EP0702756B1 - Systeme de securite monte sur des unites hydrauliques piston-cylindre - Google Patents

Systeme de securite monte sur des unites hydrauliques piston-cylindre Download PDF

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Publication number
EP0702756B1
EP0702756B1 EP95908166A EP95908166A EP0702756B1 EP 0702756 B1 EP0702756 B1 EP 0702756B1 EP 95908166 A EP95908166 A EP 95908166A EP 95908166 A EP95908166 A EP 95908166A EP 0702756 B1 EP0702756 B1 EP 0702756B1
Authority
EP
European Patent Office
Prior art keywords
piston
hydraulic piston
cylinder
sensor
pct
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
Application number
EP95908166A
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German (de)
English (en)
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EP0702756A1 (fr
Inventor
Alois Wimmer
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0702756A1 publication Critical patent/EP0702756A1/fr
Application granted granted Critical
Publication of EP0702756B1 publication Critical patent/EP0702756B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E02F9/24—Safety devices, e.g. for preventing overload
    • 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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3654—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with energy coupler, e.g. coupler for hydraulic or electric lines, to provide energy to drive(s) mounted on the tool
    • 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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems

Definitions

  • the invention relates to a safety device on hydraulic Piston-cylinder units, in particular for monitoring Locking cylinders, e.g. of work tools attached to an excavator boom are attached, with a sensor on the hydraulic piston-cylinder unit Monitoring of the piston position is provided, which is electrical with a Monitoring circuit to trigger an alarm device when incorrect Piston position is coupled.
  • a monitoring device of the type mentioned above is e.g. from the US-PS 5049027, in which a microswitch is provided, which only is closed with the locking cylinder retracted and then one Control lamp lights up.
  • This well-known training has the Disadvantage that the locking cylinder can be operated freely, without that Control device must be considered.
  • the invention has for its object a safety device to create the type mentioned, in which a simple operation of the Locking cylinder is turned off, which means that these cylinders are conscious must be unlocked in order to release work tools.
  • this object is achieved in that with the sensor with the monitoring circuit electrically coupled and electrically operated check valve is coupled to control the hydraulic piston-cylinder unit. It must that is, before the locking cylinder is actuated, the electrically actuated shut-off valve be operated via the monitoring circuit, since this check valve is used to the locking cylinder after its adjustment in its new adjustment position hold, this check valve just for adjusting the locking cylinder is opened. It is also achieved that the sensor also Control circuit for the check valve is checked.
  • a button can advantageously be used to actuate the shut-off valve Bridging the monitoring circuit may be provided. Only after pressing this button is then activated accordingly Locking cylinder an adjustment of the same possible. After all, in that Monitoring circuit a relay controlled by the sensor to trigger the Alarm device can be provided, whereby the switching on of Alarm devices can be made quickly via the monitoring circuit can.
  • this safety device serves that on the part of the operator for locking and unlocking the Locking cylinder two hands are needed, that is, with one hand the shut-off valve must be opened and then the other hand Locking cylinder is operated. It is excluded that a change the excavator bucket is made while the excavator boom is being operated, since there is an increased risk of accidents for people working on the construction site results, since the work tool may be picked up, however the locking cylinder is not retracted into the associated eyelet, but only by e.g. Clamp is held.
  • Fig. 1 shows the hydraulic circuit diagram for an attachment on a Excavator boom, with a locking cylinder with safety device is provided.
  • Fig. 2 shows the electrical circuit diagram for a Lock cylinder monitoring device.
  • Fig. 3 gives a front view the locking cylinder again.
  • Fig. 4 is a side view of the Locking cylinder seen in the direction of arrow A of FIG. 3.
  • This hydraulic piston-cylinder unit 1 is a check valve 2 in the desired position fixable.
  • a sensor 3 is used to monitor this position provided which determines whether the working piston of the hydraulic Piston-cylinder unit 1 is in the desired position.
  • On such a working tool is indicated at 5, for example, two of which are shown in FIG. 1 Variants are reproduced, namely either a Grapple slewing motor 5 'or the swivel cylinder 5' 'for embankment spoons.
  • a control valve for the hydraulic piston-cylinder unit 1 denotes with which the hydraulic circuits can be switched so that either the hydraulic piston-cylinder unit 1 or the work tool 5 can be controlled.
  • 7 is a so-called Swivel block, i.e. the flexible connection between the rigid Hydraulic lines on the excavator boom and the hydraulic lines on swiveling coupling part for the working tools.
  • the sensor 3 is connected to a monitoring circuit, which for Triggering an alarm device is provided, which from a control lamp 10 and a siren 11.
  • the connection between the sensor 3 and the Monitoring circuit 9 takes place via lines 12, 13, line 13 at the same time forms the control line for the check valve 2.
  • the check valve 2 is also connected to the monitoring circuit via line 14 (see Fig. 2).
  • a relay 15 is provided, which one Switch 16 actuated. This switch serves to activate the alarm devices 10, 11 switch on or switch off when the sensor is in the correct position.
  • At 17 is one Denoted potentiometer, which is connected in parallel with the switch 16 and for Feeding the siren 11 is used.
  • a button is designated, which for Bridging the line 14 to the check valve is used, with a fuse 19 in the Line is interposed. This button 18 is used by closing the Circuit to act on the check valve 2 so that it switches to continuity and thus actuation of the hydraulic piston-cylinder unit 1 via the Control valve 4 allows with the correct position of the control valve 6.
  • the control valve In the position of the valves shown in Fig. 1, the control valve is in Rest position, the control valve 6 is connected to the hydraulic Piston-cylinder unit 1 set and the check valve 2 locked. In this locked position, the sensor 3 is closed, so that the relay 15 with current is applied and the switch 16 in the position shown in dashed lines in Fig. 2 has spent.
  • the alarm devices 10, 11 are thus inoperative and the hydraulic piston-cylinder unit or the one formed by it Locking cylinder in the working position.
  • the button 18 must first Check valve 2 are switched to the through position, which does this is accomplished that the check valve 2 is designed as a solenoid valve, with Current application against the force of a spring 2 'in the valve Through position is switched. Then can the control valve 4 Piston of the hydraulic piston-cylinder unit 1 in the unlocked position be moved.
  • the relay 15 de-energized, so that during the entire changing process Alarm device 10, 11 is in action, and only after the whole Locking cylinder again by closing sensor 3 and thus Acting on the relay 15 and flipping the switch 16 in the broken line in FIG Position is switched off.
  • the alarm device 10, 11 is switched off, the excavator operator realizes that the locking cylinder has engaged properly is.
  • the control valve 6 If the working tool 5 is to be actuated with the help of the control valve 4, then the control valve 6 from the position shown in Fig. 1 in the Alternative position transferred, which then the two connectors 8 under Stand pressure and thus depending on the position of the valve 4, the working tool actuate.
  • the hydraulic piston-cylinder unit 1 is then from the hydraulic pressure uncoupled, which means that in the system of the hydraulic piston-cylinder unit 1 located hydraulic fluid is locked and thus an adjustment of the Locking cylinder prevented while working with the working tool.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Fluid-Pressure Circuits (AREA)

