EP0671512B1 - Hydraulisch betätigte Verriegelungsvorrichtung für Schnellwechsler an Bau- und Arbeitsmaschinen - Google Patents
Hydraulisch betätigte Verriegelungsvorrichtung für Schnellwechsler an Bau- und Arbeitsmaschinen Download PDFInfo
- Publication number
- EP0671512B1 EP0671512B1 EP95100825A EP95100825A EP0671512B1 EP 0671512 B1 EP0671512 B1 EP 0671512B1 EP 95100825 A EP95100825 A EP 95100825A EP 95100825 A EP95100825 A EP 95100825A EP 0671512 B1 EP0671512 B1 EP 0671512B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- cylinder
- locking arrangement
- arrangement according
- locking
- 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
Images
Classifications
-
- 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
-
- 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
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2271—Actuators and supports therefor and protection therefor
Definitions
- the invention relates to a hydraulically operated locking device for quick couplers on construction and work machines with the features of the preamble of Claim 1.
- DE-C 42 10 790 describes a work machine, in particular Construction machine, known to have a recording equipment different tools is provided, and in which the change of work tools by means of a hydraulic actionable quick-change device can be brought about is, with several possibly in a control valve summarized spool are provided by means of which, if necessary, hydraulic cylinders in the area of the respective Tool and / or the quick-change device and / or the equipment receiving the work equipment can be actuated, in the hydraulic working group optionally at least one drain line leading to the tank and at least in the area of the working machine a line coupling station for optional recording not cables in use is provided.
- the the Hydraulic cylinder actuating quick-change device is connected via a line connected to a connection of the line coupling station.
- the Leakage oil line leads from the line coupling station or from the hydraulic cylinder to the line coupling station running pipe to the tank.
- the aim of the subject of the invention is a technical to find an easier and effective solution in all cases, with what intended or unintentional unlocking the locking device can be safely avoided.
- This goal is hydraulic with an inventive actuated locking device solved in that one on the piston surface side with the ring surface side Pressure chamber connecting device is provided, the is dimensioned so that with normal actuation the control valve still a problem-free locking and unlocking is possible.
- a double-acting hydraulic cylinder can be used by means of two Hydraulic lines and with a control valve required for actuation connected is.
- the hydraulic cylinder is on the cylinder and piston rod side each connected to a locking bolt, which in turn in Guides are stored.
- Pressurized oil is applied to the cylinder through the supply line the surface of the piston has a force for locking via the locking bolt of equipment.
- Unlocking the device is also done by operating the control valve, the Pressurization of the cylinder takes place via a further supply line.
- the size of the hole is to choose so that the pressure drop is still with normal operation easy locking and unlocking of the quick-change device enables.
- a double-acting hydraulic cylinder is used, which by means of two Hydraulic lines with a control valve required for actuation connected is.
- the hydraulic cylinder is here with two pistons equipped, at the piston rod ends a locking bolt is attached.
- the bolts are stored in the guides. Is a hydraulic line with the actuation of the control valve Pressurized and thus also the annular surfaces of the pistons is the Device unlocked.
- the pistons are supported on a stop from, which is firmly connected to the interior of the cylinder.
- FIG. 1 shows a schematic diagram of a quick coupler 1, by means of which for example a shovel 2 with the equipment 2 'only indicated a wheel loader, not shown, can be connected.
- quick coupler 1 contains a double-acting one Hydraulic cylinder 3, which is connected to one by means of two hydraulic lines 4, 5 control valve 6 required for actuation is connected.
- the control valve 6 When actuated of the control valve 6 such that there is a pressure in the hydraulic line 5 builds up, the piston 64 is pushed to the left in the direction of the arrow, wherein the locking bolt 8 attached to the piston rod 7 into the opening 9 of the left receiving element connected to the blade 2 10 is pushed.
- FIG. 2 shows an alternative quick-change device 20, here two pistons 22, 23 are provided within a cylinder 21.
- the ones from Control valve 24 outgoing hydraulic lines 25, 26 are connected to the hydraulic cylinder 21 connected, the hydraulic line 25 is a branch 27 includes, which serves to supply the piston 23.
- Line 26 ends between the via an annular stop 28 within the Cylinder housing 21 'spaced pistons 22,23.
- Each of the pistons 22, 23 is with a piston rod 29,30 and a locking bolt articulated thereon 31,32 connected in a corresponding opening 33,34 of with, for example, the bucket 35 of a hydraulic excavator, not shown connected receiving elements 36,37 is introduced.
- the locked position is shown here in dash-dotted lines.
