전환을 위한 작동유에 의해 후륜 타이어(31)의 주행방향을 전환하도록 작동되는 조향 액추에이터(30);를 포함하여 구성되는 지게차에 있어서,
설정 주행속도가 저장되고, 현재 주행속도가 상기 설정 주행속도에 도달되거나 높을 때에 제어지령이 출력되는 제어기(100); 및
상기 주행우선 밸브(12)로부터 상기 조향 유닛(20)에 작동유가 제공되는 유압라인에 설치되고, 상기 제어지령이 출력될 때 밸브의 개도 량을 증가시켜 작동유의 압력이 감소되도록 제어되는 제어밸브(200);
를 포함하는 지게차.
상기 현재 주행속도가 엔진제어장치로부터 엔진회전수(rpm) 값을 제공받아 연산되는 것을 특징으로 하는 지게차.
상기 현재 주행속도가 트랜스미션(11)의 드라이빙 속도의 값을 제공받아 연산되는 것을 특징으로 하는 지게차.
상기 현재 주행속도가 엔진제어장치로부터 엔진회전수(rpm) 값 또는 트랜스미션(11)의 드라이빙 속도의 값을 제공받아 연산되는 것을 특징으로 하는 지게차.
상기 제어밸브(200)는 현재 주행속도에 비례하여 밸브의 개도량이 제어되는 것을 특징으로 하는 지게차.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020130148530A KR20150063766A (ko) | 2013-12-02 | 2013-12-02 | 지게차 |
CN201480065783.XA CN105793141A (zh) | 2013-12-02 | 2014-10-16 | 叉车 |
EP14868310.5A EP3078574A4 (en) | 2013-12-02 | 2014-10-16 | Forklift |
US15/100,664 US20160297657A1 (en) | 2013-12-02 | 2014-10-16 | Forklift |
PCT/KR2014/009708 WO2015083937A1 (ko) | 2013-12-02 | 2014-10-16 | 지게차 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020130148530A KR20150063766A (ko) | 2013-12-02 | 2013-12-02 | 지게차 |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20150063766A true KR20150063766A (ko) | 2015-06-10 |
Family
ID=53273657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020130148530A Ceased KR20150063766A (ko) | 2013-12-02 | 2013-12-02 | 지게차 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20160297657A1 (ko) |
EP (1) | EP3078574A4 (ko) |
KR (1) | KR20150063766A (ko) |
CN (1) | CN105793141A (ko) |
WO (1) | WO2015083937A1 (ko) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2991312C (en) | 2015-08-14 | 2023-09-19 | Crown Equipment Corporation | Steering and traction applications for determining a steering control attribute and a traction control attribute |
KR102489196B1 (ko) | 2015-08-14 | 2023-01-17 | 크라운 이큅먼트 코포레이션 | 조향 모델에 기반한 모델 기반 진단 |
AU2017393175B2 (en) | 2017-01-13 | 2023-08-31 | Crown Equipment Corporation | Traction speed recovery based on steer wheel dynamic |
AU2017393176B2 (en) | 2017-01-13 | 2023-05-11 | Crown Equipment Corporation | High speed straight ahead tiller desensitization |
CN109656127B (zh) * | 2018-12-31 | 2022-03-01 | 河南嘉晨智能控制股份有限公司 | 一种适用于电动叉车控制器的驱动冗余设计方法 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW482129U (en) * | 1997-04-23 | 2002-04-01 | Toyoda Automatic Loom Works | A rock controller for industrial vehicle body |
KR100225963B1 (ko) * | 1997-07-28 | 1999-10-15 | 추호석 | 엔진지게차의 조향시스템 제어방법 및 그 장치 |
JP2000025624A (ja) * | 1998-07-14 | 2000-01-25 | Showa Corp | 油圧式パワーステアリング装置 |
KR100503612B1 (ko) * | 1998-08-28 | 2006-08-30 | 두산인프라코어 주식회사 | 중장비용 변속기 |
KR100880393B1 (ko) | 2001-12-28 | 2009-01-23 | 두산인프라코어 주식회사 | 앵글센서를 이용한 전동지게차의 회전 제어 방법 |
KR100918202B1 (ko) * | 2002-12-18 | 2009-09-21 | 두산인프라코어 주식회사 | 지게차의 회전주행 제어 장치 및 방법 |
JP2005075093A (ja) * | 2003-08-29 | 2005-03-24 | Koyo Seiko Co Ltd | パワーステアリングユニット |
JP5051866B2 (ja) * | 2005-04-28 | 2012-10-17 | 株式会社ジェイテクト | 油圧式パワーステアリング装置 |
US7364004B2 (en) * | 2005-08-22 | 2008-04-29 | Trw Automotive U.S. Llc | Apparatus for use in turning steerable vehicle wheels |
KR20070042780A (ko) * | 2005-10-19 | 2007-04-24 | 두산인프라코어 주식회사 | 지게차의 조향시스템 |
DE102005059237A1 (de) * | 2005-12-12 | 2007-06-14 | Linde Ag | Hydraulische Lenkeinrichtung |
KR100655329B1 (ko) * | 2005-12-13 | 2006-12-08 | 두산인프라코어 주식회사 | 엔진식 지게차의 주행속도 제한장치 |
US7487856B2 (en) * | 2006-08-30 | 2009-02-10 | Fluid Routing Solutions, Inc. | Electrically actuated, hydraulic power steering system |
GB2451244B (en) * | 2007-07-21 | 2011-09-28 | Bamford Excavators Ltd | Working machine |
KR20090068919A (ko) * | 2007-12-24 | 2009-06-29 | 두산인프라코어 주식회사 | 지게차의 전복방지장치 |
US8403103B1 (en) * | 2011-09-23 | 2013-03-26 | Trw Automotive U.S. Llc | Apparatus for use in turning steerable vehicle wheels |
US8439151B2 (en) * | 2011-09-23 | 2013-05-14 | Trw Automotive U.S. Llc | Apparatus for use in turning steerable vehicle wheels |
-
2013
- 2013-12-02 KR KR1020130148530A patent/KR20150063766A/ko not_active Ceased
-
2014
- 2014-10-16 US US15/100,664 patent/US20160297657A1/en not_active Abandoned
- 2014-10-16 EP EP14868310.5A patent/EP3078574A4/en not_active Withdrawn
- 2014-10-16 CN CN201480065783.XA patent/CN105793141A/zh active Pending
- 2014-10-16 WO PCT/KR2014/009708 patent/WO2015083937A1/ko active Application Filing
Also Published As
Publication number | Publication date |
---|---|
CN105793141A (zh) | 2016-07-20 |
US20160297657A1 (en) | 2016-10-13 |
EP3078574A1 (en) | 2016-10-12 |
WO2015083937A1 (ko) | 2015-06-11 |
EP3078574A4 (en) | 2017-08-30 |
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Patent event code: PA02012R01D Patent event date: 20180323 Comment text: Request for Examination of Application Patent event code: PA02011R01I Patent event date: 20131202 Comment text: Patent Application |
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Comment text: Notification of reason for refusal Patent event date: 20190508 Patent event code: PE09021S01D |
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PE0601 | Decision on rejection of patent |
Patent event date: 20190923 Comment text: Decision to Refuse Application Patent event code: PE06012S01D Patent event date: 20190508 Comment text: Notification of reason for refusal Patent event code: PE06011S01I |