Claims (3)

  1. Dispositif de sécurité pour unités piston-cylindre hydrauliques, spécialement pour la surveillance de cylindres de verrouillage, par exemple pour les outils de travail installés sur la flèche d'une pelle, ou pour la surveillance de la position du piston sur l'unité piston-cylindre hydraulique (1) un capteur (3) accouplé par l'électricité à un circuit de surveillance (9) est prévu pour déclencher un avertisseur d'alarme en cas d'une fausse position du piston, caractérisé en ce que pour l'excitation de l'unité piston-cylindre hydraulique (1) une valve d'arrêt (2) à actionnement électrique est accouplée électriquement à un circuit de surveillance (9) et qui est accouplée au capteur (3) pour déclencher l'avertisseur d'alarme.
  2. Dispositif de sécurité selon revendication 1, caractérisé en ce que pour l'actionnement de la valve d'arrêt (2) il est prévue une touche (18) pour le pontage du circuit de surveillance (9).
  3. Dispositif de sécurité selon revendication 1 ou 2, caractérisé en ce que dans le circuit de surveillance (9) il est prévu un relais (15) excité par le capteur (3) pour déclencher l'avertisseur d'alarme (10, 11).
EP95908166A 1994-03-02 1995-02-21 Systeme de securite monte sur des unites hydrauliques piston-cylindre Expired - Lifetime EP0702756B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT44894 1994-03-02
AT448/94 1994-03-02
AT0044894A AT401785B (de) 1994-03-02 1994-03-02 Sicherheitseinrichtung an hydraulischen kolben-zylinder-einheiten
PCT/AT1995/000037 WO1995023925A1 (fr) 1994-03-02 1995-02-21 Systeme de securite monte sur des unites hydrauliques piston-cylindre

Publications (2)

Publication Number Publication Date
EP0702756A1 EP0702756A1 (fr) 1996-03-27
EP0702756B1 true EP0702756B1 (fr) 2000-05-17

Family

ID=3490886

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95908166A Expired - Lifetime EP0702756B1 (fr) 1994-03-02 1995-02-21 Systeme de securite monte sur des unites hydrauliques piston-cylindre