- a connecting line 43 is provided, which with a Aperture 44 is equipped. Because of this connecting line 43 between the hydraulic lines 25 and 26 is seen on over time Build up the same pressure on both sides of the pistons 22, 23. Because the piston surfaces the piston 22,23 much larger than its opposite Ring surfaces are always the result of leakage from the control valve 24 a greater force in the locking direction than vice versa. So is a unwanted and uncontrolled opening of the lock of the quick-change device 20 excluded.
- Figure 3 shows a partial view of a double-acting cylinder 45, i. H. only one of the pistons 46 together with the piston rod 47, which in its end region 48 connectable with a locking bolt, not shown here is.
- the connection is in the area of the end face 49 of the cylinder 45 50 for the supply of the piston surface pressure chamber 52 and the Connection 51 is provided for the supply of the annular pressure chambers 53.
- the hydraulic medium passes through the connection 50, the bore 54 and the line 55 to the piston surface pressure chamber 52, while the Pressure medium via the connection 51, the bore 56 and the bore 57 and the line 58 reaches the pressure chambers 53 on the ring side.
- connection of the two pressure chambers 52 and 53 is now brought about in that a circumferential annular groove in the component 59 containing the connections 50, 51 60 is introduced and the connection 50 via a tap hole 61 with the Ring groove 60 and thus connected to the terminal 51.
- the measure can be taken if the pressure builds up on one or both sides in the area of the connections 50.51 a corresponding pressure adjustment in the pressure rooms 52.53 can be brought about over time. It is analogous to FIG within the cylinder housing 62 of the cylinder 45 an annular circumferential Stop 63 provided for the piston 46.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Description
- Figuren 1 bis 3 -
- hydraulisch betätigte Verriegelungsvorrichtungen für Schnellwechsler an Bau- und Arbeitsmaschinen in unterschiedlicher Ausführungsform.
Claims (8)
- Hydraulisch betätigte Verriegelungsvorrichtung für Schnellwechsler an Bau- und Arbeitsmaschinen, mit mindestens einem Zylinder (3,21,45), der mindestens einen Kolben (64,22,23,46) beinhaltet, den Zylinder (3,21,45) und/oder dem bzw. den Kolben (64,22,23,46) zugeordneten Kolbenstangen (7,11,29,30,47), die mit daran ggf. befestigten Verriegelungsbolzen (8,12,31,32) versehen sind, wobei am Zylinder (3,21,45) Hydraulikleitungen (4,5,25, 26,27,50,51) angeschlossen sind, über die der bzw. die Kolben (64,22,23,46) und/oder der Zylinder (3,21,45) über mindestens ein Steuerventil (6,24) druckbeaufschlagbar ist bzw. sind, wobei jeder Kolben (64,22,23,46) nur einseitig eine Kolbenstange (7,11,29,30,47) aufweist, derart, daß jeder Kolben (64,22,23,46) den Zylinder (3,21, 45) in einen kolbenflächenseitigen (17,38,52) und einen ringflächenseitigen Druckraum (18,41,42,53) unterteilt,
dadurch gekennzeichnet,
daß eine den kolbenflächenseitigen (17,38,52) mit dem ringflächenseitigen Druckraum (18,41,42,53) verbindende Einrichtung (19,43) vorgesehen ist, die so dimensioniert ist, daß bei normaler Betätigung über das Steuerventil (6,24) noch eine problemlose Ver- und Entriegelung möglich ist. - Verriegelungsvorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die Einrichtung (19) durch mindestens eine die Druckräume (17,18) miteinander verbindende Bohrung im Kolben (64) gebildet ist. - Verriegelungsvorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die Einrichtung (43) durch eine die Hydraulikleitungen (25,26) miteinander verbindende Leitung gebildet ist. - Verriegelungsvorrichtung nach Anspruch 3,
dadurch gekennzeichnet,
daß in die Verbindungsleitung (43) eine Blende (44) eingesetzt ist. - Verriegelungsvorrichtung nach Anspruch 3,
dadurch gekennzeichnet,
