EP0416180A1 - Gerät zur Begrenzung der Schwenkbewegung einer Arbeitsmaschine des Schwenkbewegungstyps, wie ein Kran oder ein hydraulischer Schaufelbagger - Google Patents

Gerät zur Begrenzung der Schwenkbewegung einer Arbeitsmaschine des Schwenkbewegungstyps, wie ein Kran oder ein hydraulischer Schaufelbagger Download PDF

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Publication number
EP0416180A1
EP0416180A1 EP89309084A EP89309084A EP0416180A1 EP 0416180 A1 EP0416180 A1 EP 0416180A1 EP 89309084 A EP89309084 A EP 89309084A EP 89309084 A EP89309084 A EP 89309084A EP 0416180 A1 EP0416180 A1 EP 0416180A1
Authority
EP
European Patent Office
Prior art keywords
swing
limit
angle
sensor
limiting
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.)
Withdrawn
Application number
EP89309084A
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English (en)
French (fr)
Inventor
Hideki Kinugawa
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 EP89309084A priority Critical patent/EP0416180A1/de
Publication of EP0416180A1 publication Critical patent/EP0416180A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C15/00—Safety gear
    • B66C15/04—Safety gear for preventing collisions, e.g. between cranes or trolleys operating on the same track
    • B66C15/045—Safety gear for preventing collisions, e.g. between cranes or trolleys operating on the same track electrical
    • 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
    • E02F9/24—Safety devices, e.g. for preventing overload

Definitions

  • the present invention relates to a swing limiting apparatus for limiting the swing of a swing type work machine such as a crane, a hydraulic shovel or the like, to improve, for example, its safe working.
  • a swing limiting apparatus comprising a limit angle setting means for setting as an electrical value swing limit angles in both left and right directions of a swing body with respect to a swing reference point, a swing angle sensor for detecting as an electrical value swing angles in both left and right directions with respect to said swing reference point of said swing body, and a controller for outputting a swing stop command to a swing driving system when the swing angle of the swing body exceeds the set angular limit on the basis of the detected signal of the swing angle sensor and the angular limit set by the limit angle setting means.
  • the swing limit angle is set as an electrical value, the troublesome and dangerous setting of the limit switch as in the prior arrangement become unnecessary.
  • the swing stop function is automatically activated if the swing angle of the swing body exceeds the set angular limit, and therefore, a collision preventive action is positively performed.
  • reference numeral 1 designates a lower travel body of a crawler crane such as a swing truck.
  • O Designates the swing center of a swing body (not shown), P a swing reference point ⁇ , a swing limit angle to the left with respect to the swing reference point P, and ⁇ a swing limit angle to the right thereof.
  • FIG. 1 A block diagram of the present apparatus for limiting the left and right swing angles of the swing body to the aforesaid limit angles ⁇ and ⁇ is shown in FIG. 1.
  • Reference numeral 2 designates a swing angle sensor in which during operation, the left and right swing angles with respect to the swing reference point P of the swing body are detected as an electrical value by the sensor 1.
  • the detected value is taken into a controller C.
  • a potentiometer can be used as the swing angle sensor 2, in which the resistance to the swing reference point P (swing angle is O) is used as the electrical reference value, and the resistance varies as the swing body swings to left or right.
  • an A/D converter is provided between the sensor 2 and the controller 3.
  • Reference numeral 3 designates a leftward swing limit angle setting switch, and 4 a rightward swing limit angle setting switch.
  • a memory 5 such as a RAM
  • the controller C comprises a decision unit 6 which compares the detected value (actual swing angle) of the sensor 2 during the swinging, and the set value ( ⁇ or ⁇ ) of the angular limit to decide whether the detected value is smaller than the set value, that is, the swing angle is within the angular limit, and swing stop control units 7 and 8 for controlling energization and deenergization of solenoids 9 and 10 of a left and right swing stop electromagnetic valve (not shown) according to the result of the decision by the decision unit 6.
  • the swing stop control units 7 and 8 energize the solenoids 9 and 10 of the swing stop electromagnetic valve when the decision unit 6 decides that the detected value is smaller than the set value, and cuts off the energization of the solenoids 9 and 10 when the detected valve exceeds the set value.
  • the swing stop electromagnetic valve causes a remote control valve operated by a lever in a swing hydraulic circuit and a main control valve (the remote control valve and the main control valve not being shown) to be energized when the solenoids 9 and 10 are energized, and solenoids 9 and 10 are switched to the cutoff position when deenergized.
  • the swing hydraulic circuit is operated in a normal manner and the swing operation is carried out.
  • the swing hydraulic circuit is cut off and the swing operation of the swing body is automatically stopped.
  • the swing stop control units 7 and 8 and the swing stop electromagnetic valve function separately with respect to both left and right swinging directions, even if one swing operation is suppressed, the other swing operation can be performed within the angular limit.
  • an electromagnetic proportional reducing valve may be used in which a primary pressure changes in proportional to an energizing current.
  • the secondary pressure of the electromagnetic proportional reducing valve reduces, and the speed of swing gradually reduces accordingly. Therefore, the swing operation can be gradually stopped.
  • an alarm may be issued in a manner similar to the prior art at the same time as the swing stop function is operated.
  • the swing limit angle is set as an electrical value by the swing limit angle setting means, the setting of the limit can be much simpler and safer than the prior art in which the angular limit is set by the adjustment of position of the limit switch. Furthermore, when the swing angle exceeds the angular limit, the swing is automatically stopped, positively preventing collision of the swing body with the obstacle as compared with the conventional device in which an alarm is merely provided, thus enhancing the safety of operation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Jib Cranes (AREA)
  • Operation Control Of Excavators (AREA)
EP89309084A 1989-09-07 1989-09-07 Gerät zur Begrenzung der Schwenkbewegung einer Arbeitsmaschine des Schwenkbewegungstyps, wie ein Kran oder ein hydraulischer Schaufelbagger Withdrawn EP0416180A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP89309084A EP0416180A1 (de) 1989-09-07 1989-09-07 Gerät zur Begrenzung der Schwenkbewegung einer Arbeitsmaschine des Schwenkbewegungstyps, wie ein Kran oder ein hydraulischer Schaufelbagger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89309084A EP0416180A1 (de) 1989-09-07 1989-09-07 Gerät zur Begrenzung der Schwenkbewegung einer Arbeitsmaschine des Schwenkbewegungstyps, wie ein Kran oder ein hydraulischer Schaufelbagger