Country Status (7)

Country Link
US (1) US5727442A (fr)
EP (1) EP0702756B1 (fr)
JP (1) JPH09500438A (fr)
AT (2) AT401785B (fr)
CA (1) CA2161972A1 (fr)
DE (1) DE59508343D1 (fr)
WO (1) WO1995023925A1 (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2316668B (en) * 1996-08-24 2000-05-17 Robert Wilson Excavator arm having an elevation limiting system
AT411075B (de) * 1997-04-14 2003-09-25 Baumaschinentechnik Ges M B H Schnellwechselvorrichtung für bagger
FR2776316B1 (fr) * 1998-03-18 2000-06-16 Mailleux Sa Systeme de verrouillage hydraulique d'un outil de chargeur
US6431049B1 (en) 2000-08-24 2002-08-13 Jem Technical Marketing Co., Inc. Manifold for maintaining a latch actuator under pressure and accommodating leaks
DE10119340A1 (de) * 2001-04-20 2002-10-31 Stabilus Gmbh Betätigungssystem für eine Klappe o. dergleichen
DE102004051213B3 (de) * 2004-10-20 2006-06-01 Lukas Hydraulik Gmbh Steuereinrichtung
US20070129273A1 (en) * 2005-12-07 2007-06-07 Clark Philip G In situ fluoride ion-generating compositions and uses thereof
GB2464988B8 (en) * 2008-11-03 2013-02-20 Miller Int Ltd Coupler with coupling status sensors
SE1100099A1 (sv) 2010-11-15 2012-05-16 Indexator Ab Förfarande och anordning vid en arbetsarm
CN102352878B (zh) * 2011-08-09 2016-02-24 三一汽车制造有限公司 一种支腿锁止系统及移动式工程机械
US9804039B2 (en) 2012-04-27 2017-10-31 Cameron International Corporation System and method for position monitoring using ultrasonic sensor
US9187974B2 (en) * 2012-04-27 2015-11-17 Cameron International Corporation System and method for position monitoring using ultrasonic sensor
US9163471B2 (en) 2012-04-27 2015-10-20 Cameron International Corporation Position monitoring system and method
GB2509303A (en) 2012-11-08 2014-07-02 Miller Int Ltd Coupler
DE102013005213A1 (de) * 2013-03-27 2014-10-02 Claas Industrietechnik Gmbh Fahrzeug mit Anbaugerätekupplung und Anbaugerät dafür
DE202014004430U1 (de) * 2013-05-31 2014-09-02 Kinshofer Gmbh Schnellkuppler
GB2535194B (en) * 2015-02-12 2018-07-11 Caterpillar Inc Engagement indicator system
US9862137B2 (en) 2015-04-20 2018-01-09 Milwaukee Electric Tool Corporation PEX expanding tool
WO2016201196A1 (fr) 2015-06-10 2016-12-15 Milwaukee Electric Tool Corporation Outil d'expansion pex
JP7211687B2 (ja) 2018-10-17 2023-01-24 キャタピラー エス エー アール エル 降下防止弁装置、ブレード装置および作業機械

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SE327677B (fr) * 1968-12-17 1970-08-24 Nydqvist & Holm Ab
US3608431A (en) * 1969-07-14 1971-09-28 Lummus Industries Control system for the ram of vertically disposed fluid pressure cylinders
US3654833A (en) * 1970-06-29 1972-04-11 Eaton Yale & Towne Hydraulic control circuit
DE2232832A1 (de) * 1971-07-20 1973-02-01 Fiat Spa Schutzvorrichtung fuer hydraulische stromkreise
US3782249A (en) * 1972-11-16 1974-01-01 Allis Chalmers Hydraulic control system with locking valve to prevent accidental or unauthorized lowering of a tractor implement
US4423664A (en) * 1981-04-10 1984-01-03 Buchl Andrew F Depth control apparatus
US5049027A (en) * 1990-02-21 1991-09-17 Komatsu Dresser Company Hydro-electric tool lock
US5096347A (en) * 1990-04-20 1992-03-17 Mori Seiko Co., Ltd. Spring clamp with clamped condition holding device
DE4224132C2 (de) * 1992-07-22 2002-11-14 Stabilus Gmbh Türfeststellsystem

Also Published As

Publication number Publication date
ATE193101T1 (de) 2000-06-15
US5727442A (en) 1998-03-17
EP0702756A1 (fr) 1996-03-27
ATA44894A (de) 1996-04-15
JPH09500438A (ja) 1997-01-14
DE59508343D1 (de) 2000-06-21
AT401785B (de) 1996-11-25
CA2161972A1 (fr) 1995-09-08
WO1995023925A1 (fr) 1995-09-08

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