daß der Querschnitt der Verbindungsleitung (43) geringer ausgebildet ist als der Querschnitt der Hydraulikleitungen (25,26). - Verriegelungsvorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß bei der Anordnung der Anschlüsse (50,51) etwa auf gleicher Höhe des Zylinders (45) das den Zylinder (45) umgebende Bauteil (59) anschlußseitig mit einer zumindest teilweise umlaufenden Ringnut (60) versehen ist, und daß die Verbindung der Druckräume (52,53) durch eine von einem der Anschlüsse (50) ausgehende, in die Ringnut (60) sich hineinerstreckende Stichbohrung (61) hergestellt ist. - Verriegelungsvorrichtung nach einem oder mehreren der Ansprüche 1 bis 6,
dadurch gekennzeichnet,
daß bei Verwendung zweier jeweils mit einer Kolbenstange (29,30,47) versehenen Kolben (22,23,46) innerhalb eines Zylinders (21,45) ein Anschlag (28,63) für die Kolben (22,23,46) im Zylindergehäuse (21',62) vorgesehen ist. - Verriegelungsvorrichtung nach Anspruch 7,
dadurch gekennzeichnet,
daß der Anschlag (28,63) ein fest mit dem Zylindergehäuse (21',62) verbundener Ring ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4408386A DE4408386C2 (de) | 1994-03-12 | 1994-03-12 | Hydraulisch betätigte Verriegelungsvorrichtung für Schnellwechsler an Bau- und Arbeitsmaschinen |
DE4408386 | 1994-03-12 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0671512A2 EP0671512A2 (de) | 1995-09-13 |
EP0671512A3 EP0671512A3 (de) | 1996-04-24 |
EP0671512B1 true EP0671512B1 (de) | 1999-08-11 |
Family
ID=6512600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95100825A Expired - Lifetime EP0671512B1 (de) | 1994-03-12 | 1995-01-23 | Hydraulisch betätigte Verriegelungsvorrichtung für Schnellwechsler an Bau- und Arbeitsmaschinen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0671512B1 (de) |
AT (1) | ATE183270T1 (de) |
DE (2) | DE4408386C2 (de) |
ES (1) | ES2137382T3 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2308839A (en) * | 1995-12-30 | 1997-07-09 | Samsung Heavy Ind | Device for Connecting Iplement to Machine |
WO2002088476A1 (en) * | 2001-05-02 | 2002-11-07 | Bruce Archibald Short | Connection apparatus |
DE20215843U1 (de) | 2002-10-15 | 2003-01-16 | Rammax Maschinenbau GmbH, 72555 Metzingen | Bodenverdichtungsvorrichtung |
EP2038485B1 (de) | 2006-06-27 | 2012-05-30 | Oscar Meier AG | Kupplungsvorrichtung sowie erdbewegungsmaschine mit einer solchen kupplungsvorrichtung |
DE102009051669A1 (de) * | 2009-10-07 | 2011-04-28 | Wolfgang Triller | Schwenkanbauvorrichtung |
DE202012009838U1 (de) * | 2012-07-24 | 2013-10-25 | Kinshofer Gmbh | Schnellkuppler |
CN105927609B (zh) * | 2016-06-08 | 2017-11-28 | 江苏永钢集团有限公司 | 一种轧机插销缸 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3023740A (en) * | 1960-05-25 | 1962-03-06 | Fairchild Stratos Corp | Delayed pneumatic actuator |
DE2511819C3 (de) * | 1975-03-18 | 1978-10-19 | Liebherr-Hydraulikbagger Gmbh, 7951 Kirchdorf | Hydraulikbagger |
US4337687A (en) * | 1980-05-23 | 1982-07-06 | Prince Manufacturing Corporation | Poppet trip device for hydraulic cylinders |
DD241029A1 (de) * | 1985-09-18 | 1986-11-26 | Werkzeugmasch Forschzent | Stuetzlager fuer eine beidseits zu fuehrende bohrstange |
GB8629750D0 (en) * | 1986-12-12 | 1987-01-21 | British Aerospace | Electro-hydraulic actuator assembly |
US4767255A (en) * | 1987-09-28 | 1988-08-30 | J.I. Case Company | Backhoe boom cylinder bleed circuit |
DE4102370A1 (de) * | 1990-02-12 | 1991-08-14 | Walter Fritzel | Loeffelbagger |
DE4010224C2 (de) * | 1990-03-30 | 1994-05-19 | Porsche Ag | Schnellwechselvorrichtung |
DE4210790A1 (de) * | 1991-04-04 | 1992-10-08 | Orenstein & Koppel Ag | Arbeitsmaschine, insbesondere baumaschine |
-
1994
- 1994-03-12 DE DE4408386A patent/DE4408386C2/de not_active Expired - Fee Related
-
1995
- 1995-01-23 ES ES95100825T patent/ES2137382T3/es not_active Expired - Lifetime
- 1995-01-23 AT AT95100825T patent/ATE183270T1/de not_active IP Right Cessation
- 1995-01-23 DE DE59506556T patent/DE59506556D1/de not_active Expired - Fee Related
- 1995-01-23 EP EP95100825A patent/EP0671512B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2137382T3 (es) | 1999-12-16 |
ATE183270T1 (de) | 1999-08-15 |
DE59506556D1 (de) | 1999-09-16 |
EP0671512A2 (de) | 1995-09-13 |
DE4408386A1 (de) | 1995-09-21 |
DE4408386C2 (de) | 1996-07-04 |
EP0671512A3 (de) | 1996-04-24 |
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