Publications (1)

Publication Number Publication Date
EP0416180A1 true EP0416180A1 (de) 1991-03-13

Family

ID=8202781

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89309084A Withdrawn EP0416180A1 (de) 1989-09-07 1989-09-07 Gerät zur Begrenzung der Schwenkbewegung einer Arbeitsmaschine des Schwenkbewegungstyps, wie ein Kran oder ein hydraulischer Schaufelbagger

Country Status (1)

Country Link
EP (1) EP0416180A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180119383A1 (en) * 2016-11-02 2018-05-03 Clark Equipment Company System and method for defining a zone of operation for a lift arm
WO2020204239A1 (ko) * 2019-04-05 2020-10-08 볼보 컨스트럭션 이큅먼트 에이비 건설기계

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4084247A (en) * 1976-10-26 1978-04-11 Fmc Corporation Fluid loading arm alarm system
FR2458504A1 (fr) * 1979-06-11 1981-01-02 Simon Francois Procede et dispositif pour la detection d'interferences d'engins de levage
GB2068890A (en) * 1980-01-07 1981-08-19 Komatsu Mfg Co Ltd Semi-automatic hydraulic excavator
FR2495593A1 (fr) * 1980-12-05 1982-06-11 Setri Installation de levage pour locaux confines, comprenant un equipement de grue a fleche cantilever
FR2517659A1 (fr) * 1981-12-08 1983-06-10 Materiel Indl Equipement Dispositif selecteur-delimitateur de zones de travail pour le controle d'aires de giration d'un ou plusieurs engins tels que grues, plaques tournantes, appareils de manutention ou autres et engins ainsi equipes
FR2550520A1 (fr) * 1983-08-12 1985-02-15 Causse Antoine Dispositif d'interdiction automatique du deplacement dans une zone predeterminee d'un bras de levage orientable
GB2204014A (en) * 1987-04-29 1988-11-02 Scott Jcb Limited Slew control system
US4833615A (en) * 1986-10-15 1989-05-23 A.G.A. Credit System for the protection of an aerial device having a pivotable boom

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4084247A (en) * 1976-10-26 1978-04-11 Fmc Corporation Fluid loading arm alarm system
FR2458504A1 (fr) * 1979-06-11 1981-01-02 Simon Francois Procede et dispositif pour la detection d'interferences d'engins de levage
GB2068890A (en) * 1980-01-07 1981-08-19 Komatsu Mfg Co Ltd Semi-automatic hydraulic excavator
FR2495593A1 (fr) * 1980-12-05 1982-06-11 Setri Installation de levage pour locaux confines, comprenant un equipement de grue a fleche cantilever
FR2517659A1 (fr) * 1981-12-08 1983-06-10 Materiel Indl Equipement Dispositif selecteur-delimitateur de zones de travail pour le controle d'aires de giration d'un ou plusieurs engins tels que grues, plaques tournantes, appareils de manutention ou autres et engins ainsi equipes
FR2550520A1 (fr) * 1983-08-12 1985-02-15 Causse Antoine Dispositif d'interdiction automatique du deplacement dans une zone predeterminee d'un bras de levage orientable
US4833615A (en) * 1986-10-15 1989-05-23 A.G.A. Credit System for the protection of an aerial device having a pivotable boom
GB2204014A (en) * 1987-04-29 1988-11-02 Scott Jcb Limited Slew control system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180119383A1 (en) * 2016-11-02 2018-05-03 Clark Equipment Company System and method for defining a zone of operation for a lift arm
WO2018085553A1 (en) * 2016-11-02 2018-05-11 Clark Equipment Company System and method for defining a zone of operation for a lift arm
CN109863273A (zh) * 2016-11-02 2019-06-07 克拉克设备公司 用于定义升降臂的操作区域的系统和方法
KR20190082202A (ko) * 2016-11-02 2019-07-09 클라크 이큅먼트 컴파니 리프트 암의 작동 영역을 정의하는 시스템 및 방법
US10494788B2 (en) 2016-11-02 2019-12-03 Clark Equipment Company System and method for defining a zone of operation for a lift arm
CN109863273B (zh) * 2016-11-02 2022-05-13 克拉克设备公司 用于定义升降臂的操作区域的系统和方法
WO2020204239A1 (ko) * 2019-04-05 2020-10-08 볼보 컨스트럭션 이큅먼트 에이비 건설기계

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